An Evaluation 

of Affordable 

Housing 

Using the 

National

Green Building 

Standard

U.S. Department of Housing and Urban Development | Office of Policy Development and Research
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An Evaluation 

of Affordable 

Housing 

Using the 

National

Green Building 

Standard

Prepared for

U.S. Department of Housing 

and Urban Development

Washington, D.C.

Prepared by

NAHB Research Center, Inc.

Upper Marlboro, MD 

October 2012
AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Acknowledgments

U.S. Department of Housing and Urban Development (HUD), Office of Healthy Homes and Lead 

Hazard Control, Policy and Standards Division:

Peter J. Ashley, Director 

HUD, Office of Policy Development and Research:

Edwin Stromberg, Government Technical Representative

Principal Investigators:

Lance Barta, National Association of Home Builders (NAHB) Research Center

Marie Del Bianco, NAHB Research Center

Michael Grothe, NAHB Research Center

John Peavey, NAHB Research Center

Other Contributing Agencies and Housing Authorities

The authors thank the following public agencies and housing authorities for providing the 

architectural designs and specifications that made this report possible.

HUD

The Housing Opportunities for People Everywhere (HOPE) VI Program

The HOME Program

The Federal Emergency Management Agency

The Alternative Housing Pilot Program

The City of Bayou La Batre in Alabama

The Louisiana Recovery Authority in Louisiana

The Oakland Housing Authority in California

The Richmond Redevelopment Housing Authority in Virginia

The Seattle Housing Authority in Washington

The Akron Metropolitan Housing Authority in Ohio

The Cuyahoga Metropolitan Housing Authority in Ohio

The Montgomery County Department of Housing and Community Affairs in Maryland

Disclaimer

Neither the NAHB Research Center nor any person acting on its behalf makes any warranty, 

express or implied, regarding the use of any information, apparatus, method, or process disclosed 

in this publication or that such use may not infringe privately owned rights, nor assumes any 

liabilities regarding the use of, or for damages resulting from the use of, any information, 

apparatus, method, or process disclosed in this publication, or is responsible for statements made 

or opinions expressed by individual authors.

The contents of this report are the views of the contractor and do not necessarily reflect the views 

or policies of the U.S. Department of Housing and Urban Development or the U.S. government.
Abstract

Using the National Green Building Standard (NGBS) as the benchmark, this report provides 

a retrospective evaluation of eight affordable housing designs that were built in compliance 

with various green building programs. The areas of improvement include water conservation, 

land design and use, energy efficiency, and green education. The total minimum cost of the 

improvements is from $950 to $3,600. In addition, the report identifies how green remodeling 

can enhance older houses (residential structures built on or before December 31, 1979) for a 

minimum cost of $3,000. The NGBS is a nationally recognized, complete green building standard 

that complies with Office of Management and Budget Circular No. A-119, which establishes a 

preference for federal agencies to use voluntary consensus standards.

ABSTRACT

Foreword

The U.S. Department of Housing and Urban Development, through its housing development 

programs and the American Recovery and Reinvestment Act of 2009 (ARRA) initiatives, now 

actively supports the construction of affordable housing using green construction rating systems. 

This represents billions of dollars in annual federal investment that now supports green building. 

The expected benefits of these investments are to enhance the quality, longevity, and energy 

efficiency of HUD’s existing and newly-developed housing stock, as well as to assist in the 

creation and preservation of jobs in communities across the country.

As part of the Department’s commitment to create a sustainable future, the Office of Policy 

Development and Research has initiated a series of research studies to support the Department’s 

efforts to go green and to make HUD’s housing stock more energy-efficient. The study reported 

here, An Evaluation of Affordable Housing Using the National Green Building Standard, was conducted 

in partnership with the Office of Healthy Homes and Lead Hazard Control. The purpose was 

to estimate the incremental cost of adding green features to existing HUD-assisted properties to 

make them fully compliant with green building guidelines. Using this, the financial feasibility of 

bringing these units into full compliance with a nationally recognized, complete green building 

standard was assessed. In this study, the National Green Building Standard (NGBS) was used as 

the national standard, although others could have been used.

The study demonstrated that recent affordable housing designs under HUD programs are close 

to meeting a green standard, and with modest design changes and modest cost increases—up to 

$3500 per unit—and could achieve compliance with a green standard. This study provided strong 

evidence that new or rehabilitated HUD-assisted housing can achieve green ratings at a relatively 

modest incremental cost, and that such green enhancements would likely be cost-effective 

because they focus on features that would yield demonstrable cost savings.

We at HUD recognize that much more research is needed to realize the full potential of the 

greening of affordable housing, and this study represents a useful step in achieving that goal.

FOREWORD

Raphael W. Bostic, Ph.D. 

Assistant Secretary for Policy 

Development and Research 

Jon L. Gant 

Director, Office of Health Homes 

and Lead Hazard Control

vii

Table of Contents

Executive Summary......................................................................................................................................................xiii

Summary of Evaluation Results: The Affordable House Designs..................................................................xvi

Summary of Evaluation Results: The Pre-1980 Multifamily Apartment Building.................................... xvii

Summary of Key Findings..................................................................................................................................xviii

Potential Policy Implications .................................................................................................................................xix

Introduction........................................................................................................................................................................ 1

Chapter 1. Evaluation Protocol...................................................................................................................................... 3

1.1. National Green Building Standard .............................................................................................................. 3

1.2 Defining the Cost and Benefit Analysis ...................................................................................................... 5

1.3 The Greening Process..................................................................................................................................... 7

Chapter 2. Overview of the Baseline Green Ratings............................................................................................... 9

2.1 Baseline Green Ratings for Affordable House Designs ........................................................................... 9

2.2 Baseline Green Remodeling Ratings for Multifamily Apartment Units............................................. 15

Chapter 3. Case Studies: Making Green Improvements....................................................................................... 17

3.1 Climate Zone #2............................................................................................................................................. 18

3.1.1 Louisiana Disaster Relief Housing...............................................................................................18

3.1.2 Alabama Disaster Relief Housing............................................................................................... 28

3.2 Climate Zone #3............................................................................................................................................. 39

3.2.1 Oakland, California: Tassafaronga Development.....................................................................39

3.3 Climate Zone #4............................................................................................................................................. 51

3.3.1 Richmond, Virginia: Blackwell Development............................................................................51

3.3.2 Seattle, Washington: High Point Development .........................................................................62

3.4 Climate Zone #5............................................................................................................................................. 72

3.4.1 Akron, Ohio: Edgewood Homes Development........................................................................ 73

3.4.2 Cuyahoga Falls, Ohio: Valley View Homes Development...................................................... 94

TABLE OF CONTENTS
viii AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

3.5 Green Remodeling Using the National Green Building Standard..................................................... 106

3.5.1 Montgomery County, Maryland—The Multifamily Example ..............................................107

Chapter 4. Key Findings and Green Research Topics..........................................................................................129

4.1 Characterizing the Affordable Housing Designs.................................................................................. 129

4.2 Characterizing the Pre-1980 Multifamily Apartment Units................................................................ 130

4.3 Quantifying Benefits and Affordability.................................................................................................. 131

4.4 Quantifying Energy Savings..................................................................................................................... 131

4.5 Quantifying Water Savings ....................................................................................................................... 135

4.6 Limitations of This Study........................................................................................................................... 136

4.7 Recommended Green Research Topics ................................................................................................... 136

APPENDIX A COST DETAILS................................................................................................................................. 137

APPENDIX B GREEN SCORING AND COST..................................................................................................... 211

APPENDIX C ENERGY MODELS ...........................................................................................................................429 

Endnotes.......................................................................................................................................................................... 731

List of Tables

Table A-1. Description of Affordable House Designs and Pre-1980 Multifamily Apartment.................. xiii

Table A-2. Baseline NGBS Ratings for the Eight Affordable House Designs ................................................xv

Table A-3. Baseline Conditions of Pre-1980 Multifamily Units—Energy, Water, and IEQ.........................xvi

Table A-4. Simple Payback Periods for Energy and Water Improvements ................................................xviii

Table 1-1. Rating Levels for the National Green Building Standard.................................................................. 3

Table 1-2. Threshold Point Ratings for Green Buildings...................................................................................... 3

Table 1-3. Remodeling Threshold Ratings for Energy and Water Consumption Reductions ...................... 4

Table 2-1. Baseline NGBS Ratings for the Eight Affordable House Designs.................................................... 9

Table 2-2. Total Accrued Green Points Versus Performance Path.................................................................... 11

Table 2-3. Baseline Existing Conditions per Apartment Unit—Energy, Water, and IEQ............................. 15

Table 3-1. Baseline Rating for KC910 Model......................................................................................................... 20

Table 3-2. Bronze Rating for KC910 Model........................................................................................................... 21

Table 3-3. Initial Cost to the Builder for the Bronze KC910 Model .................................................................. 22

Table 3-4. Silver Rating for KC910 Model ............................................................................................................. 23

Table 3-5. Initial Cost to the Builder for the Silver KC910 Model..................................................................... 23

Table 3-6. Gold Rating for KC910 Model............................................................................................................... 24

Table 3-7. Initial Cost to the Builder for the Gold KC910 Model....................................................................... 25

Table 3-8. Emerald Rating for KC910 Model........................................................................................................ 26
ix

Table 3-9. Initial Cost to the Builder for the Emerald KC910 Model................................................................ 26

Table 3-10. Overall Cost and Performance Data for KC910 Model................................................................... 28

Table 3-11. Baseline Rating for AMT2356A Model.............................................................................................. 30

Table 3-12. Bronze Rating for AMT2356A Model................................................................................................ 31

Table 3-13. Initial Cost to the Builder for the Bronze AMT2356A Model ....................................................... 31

Table 3-14. Silver Rating for AMT2356A Model .................................................................................................. 33

Table 3-15. Initial Cost to the Builder for the Silver AMT2356A Model.......................................................... 33

Table 3-16. Gold Rating for AMT2356A Model.................................................................................................... 34

Table 3-17. Initial Cost to the Builder for the Gold AMT2356A Model............................................................ 35

Table 3-18. Emerald Rating for AMT2356A Model ............................................................................................. 36

Table 3-19. Initial Cost to the Builder for the Emerald AMT2356A Model..................................................... 36

Table 3-20. Overall Cost and Performance Data for AMT2356A Model......................................................... 38

Table 3-21. Baseline Rating for Two-Story Townhouse...................................................................................... 41

Table 3-22. Bronze Rating for Two-Story Townhouse........................................................................................ 42

Table 3-23. Initial Cost to the Builder for the Bronze Two-Story Townhouse................................................ 43

Table 3-24. Silver Rating for Two-Story Townhouse........................................................................................... 44

Table 3-25. Initial Cost to the Builder for the Silver Two-Story Townhouse .................................................. 44

Table 3-26. Gold Rating for Two-Story Townhouse ............................................................................................ 46

Table 3-27. Cost to the Builder for the Gold Two-Story Townhouse................................................................ 46

Table 3-28. Emerald Rating for Two-Story Townhouse...................................................................................... 48

Table 3-29. Initial Cost to the Builder for the Emerald Two-Story Townhouse ............................................. 49

Table 3-30. Overall Cost and Performance Data for Two-Story Townhouse ................................................. 50

Table 3-31. Baseline Rating for Single-Family Rowhouse.................................................................................. 53

Table 3-32. Bronze Rating for Single-Family Rowhouse.................................................................................... 54

Table 3-33. Initial Cost to the Builder for the Bronze Single-Family Rowhouse ........................................... 54

Table 3-34. Silver Rating for Single-Family Rowhouse ...................................................................................... 55

Table 3-35. Initial Cost to the Builder for the Silver Single-Family Rowhouse.............................................. 56

Table 3-36. Gold Rating for Single-Family Rowhouse........................................................................................ 57

Table 3-37. Initial Cost to the Builder for the Gold Single-Family Rowhouse................................................ 58

Table 3-38. Emerald Rating for Single-Family Rowhouse ................................................................................. 59

Table 3-39. Initial Cost to the Builder for the Emerald Single-Family Rowhouse......................................... 60

Table 3-40. Overall Cost and Performance Data for Single-Family Rowhouse............................................. 61

Table 3-41. Baseline Rating for Two-Story Stacked Multiunit .......................................................................... 64

Table 3-42. Bronze Rating for Two-Story Stacked Multiunit ............................................................................ 65

Table 3-43. Initial Cost to the Builder for the Bronze Two-Story Stacked Multiunit.................................... 65

LIST OF TABLES
x AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-44. Silver Rating for Two-Story Stacked Multiunit............................................................................... 66

Table 3-45. Initial Cost to the Builder for the Silver Two-Story Stacked Multiunit....................................... 67

Table 3-46. Gold Rating for Two-Story Stacked Multiunit ................................................................................ 68

Table 3-47. Initial Cost to the Builder for the Gold Two-Story Stacked Multiunit ........................................ 69

Table 3-48. Emerald Rating for Two-Story Stacked Multiunit.......................................................................... 70

Table 3-49. Initial Cost to the Builder for the Emerald Two-Story Stacked Multiunit.................................. 71

Table 3-50. Overall Cost and Performance Data for Two-Story Stacked Multiunit...................................... 72

Table 3-51. Baseline Rating for Townhouse Type A ............................................................................................74

Table 3-52. Bronze Rating for Townhouse Type A.............................................................................................. 75

Table 3-53. Initial Cost to the Builder for the Bronze Townhouse Type A..................................................... 76

Table 3-54. Silver Rating for Townhouse Type A................................................................................................ 77

Table 3-55. Initial Cost to the Builder for the Silver Townhouse Type A........................................................ 77

Table 3-56. Gold Rating for Townhouse Type A ................................................................................................. 79

Table 3-57. Initial Cost to the Builder for the Gold Townhouse Type A ......................................................... 79

Table 3-58. Emerald Rating for Townhouse Type A........................................................................................... 81

Table 3-59. Initial Cost to the Builder for the Emerald Townhouse Type A................................................... 81

Table 3-60. Overall Cost and Performance Data for Townhouse Type A....................................................... 83

Table 3-61. Baseline Rating for Single-Family Type D ....................................................................................... 85

Table 3-62. Bronze Rating for Single-Family Type D.......................................................................................... 86

Table 3-63. Initial Cost to the Builder for the Bronze Single-Family Type D................................................. 87

Table 3-64. Silver Rating for Single-Family Type D............................................................................................ 88

Table 3-65. Initial Cost to the Builder for the Silver Single-Family Type D.................................................... 88

Table 3-66. Gold Rating for Single-Family Type D ............................................................................................. 90

Table 3-67. Initial Cost to the Builder for the Gold Single-Family Type D ..................................................... 90

Table 3-68. Emerald Rating for Single-Family Type D....................................................................................... 92

Table 3-69. Initial Cost to the Builder for the Emerald Single-Family Type D............................................... 92

Table 3-70. Overall Cost and Performance Data for Single-Family Type D ................................................... 94

Table 3-71. Baseline Rating for One-Bedroom Apartment................................................................................ 96

Table 3-72. Bronze Rating for One-Bedroom Apartment.................................................................................. 98

Table 3-73. Initial Cost to the Builder for the Bronze One-Bedroom Apartment.......................................... 98

Table 3-74. Silver Rating for One-Bedroom Apartment................................................................................... 100

Table 3-75. Initial Cost to the Builder for the Silver One-Bedroom Apartment .......................................... 100

Table 3-76. Gold Rating for One-Bedroom Apartment .................................................................................... 102

Table 3-77. Initial Cost to the Builder for the Gold One-Bedroom Apartment............................................ 102

Table 3-78. Emerald Rating for One-Bedroom Apartment.............................................................................. 104
xi

Table 3-79. Initial Cost to the Builder for the Emerald One-Bedroom Apartment ..................................... 104

Table 3-80. Overall Cost and Performance Data for One-Bedroom Apartment ......................................... 106

Table 3-81. Unit #1—Baseline Existing Conditions ........................................................................................... 108

Table 3-82. Unit #2—Baseline Existing Conditions........................................................................................... 109

Table 3-83. Unit #3—Baseline Existing Conditions........................................................................................... 109

Table 3-84. Unit #4—Baseline Existing Conditions ...........................................................................................110

Table 3-85. Unit #1—Bronze Green Remodel Rating.........................................................................................111

Table 3-86. Unit #1—Initial Cost to the Builder for Bronze Green Remodeling ...........................................111

Table 3-87. Unit #2—Bronze Green Remodel Rating ........................................................................................ 112

Table 3-88. Unit #2—Initial Cost to the Builder for Bronze Green Remodeling.......................................... 112

Table 3-89. Unit #3—Bronze Green Remodel Rating........................................................................................ 113

Table 3-90. Unit #3—Initial Cost to the Builder for Bronze Green Remodeling.......................................... 113

Table 3-91. Unit #4—Bronze Green Remodel Rating.........................................................................................114

Table 3-92. Unit #4—Initial Cost to the Builder for Bronze Green Remodeling...........................................114

Table 3-93. Unit #1—Silver Green Remodel Rating........................................................................................... 115

Table 3-94. Unit #1—Initial Cost to the Builder for Silver Green Remodeling............................................. 115

Table 3-95. Unit #2—Silver Green Remodel Rating........................................................................................... 115

Table 3-96. Unit #2—Initial Cost to the Builder for Silver Green Remodeling..............................................116

Table 3-97. Unit #3—Silver Green Remodel Rating............................................................................................116

Table 3-98. Unit #3—Initial Cost to the Builder for Silver Green Remodeling..............................................116

Table 3-99. Unit #4—Silver Green Remodel Rating ...........................................................................................117

Table 3-100. Unit #4—Initial Cost to the Builder for Silver Green Remodeling............................................117

Table 3-101. Unit #1—Gold Green Remodel Rating ...........................................................................................118

Table 3-102. Unit #1—Initial Cost to the Builder for Gold Green Remodeling..............................................118

Table 3-103. Unit #2—Gold Green Remodel Rating...........................................................................................119

Table 3-104. Unit #2—Initial Cost to the Builder for Gold Green Remodeling .............................................119

Table 3-105. Unit #3—Gold Green Remodel Rating...........................................................................................119

Table 3-106. Unit #3—Initial Cost to the Builder for Gold Green Remodeling ............................................ 120

Table 3-107. Unit #4—Gold Green Remodel Rating .......................................................................................... 120

Table 3-108. Unit #4—Initial Cost to the Builder for Gold Green Remodeling ............................................ 120

Table 3-109. Unit #1—Emerald Green Remodel Rating.................................................................................... 121

Table 3-110. Unit #1—Initial Cost to the Builder for Emerald Green Remodeling ...................................... 121

Table 3-111. Unit #2—Emerald Green Remodel Rating.................................................................................... 122

Table 3-112. Unit #2—Initial Cost to the Builder for Emerald Green Remodeling...................................... 122

Table 3-113. Unit #3—Emerald Green Remodel Rating.................................................................................... 123

LIST OF TABLES
xii AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-114. Unit #3—Initial Cost to the Builder for Emerald Green Remodeling...................................... 123

Table 3-115. Unit #4—Emerald Green Remodel Rating.................................................................................... 123

Table 3-116. Unit #4—Initial Cost to the Builder for Emerald Green Remodeling...................................... 124

Table 3-117. Overall Cost and Performance Data for Unit #1.......................................................................... 125

Table 3-118. Overall Cost and Performance Data for Unit #2 ......................................................................... 126

Table 3-119. Overall Cost and Performance Data for Unit #3.......................................................................... 127

Table 3-120. Overall Cost and Performance Data for Unit #4......................................................................... 128

List of Graphics

Graph A-1. Incremental Cost To Achieve NGBS Green Ratings .....................................................................xvi

Graph A-2. Incremental Renovation Cost To Achieve NGBS Green Remodeling Ratings ...................... xvii

Graph 4-1. Incremental Cost of Energy Renovations ....................................................................................... 130

List of Charts

Chart 3-1. Map of Climate Zones .......................................................................................................................... 17

Chart 4-1. Annual Energy Cost Distribution for the Original Baseline AMT2356A Design.................... 132

Chart 4-2. Annual Energy Cost Distribution for the Silver-Rated AMT2356A Design............................. 133

Chart 4-3. Annual Energy Cost Distribution for the Maryland Multifamily Unit #2 Design................. 133

Chart 4-4. Annual Energy Cost Distribution for the Silver-Rated Unit #2 Design.................................... 134

Photo

Photo 3-1. Multifamily Demonstration for NGBS Green Remodel Path ...................................................... 107
EXECUTIVE SUMMARY xiii

Executive Summary

Using the National Green Building Standard (NGBS) as the benchmark, this report provides 

a retrospective evaluation of affordable housing designs that were built in compliance with 

various green building programs. In addition, the report identifies how green remodeling can 

enhance older houses (residential structures built on or before December 31, 1979). The National 

Association of Home Builders (NAHB) Research Center selected eight affordable house designs 

and four multifamily apartment units to evaluate; Table A-1 summarizes these designs and units.

Table A-1. Description of Affordable House Designs and Pre-1980 Multifamily Apartment

House Type House Design Details and Green Program

LRAa

KC910

Site-built housing, three-bedroom unit, 910 ft2

, Climate Zone #2, 2006 IRCa, built in 

2007 as part of the Hidden Cove (AHPPa

) Development (Disaster Recovery Program), 

(Green Program: None)

City of Bayou La Batre

AMT2356A

Factory-built modular housing, two-bedroom unit, 967 ft2

, Climate Zone #2, 2006 

IRC, built in 2008 as part of the Safe Harbor (AHPPa

) Development (Disaster 

Recovery Program), (Green Program: None), ENERGY STAR

OHAa

Townhouse

Site-built townhouse, two-bedroom unit, 1,105 ft2, Climate Zone #3, 2007 California 

Building Code, started in 2009 as part of the Tassafaronga Development, (Green 

Program: LEED-ha

)

RRHAa

Rowhouse

Site-built rowhouse, three-bedroom unit, 1,656 ft2, Climate Zone #4, 2006 Virginia 

Building Code, started in 1997 as part of the Blackwell Development, (Green 

Program: EarthCraft), ENERGY STAR 

SHAa

Two-Story Multiunit

Site-built two-story multiunit, two-bedroom unit, 946 ft2, Climate Zone #4, 2003 

Seattle Code, started in 2004 as part of High Point, (Green Program: Breathe Easy 

Homes), ENERGY STAR

AMHAa

Townhouse Type A

Site-built townhouse Type A, two-bedroom unit, 1,296 ft2, Climate Zone #5, 2003 

IRC, started in 2005 as part of Edgewood Homes (Green Program: Ohio Green 

Community)

AMHAa

Single-Family Type D

Site-built single-family Type D, four-bedroom unit, 1,908 ft2, Climate Zone #5, 2003 

IRC/OBC, started in 2005 as part of Edgewood Homes (Green Program: Ohio Green 

Community)

CMHAa

One-Bedroom Apartment

Site-built apartment building, one-bedroom unit, 658 ft2, Climate Zone #5, 2003 IRC/

OBC, started in 2004 as part of Valley View Homes (Green Program: Ohio Green 

Community)

Pre-1980 Multifamily

Units #1–#4

Site-built apartment building, one- and two-bedroom units, 485 ft2

 and 820 sq-ft2, 

Climate Zone #4, built on or before December 31, 1979, in accordance with BOCAa

, 

renovation candidate for HOME program, (Green Program: None)

a

 LRA = Louisiana Recovery Authority; IRC = International Residential Code; OHA = Oakland Housing Authority; LEED = Leadership in Energy 

and Environmental Design; RRHA = Richmond Redevelopment Housing Authority; SHA = Seattle Housing Authority; AMHA = Akron Metropolitan 

Housing Authority, CMHA = Cuyahoga Metropolitan Housing Authority, and AHPP = Alternative Housing Pilot Program; BOCA = Building Officials 

Code Administrators International. 
xiv AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The NGBS promotes a balanced approach to green building by requiring a minimum level of 

green performance in all green categories (that is, Land/Lot Use, Resource Efficiency, Energy 

Efficiency, Water Efficiency, Indoor Environmental Quality, and Green Education for Owner). In 

fact, the Cincinnati Chapter of the American Institute of Architects (AIA Cincinnati) recognizes 

that the “NGBS requires higher point totals within each division as higher certification levels are 

sought. LEED does not require higher point totals within each division when seeking higher tier 

certification [rating]; only the minimum point level is required, allowing for a project to possibly 

be very strong in several divisions and weak in others. The committee applauds the NGBS 

requirement for higher point totals within each division as higher certification is sought, thus 

creating a more balanced project.”1

The affordable designs that were built with green programs lacked a balanced approach to green 

building; instead, these designs focused on maximizing one or two categories of green building, 

while other areas were rated lower or neglected. Table A-2 summarizes the baseline NGBS rating 

for the eight affordable house designs. We did not include the pre-1980 multifamily apartment 

building in Table A-2 because it was evaluated using the NGBS green remodeling method, called 

the Green Remodel Path,2

 which we discuss later in this report.
EXECUTIVE SUMMARY xv

Table A-2. Baseline NGBS Ratings for the Eight Affordable House Designs

House Designs

and Specifications

Chapter 5

Lot Design, 

Preparation, 

and 

Development

Chapter 6 

Resource

Efficiency

Chapter 7 

Energy

Efficiency

Chapter 8

Water

Efficiency

Chapter 9

Indoor 

Environmental 

Quality

Chapter 10

Operation, 

Maintenance, 

and Building 

Owner 

Education

LRAa

KC910

26

NRa

52

Bronze

35

Bronze

16

Bronze

43

Bronze

0

NRa

City of Bayou La 

Batre

AMT2356A

21

NRa

56

Bronze

49

Bronze

5

NRa

71

Silver

1

NRa

OHAa

Townhouse

110

Gold

49

Bronze

145

Emerald

18

Bronze

43

Bronze

0

NRa

RRHAa

Rowhouse

68

Silver

78

Bronze

70

Silver

8

NRa

103

Gold

0

NRa

SHAa

Two-Story Multiunit

109

Gold

99

Silver

49

Bronze

11

NRa

104

Gold

6

NRa

AMHAa

Townhouse Type A

76

Silver

66

Bronze

53

Bronze

35

Silver

39

Bronze

0

NRa

AMHAa

Single-Family Type D

72

Silver

57

Bronze

42

Bronze

36

Silver

49

Bronze

0

NRa

CMHAa

One-Bedroom 

Apartment

96

Gold

81

Silver

19

NRa

10

NRa

46

Bronze

6

NRa

a LRA = Louisiana Recovery Authority; OHA = Oakland Housing Authority; RRHA = Richmond Redevelopment Housing Authority; SHA = Seattle 

Housing Authority; AMHA = Akron Metropolitan, CMHA = Cuyahoga Metropolitan Housing Authority, and NR = means not rated because the 

minimum required green points were not achieved for a given green category.

Most of the affordable designs were built before the American National Standards Institute 

approved the NGBD in January 2009. Therefore, we did not expect any of the designs to meet 

all the requirements of the NGBS, and we expected some variation across the green building 

categories, as shown in Table A-2. We estimated the incremental cost of achieving all NGBS 

ratings (that is, Bronze, Silver, Gold, and Emerald) compared with the baseline rating.

The team evaluated the pre-1980 multifamily apartment building using the NGBS Green 

Remodeling method. The evaluation focused on four of the eight apartment units. Table A-3 

summarizes the existing conditions for each apartment unit in terms of energy performance, 

water consumption, and Indoor Environmental Quality (IEQ) requirements. We estimated the 

incremental cost of achieving all NGBS Green Remodeling ratings (that is, Bronze, Silver, Gold, 

and Emerald) compared with the existing condition of each apartment unit.
xvi AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table A-3. Baseline Conditions of Pre-1980 Multifamily Units—Energy, Water, and IEQ

TYPE Energy Efficiency (e-Ratioa) Water Efficiency (gpdb) IEQc (Requirements)

Unit #1 2.15 51.4 Not met

Unit #2 1.51 43.3 Not met

Unit #3 1.64 45.7 Not met

Unit #4 1.95 53.2 Not met

a e-Ratio = computer modeled energy performance/the benchmark energy performance (2006 International Energy Conservation Code (IECC). 

When the e-Ratio is equal to 1, the house design meets the 2006 IECC requirements. When the e-Ratio is greater than 1, the house design does 

not meet the 2006 IECC requirements. When the e-Ratio is less than 1, the house design exceeds the 2006 IECC requirements. 

b gpd = gallons per day (which is applied to each occupant in the dwelling).

C IEQ = Indoor Environmental Quality.

Summary of Evaluation Results: The Affordable House 

Designs

Because most of the affordable house designs have significant green features, the incremental cost 

of improving the green rating is lower in categories in which green features already exist. In fact, 

if we were improving a design with no green features, the incremental cost would be higher but 

the green improvement would be greater. Graph A-1 illustrates the incremental cost of improving 

the baseline green ratings to a specified NGBS rating level (that is, Bronze, Silver, Gold, and 

Emerald).

Graph A-1. Incremental Cost to Achieve NGBS Green Ratings

0.00 

5.00 

10.00 

15.00 

20.00 

25.00 

30.00 

35.00 

40.00 

1 2 3 4 

cost ($)

Incremental Cost of Green Features per Sq. Ft.

KC-910

AMT2356A 

OHA Townhouse

Rowhouse

Two-Story Multi-Unit

Townhouse Type A

Townhouse Type D

One-BR Apartment

Green Rating

Bronze Silver Gold Emerald

Because the OHA (Townhouse) design has an Emerald rating in the energy-efficiency category 

and green-rated performance in all but one category, OHA has the lowest incremental cost 

to achieve the NGBS Silver, Gold, and Emerald ratings. The LRA (KC910), Bayou La Batre 

(AMT2356A), and CMHA (One-Bedroom Apartment) designs lack significant green features 

in two or three green categories; as a result, the corresponding incremental cost to make these 

designs fully compliant with the NGBS trends higher than the other affordable designs.
xvii

For all affordable designs in Graph A-1, the total incremental cost to achieve an NGBS Bronze 

rating ranges from $950 to $3,300. We consider this range the minimum estimated cost of making 

the original affordable designs equally strong in all categories of green building and compliant 

with the NGBS Bronze rating. The OHA (Townhouse) design can be made equally strong in all 

categories of green building for less than $3,600, which makes the design compliant with an NGBS 

Gold rating.

The simple payback period for water-efficiency improvements is less than 5 years for Bronze 

and Silver ratings and ranges from 5 to 13 years for Gold and Emerald ratings. Energy-efficiency 

practices were significant in most of the affordable house designs, and the incremental 

improvements typically exceeded a payback period of 30 years for most of the affordable designs, 

except the CMHA (One-Bedroom Apartment) design, which had minor energy-efficient features. 

We were able to improve the energy performance and achieve a simple payback period from 19 

to 21 years for the CMHA (One-Bedroom Apartment) design by specifying a centralized boiler 

system (with solar panels at the Gold and Emerald levels) to supply heat and hot water for the 

entire apartment building. This economy-of-scale approach to green building has real cost saving 

potential for multifamily housing.

Summary of Evaluation Results: The Pre-1980 Multifamily 

Apartment Building

To estimate the incremental cost of green remodeling, we examined the baseline conditions and 

then determined the green renovations necessary to achieve the Bronze, Silver, Gold, and Emerald 

ratings. Graph A-2 illustrates the incremental cost of improving the existing conditions of the four 

apartment units within the pre-1980 multifamily apartment building.

Graph A-2. Incremental Renovation Cost To Achieve NGBS Green Remodeling Ratings

0.00 

5.00 

10.00 

15.00 

20.00 

25.00 

1 2 3 4 

cost ($)

Incremental Cost of Green Features per Sq. Ft. Remodel

Unit #1 

Unit #2 

Unit #3 

Unit #4 

Green Rating

Bronze Silver Gold Emerald

EXECUTIVE SUMMARY

For these apartment units, the total cost to achieve the Bronze-level rating is estimated to be from 

$2,500 to $3,000, and the Silver-level rating is estimated to be from $4,000 to $5,300. This cost does 

not include the comprehensive audits to establish the existing conditions of the apartment units or 

the third-party verification of the improvements. The simple payback periods for the energy and 

water improvements are summarized in Table A-4.
xviii AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table A-4. Simple Payback Periods for Energy and Water Improvements

TYPE

Energy Improvement

(Simple Payback Perioda)

Water Improvement

(Simple Payback Perioda)

Bronze Silver Gold Emerald Bronze Silver Gold Emerald

Improved 20% 34% 43% 50% 20% 34% 43% 50%

Units #1 

through 4

6–8

years

6–9 

years

10–16 

years

14–22 

years

2–4 

years

2–4

years

3–4

years

4–6

years

a Simple payback periods for energy and water efficiency are based on the current cost estimates and projected savings; we do not consider future 

rate increases, inflation, replacement costs, or other conditions over the 30-year evaluation period.

The simple payback periods in Table A-4 are compelling for water-efficiency improvements and 

reasonable for energy-efficiency improvements, especially at the green remodeling Bronze- and 

Silver-level ratings. To realize this type of payback period, the house must have older plumbing 

fixtures and a low-efficiency hot-water heater or heating, ventilation, and air conditioning system.

Summary of Key Findings

The affordable housing designs in this study can be made equally strong in all areas of green 

building according to the NGBS for less than $3,600. Nonetheless, we believe that the U.S. 

Department of Housing and Urban Development’s (HUD’s) affordable housing programs, 

independent of the green program, could encourage the following basic improvements.

1.If HUD intends to specify a level of green performance, then the design specifications should 

identify mandatory green building requirements.

2.Because water conservation practices are lacking in most of the affordable designs based on the 

NGBS ratings in Table A-2, HUD needs to encourage more water conservation practices in green 

building because they are cost effective based on simple payback period data.

3.Because green education for homeowners was significantly lacking in most of the affordable 

designs based on the NGBS ratings in Table A-2, HUD needs to encourage more green education 

to greater ensure the proper use and maintenance of green technologies by the occupants.

4.Because most of the affordable housing designs were lopsided in their approach to green 

building based on the NGBS ratings in Table A-2, meaning that certain areas of green were very 

significant and others were neglected.

5.Because green remodeling for older homes can represent a significant improvement in terms of 

energy efficiency, water conservation, and indoor environmental quality and, because it has the 

added benefit of being cost effective, provided the homes have not been updated since 1980.
xix

Potential Policy Implications

For years, HUD has supported sustainability and affordability in its housing programs. Those 

programs were developed from existing industry guidelines and criteria that HUD developed. 

Subsequent to the establishment of HUD’s current housing programs was the approval of the 

National Green Building Standard, ICC 700-2008. The NGBS is a national, voluntary consensus3

standard that defines criteria for rating the environmental impact of design and construction 

practices to achieve conformance with specific performance levels for green residential buildings. 

All residential dwelling types are represented in the NGBS, including new construction and 

rehabilitation, single-family, multifamily, and residential portions of mixed-use buildings. The 

NGBS includes building lot and subdivision land development sustainability criteria. The analysis 

provided in this report identifies the gaps of green building attributes between selected HUD 

housing programs and the NGBS.

The findings summarized in Table A-2 indicate that HUD’s housing programs have fallen behind 

regarding the level of sustainability when gauged against the NGBS. When HUD considers 

updating its housing programs for sustainability and green building attributes, the NGBS is the 

preferred standard to determine those changes, according to federal policy on standards. Office of 

Management and Budget Circular A-1194

 establishes policies to improve the internal management 

of the Executive Branch. Consistent with Section 12(d) of P.L. 104-113, the National Technology 

Transfer and Advancement Act of 1995, this circular directs agencies to use voluntary consensus 

standards in lieu of nonconsensus standards and government-unique standards, except when 

they are inconsistent with the law or are otherwise impractical.

EXECUTIVE SUMMARY

1

Introduction

Green building has been a goal of many public and private organizations for decades. As a result, 

several green building programs have been developed that recognize a wide range of sustainable 

residential construction practices, including low-impact land development, energy efficiency, 

water conservation, healthy homes initiatives, and recycling. Although the specific details of each 

green building program can vary significantly, most programs offer design guidance, verification 

or inspection requirements, and final certification of residential developments and individual 

houses.

The U.S. Environmental Protection Agency (EPA) defines “green building” as “the practice of 

creating structures and using processes that are environmentally responsible and resourceefficient throughout a building’s life-cycle from siting to design, construction, operation, 

maintenance, renovation and deconstruction.”5

 Furthermore, EPA states that “the built environment 

has a vast impact on the natural environment, human health, and the economy. By adopting green 

building strategies, we can maximize both economic and environmental performance. Green 

construction methods can be integrated into buildings at any stage, from design and construction, to 

renovation and deconstruction. However, the most significant benefits can be obtained if the design 

and construction team takes an integrated approach from the earliest stages of a building project.”6

In recent years, HUD has evaluated green building practices and products through various 

research projects and field studies. In January 2008, as part of HUD’s Partnership for Advancing 

Technology in Housing (PATH) program, the NAHB Research Center (Research Center) 

completed a study that converted a conventional home design into a green-rated design using 

the NAHB Green Building Guidelines, a predecessor of the National Green Building Standard 

(NGBS). The house was built by the Lancaster County Career and Technology Center (a 

vocational high school), as part of the school’s Building Green Community Education project. The 

Research Center evaluated many green technologies and provided technical support during the 

construction process.7

This study aims to expand HUD’s green building research by evaluating the benefits of green 

practices that are prescribed in affordable housing designs and identifying green renovations 

that could improve the existing housing stock. The Research Center selected eight affordable 

house designs and four multifamily apartment units to evaluate using the NGBS. The evaluation 

protocol and methodology are defined in chapter 1.

Because most of the affordable house designs in this study were built in accordance with a green 

building program, we expect the initial green rating to be significant in various green categories; 

however, we do not expect any of the affordable house designs to meet all requirements of the 

NGBS. In fact, most of the affordable homes in this study were built before the American National 

Standards Institute (ANSI) approved the NGBS.

Our study is too limited to reach specific conclusions about the value of any given green 

program used by the public housing authorities to build their affordable developments. In fact, 

our evaluations are based on the available architectural designs and specifications, which were 

built several years ago. With this in mind, the reader should consider the baseline green ratings 

presented in chapter 2 as that which could be confirmed with available information.

INTRODUCTION
2 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

In chapter 3, we incrementally improve the baseline green ratings up to the Emerald level. The 

following general assumptions were made to standardize our evaluation.

• If a design is built in compliance with 2006 International Residential Code (IRC), then we 

assume no additional costs are incurred to meet mandatory green requirements that are 

equivalent to 2006 IRC code minimums.

• If a design is built to the 2003 IRC (or a previous code version), we will identify an estimated 

additional cost to build the design in compliance with 2006 IRC during the baseline rating 

evaluation.

• Because documentation of green products and practices is an essential part of designing a 

green-rated house, we do not assume that green products and practices are in use if they 

are not identified within the drawings or specifications. Therefore, the baseline rating 

is developed based on the documentation—in some cases, green products and practices 

could have been used in construction but were not fully documented in the design and 

specification materials that we received for the study.

• Because actual air infiltration performance is unknown for most of the house designs in 

the study, we assumed that all designs were built to the minimum standards of the IECC 

2006 with regard to envelope and duct tightness (that is, SLA = 0.00036 and DSE 80 percent, 

respectively) because doing so would further indicate compliance with the 2006 IRC.

• Other performance provisions embodied in 2006 IRC—such as using Manual J for HVAC 

system design and sealing ducts with code-approved adhesives—were assumed to be in 

practice if the design was identified to be in compliance with 2006 IRC. Nonetheless, if 

documentation for Manual J compliance was not included in the design and specification 

materials, the baseline rating did not receive credit for this mandatory green requirement.

• The performance approach to calculating energy efficiency improvement defined in the IECC 

2006 was followed—only modeled heating, cooling, and water-heating loads are contained in 

the efficiency improvement calculation. Detailed energy models are included in Appendix C.

• The initial costs (that is, direct cost of construction and overhead) are the costs that a builder 

would incur to implement the green products and practices.

• The operation and maintenance costs are the costs that an owner would incur to maintain the 

green products and practices.

• The replacement costs are the costs that an owner would incur to replace a green product 

assuming a 30-year period.

• A one-time cost is associated with developing the documentation system for green building. 

This one-time cost will vary based on the experience of the builder and the code jurisdiction 

where construction is occurring. This cost should be considered an investment in green 

building.

In chapter 4, we identify cost effective green building approaches that can be implemented in 

affordable house designs independent of the green program. We recommend green research 

topics that can validate expected green benefits and quantify the impact of occupant behavior on 

green performance, especially in the areas of energy efficiency and water conservation.
3

Chapter 1.

Evaluation Protocol

1.1 National Green Building Standard

The ANSI approved ICC-700-2008 National Green Building Standard (NGBS) is a consensus 

standard that was codeveloped by the National Association of Home Builders (NAHB) and the 

International Code Conference (ICC). The NGBS is the only ANSI-recognized green rating system 

for residential buildings. The standard defines four rating levels in Table 1-1.

Table 1-1. Rating Levels for the National Green Building Standard

NGBS

Achievement Level

Lowest

↓

Highest

Bronze

Silver

Gold

Emerald

NGBS = National Green Building Standard

The NGBS can be used to rate single-family and multifamily homes, residential remodeling 

projects, and site-development projects and still allow for the flexibility that is required for 

regionally appropriate best green practices.8

 In this study, the NGBS is used to evaluate various 

residential designs and determine the cost and benefits of achieving various levels of green 

building (that is, Bronze, Silver, Gold, and Emerald). Table 1-2 summarizes the minimum green 

points required to achieve different levels of green building as defined by the NGBS.

Table 1-2. Threshold Point Ratings for Green Buildings

Green Building Category

Performance Point Levels a, b

Bronze Silver Gold Emerald

1. Chapter 5 Lot Design, Preparation, and Development 39 66 93 119

2. Chapter 6 Resource Efficiency 45 79 113 146

3. Chapter 7 Energy Efficiency 30 60 100 120

4. Chapter 8 Water Efficiency 14 26 41 60

5. Chapter 9 Indoor Environmental Quality 36 65 100 140

6. Chapter 10 Operation, Maintenance, and Building Owner 

Education 8 10 11 12

7. Additional Points from any category 50 100 100 100

Total Points 222 406 558 697

a In addition to the threshold number of points in each category, all mandatory provisions of each category are implemented.

b For dwelling units greater than 4,000 ft2 (372 m2

), the number of points in Category 7 (Additional Points from any category) is increased in 

accordance with Section 601.1. The Total Points are increased by the same number of points.

CHAPTER 1
4 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The NGBS provides two possible options to achieve a green rating for an existing residential 

structure that is being remodeled. The renovation can be a project that simply improves features 

within the residential structure without increasing the size of the living space, or it can be a 

project that includes an addition to the existing floor space that is less than 75 percent of the 

original conditioned living space. If the renovation increases the conditioned living space beyond 

75 percent of the original conditioned living space, then one must follow the green certification 

process for new construction.

The first option, called the Green Building Path, is required for all residential structures built after 

January 1, 1980. This option requires that all threshold points in Table 1-2 be achieved, along with 

all mandatory renovation/addition practices defined within the NGBS.

The second option, called the Green Remodel Path, is an alternative for houses built on or before 

December 31, 1979. This option is designed as a simplified method of improving older homes by 

focusing on reducing energy and water consumption, while improving indoor environmental 

quality. The Green Remodel Path offers a means of improving older home performance by 

targeting discreet levels of performance and verifying that the target performance was met 

through third-party audits and actual energy and water bills. Table 1-3 contains the threshold 

ratings for green remodeling.

Table 1-3. Remodeling Threshold Ratings for Energy and Water Consumption Reductions

Green Remodel Path Performance Level Improvementsa

Bronze Silver Gold Emerald

Reduction in Energy and Water 

Consumption in Accordance with Section 

305.5.5

20% 34% 43% 50%

a

 Defines the percentage of reduction in energy and water consumption required to achieve the rated level of green remodeling in accordance with 

National Green Building Standard (NGBS).

In addition to the reductions in energy and water consumption in Table 1-3, the following indoor 

environmental quality requirements must be met during the remodeling project.

• Section 901.1.1—Natural draftspace-heating or water-heating equipment is not located in the 

conditioned spaces.

• Section 901.5—New Carpets are in accordance with emissions levels of CDPH 01350, as 

certified by a third party, such as CRI Green Label Plus IAQ Program.

• Section 902.1—Spot ventilation is required in Bathrooms, Kitchens, and Clothes Dryers—all 

must be vented outside and meet the prescribed ventilation rates in the NGBS.

• Section 902.4(2)—HVAC supply registers, return grilles, and duct terminations are inspected 

and vacuumed. In addition, the coils are inspected and cleaned, and filters are replaced if 

necessary.

• Section 904.3(1)—Replace any existing unsealed combustion gas dryer vent with a sealed 

exhaust vent (and ducted make-up air is provided).
5

1.2 Defining the Cost and Benefit Analysis

In this report, we estimate cost for each green practice. We consider the direct cost (that is, green 

products and labor) and, where possible, the operating, maintenance, and replacement costs when 

selecting green practices. Ultimately, affordability is a primary objective of the cost-benefit study.

Direct costs of construction. We define direct costs of construction as those that can be traced 

directly to the finished product—the house. In residential construction, direct costs for the lot and 

direct costs for the house are frequently tracked separately because of the emphasis on the cost 

per square foot of the building. This report follows convention and tracks these costs as direct-lot 

and direct-house costs.

We estimated direct costs of construction based on a database developed by the NAHB Research 

Center and a team of builders from around the country for ASHRAE in 2008,9

 R.S. Means 2009, 

28th Annual Editions (cost sets),10 and internet/distributor/big box supplier survey in 2009. Costs, 

including sales tax, delivery, installation labor, and trade contractor’s overhead and profit, are 

reported as to the builder. Costs were developed at the national level.

Overhead costs. We define overhead costs as program or personnel development expenses that do 

not directly benefit a product, but that support the organization’s development of the product(s). 

Overhead costs tend to be allocated across production as an expense; thus, the greater the 

production volume, the less the overhead allocated per product. Because of this fact and to avoid 

overstating the effect of overhead costs on direct costs, particularly for this study, overhead costs 

associated with implementing a green building program are highlighted separately.

Overhead costs per hour for several classes of employee were estimated from Bureau of Labor 

Statistics average wage rates adjusted by 27 percent for taxes and insurance. Rates were multiplied 

by the estimated hours required to complete the action. The number of people and hours 

estimated are minimums, because they will vary by the size of the organization. An average wage 

rate of $47/hr was used for administrative functions, $37/hr was used for general maintenance, 

and $130/hr for green consultation (Appendix A—Labor Cost Chart shows details).11

Annual operating costs. We define annual operating costs as the estimated energy and water 

costs a homeowner or occupant would pay for utilities. We use EnergyGauge® computer 

simulation results to estimate the annual energy costs. We base the annual water costs on an 

estimated average daily water usage rate per person and the local water utility rates. We do not 

adjust the annual water utility rate for projected increases, inflation, or other conditions over the 

30-year evaluation period. These costs are not builder costs.

Maintenance costs. We base maintenance costs on product information and standard 

maintenance agreements for appliances. The added cost of repainting and weatherproofing is also 

considered for a given product.

No-cost products and practices. The measures that make a project green are often preferential 

practices that builders can adopt with little or no additional cost. Therefore, a number of 

activities or products, not explicitly stated as features of the baseline house, are awarded points 

for compliance and assigned a zero cost. Examples of these common sense measures include 

developing a bill of materials and cut list to minimize framing material waste (for example, 

ordering precut lengths, exact piece counts, reusing bracing materials for blocking, and so 

CHAPTER 1
6 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

on). These types of practices help demonstrate that green building is not merely a purchased 

commodity; it is a way of doing business with an awareness of the environmental impact of the 

processes.

Further, if an above-code specification or feature was available at no additional cost and a codeminimum product was not widely available, the upgraded item was chosen. Examples of no-cost, 

above-code specifications include an 80 Annual Fuel Utilization Efficiency (AFUE) furnace (78 

AFUE is the code-minimum), a 0.62 EF water heater (0.58 is the minimum), and an ENERGY STAR 

dishwasher. All these more efficient performers (from a green building perspective) are available 

at costs comparable to an alternative model of lesser efficiency. When determining that a green 

option is at no additional cost, we compare the cost of the green product or practice with the cost 

of the original design specification.

Replacement costs. We determine replacement costs for those products or practices in which the 

life of the product is known by the manufacturer or established by other resources, such as the 

2006 NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components publication. 

The replacement cost may not be known for all new green technologies, but we provide this 

information when it is available.

Benefits of green building. We define the benefits of green building within the content of 

each chapter of the NGBS. Stated simply, Chapter 5: Lot Design, Preparation, and Development 

identifies practices that minimize the environmental impact on the land; Chapter 6: Resource 

Efficiency identifies practices that maximize the use of recycled, renewable, durable, and salvaged 

materials and reduce waste; Chapter 7: Energy Efficiency identifies practices that minimize 

the use of energy; Chapter 8: Water Efficiency identifies practices that minimize the use of 

water; Chapter 9: Indoor Environmental Quality identifies practices that minimize exposure to 

pollutants; and Chapter 10: Operation, Maintenance, and Building Owner Education focuses on 

educating the homeowner and occupants about the green features. Where possible, in this study, 

we also identify the cost savings that the green product or practice (that is, energy and water 

usage) generates. For other areas of green (lot design, resource efficiency, indoor environmental 

quality, and homeowner education on green), we base the benefits on the green practices or 

products selected and how these products and practices minimize environmental impact, reduce 

waste, and minimize exposure to pollutants.

Although some research efforts attempt to monetize many of these benefits, we have not done 

so in this report. For example, health benefits may result from improved indoor environmental 

quality, but this benefit is not monetized in terms of fewer doctor visits, increased productivity, or 

improved quality of life. In general, the more green points accrued the greater the benefit; hence, 

the incremental green ratings (that is, Bronze, Silver, Gold, and Emerald).
7

1.3 The Greening Process

Create a baseline12 green rating for each house design using existing drawings and specifications.

Case #1: If the baseline is “unrated” (meaning that the house design does not meet all the 

requirements of the NGBS to achieve a green rating), then we will incrementally modify the 

design to meet each performance level of green building (that is, Bronze, Silver, Gold, and 

Emerald).

Baseline (“Not Rated”)  Bronze  Silver  Gold  Emerald

Case #2: If the baseline is “rated” (meaning the house design does meet one of the rating levels 

[that is, Bronze, Silver, Gold, and Emerald] as per NGBS), then we will incrementally modify the 

design to meet each of the remaining levels of green building (but we will not create an unrated 

example).

Baseline (Bronze)  Silver  Gold  Emerald

Bronze  Baseline (Silver)  Gold  Emerald

Bronze  Silver  Baseline (Gold)  Emerald

Bronze  Silver  Gold  Baseline (Emerald)

Next, the following methodology is used when selecting green practices to achieve various levels 

of green building based on NGBS.

1.First, implement all mandatory green practices.

2.Second, obtain the minimum threshold points for each level of green building as defined by 

each chapter within the NGBS (Table 1-2). When achieving these minimum threshold points, 

identify and select the most affordable green practices first (for each green building category). 

For Chapter 7, Energy Efficiency, we applied the performance path as per the requirements of 

Section 702 in the NGBS (corresponding energy models are in Appendix C).

3.Third, obtain the additional points for each level of green building as defined by each chapter 

within the NGBS (Table 1-2). When achieving these additional points, identify the most 

affordable green practice available across all green building categories. If two green practices 

are equally cost effective and one of the practices is within Chapter 9 (Indoor Environmental 

Quality), we will select the Chapter 9 green practice. This approach will enable us to maximize 

the IEQ benefits without sacrificing affordability.

4.Finally, when selecting alternative materials during the green process, we will first try to 

identify material alternatives that are green versions of the originally specified material, so that 

the original design intent is maintained.

CHAPTER 1
8 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
9

Chapter 2.

Overview of the Baseline Green 

Ratings

2.1 Baseline Green Ratings for Affordable House Designs

Using the NGBS, we developed initial green ratings for eight affordable house designs and four 

multifamily apartment units. Each initial green rating was used to establish a baseline of green 

performance, one that we incrementally improved up to the Emerald level rating. For each 

incremental improvement, we identified the corresponding cost and the increased benefit (based 

on accrued green points and specific green construction practices).

The affordable house designs were evaluated in six green categories, which were quantified in 

terms of green points to determine a rating level (that is, Bronze, Silver, Gold, Emerald—or NR [no 

rating, if the points do not meet a minimum threshold]). Table 2-1 summarizes the baseline green 

ratings for the eight affordable house designs.

Table 2-1. Baseline NGBS Ratings for the Eight Affordable House Designs

House Designs

and Specifications

Chapter 5

Lot Design, 

Preparation, 

and 

Development

Chapter 6 

Resource

Efficiency

Chapter 7 

Energy

Efficiency

Chapter 8

Water

Efficiency

Chapter 9

Indoor 

Environmental

Quality

Chapter 10

Operation, 

Maintenance, 

and Building 

Owner 

Education

LRAa

KC910

26

NR

52

Bronze

35

Bronze

16

Bronze

43

Bronze

0

NR

City of Bayou La Batre

AMT2356A

21

NR

56

Bronze

49

Bronze

5

NR

71

Silver

1

NR

OHAa

Townhouse

110

Gold

49

Bronze

145

Emerald

18

Bronze

43

Bronze

0

NR

RRHAa

Rowhouse

68

Silver

78

Bronze

70

Silver

8

NR

103

Gold

0

NR

SHAa

Two-Story Multiunit

109

Gold

99

Silver

49

Bronze

11

NR

104

Gold

6

NR

AMHAa

Townhouse Type A

76

Silver

66

Bronze

53

Bronze

35

Silver

39

Bronze

0

NR

AMHAa

Single-Family Type D

72

Silver

57

Bronze

42

Bronze

36

Silver

49

Bronze

0

NR

CMHAa

One-Bedroom 

Apartment

96

Gold

81

Silver

19

NR

10

NR

46

Bronze

6

NR

a AMHA = Akron Metropolitan. CMHA = Cuyahoga Metropolitan Housing Authority. LRA = Louisiana Recovery Authority. OHA = Oakland Housing 

Authority. RRHA = Richmond Redevelopment Housing Authority. SHA = Seattle Housing Authority.

CHAPTER 2
10 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The six categories of green building identified in Table 2-1 represent a comprehensive definition of 

sustainable construction practices and green education reflected in the content of each chapter of 

the NGBS. Stated simply, Chapter 5: Lot Design, Preparation, and Development identifies practices 

that minimize the environmental impact on the land; Chapter 6: Resource Efficiency identifies 

practices that maximize the use of recycled, renewable, durable, and salvaged materials and 

reduce waste; Chapter 7: Energy Efficiency identifies practices that minimize the use of energy; 

Chapter 8: Water Efficiency identifies practices that minimize the use of water; Chapter 9: Indoor 

Environmental Quality identifies practices that minimize exposure to pollutants; and Chapter 10: 

Operation, Maintenance, and Building Owner Education focuses on educating the homeowner 

and occupants about the green features. When we consider the details of each original design, the 

following observations are made.

Lot Design, Preparation, and Development was a core consideration for all affordable house 

developments that used a green building program. The Tassafaronga, High Point, and Valley 

View Homes developments were rated Gold due to their extensive use of low-impact development 

practices and development of grayfield, brownfield, and infill lots. The Blackwell and Edgewood 

developments were rated Silver due to moderate use of low-impact development practices. For 

houses built without a green building program, such as the Safe Harbor development in Bayou 

La Batre, Alabama, and the Hidden Cove development in Baton Rouge, Louisiana, the land 

and lot development practices did not meet the rating requirements of NGBS. Although both 

developments were compliant with 2006 IRC, code compliance alone was not enough to achieve a 

green rating in this category.

Resource Efficiency was a core consideration for all affordable house designs including the houses 

that were built without a green building program. The High Point (Two-Story Multiunit) and 

Valley View Homes (One-Bedroom Apartment) designs were rated Silver due to their moderate 

use of optimal lumber sizes, prefabricated components, and recycled construction materials. 

The Hidden Cove (KC910), Tassafaronga (Townhouse), Blackwell (Rowhouse) and Edgewood 

(Townhouse Type A and Single-Family Type D) designs were rated Bronze due to some use 

of optimal lumber sizes, prefabricated components, and recycled construction materials. The 

Safe Harbor (AMT236A) design was rated Bronze and built in a factory, which extensively used 

prefabricated components and optimal lumber sizes. Improvements in resource efficiency may 

require some modified construction practices to reduce waste and some alternative construction 

materials. Only the Safe Harbor (AMT2356A), High Point (Two-Story Multiunit), and Valley View 

Homes (One-Bedroom Apartment) met all mandatory NGBS green rating requirements. Although 

the other designs had enough total accrued points to achieve a rating, these designs cannot be 

rated for resource efficiency until the mandatory requirements13 are met.

Energy Efficiency was a core consideration for all affordable house designs including the houses 

that were built without a green building program, but the baseline green ratings cover the full 

spectrum of possibilities. Before considering the energy rating details of each affordable design, 

consider how NGBS defines the three following methods of achieving an energy rating.
11

1.Any ENERGY STAR-certified home can be rated Bronze through the Alternative Bronze Level 

Compliance method. This Bronze rating does not consider the energy performance details of the 

house, it is simply awarded based on the ENERGY STAR home certification.

2.Any house can be rated through the Prescriptive Path method, which requires compliance with 

Section 703 and implementation of a minimum of two practices from Section 704 of the NGBS. 

The Prescriptive Path can be used only to achieve a Bronze, Silver, or Gold rating; this method 

cannot be used to achieve an Emerald rating. The prescriptive method allows for points to be 

accrued based on the selection of specific building envelope, insulation, window, HVAC, and 

water heater design features within the NGBS.

3.Any house can be rated through the Performance Path method, which requires compliance with 

Section 702 and implementation of a minimum of two practices from Section 704 of the NGBS. 

The Performance Path can be used to achieve a Bronze, Silver, Gold or Emerald rating. The 

performance method allows for points to be accrued based on energy modeling as defined by the 

2006 IECC.14 Four energy improvement thresholds are defined (that is, 15, 30, 50, and 60 percent); 

each threshold equals the minimum point requirements for Bronze, Silver, Gold, and Emerald, 

respectively. Points cannot be accrued from both the performance and prescriptive methods.

During the development of a baseline energy efficiency rating for the affordable house designs, we 

considered all three energy rating methods and decided to use the performance method for two 

reasons. First, because our study develops an Emerald rating for each affordable house design, 

the performance method is required. For consistency and quantitative analysis, we decided to use 

the performance method for all incremental improvements. Second, because our study considers 

the incremental cost of energy improvements, energy modeling software15 provides an accurate 

method of calculating and comparing cost reductions due to performance improvements. In Table 

2-2, we compare the total points accrued for the baseline energy efficiency rating with the energy 

modeling results based on the NGBS Performance Path method.

Table 2-2. Total Accrued Green Points Versus Performance Path

House Designs

and Specifications

Chapter 7

Energy Efficiency Total Points

e-Ratioa

1 = 2006 IECC

Energy Modeling Performance

LRAa

KC910

35

Bronze

0.91

NR

City of Bayou La Batre

AMT2356A

49

Bronze

0.92

NR

OHAa

Townhouse

145

Emerald

0.36

Emerald

RRHAa

Rowhouse

70

Silver

0.85

Bronze

SHAa

Two-Story Multiunit

49

Bronze

0.89

NR

AMHAa

Townhouse Type A

53

Bronze

0.94

NR

continued on next page

CHAPTER 2
12 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 2-2. Total Accrued Green Points Versus Performance Path (cont.)

House Designs

and Specifications



Chapter 7

Energy Efficiency Total Points

e-Ratioa

1 = 2006 IECC

Energy Modeling Performance

AMHAa

Single-Family Type D

42

Bronze

0.88

NR

CMHAa

One-Bedroom Apartment

19

NR

0.96

NR

a e-Ratio = computer modeled energy performance and the benchmark energy performance (in this case 2006 IECC).

The energy modeling performance results are expressed as an e-Ratio. When the e-Ratio = 1, then 

the energy performance is the same as the benchmark. In our case, the benchmark is defined 

as 2006 IECC, so any e-Ratio equal to 1 meets the 2006 IECC requirements. When the e-Ratio is 

greater than 1, then the energy performance is worse than the 2006 IECC. When the e-Ratio is less 

than 1, then the energy performance is more efficient than the 2006 IECC. The NGBS Performance 

Path thresholds (that is, 15, 30, 50, and 60 percent) are equal to e-Ratios of 0.85, 0.70, 0.50, and 0.40, 

respectively. The baseline energy modeling results in Table 2-2 indicates that all affordable house 

designs including the houses that were built without a green building program perform more 

efficiently than the 2006 IECC.

The Safe Harbor (AMT2356A), Blackwell (Rowhouse), and High Point (Two-Story Multiunit) 

designs are certified ENERGY STAR designs and have e-Ratios equal to 0.92, 0.85, and 0.89, 

respectively. A Bronze rating can be obtained under the alternative compliance method for 

all three designs, but the Blackwell (Rowhouse) design also meets the performance method 

requirements for a Bronze rating. The reason an ENERGY STAR design may fall short of an 

e-Ratio of 0.85 is because the ENERGY STAR design must be 15 percent more efficient than a 

house built in accordance with 2004 International Residential Code (IRC).16 Because the NGBS 

benchmarks energy performance against the 2006 IECC, minor incremental energy improvements 

were required to achieve a Bronze rating using the performance method for the Safe Harbor and 

High Point designs.

The Tassafaronga (Townhouse) design has an e-Ratio of 0.36, which equals an Emerald rating due to 

the use of a solar water heater, a high-efficiency boiler, and several ENERGY STAR-rated appliances. 

Nonetheless, mandatory compliance verification for the radiant space-heating system was not met.

The Hidden Cove (KC910) and Edgewood (Townhouse Type A and Single-Family Type D) designs 

have e-Ratios equal to 0.91, 0.94, and 0.88, respectively. Although the accrued point totals meet the 

Bronze rating based on the prescriptive method of compliance, these designs lack a number of 

mandatory requirements. Incremental energy improvements were required to achieve a Bronze 

rating for these designs.

The Valley View Homes (One-Bedroom Apartment) design has an e-Ratio of 0.96 meaning 

that it performs more efficiently than the 2006 IECC, but the design has 19 total green points, 

which means it cannot be rated. When apartment buildings are evaluated using the NGBS, each 

apartment unit type must comply with the green rating threshold requirements. After evaluating 

every apartment unit type within the Valley View Homes apartment building we selected the 
13

worst performing unit to incrementally improve. Although other apartment unit types performed 

more efficiently than the One-Bedroom Apartment design, the Valley View Homes apartment 

building rating is based on the performance of the worst unit type; as a result, the overall green 

rating was NR. In addition, several mandatory requirements were unmet. Incremental energy 

improvements were required to achieve a Bronze rating for this design.

Water Efficiency was a core consideration for one-half of the affordable house designs including 

one house that was built without a green building program. The Edgewood (Townhouse Type 

A and Single-Family Type D) designs were rated Silver due to their moderate use of low-flow 

plumbing fixtures, water-conserving appliances, and landscaping practices that limit water use. 

The Tassafaronga (Townhouse) and Hidden Cove (KC910) designs were rated Bronze due to some 

use of low-flow faucets, water-conserving appliances, and low-volume irrigation systems. The Safe 

Harbor (AMT2356A), Blackwell (Rowhouse), High Point (Two-Story Multiunit), and Valley View 

Homes (One-Bedroom Apartment) designs did not meet the water-efficiency rating requirements 

of NGBS. The Edgewood, Tassafaronga, and Hidden Cove designs met all mandatory NGBS green 

rating requirements. Basic water-efficiency improvements can be achieved by specifying low-flow 

plumbing fixtures, water-conserving appliances, and implementing efficient plumbing supply 

design. These minor changes in product specification and plumbing design can be made with 

little or no additional cost.

Indoor Environmental Quality was a core consideration for all affordable house designs including 

the houses that were built without a green building program. The Blackwell (Rowhouse) and 

High Point (Two-Story Multiunit) designs were rated Gold due to their extensive use of no- and 

low-Volatile Organic Compound (VOC) products, ENERGY STAR-rated exhaust fans, Minimum 

Efficiency Reporting Value (MERV) 8 filters, whole-building ventilation systems, and Breathe Easy 

HomeTM features. The Safe Harbor (AMT2356A) design was rated Silver due to moderate use of 

no- and low-VOC products, ENERGY STAR-rated exhaust fans, and several moisture management 

practices. The Hidden Cove (KC910), Tassafaronga (Townhouse), Edgewood (Townhouse Type 

A and Single-Family Type D), and Valley View Homes (One-Bedroom Apartment) designs were 

rated Bronze due to some use of no- and low-VOC products and ENERGY STAR-rated exhaust 

fans. For houses built without a green building program, such as the Safe Harbor (AMT2356A) 

and Hidden Cove (KC910) designs, indoor environmental quality was considered because of 

participation in the Alternative Housing Pilot Program (AHPP). Because formaldehyde was an 

issue with previous disaster recovery housing efforts, the AHPP participants specified products to 

minimize exposure to formaldehyde and VOC-emitting materials. Only the Hidden Cove (KC910), 

Safe Harbor (AMT2356A), and High Point (Two-Story Multiunit) met all mandatory NGBS green 

rating requirements. Although the other designs had enough total accrued points to achieve 

a rating, these designs cannot be rated for indoor environmental quality until the mandatory 

requirements are met.

Operation, Maintenance, and Building Owner Education was not a significant consideration 

for any of the affordable house designs including the houses that were built without a green 

building program. The High Point (Two-Story Multiunit) and Valley View Homes (One-Bedroom 

Apartment) developments provided operational and maintenance information to the occupants 

but this educational effort falls short of the Bronze rating requirement. All other developments 

provided virtually no educational material or training on the green features of the original designs.

CHAPTER 2
14 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Green education and training is critical to maximizing the potential benefits of a green-rated 

house. For example, a homeowner or occupant must be aware of thermostat operation and 

programming to maximize energy efficiency, without this basic training the occupant may 

never realize reduced energy use and cost savings. The difference in thermostat set point can 

be the difference between realizing Gold-rated energy performance and Bronze-rated energy 

performance. Because the maintenance schedule for solar or tankless water heaters may be 

different from conventional water heaters, the homeowner will need to be aware of any special 

requirements to ensure good operation and a valid warranty. The NGBS requires comprehensive 

green education and training that addresses specific features within the house and sustainable 

resources within the local community.

Total Points are important to achieving an overall NGBS green rating, but specific minimum 

points must also be achieved in each of the six green categories. The NGBS requires this balanced 

green building approach to ensure that no category of green is neglected and that all areas of 

green are equally strong. For example, this approach means an NGBS Gold-rated house has 

a minimum Gold rating performance in each of the six green categories. If one considers the 

baseline green ratings summarized in Table 2-1, none of the original affordable house designs 

have a balanced overall green design as defined by the NGBS, even when green building 

education is ignored.

After establishing the baseline green ratings for the original affordable house designs, we 

improved each green rating by incrementally advancing through the various levels (that is, 

Bronze, Silver, Gold, and Emerald) of green building as defined by the NGBS. First, we met all 

mandatory green building requirements were met, then specified the most cost-effective green 

practices for each category of green building until we achieved the overall green rating. The 

details of the original design and the baseline green rating in Table 2-1 greatly influence the 

process of making incremental green changes.
15

2.2 Baseline Green Remodeling Ratings for Multifamily 

Apartment Units

To demonstrate the potential benefits of green remodeling older residential structures, we 

evaluated an apartment building in Montgomery County, Maryland, that was built on or before 

December 31, 1979. The evaluation focused on four of the eight apartment units. A comprehensive 

field audit was performed on the units to establish baseline energy usage, water consumption, and 

identify whether five critical IEQ practices were met. Table 2-3 summarizes the baseline results 

for each apartment unit evaluated in terms of energy performance, water consumption, and IEQ 

requirements.

Table 2-3. Baseline Existing Conditions per Apartment Unit—Energy, Water, and IEQ

TYPE Energy Efficiency

(e-Ratioa) Water Efficiency (gpdb) IEQ(Requirements)

Unit #1 2.15 51.4 Not met

Unit #2 1.51 43.3 Not met

Unit #3 1.64 45.7 Not met

Unit #4 1.95 53.2 Not met

a e-Ratio = computer modeled energy performance and the benchmark energy performance (2006 IECC). When the e-Ratio is equal to 1, the house 

design meets the 2006 IECC requirements. When the e-Ratio is greater than 1, the house design does not meet the 2006 IECC requirements. When 

the e-Ratio is less than 1, the house design exceeds the 2006 IECC requirements. 

b gpd means gallons per day (which is applied to each occupant in the dwelling).

After establishing the baseline green ratings for the apartment units, we identified the mandatory 

IEQ improvements that must be made and then specified the most cost-effective green practices to 

achieve incremental improvements for each green remodeling level. 

CHAPTER 2
16 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
17

Chapter 3.

Case Studies: Making Green 

Improvements

We selected affordable housing developments that were supported by HOPE VI, HOME, and the 

Alternative Housing Pilot Program. This study evaluates single-family, multifamily, and disasterrelief housing in the following four climate zones illustrated in Chart 3-1.

Climate Zone #2:

Louisiana—Katrina Cottages (Disaster Relief Housing).

Alabama—Palm Harbor Homes (Disaster Relief Housing).

Climate Zone #3:

Oakland, California—Townhouse Duplex (Tassafaronga Development).

Climate Zone #4:

Richmond, Virginia—Single-Family House (Blackwell Development).

Seattle, Washington—Single-Family or Townhouse (High Point Development).

Green Remodeling: Multifamily Housing Built Before 1980 (Washington, D.C., Maryland, and 

Virginia—Climate Zone #4). 

Climate Zone #5:

Akron, Ohio—Single-Family House and Townhouse (Edgewood Development).

Cuyahoga, Ohio—Multifamily House (Tremont Point Development).

Chart 3-1. Map of Climate Zones a

1

2 2

2 3

3

4

4

5 5

6

6

7

Marine (C)

Dry (B) Moist (A)

All of Alaska in Zone 7

except for the following

Boroughs in Zone 8:

Bethel

Dellingham

Fairbanks N. Star

Nome

North Slope

Northwest Arctic

Southeast Fairbanks

Wade Hampton

Yukon−Koyukuk

Zone 1 includes

Hawaii, Guam,

Puerto Rico,

and the Virgin Islands

Warm−Humid

Below White Line

All of Alaska is in Zone 7 except for 

the following boroughs which are in 

Zone 8: Bethel, Dellingham, Fairbanks 

N. Star, Nome, North Slope, Northwest 

Arctic, Southest Fairbanks, Wade 

Hampton, Yukon-Koyukuk

Warm-Humid 

Below White Line

Zone 1 includes Hawaii, 

Guam, Puerto Rico, and 

the Virgin Islands

Climate Zone

= 1

= 2

= 3

= 4

= 5

= 6

= 7

CHAPTER 3

a Source: U.S. Department of Energy (http://www.energycodes.gov)
18 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

According to the U.S. Department of Energy, “Climate zones were developed based on a 

traditional system of climate classification used in many other disciplines. That classification 

provided quantitative definitions for three major climate types—humid climates, dry climates, 

and marine climates. These major climate types are important for buildings because they affect 

solar loads, humidity, daily temperature ranges, and whether heating and cooling seasons are 

short and intense or long and mild. These are all aspects of climate that cannot be addressed 

simply by looking at heating degree days—the primary basis for the current zones.

“In addition to the major humid/dry/marine climate types, climate divisions were defined based 

on thermal criteria. But instead of using heating degree days for the entire country, as has been 

done for the Model Energy Code (MEC) and IECC in the past, thermal divisions for coolingdominated regions of the country were defined based on cooling degree days. The selected 

thermal criteria resulted in mostly horizontal bands across the country with the hottest zone 

(#1) occupying the southern tip of Florida to the coldest zone (#8) covering the northern half 

of Alaska. Regular increments of heating and cooling degree days were selected that worked 

well climatologically, facilitated the representation of current code requirements, and enabled a 

substantial reduction in the number of zones.”17

3.1 Climate Zone #2

Baton Rouge, Louisiana, is located in climate zone 2A, a predominantly cooling, moist climate 

with 26,938 cooling degree hours (CDH)18 and 1,673 heating degree days (HDD)19. Bayou La Batre, 

Alabama, is located in climate zone 2A, a predominantly cooling, moist climate with 28,912 CDH 

and 1,694 HDD.

Traditionally, disaster-relief housing has been temporary housing provided by FEMA. After 

Hurricanes Katrina and Rita in 2005, at the direction of Congress, FEMA implemented an 

Alternative Housing Pilot Program (AHPP) to investigate other temporary and long-term housing 

options as part of the disaster recovery effort in the Gulf Coast region. Participants in the AHPP 

(that is, Mississippi, Louisiana, Alabama, and Texas) explored a wide range of disaster-relief 

housing, including permanent housing to rebuild neighborhoods.

3.1.1 Louisiana Disaster Relief Housing

In Louisiana, several single-family and multifamily designs were developed and built as part of 

the recovery effort. We selected the KC910 Model (a single-family, one-story house) in the Hidden 

Cove Development of Baton Rouge, Louisiana, to demonstrate the NGBS evaluation process. This 

house was not designed using a green building program.
19

KC910 Baseline Green Rating

Several green features are included in the original KC910 design; in fact, the baseline green rating 

exceeds the minimum threshold points for a Bronze rating in the areas of resource efficiency, 

energy efficiency, water efficiency, and indoor environmental quality. Nonetheless, many 

mandatory resource and energy efficiency practices and requirements were not implemented. 

The lot design and development specifications fall short of the Bronze minimum by 13 points, and 

the owner education documentation for green practices does not exist (because the house was not 

originally designed in accordance with a green program).

The KC910 design was built in accordance with 2006 IRC. Green points were achieved for 

building in an existing neighborhood (that is, Hidden Cove is an in-fill development). This area 

of Baton Rouge includes close proximity to a recreational youth center, mass transportation, and 

the development has good housing “density” (in terms of lot size and shared parking areas). 

The resource-efficient green features included a compact air-conditioned space (that is, 910 ft2, 

disaster-relief housing alternatives tend to be small houses), the use of optimal material sizes, 

pier and pad foundations, termite barriers, moisture prevention practices, and resource-efficient 

materials (such as engineered wood products). The energy efficient green features include the 

use of ENERGY STAR appliances (that is, refrigerator, dishwasher, and washing machine), HVAC 

cooling efficiency and heat pump heating efficiency, and ductwork design features. The waterefficient green features include using appliances that conserve water (that is, dishwasher and 

washing machine), minimizing the hot-water pipe runs, and using water-conserving fixtures (that 

is, faucets). The IEQ green features include using cabinets that are Kitchen Cabinet Manufacturers 

Association (KCMA) Environmental Stewardship Program compliant (that is, KCMA ESP 

01), sealing the living space to prevent contaminants, not having an attached garage or using 

combustion appliances, installing a carbon monoxide detector, and several moisture management 

practices including insulating plumbing and ductwork in unconditioned areas.

Although the original KC910 design falls short of the Bronze rating, the unit has several green 

features that put it well within reach of receiving a Bronze rating (that is, achieving a total of 172 

points). Table 3-1 summarizes the baseline rating and identifies where the design needs additional 

green features. Additional green-scoring details are in Appendix B.

CHAPTER 3
20 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-1. Baseline Rating for KC910 Model

Green Building Category

Bronzea

Required 

Points

Claimedb 

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, 

Preparation, and Development 39 26 — 13 Not applicable

Chapter 6: Resource Efficiency 45 52 7 — Not met

Chapter 7: Energy Efficiency 30 35 5 — Not met

Chapter 8: Water Efficiency 14 16 2 — Met

Chapter 9: Indoor 

Environmental Quality 36 43 7 — Met

Chapter 10: Operation, 

Maintenance, and Building 

Owner Education

8 0 — 8 Not met

Section Total 172 172 21 21

Additional Points 50 — 21 29

Total Points 222 172 — 50

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the KC910 Original Design.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

• The annual maintenance cost to achieve the base rating is $409 (Appendix A).

• The annual energy operating cost to achieve the base rating is $1,052 (Appendix A).

• The annual water operating cost to achieve the base rating is $578 (Appendix A).

• The 30-year lifetime replacement cost to achieve the base rating is $18,412 (Appendix A).
21

KC910 Incremental Green Ratings

The Bronze Rating

To achieve the Bronze rating, all mandatory green requirements were met (some of these 

requirements were implemented by 2006 IRC and were not explicitly documented in the designs 

and specifications). All chapter thresholds were achieved, including an additional 99 points. 

The Bronze rating requires only 222 points, but we were able to achieve 271 points simply by 

implementing green practices that added little or no cost to the project (for example, scheduling 

construction to minimize length of time soil is exposed, placement of utilities, and onsite 

supervision of green practices), specifying an integrated pest management plan to minimize 

chemical and fertilizer use, implementing a construction waste management plan, specifying 

green materials that have comparable cost to the originally specified materials, and selecting 

water-efficient fixtures that have comparable cost to the originally specified fixtures. 

The largest one-time cost of going green is the initial investment in developing green 

documentation and the homeowner’s binder templates. For this study, we estimated the goinggreen cost at $5,64020 (this cost will be the case for any rated level). Nonetheless, other green 

practices required additional costs, including a maintenance plan for vegetation, borate-treated 

Oriented Strand Board (OSB) for termites, energy modeling, mandatory caulking and sealing, and 

educational materials for the owner. Additional green-scoring details are in Appendix B. Table 3-2 

contains the Bronze rating summary.

Table 3-2. Bronze Rating for KC910 Model

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 51 12 — Not 

applicable

Chapter 6: Resource Efficiency 45 78 33 — Met

Chapter 7: Energy Efficiency 30 62 32 — Met

Chapter 8: Water Efficiency 14 18 4 — Met

Chapter 9: Indoor Environmental 

Quality 36 53 17 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 9 1 — Met

Section Total 172 271 99 0

Additional Points 50 — 99 0

Total Points 222 271 — 0

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

CHAPTER 3
22 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The Bronze Cost

The total initial cost to achieve the Bronze-level rating is shown in Table 3-3.

Table 3-3. Initial Cost to the Builder for the Bronze KC910 Model

Green Category Bronze Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 51 117

Chapter 6: Resource Efficiency 78 745

Chapter 7: Energy Efficiency 62 982

Chapter 8: Water Efficiency 18 0

Chapter 9: Indoor Environmental Quality 53 0

Chapter 10: Operation, Maintenance, and Building Owner Education 9 950

Total 271 $2,794

• The annual maintenance cost to achieve the Bronze rating is $409 (Appendix A).

• The annual energy operating cost to achieve the Bronze rating is $1,022 (Appendix A).

• The annual water operating cost to achieve the Bronze rating is $570 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Bronze rating is $18,412 (Appendix A).

The Bronze Benefits

The annual energy savings (compared with 2006 IECC—Chapter 7) are approximately a 

15-percent reduction in energy usage (Appendix C—Summary Data for Climate Zone 2 Baton 

Rouge, Louisiana). The annual water savings (compared with the Average Daily Per Capita Usage 

in Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) are approximately 

a 16.4-percent reduction in water usage (Appendix A—Indoor Water Usage Calculation Table 

for Baton Rouge, Louisiana). The energy efficiency is actually a low-level Silver rating, and the 

resource efficiency is very close to a Silver rating. Nonetheless, the overall green rating is Bronze 

because the total points are less than the Silver minimum, and most green categories are also less 

than the Silver minimum.

The Silver Rating

To achieve the Silver rating, we improved the Bronze-rated design by meeting the threshold 

chapter requirements and selecting an additional 104 points in green features. The Silver rating 

requires 406 points; we achieved 410 points by implementing additional plans for restoring 

natural vegetation and establishing areas for preserving trees and vegetation. To improve 

resource efficiency, additional prefabricated components and reusable materials are specified. 

To improve the energy efficiency, we improved the building enclosure insulation, heating and 

cooling equipment efficiencies, and location of the ductwork. The water efficiency was improved 

largely by green points associated with the landscape plan and no irrigation usage (the associated 

cost with this improvement was already captured in the lot design and development category). 

The IEQ was improved by specifying the use of low-VOC paints, adhesives, sealants, coatings, 

and MERV 8 filters (which are priced similarly to the original filters) and adding kitchen exhaust. 
23

The homeowner’s manual will include additional details. Additional green-scoring details are in 

Appendix B. Table 3-4 contains the Silver rating summary.

Table 3-4. Silver Rating for KC910 Model

Green Building Category

Silvera

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Silver

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 66 68 2 — Not Applicable

Chapter 6: Resource Efficiency 79 89 10 — Met

Chapter 7: Energy Efficiency 60 119 59 — Met

Chapter 8: Water Efficiency 26 33 7 — Met

Chapter 9: Indoor Environmental 

Quality 65 86 21 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 10 15 5 — Met

Section Total 306 410 104 0

Additional Points 100 — 104 0

Total Points 406 410 — 0

a Silver Required Points are the minimum green points needed to achieve a Silver Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Silver are the green points that exceed the Silver minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Silver minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Silver Cost

The total initial cost to achieve the Silver-level rating is shown in Table 3-5.

Table 3-5. Initial Cost to the Builder for the Silver KC910 Model

Green Category Silver Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 68 803

Chapter 6: Resource Efficiency 89 752

Chapter 7: Energy Efficiency 119 5,063

Chapter 8: Water Efficiency 33 0

Chapter 9: Indoor Environmental Quality 86 215

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 410 $7,877

• The annual maintenance cost to achieve the Silver rating is $409 (Appendix A).

• The annual energy operating cost to achieve the Silver rating is $909 (Appendix A).

• The annual water operating cost to achieve the Silver rating is $570 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Silver rating is $19,772 (Appendix A).

CHAPTER 3
24 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The Silver Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 32-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 2—Baton Rouge, 

Louisiana). The annual water savings (compared with the Average Daily Per Capita Usage in 

Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) are approximately 

a 16.4-percent reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for 

Baton Rouge, Louisiana). The energy efficiency is actually a Gold rating, and the homeowner 

education on green practices is at an Emerald rating. Nonetheless, the overall green rating is Silver 

because the total points are less than the Gold minimum and most green categories are also less 

than the Gold minimum.

The Gold Rating

To achieve the Gold rating, we improved the Silver-rated design by meeting the threshold 

chapter requirements and selecting an additional 102 points in green features. The Gold rating 

requires 558 points; we achieved 560 points by implementing additional soil disturbance and 

erosion practices, land preservation practices, and heat island mitigation practices. To improve 

resource efficiency, we specified additional preassembly components and indigenous materials, 

and specified advanced recycling methods (such as composting on site). To improve the energy 

efficiency, we upgraded the water heater to a solar water heater. To improve water efficiency, a 

central plumbing core system is added and low-flow toilets are specified. The IEQ was improved 

by specifying higher performance exhaust fans (in the bathroom and kitchen). Additional greenscoring details are in Appendix B. Table 3-6 contains the Gold rating summary.

Table 3-6. Gold Rating for KC910 Model

Green Building Category

Golda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Gold

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 93 105 12 — Not 

applicable

Chapter 6: Resource Efficiency 113 115 2 — Met

Chapter 7: Energy Efficiency 100 171 71 — Met

Chapter 8: Water Efficiency 41 52 11 — Met

Chapter 9: Indoor Environmental 

Quality 100 102 2 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 11 15 4 — Met

Section Total 458 560 102 0

Additional Points 100 — 102 0

Total Points 558 560 — 0

a Gold Required Points are the minimum green points needed to achieve a Gold Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Gold are the green points that exceed the Gold minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Gold minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.
25

The Gold Cost

The total initial cost to achieve the Gold-level rating is shown in Table 3-7.

Table 3-7. Initial Cost to the Builder for the Gold KC910 Model

Green Category Gold Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 105 2,754

Chapter 6: Resource Efficiency 115 1,118

Chapter 7: Energy Efficiency 171 9,713

Chapter 8: Water Efficiency 52 175

Chapter 9: Indoor Environmental Quality 102 298

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 560 $15,102

• The annual maintenance cost to achieve the Gold rating is $456 (Appendix A).

• The annual energy operating cost to achieve the Gold rating is $786 (Appendix A).

• The annual water operating cost to achieve the Gold rating is $536 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Gold rating is $30,157 (Appendix A).

The Gold Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 55-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 2—Baton Rouge, 

Louisiana). The annual water savings (compared with the Average Daily Per Capita Usage in 

Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) are approximately 

a 26.7-percent reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for 

Baton Rouge, Louisiana). The energy efficiency and homeowner education on green practices are 

at an Emerald rating. Nonetheless, the overall green rating is Gold because the total points are less 

than the Emerald minimum and most green categories are also less than the Emerald minimum.

The Emerald Rating

To achieve the Emerald rating, we improved the Gold-rated design by meeting the threshold 

chapter requirements and selecting an additional 103 points in green features. The Emerald rating 

requires 697 points; we achieved 700 points by implementing training in the areas of natural 

resource protection, stormwater management, and maintenance of vegetation in accordance with 

TCIA A300. To improve resource efficiency, we added detailed framing plans, roof overhangs, 

ENERGY STAR cool roof construction, and use of certified wood based materials (that is, AFF, 

FSC, and so on). To improve the energy efficiency, the cooling and heating systems were further 

upgraded and the air handling unit was relocated to the conditioned space. The water efficiency 

was improved by installing a rainwater collection and distribution system. The IEQ was improved 

by specifying the use of all hardwood surfaces and wall coverings that comply with CDPH 01350. 

In addition, a whole building ventilation system was added including ENERGY STAR exhaust 

CHAPTER 3
26 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

fans, humidity control, and kitchen exhaust (with make-up air). Additional green-scoring details 

are in Appendix B. Table 3-8 contains the Emerald rating summary.

Table 3-8. Emerald Rating for KC910 Model

Green Building Category

Emeralda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Emerald

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 119 138 19 Not 

Applicable

Chapter 6: Resource Efficiency 146 152 6 Met

Chapter 7: Energy Efficiency 120 181 61 Met

Chapter 8: Water Efficiency 60 60 — Met

Chapter 9: Indoor Environmental 

Quality 140 154 14 Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 12 15 3 Met

Section Total 597 700 103 0

Additional Points 100 — 103 0

Total Points 697 700 — 0

a Emerald Required Points are the minimum green points needed to achieve an Emerald Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Emerald are the green points that exceed the Emerald minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Emerald minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Emerald Cost

The total initial cost to achieve the Emerald-level rating is shown in Table 3-9.

Table 3-9. Initial Cost to the Builder for the Emerald KC910 Model

Green Category Emerald Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 138 7,145

Chapter 6: Resource Efficiency 152 7,372

Chapter 7: Energy Efficiency 181 13,072

Chapter 8: Water Efficiency 60 557

Chapter 9: Indoor Environmental Quality 154 5,232

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 700 $34,422

• The annual maintenance cost to achieve the Emerald rating is $456 (Appendix A).

• The annual energy operating cost to achieve the Emerald rating is $758 (Appendix A).

• The annual water operating cost to achieve the Emerald rating is $536 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Emerald rating is $35,515 (Appendix A).
27

The Emerald Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 61-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 2—Baton Rouge, 

Louisiana). In Appendix C, we also included an alternative energy model option that considers 

installing Solar PV, which increases the savings to 63 percent, but because 2006 IECC does not 

consider Solar PV in the formal energy reduction equation, we used the 61-percent energy model 

option (which is compliant with 2006 IECC method of calculating energy reductions). The annual 

water savings (compared with the Average Daily Per Capita Usage in Gallons, as defined by the 

Handbook of Water Use and Conservation—chapter 8) are approximately a 26.7-percent reduction in 

water usage (Appendix A—Indoor Water Usage Calculation Table for Baton Rouge, Louisiana). The 

water usage reduction estimate does not include the water that would be reduced by using the 

rainwater collection system (instead of municipal water sources).

Overall cost and performance data are provided in Table 3-10. The water utility rates are based on 

Baton Rouge, Louisiana water-supply meter rates and a flat sewer rate (source: Louisiana Public 

Service Commission). We base the simple payback periods for energy and water efficiency on the 

current cost estimates and projected savings and do not consider future rate increases, inflation, 

replacement costs, or other conditions over the 30-year evaluation period.

CHAPTER 3
28 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-10. Overall Cost and Performance Data for KC910 Model

LRAa

KC910

910 ft2

Baseline Bronze Silver Gold Emerald

Cost Comparison

Total Initial Green Cost ($) Unknown 2,794 7,877 15,102 34,515

Annual Maintenance Cost ($) 409 409 409 456 456

Annual Energy Operating Cost ($) 1,052 1,022 909 786 758

Annual Water Usage Cost ($) 578 570 570 536 536

30-Year Lifetime Replacement Cost ($) 18,412 18,412 19,772 30,157 35,515

Incremental Performance Improvement

Energy Efficiency (e-Ratio)

(compare to 2006 IECC) 0.91 0.85 0.69 0.45 0.39

Water Efficiency (%)

(compares to 56.4 gpda) 14.3 16.4 16.4 26.7 26.7

Land and Lot Use (points)

(NGBS Rating)

26

NR

51

Bronze

68

Silver

105

Gold

138

Emerald

Resource Efficiency (points)

(NGBS Rating)

52

Bronze

78

Bronze

89

Silver

115

Gold

152

Emerald

IEQ (points)

(NGBS Rating)

43

Bronze

53

Bronze

86

Silver

102

Gold

154

Emerald

Green Education for Owner (points)

(NGBS Rating)

0

NR

9

Bronze

15

Emerald

15

Emerald

15

Emerald

Simple Payback Periods

Energy Efficiency (years)

(initial energy cost and savings) NA 33 35 37 44

Water Efficiency (years)

(initial water cost and savings) NA 0 0 2 6

a The benchmark for comparison assumes four occupants using 56.4 gpd each. The benchmark cost is $626; all projected savings are compared 

with this benchmark.

IEQ = Indoor Environmental Quality; NA = not applicable; NGBS = National Green Building Standard; NR = not required.

3.1.2 Alabama Disaster Relief Housing

In Alabama, several single-family modular housing designs were developed and built as part of the 

recovery effort. Palm Harbor Homes built the modular houses in a production facility in Plant City, 

Florida, and then transported them to Alabama. We selected the AMT2356A Model (a single-family, 

two-bedroom and two-bathroom, one-story house) in Bayou La Batre, Alabama, to demonstrate the 

NGBS evaluation process. This house was not designed with the intent of being green.
29

AMT2356A Baseline Green Rating

Several green features are included in the original AMT2356A design; in fact, the baseline 

green rating exceeds the minimum threshold points for a Bronze rating in the areas of resource 

efficiency, energy efficiency, and indoor environmental quality. In addition, most mandatory 

green practices and requirements were implemented. The lot design and development 

specifications fall short of the Bronze minimum by 18 points and the water-efficiency 

specifications fall short of the Bronze minimum by 9 points. Owner-education documentation for 

green practices does not exist, because the house was not originally designed in accordance with a 

green program.

The AMT2356A design was built in accordance with 2006 IRC. Green points were achieved for 

building in a development that avoided environmentally sensitive areas, while incorporating 

soil disturbance and erosion measures (that is, Safe Harbor Estates and Landing). The resourceefficient green features include a small air-conditioned space (that is, 960 ft2; disaster-relief 

housing alternatives tend to be small houses) and the use of optimal material sizes, prefabricated 

components, moisture-prevention practices, and renewable materials. The energy-efficient green 

features include an ENERGY STAR home rating, the use of ENERGY STAR appliances (that is, 

dishwasher), HVAC cooling efficiency and heat pump heating efficiency, and ductwork design 

features. The water-efficient green features include using appliances that conserve water (that 

is, dishwasher) and minimizing the hot-water pipe runs. The IEQ green features include using 

cabinets that are KCMA ESP 01 compliant, using non-VOC paints and hard-surface flooring in 

accordance with CDPH 01350, sealing the living space to prevent contaminants, not having an 

attached garage or using combustion appliances, installing a carbon monoxide detector and 

ENERGY STAR-rated kitchen and bathroom exhaust fans, and incorporating several moisturemanagement practices, including insulating plumbing and ductwork in unconditioned areas.

Although the original AMT2356A design falls short of the Bronze rating, the unit has several 

green features that put it well within reach of receiving a Bronze rating (that is, achieving a total 

of 203 points). Table 3-11 summarizes the baseline rating and identifies where the design needs 

additional green features. Additional green-scoring details are in Appendix B.

CHAPTER 3
30 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-11. Baseline Rating for AMT2356A Model

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 21 — 18 Not

Applicable

Chapter 6: Resource Efficiency 45 56 11 — Met

Chapter 7: Energy Efficiency 30 49 19 — Met

Chapter 8: Water Efficiency 14 5 — 9 Met

Chapter 9: Indoor Environmental 

Quality 36 71 35 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 1 — 7 Not Met

Section Total 172 203 65 34

Additional Points 50 — 65 —

Total Points 222 203 — 34

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the AMT2356A Original Design.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

• The annual maintenance cost to achieve the base rating is $399 (Appendix A).

• The annual energy operating cost to achieve the base rating is $904 (Appendix A).

• The annual water operating cost to achieve the base rating is $538 (Appendix A).

• The 30-year lifetime replacement cost to achieve the base rating is $16,017 (Appendix A).

AMT2356A Incremental Green Ratings

The Bronze Rating

To achieve the Bronze rating, a few remaining mandatory green requirements were met. Some 

of these requirements were implemented by 2006 IRC and were not explicitly documented in the 

designs and specifications. All chapter thresholds were achieved, including an additional 109 

points. The Bronze rating requires only 222 points, but we were able to achieve 281 points simply 

by implementing green practices that added little or no cost to the project (for example, scheduling 

construction to minimize length of time soil is exposed, placement of utilities, and onsite 

supervision of green practices), implementing an ongoing maintenance plan in accordance with 

TCIA A300, using advanced framing techniques, specifying green materials that have comparable 

cost to the originally specified materials (indigenous materials, biobased materials, cabinets in 

accordance with GGPS.EC.010.R0), and selecting water-efficient fixtures that have comparable cost 

to the originally specified fixtures. 
31

The largest one-time cost of going green is the initial investment in developing green documentation 

and the homeowner’s binder templates. For this study, we estimated the going-green cost at $5,64021

(this cost will be the case for any rated level). Nonetheless, other green practices required additional 

costs, including a maintenance plan for vegetation, energy modeling and third-party verification, 

mandatory caulking and sealing, and educational materials for the owner. Additional green-scoring 

details are in Appendix B. Table 3-12 contains the Bronze rating summary.

Table 3-12. Bronze Rating for AMT2356A Model

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 53 14 —

Not 

Applicable

Chapter 6: Resource Efficiency 45 76 31 — Met

Chapter 7: Energy Efficiency 30 55 25 — Met

Chapter 8: Water Efficiency 14 14 — — Met

Chapter 9: Indoor Environmental 

Quality 36 74 38 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 9 1 — Met

Section Total 172 281 109 0

Additional Points 50 — 109 0

Total Points 222 281 — 0

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Bronze Cost

The total initial cost to achieve the Bronze-level rating is shown in Table 3-13.

Table 3-13. Initial Cost to the Builder for the Bronze AMT2356A Model

Green Category Bronze Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 53 417

Chapter 6: Resource Efficiency 76 0

Chapter 7: Energy Efficiency 55 1,095

Chapter 8: Water Efficiency 14 114

Chapter 9: Indoor Environmental Quality 74 0

Chapter 10: Operation, Maintenance, and Building Owner Education 9 950

Total 281 $2,576

CHAPTER 3
32 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

• The annual maintenance cost to achieve the Bronze rating is $399 (Appendix A).

• The annual energy operating cost to achieve the Bronze rating is $837 (Appendix A).

• The annual water operating cost to achieve the Bronze rating is $479 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Bronze rating is $16,105 (Appendix A).

The Bronze Benefits

The annual energy saving (compared with 2006 IECC—chapter 7) is approximately 15 percent. 

(Appendix C—Summary Data for Climate Zone 2 Bayou La Batre, Alabama). The annual water 

savings (compared with the Average Daily Per Capita Usage in Gallons, as defined by the Handbook 

of Water Use and Conservation—chapter 8) are approximately a 12.5-percent reduction in water usage 

(Appendix A—Indoor Water Usage Calculation Table for Bayou La Batre, Alabama). The indoor 

environmental quality is actually a low-level Silver rating, and the resource efficiency is very close 

to a Silver rating. Nonetheless, the overall green rating is Bronze because the total points are less 

than the Silver minimum and most green categories are also less than the Silver minimum.

The Silver Rating

To achieve the Silver rating, we improved the Bronze-rated design by meeting the threshold 

chapter requirements and selecting an additional 104 points in green features. The Silver rating 

requires 406 points; we achieved 410 points by restoring or preserving trees and vegetation and an 

integrated pest management plan. To improve resource efficiency, additional recycled materials 

are specified. To improve the energy efficiency, we improved the building enclosure insulation, 

heating and cooling equipment efficiencies, and water heater. The water efficiency was improved 

largely by green points associated with the landscape plan and no irrigation usage (the associated 

cost with this improvement was already captured in the lot design and development category). 

The IEQ was improved by specifying the use of low-VOC sealants, adhesives, insulation, and 

MERV 8 filters (which are priced similarly to originally specified products). The homeowner’s 

manual will include additional details. Additional green-scoring details are in Appendix B. Table 

3-14 contains the Silver rating summary.
33

Table 3-14. Silver Rating for AMT2356A Model

Green Building Category

Silvera

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Silver

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 66 72 6 — Not 

Applicable

Chapter 6: Resource Efficiency 79 87 8 — Met

Chapter 7: Energy Efficiency 60 100 40 — Met

Chapter 8: Water Efficiency 26 37 11 — Met

Chapter 9: Indoor Environmental 

Quality 65 99 34 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 10 15 5 — Met

Section Total 306 410 104 0

Additional Points 100 — 104 0

Total Points 406 410 — 0

a Silver Required Points are the minimum green points needed to achieve a Silver Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Silver are the green points that exceed the Silver minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Silver minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Silver Cost

The total initial cost to achieve the Silver-level rating is shown in Table 3-15.

Table 3-15. Initial Cost to the Builder for the Silver AMT2356A Model

Green Category Silver Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 72 1,103

Chapter 6: Resource Efficiency 87 0

Chapter 7: Energy Efficiency 100 3,990

Chapter 8: Water Efficiency 37 461

Chapter 9: Indoor Environmental Quality 99 207

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 410 $6,805

• The annual maintenance cost to achieve the Silver rating is $399 (Appendix A).

• The annual energy operating cost to achieve the Silver rating is $767 (Appendix A).

• The annual water operating cost to achieve the Silver rating is $441 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Silver rating is $19,047 (Appendix A).

CHAPTER 3
34 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The Silver Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 30-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 2—Bayou La Batre, 

Alabama). The annual water savings (compared with the Average Daily Per Capita Usage in 

Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) are approximately 

a 20.1-percent reduction in water usage (Appendix A—Indoor Water Usage Calculation Table 

for Bayou La Batre, Alabama). The energy efficiency is actually a Gold rating, and the indoor 

environmental quality is very close to a Gold rating. The homeowner education on green practices 

is at an Emerald rating. Nonetheless, the overall green rating is Silver because the total points are 

less than the Gold minimum and most green categories are also less than the Gold minimum.

The Gold Rating

To achieve the Gold rating, we improved the Silver-rated design by meeting the threshold 

chapter requirements and selecting an additional 107 points in green features. The Gold rating 

requires 558 points; we achieved 565 points by implementing additional wildlife support plans, 

hydrozoning, and landscaping for shade. To improve resource efficiency, we specified certified 

wood components, indigenous materials, and specified advanced recycling methods (such as 

composting on site). To improve the energy efficiency, we upgraded the water heater to a solar 

water heater. To improve water efficiency, dual flush toilets are specified. The IEQ was improved 

by specifying higher performance exhaust fans (in kitchen, bathroom, and laundry area). 

Additional green-scoring details are in Appendix B. Table 3-16 contains the Gold rating summary.

Table 3-16. Gold Rating for AMT2356A Model

Green Building Category

Golda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Gold

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 93 94 1 — Not 

Applicable

Chapter 6: Resource Efficiency 113 114 1 — Met

Chapter 7: Energy Efficiency 100 152 52 — Met

Chapter 8: Water Efficiency 41 55 14 — Met

Chapter 9: Indoor Environmental 

Quality 100 135 35 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 11 15 4 — Met

Section Total 458 565 107 0

Additional Points 100 — 107 0

Total Points 558 565 — 0

a Gold Required Points are the minimum green points needed to achieve a Gold Rating

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements

c Additional Claimed Points Above Gold are the green points that exceed the Gold minimum for each green category

d Point Shortfalls are the number of green points needed to meet the Gold minimum for each green category

e Mandatory Status identifies whether mandatory requirements were met for each green category
35

The Gold Cost

The total initial cost to achieve the Gold-level rating is shown in Table 3-17.

Table 3-17. Initial Cost to the Builder for the Gold AMT2356A Model

Green Category Gold Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 94 2,173

Chapter 6: Resource Efficiency 114 1,337

Chapter 7: Energy Efficiency 152 8,615

Chapter 8: Water Efficiency 55 811

Chapter 9: Indoor Environmental Quality 135 856

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 565 $14,836

• The annual maintenance cost to achieve the Gold rating is $493 (Appendix A).

• The annual energy operating cost to achieve the Gold rating is $684 (Appendix A).

• The annual water operating cost to achieve the Gold rating is $409 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Gold rating is $28,146 (Appendix A).

The Gold Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 51-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 2—Bayou La Batre, 

Alabama). The annual water savings (compared with the Average Daily Per Capita Usage in 

Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) are approximately 

a 26.7-percent reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for 

Bayou La Batre, Alabama). The energy efficiency and homeowner education on green practices 

is at an Emerald rating, and the indoor environmental quality is close to an Emerald rating. 

Nonetheless, the overall green rating is Gold because the total points are less than the Emerald 

minimum and most green categories are also less than the Emerald minimum.

The Emerald Rating

To achieve the Emerald rating, we improved the Gold-rated design by meeting the threshold chapter 

requirements and selecting an additional 103 points in green features. The Emerald rating requires 

697 points; we achieved 700 points by implementing training in the areas of natural resource 

protection and stormwater management. To improve resource efficiency, we added detailed framing 

plans, gutter and downspout system, ENERGY STAR cool roof construction, and flashing details. 

To improve the energy efficiency, the cooling and heating systems were further upgraded and the 

air handling unit was relocated to the conditioned space. The water efficiency was improved by 

installing a rainwater collection and distribution system. The IEQ was improved by specifying the 

use of all hardwood surfaces and wall coverings that comply with CDPH 01350. Additional greenscoring details are in Appendix B. Table 3-18 contains the Emerald rating summary.

CHAPTER 3
36 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-18. Emerald Rating for AMT2356A Model

Green Building Category

Emeralda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Emerald

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 119 121 2 Not 

Applicable

Chapter 6: Resource Efficiency 146 154 8 Met

Chapter 7: Energy Efficiency 120 181 61 Met

Chapter 8: Water Efficiency 60 72 12 Met

Chapter 9: Indoor Environmental 

Quality 140 157 17 Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 12 15 3 Met

Section Total 597 700 103 0

Additional Points 100 — 103 0

Total Points 697 700 — 0

a Emerald Required Points are the minimum green points needed to achieve an Emerald Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Emerald are the green points that exceed the Emerald minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Emerald minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Emerald Cost

The total initial cost to achieve the Emerald-level rating is shown in Table 3-19.

Table 3-19. Initial Cost to the Builder for the Emerald AMT2356A Model

Green Category Emerald Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 121 5,643

Chapter 6: Resource Efficiency 154 5,675

Chapter 7: Energy Efficiency 181 12,858

Chapter 8: Water Efficiency 72 1,345

Chapter 9: Indoor Environmental Quality 157 2,687

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 700 $29,252

• The annual maintenance cost to achieve the Emerald rating is $493 (Appendix A).

• The annual energy operating cost to achieve the base rating is $642 (Appendix A).

• The annual water operating cost to achieve the base rating is $388 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Emerald rating is $34,001 (Appendix A).
37

The Emerald Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 61-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 2—Bayou La Batre, 

Alabama). The annual water savings (compared with the Average Daily Per Capita Usage in 

Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) are approximately 

a 30.9-percent reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for 

Bayou La Batre, Alabama). The water-usage reduction estimate does not include the water that 

would be reduced by using the rainwater-collection system (instead of municipal water sources).

Overall cost and performance data are provided in Table 3-20. The water utility rates are based 

on Mobile, Alabama water supply and sewer meter rates (source: Mobile Area Water & Sewer 

System). We base the simple payback periods for energy and water efficiency on the current cost 

estimates and projected savings and do not consider future rate increases, inflation, replacement 

costs, or other conditions over the 30-year evaluation period.

CHAPTER 3
38 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-20. Overall Cost and Performance Data for AMT2356A Model

City of Bayou La Batre

AMT2356A

967 ft2

Baseline Bronze Silver Gold Emerald

Cost Comparison

Total Initial Green

Cost ($) Unknown 2,576 6,805 14,836 29,252

Annual Maintenance Cost ($) 399 399 399 493 493

Annual Energy Operating Cost ($) 904 837 767 684 642

Annual Water Usage Cost ($) 538 479 441 409 388

30-Year Lifetime Replacement Cost ($) 16,017 16,105 19,047 28,146 34,001

Incremental Performance Improvement

Energy Efficiency (e-Ratio)

(compare to 2006 IECC) 0.92 0.84 0.71 0.49 0.39

Water Efficiency (%)

(compares to 56.4 gpda) 0.6 12.5 20.1 26.7 30.9

Land and Lot Use (points)

(NGBS Rating)

21

NR

53

Bronze

72

Silver

94

Gold

121

Emerald

Resource Efficiency (points)

(NGBS Rating)

56

Bronze

76

Bronze

87

Silver

114

Gold

154

Emerald

IEQ (points)

(NGBS Rating)

71

Silver

74

Silver

99

Silver

135

Gold

157

Emerald

Green Education for Owner (points)

(NGBS Rating)

1

NR

9

Bronze

15

Emerald

15

Emerald

15

Emerald

Simple Payback Periods

Energy Efficiency (years)

(initial energy cost and savings) NA 16 29 39 49

Water Efficiency (years)

(initial water cost and savings) NA 2 5 6 9

a The benchmark for comparison assumes three occupants using 56.4 (gpd) each. The benchmark cost is $540; all projected savings are compared 

with this benchmark.

IEQ = Indoor Environmental Quality; NA = not applicable; NGBS = National Green Building Standard; NR = not required
39

3.2 Climate Zone #3

Oakland, California, is located in climate zone 3C, a warm-marine climate with 435 cooling 

degree hours (CDH) and 2,880 heating degree days (HDD).

3.2.1Oakland, California: Tassafaronga Development

The Tassafaronga development has approximately 180 new residential units consisting of 

apartments and townhouses that were constructed in an existing development renovated with 

HOPE VI grant funding from HUD. This Brownfields Program redevelopment project, known 

as the Tassafaronga HOPE VI Revitalization Area, was to remediate a former U.S. governmentowned temporary housing complex, built to house war workers in 1945. The Tassafaronga 

housing site was redeveloped into a mixed-income housing development, which included new 

streets and associated infrastructure, and implemented low-impact and sustainable design.

The new townhomes and apartments were built to LEED standards through a partnership 

with the Oakland Housing Authority. The LEED-rated townhomes in the Tassafaronga Village 

community incorporate green building and energy efficient practices into the site development 

and housing design. The newly constructed homes were designed, built, and certified to ENERGY 

STAR and LEED homes criteria.

We selected a two-story duplex townhouse in the Tassafaronga Village development of Oakland 

for the NGBS evaluation process. This townhouse is ENERGY STAR compliant and was designed 

to LEED homes criteria with the intent of being a green residential house.

Two-Story Townhouse Baseline Green Rating

Many green features are included in the original two-story townhouse design. In fact, the baseline 

green rating exceeds the minimum threshold points for a Bronze rating in all areas, except for the 

Operation, Maintenance and Building Owner Education category, where no points were achieved 

(because the necessary owner’s documentation does not exist). Also, Water Efficiency was the only 

section that met the mandatory green practices requirements.

The two-story townhouse design was built in accordance with the 2007 California Building Codes 

and LEED homes criteria. Green points were achieved for building on a brownfield site that was 

previously developed, incorporating mixed use development, and the lot provides for, and is 

close to, pedestrian access to community resources and mass transportation. A knowledgeable 

team was established with respect to green lot design, preparation, and development; a plan 

was formulated to restore or enhance natural vegetation that was cleared during construction; 

environmentally sensitive areas were avoided; turf grass species and other vegetation and 

trees were selected that were native or regionally appropriate; turf areas were limited; plants 

with similar watering needs were grouped; specific types of trees were located in areas to 

provide summer shading of streets, parking areas, and buildings; measures were planned that 

will support wildlife habitat; and ongoing maintenance of vegetation and tree pruning were 

conducted by a certified arborist.

CHAPTER 3
40 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Construction activities were scheduled to minimize exposed soils, a stormwater management plan 

was developed and implemented, sediment and erosion controls were installed and maintained in 

accordance with the stormwater pollution prevention plan (SWPPP), natural water and drainage 

features were preserved and used, a pest management plan was developed to minimize pesticides 

and fertilizer use, limits of clearing and grading were demarcated on the plan, and soil was 

improved with organic amendments. Points were also achieved for density (21 or greater dwelling 

units per acre), installing shared driveways and parking, and taking measures to mitigate the 

“Heat Island” effect (that is, patio paving is concrete with two overlapping trees for shading).

Resource-efficient green features include a conditioned space (above grade) of 1,105 ft2, and 

material use is minimized through optimal framing techniques (roof trusses at 24 in on center). 

The roof system is shipped as preassembled components; points are awarded for one stacked 

story above grade, and the rake and eave overhangs are 12 in. A construction waste-management 

plan was developed and implemented, onsite recycling measures followed applicable regulations 

and codes, and six types of construction materials (asphalt, concrete, wood, metals, shingles, and 

gypsum) were recycled. Points were also achieved for using resource-efficient engineered wood 

products (roof trusses).

For energy efficiency, the two-story townhouse is ENERGY STAR and LEED homes compliant and 

exceeds the minimum Emerald rating threshold when designed with the optional solar domestic 

water heater. Several mandatory NGBS items for energy efficiency, however, were not specified in 

the available design documentation.

We selected the townhouse design that includes the solar domestic water heater option because it 

provides the best energy-performance option within the Tassafaronga development. The Emeraldrated energy design exceeds the 2006 IECC performance requirements by reducing energy usage 

by 65 percent. Several energy-efficient systems are in use, including a 92-percent AFUE boiler 

for hydronic baseboard heating, a solar domestic water-heating system with an electric storage 

tank, and several ENERGY STAR-rated appliances. Additional points were gained for specifying 

ENERGY STAR hard-wired lighting fixtures, no recessed lighting, and a space-heating system 

that does not include air ducts.

The water-efficient green features include low-flow showerheads and faucets in all lavatories and a 

low-volume irrigation system that includes high-distribution (DU) rotating spray heads, bubblers, 

and subsurface irrigation.

The IEQ green features include no natural draftspace-heating or water-heating equipment 

is located in conditioned spaces, no garage is installed, no fireplace(s) or solid-fuel-burning 

appliances are installed, bathroom exhaust fan(s) are provided with automatic timer and 

humidistat, bathroom fan(s) are ENERGY STAR compliant and rated at or below 1 sone, and no 

plumbing is installed in unconditioned spaces.

Although the original two-story townhouse design obtained a total of 365 green points, the 

overall green rating falls short of achieving the Bronze-level rating because it lacks several 

mandatory practices. The design must implement all mandatory practices and meet the threshold 

requirements for all green categories to achieve a rating. Table 3-21 summarizes the baseline 

rating and identifies where the design exceeds Bronze-level rating thresholds. Additional greenscoring details are in Appendix B.
41

Table 3-21. Baseline Rating for Two-Story Townhouse

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 110 71 — Not

Applicable

Chapter 6: Resource Efficiency 45 49 4 — Not Met

Chapter 7: Energy Efficiency 30 145 115 — Not Met

Chapter 8: Water Efficiency 14 18 4 — Met

Chapter 9: Indoor Environmental 

Quality 36 43 7 — Not Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 — — 8 Not Met

Section Total 172 365 201 8

Additional Points 50 — 201 —

Total Points 222 365 — 8

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Two-Story Townhouse Original Design.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

• The annual maintenance cost to achieve the base rating is $323 (Appendix A).

• The annual energy operating cost to achieve the base rating is $748 (Appendix A).

• The annual water operating cost to achieve the base rating is $458 (Appendix A).

• The 30-year lifetime replacement cost to achieve the base rating is $13,508 (Appendix A).

CHAPTER 3
42 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Two-Story Townhouse Incremental Green Ratings

The Bronze Rating

To achieve the Bronze rating, the remaining mandatory green requirements were met for resource 

efficiency, energy efficiency and indoor environmental quality. In addition, a building owner’s 

manual is provided that includes a list of green building features and product manufacturers’ 

manuals or data sheets.

All chapter thresholds and mandatory items were achieved, including an additional 208 points. 

The Bronze rating requires only 222 points, but we were able to achieve 380 points simply by 

implementing the mandatory items not included in the baseline design, along with several green 

practices that added little or no cost to the project (for example, adding drip edges at eaves and 

gable roof edges, specifying the use of building materials without any visible mold, and never 

enclosing wet insulation products in wall cavities).

The largest one-time cost of going green is the initial investment in developing green 

documentation and the homeowner’s binder templates. For this study, we estimated the goinggreen cost at $5,64022 (this cost will be the case at any rated level). Some additional cost was 

incurred to meet the mandatory requirements and provide the building owner’s manual. 

Additional green-scoring details are in Appendix B. Table 3-22 contains the Bronze rating 

summary.

Table 3-22. Bronze Rating for Two-Story Townhouse

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 110 71 — Not 

Applicable

Chapter 6: Resource Efficiency 45 52 7 — Met

Chapter 7: Energy Efficiency 30 145 115 — Met

Chapter 8: Water Efficiency 14 18 4 — Met

Chapter 9: Indoor Environmental 

Quality 36 47 11 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 8 — — Met

Section Total 172 380 208 0

Additional Points 50 — 208 0

Total Points 222 380 — 0

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.
43

The Bronze Cost

The total initial cost to achieve the Bronze-level rating is shown in Table 3-23.

Table 3-23. Initial Cost to the Builder for the Bronze Two-Story Townhouse

Green Category Bronze Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 110 0

Chapter 6: Resource Efficiency 52 117

Chapter 7: Energy Efficiency 145 520

Chapter 8: Water Efficiency 18 0

Chapter 9: Indoor Environmental Quality 47 0

Chapter 10: Operation, Maintenance, and Building Owner Education 8 950

Total 380 $1,587

• The annual maintenance cost to achieve the Bronze rating is $323 (Appendix A).

• The annual energy operating cost to achieve the Bronze rating is $748 (Appendix A).

• The annual water operating cost to achieve the Bronze rating is $458 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Bronze rating is $13,508 (Appendix A).

The Bronze Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 65-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 3C, Oakland, 

California). The annual water savings (compared with the Average Daily Per Capita Usage in 

Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) are approximately 

a 12-percent reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for 

Oakland, California). The energy efficiency was originally designed at the Emerald level, and 

the lot design and development are at a Gold-level rating. Nonetheless, the overall green rating is 

Bronze because the total points are less than the Silver minimum in many green categories.

The Silver Rating

To achieve the Silver rating, we improved the Bronze-rated design by exceeding the threshold 

chapter requirements and selecting an additional 156 points in green features. The Silver 

rating requires 406 points. We achieved 462 points by changing the wall dimensions to reduce 

material cuts and waste, supplying precut or preassembled panels for the floor and wall systems, 

specifying vinyl windows, specifying a gutter and downspout system with extensions or splash 

blocks, and using biobased wood materials (cabinets, trim, and engineered wood). To improve 

energy and water efficiency, we added an ENERGY STAR dishwasher and washing machine 

(because the original specifications did not explicitly identify an ENERGY STAR dishwasher or 

washing machine). The IEQ was improved by specifying the use of low-VOC site-applied interior 

products that are in accordance with the emissions levels of the third-party programs outlined 

in section 901.8.2. Low-emission kitchen and bath cabinets were specified, along with installing 

CHAPTER 3
44 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

low-emission insulation in walls, floors, ceilings, and ducts. Kitchen exhaust units are ducted 

to the outdoors, and unwanted contaminants are prevented from entering the living space by 

sealing all penetrations in ceilings, walls, and floors, including the attic access. Green points were 

also awarded by providing training to building owners and occupants with regard to green 

building goals and strategies, and equipment and controls. Additional green-scoring details are in 

Appendix B. Table 3-24 contains the Silver rating summary.

Table 3-24. Silver Rating for Two-Story Townhouse

Green Building Category

Silvera

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Silver

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 66 110 44 — Not 

Applicable

Chapter 6: Resource Efficiency 79 80 1 — Met

Chapter 7: Energy Efficiency 60 151 91 — Met

Chapter 8: Water Efficiency 26 28 2 — Met

Chapter 9: Indoor Environmental 

Quality 65 79 14 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 10 14 4 — Met

Section Total 306 462 156 0

Additional Points 100 — 156 0

Total Points 406 462 — 0

a Silver Required Points are the minimum green points needed to achieve a Silver Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Silver are the green points that exceed the Silver minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Silver minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Silver Cost

The total initial cost to achieve the Silver-level rating (above the baseline) is shown in Table 3-25.

Table 3-25. Initial Cost to the Builder for the Silver Two-Story Townhouse

Green Category Silver Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 110 0

Chapter 6: Resource Efficiency 80 436

Chapter 7: Energy Efficiency 151 520

Chapter 8: Water Efficiency 28 200

Chapter 9: Indoor Environmental Quality 79 250

Chapter 10: Operation, Maintenance, and Building Owner Education 14 1,044

Total 462 2,450
45

• The annual maintenance cost to achieve the Silver rating is $323 (Appendix A).

• The annual energy operating cost to achieve the Silver rating is $744 (Appendix A).

• The annual water operating cost to achieve the Silver rating is $405 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Silver rating is $15,008 (Appendix A).

The Silver Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) remains at approximately 

a 65-percent reduction in energy usage (Appendix C—Summary Data contains Climate Zone 

3C, Oakland, California). The annual water savings (compared with the Average Daily Per 

Capita Usage in Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) 

are approximately a 27-percent reduction in water usage (Appendix A—Indoor Water Usage 

Calculation Table for Oakland, California). The energy efficiency remains well above the Emerald 

level, and the lot design and development remain at a Gold-level rating, and the homeowner 

education on green practices is at an Emerald rating. Nonetheless, the overall green rating is Silver 

because the total points are less than the Gold minimum and many of the green categories are 

less than the Gold minimum.

The Gold Rating

To achieve the Gold rating, we improved the Silver-rated design by meeting the threshold chapter 

requirements and selecting an additional 109 points in green features. The Gold rating requires 558 

points; we achieved 567 points by providing onsite supervision and coordination during clearing, 

grading, trenching, paving, and installation of utilities. For improved resource efficiency, we added 

flashing details to the plans, installed a recycling collection space in the kitchen and containers 

on the back porch, specified the use of gypsum board and cellulose insulation with 75-percent 

recycled content, procured OSB from a factory where one-third of the process energy comes from 

renewable resources, specified the use of OSB for floor decking and roof sheathing, and used five 

indigenous construction materials or products (stone, OSB, deck lumber, windows, and siding).

To improve water efficiency, low-flow toilets with an effective flush rate volume of 1.28 gallons 

or less were installed in all lavatories. Green points for IEQ were achieved by conditioning the 

mechanical room with an added radiator; specifying the use of low-emission carpet, padding, and 

carpet adhesives; verifying the airflow of all exhaust equipment at the point of exhaust; sampling 

the moisture content of framing lumber before closing-in wall cavities; checking the moisture 

content of subfloors, substrates, and concrete slabs before applying finish products; and not 

installing plumbing distribution lines in exterior wall cavities. Green points were also gained for 

placing fixed exterior grilles or mats by the entranceways. Additional green-scoring details are in 

Appendix B. Table 3-26 contains the Gold rating summary.

CHAPTER 3
46 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-26. Gold Rating for Two-Story Townhouse

Green Building Category

Golda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Gold

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 93 114 21 — Not 

Applicable

Chapter 6: Resource Efficiency 113 116 3 — Met

Chapter 7: Energy Efficiency 100 159 59 — Met

Chapter 8: Water Efficiency 41 46 5 — Met

Chapter 9: Indoor Environmental 

Quality 100 118 18 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 11 14 3 — Met

Section Total 458 567 109 0

Additional Points 100 — 109 0

Total Points 558 567 — 0

a Gold Required Points are the minimum green points needed to achieve a Gold Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Gold are the green points that exceed the Gold minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Gold minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Gold Cost

The total initial cost to achieve the Gold-level rating is shown in Table 3-27.

Table 3-27. Cost to the Builder for the Gold Two-Story Townhouse

Green Category Gold Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 114 0

Chapter 6: Resource Efficiency 116 1,014

Chapter 7: Energy Efficiency 159 520

Chapter 8: Water Efficiency 46 400

Chapter 9: Indoor Environmental Quality 118 592

Chapter 10: Operation, Maintenance, and Building Owner Education 14 1,044

Total 567 $3,570

• The annual maintenance cost to achieve the Gold rating is $323 (Appendix A).

• The annual energy operating cost to achieve the Gold rating is $744 (Appendix A).

• The annual water operating cost to achieve the Gold rating is $405 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Gold rating is $15,008 (Appendix A).
47

The Gold Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) remained at approximately 

a 65-percent reduction in energy usage (Appendix C—Summary Data for Climate Zone 3C, 

Oakland, California). The annual water savings (compared with the Average Daily Per Capita 

Usage in Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) remains 

at approximately a 27-percent reduction in water usage (Appendix A—Indoor Water Usage 

Calculation Table for Oakland, California). The energy efficiency remains well above the Emerald 

level and the homeowner education on green practices is at an Emerald rating. Nonetheless, the 

overall green rating is Gold, because the total points are less than the Emerald minimum and 

most green categories are also less than the Emerald minimum.

The Emerald Rating

To achieve the Emerald rating, we improved the Gold-rated design by meeting the threshold 

chapter requirements and selecting an additional 104 points in green features. Although the 

Emerald rating requires 697 points, we were able to achieve 701 points by providing basic 

training in tree or other natural resource protection to the onsite supervisor, creating vegetative 

wind breaks appropriate for local conditions, using onsite tree trimmings or stump grindings to 

provide protective mulch during construction, recycling cleared trees, using fencing to protect 

trees and other vegetation, staking out limits of clearing and grading, creating no-disturbance 

zones to protect vegetation and other sensitive areas, stockpiling and stabilizing topsoil for future 

use, compacting soil, and avoiding trenching and significant changes in grade in critical root 

zones of tree-save areas. We also achieved points for stabilizing disturbed areas within 14 days, 

using methods recommended by the EPA or in the approved stormwater pollution prevention 

plan (SWPPP).

For improved resource efficiency, we added detailed framing plans with sheathing layouts and cut 

lists, designed roof dimensions and layout to reduce material cuts and waste, specified prefinished 

fiber cement siding, installed a portico at each exterior entrance to protect that section of the 

building from precipitation and solar radiation, installed a continuous physical termite barrier at 

the foundation, converted all walls and a deck to termite-resistant materials, provided a compost 

facility on site, specified two FSC-certified wood products (interior doors and kitchen cabinets), 

and procured another construction material from a factory that uses one-third of the process 

energy from a renewable resource. To improve energy efficiency, we specified an ENERGY STAR 

refrigerator and required that the HVAC contractor and service technician(s) be certified by a 

nationally or regionally recognized program, so that the installation and performance of the 

heating and cooling system were verified by the HVAC contractor.

Water efficiency was improved by specifying a washing machine with a water factor of 6.0 or 

less, having the irrigation system designed and installed by professionals in accordance with 

EPA WaterSense requirements or equivalent, zoning the irrigation system separately for turf and 

bedding areas; and collecting and using rainwater.

The IEQ was improved by specifying the use of low-emission particleboard and MDF cabinets 

and hardwood plywood trim, specifying low-emission hard-surface flooring that meets 

third-party certification requirements, specifying the use of interior low-VOC adhesives and 

sealants that meet third-party certification requirement, and requiring more stringent emission 

CHAPTER 3
48 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

specifications for kitchen and bath cabinets. Additional green points were also achieved for 

installing a heat-recovery ventilator, protecting HVAC supply registers and return grilles by 

covering the openings during construction to prevent dust and other pollutants from entering 

the system, adding a capillary break on the footing to prevent moisture migration into the 

foundation wall, and installing a humidity-monitoring system with a mobile base unit that 

displays temperature and humidity. Additional green-scoring details are in Appendix B. Table 

3-28 contains the Emerald rating summary.

Table 3-28. Emerald Rating for Two-Story Townhouse

Green Building Category

Emeralda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Emerald

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 119 150 31 Not 

Applicable

Chapter 6: Resource Efficiency 146 150 4 Met

Chapter 7: Energy Efficiency 120 168 48 Met

Chapter 8: Water Efficiency 60 61 1 Met

Chapter 9: Indoor Environmental 

Quality 140 158 18 Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 12 14 2 Met

Section Total 597 701 104 0

Additional Points 100 — 104 0

Total Points 697 701 — 0

a Emerald Required Points are the minimum green points needed to achieve an Emerald Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Emerald are the green points that exceed the Emerald minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Emerald minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.
49

The Emerald Cost

The total initial cost to achieve the Emerald-level rating (above the baseline) is shown in Table 3-29.

Table 3-29. Initial Cost to the Builder for the Emerald Two-Story Townhouse

Green Category Emerald Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 150 1,670

Chapter 6: Resource Efficiency 150 7,619

Chapter 7: Energy Efficiency 168 594

Chapter 8: Water Efficiency 61 891

Chapter 9: Indoor Environmental Quality 158 1,439

Chapter 10: Operation, Maintenance, and Building Owner Education 14 1,044

Total 701 $13,257

• The annual maintenance cost to achieve the Emerald rating is $323 (Appendix A).

• The annual energy operating cost to achieve the Emerald rating is $719 (Appendix A).

• The annual water operating cost to achieve the Emerald rating is $390 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Emerald rating is $15,931 (Appendix A).

The Emerald Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) remained at approximately 

a 65-percent reduction in energy usage (Appendix C—Summary Data for Climate Zone 3C, 

Oakland, California). The annual water savings (compared with the Average Daily Per Capita 

Usage in Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) are 

approximately a 31-percent reduction in water usage (Appendix A—Indoor Water Usage 

Calculation Table for Oakland, California). The water usage reduction estimate does not include 

the water that would be reduced from using the rainwater-collection system (instead of municipal 

water sources).

Overall cost and performance data are provided in Table 3-30. The water utility rates are based 

on Oakland, California water supply and sewer meter rates (source: East Bay Municipal Utility 

District). We base the simple payback periods for energy and water efficiency on the current cost 

estimates and projected savings and do not consider future rate increases, inflation, replacement 

costs, or other conditions over the 30-year evaluation period.

CHAPTER 3
50 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-30. Overall Cost and Performance Data for Two-Story Townhouse

OHA

Townhouse

1,105 ft2

Baseline Bronze Silver Gold Emerald

Cost Comparison

Total Initial Green Cost ($) Unknown 1,587 2,450 3,570 13,257

Annual Maintenance Cost ($) 323 323 323 323 323

Annual Energy Operating Cost ($) 748 748 744 744 719

Annual Water Usage Cost ($) 458 458 405 405 390

30-Year Lifetime Replacement Cost ($) 13,508 13,508 15,008 15,008 15,931

Incremental Performance Improvement

Energy Efficiency (e-Ratio)

(compare to 2006 IECC) 0.36 0.36 0.36 0.36 0.36

Water Efficiency (%)

(compares to 56.4 gpda) 11.9 11.9 26.7 26.7 30.9

Land and Lot Use (points)

(NGBS Rating)

110

Gold

110

Gold

110

Gold

114

Gold

150

Emerald

Resource Efficiency (points)

(NGBS Rating)

49

Bronze

52

Bronze

80

Silver

116

Gold

150

Emerald

IEQ (points)

(NGBS Rating)

43

Bronze

47

Bronze

79

Silver

118

Gold

158

Emerald

Green Education for Owner (points)

(NGBS Rating)

0

NR

8

Bronze

14

Emerald

14

Emerald

14

Emerald

Simple Payback Periods

Energy Efficiency (years)

(initial energy cost and savings) NA 0 0 0 0

Water Efficiency (years)

(initial water cost and savings) NA 0 2 4 8

a The benchmark for comparison assumes three occupants using 56.4 (gpd) each. The benchmark cost is $501; all projected savings are compared 

with this benchmark.

IEQ = Indoor Environmental Quality; NA = not applicable; NGBS = National Green Building Standard; NR = not required
51

3.3 Climate Zone #4

Richmond, Virginia, is located in climate zone 4A, a mixed-humid climate with 12,260 cooling 

degree hours (CDH) and 3,969 HDD. Seattle, Washington, is located in climate zone 4C, a mixedmarine climate with 1,050 CDH and 5,122 HDD.

3.3.1 Richmond, Virginia: Blackwell Development

In Virginia, approximately 470 new units consisting of townhouse and garden style apartments, 

and single-family homes were constructed in several existing neighborhoods renovated with 

HOPE grant funding from the U.S. Department of Housing and Development. This urban 

revitalization project was to rebuild and improve former public housing developments located in 

the city of Richmond. Construction also included a recreation and community center, parks, and 

an elementary school.

Construction was managed by the Richmond Redevelopment and Housing Authority (RRHA) 

and was completed in different phases, and in several different neighborhoods. The largest 

amount of construction took place in the Blackwell community, with the construction of 188 

single-family houses. The Blackwell community incorporates green building and energy efficient 

practices into the housing designs, along with making the homes easily accessible to community 

services and amenities. The newly constructed homes were designed, built, and certified to 

ENERGY STAR and EarthCraft HouseTM criteria.

We selected a single-family 18 foot-wide rowhouse in the Blackwell community of Richmond, 

Virginia, for the NGBS evaluation process. This home was designed to be ENERGY STAR 

compliant and EarthCraftTM certified with the intent of being green.

Single-Family Rowhouse Baseline Green Rating

Many green features are included in the original single-family rowhouse design. In fact, the 

baseline green rating exceeds the minimum threshold points for a Bronze rating in all areas, 

except for water efficiency and Operation, Maintenance and Building Owner Education, 

where no points were achieved (because the necessary owner’s documentation does not exist). 

Although the minimum Bronze threshold was not met for water efficiency, the mandatory 

water-efficiency requirements were met. The mandatory green practice requirements were not 

met for other green categories.

The single-family rowhouse design was built in accordance with the 2006 Virginia Construction 

Code (USBC) and the City of Richmond Zoning Ordinance. Green points were achieved for 

building on a grayfield site that was previously developed. The lot provides for, and is close 

to, pedestrian access to community resources and transportation. Construction activities were 

scheduled to minimize exposed soils, and limits of clearing and grading are shown on the plans. 

Environmentally sensitive areas were avoided and cleared trees recycled. Measures were taken to 

minimize soil disturbance and erosion, and to protect trees and vegetation during construction. 

Light colored hardscaping was also installed.

CHAPTER 3
52 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Resource-efficient green features include a conditioned space (above grade) of 1,656 ft2, roof 

trusses and floor trusses at 24 in on center, 2 by 6 in walls at 24 in on center, and single top 

plates. The building dimensions and layouts were designed to reduce material cuts and waste. 

Prefabricated components were used for the roof system, and points were achieved for one 

stacked story. Windows, decking, and siding do not require onsite application of paint or stain. 

Exterior doors are covered to protect them from the rain and sun, drip edges are installed, and 

flashing details are implemented and shown on the plans. Sorting and reuse of scrap building 

materials are implemented, and biobased wood materials and resource-efficient engineered 

products are installed.

The single-family rowhouse was built to the 2006 IECC. The rowhouse exceeds the 2006 IECC 

performance requirements by reducing energy usage by 15 percent. All mandatory items under 

energy efficiency were met except for one. A 13 SEER Heat Pump was installed. Additional 

green features include upgraded windows and doors, upgraded insulation in the ceiling (R-38) 

and walls (R-19), 2 by 6 in wall construction, and 5-percent duct loss. The design includes an 

ENERGY STAR dishwasher, energy-efficient lighting (CFLs), programmable thermostat, and no 

recessed lighting. The duct system was designed in accordance with Manual D, all ducts were in 

conditioned space, no building cavities were used for ducts, and return ducts were in every room 

with a door. Also, a third-party inspection verified duct installation and sealing and envelope 

insulation and sealing.

The water-efficient green features included using appliances and fixtures that conserve water 

(that is, dishwasher and low-flow showerheads), and minimizing the hot-water pipe runs. The 

IEQ green features included an air handler in conditioned space, low-emission carpeting, and 

low-VOC interior architectural coatings and exterior adhesives and sealants. The rowhouse had 

no fireplace(s) or solid-fuel-burning appliances, and no garage. The kitchen exhaust fan was 

vented to the outdoors, the bath and laundry exhaust fans was wired to a humidistat, and all 

exhaust fans are ENERGY STAR rated. A whole building ventilation system was implemented, 

MERV 8 filters or better were installed, and indoor contaminants were prevented through 

sealing of the envelope. Green points were also gained under moisture management by correctly 

installing a vapor barrier on the crawlspace floor, and not installing plumbing in exterior walls or 

unconditioned space(s).

Although the original single-family rowhouse design obtained a total of 327 green points, the 

overall green rating falls short of achieving the Bronze-level rating because it lacks several 

mandatory practices. The design must implement all mandatory practices and meet the threshold 

requirements for all green categories to achieve a rating. Table 3-31 summarizes the baseline 

rating and identifies where the design exceeds Bronze-level rating thresholds. Additional greenscoring details are in Appendix B.
53

Table 3-31. Baseline Rating for Single-Family Rowhouse

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 68 29 — Not

Applicable

Chapter 6: Resource Efficiency 45 78 33 — Not met

Chapter 7: Energy Efficiency 30 70 40 — Not met

Chapter 8: Water Efficiency 14 8 — 6 Met

Chapter 9: Indoor Environmental 

Quality 36 103 67 — Not met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 — — 8 Not met

Section Total 172 327 169 14

Additional Points 50 — 169 —

Total Points 222 327 — 14

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Single-Family Rowhouse Original Design.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

• The annual maintenance cost to achieve the base rating is $273 (Appendix A).

• The annual energy operating cost to achieve the base rating is $1,150 (Appendix A).

• The annual water operating cost to achieve the base rating is $981 (Appendix A).

• The 30-year lifetime replacement cost to achieve the base rating is $11,010 (Appendix A).

Single-Family Rowhouse Incremental Green Ratings

The Bronze Rating

To achieve the Bronze rating, all remaining mandatory green requirements were met. These 

requirements included adding specifications to the plans to provide proper slope at finish grade, 

specifying that insulation was installed according to manufacturer’s specifications, verifying the 

moisture content of wall insulation before close-in, and including a list of green building features 

and product manufacturers’ manuals or data sheets.

All chapter thresholds and mandatory items were achieved, including an additional 178 points. 

The Bronze rating requires only 222 points, but we were able to achieve a total of 350 points 

simply by implementing the mandatory items not included in the baseline design, along with 

several green practices that added little or no cost to the project (for example, installing lower 

flow faucets and showerheads in all lavatories, installing a vapor retarder on the crawlspace floor 

and extending it up the foundation wall, and developing a manual to provide information on the 

building’s use, maintenance, and green components).

CHAPTER 3
54 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The largest one-time cost of going green is the initial investment in developing green 

documentation and the homeowner’s binder templates. For this study, we estimated the goinggreen cost at $5,64023 (this cost will be the case at any rated level). Some additional cost was 

incurred to meet the mandatory requirements and provide the building owner’s manual. 

Additional green-scoring details are in Appendix B. Table 3-32 contains the Bronze rating 

summary.

Table 3-32. Bronze Rating for Single-Family Rowhouse

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 68 29 — Not 

Applicable

Chapter 6: Resource Efficiency 45 78 33 — Met

Chapter 7: Energy Efficiency 30 70 40 — Met

Chapter 8: Water Efficiency 14 14 — — Met

Chapter 9: Indoor Environmental 

Quality 36 111 75 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 9 1 — Met

Section Total 172 350 178 0

Additional Points 50 — 178 0

Total Points 222 350 — 0

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Bronze Cost

The total initial cost to achieve the Bronze-level rating is shown in Table 3-33.

Table 3-33. Initial Cost to the Builder for the Bronze Single-Family Rowhouse

Green Category Bronze Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 68 0

Chapter 6: Resource Efficiency 78 0

Chapter 7: Energy Efficiency 70 0

Chapter 8: Water Efficiency 14 0

Chapter 9: Indoor Environmental Quality 111 0

Chapter 10: Operation, Maintenance, and Building Owner Education 9 950

Total 350 $950
55

• The annual maintenance cost to achieve the Bronze rating is $273 (Appendix A).

• The annual energy operating cost to achieve the Bronze rating is $1,140 (Appendix A).

• The annual water operating cost to achieve the Bronze rating is $936 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Bronze rating is $11,010 (Appendix A).

The Bronze Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 15-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 4, Richmond, Virginia). 

The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, as defined 

by the Handbook of Water Use and Conservation—chapter 8) are approximately a 12-percent reduction 

in water usage (Appendix A—Indoor Water Usage Calculation Table for Richmond, Virginia). The 

IEQ is actually at a Gold rating. The lot design and development and energy efficiency are at a Silver 

rating, and resource efficiency is within 1 point of a Silver rating. Nonetheless, the overall green 

rating is Bronze because the total points are less than the Silver minimum.

The Silver Rating

To achieve the Silver rating, we improved the Bronze-rated design by meeting the threshold 

chapter requirements and selecting an additional 130 points in green features. The Silver rating 

requires 406 points; we achieved 436 points by specifying precut floor trusses for both floors, and 

improving energy efficiency by increasing the attic insulation to R-49, installing one-inch exterior 

foam sheathing, improving window performance, upgrading the heat pump to 16 SEER, adding a 

communicating programmable thermostat, reducing infiltration further, and installing a tankless 

water heater. For improved water efficiency, we added low-flow toilets with flush rates of 1.28 

gallons or less in all bathrooms. The IEQ was improved by specifying the use of low-emission 

carpet padding and adhesives; installing low-emission kitchen and bath cabinets; installing lowemission insulation in walls, floors, ceilings, and ducts; sampling moisture content of lumber for 

acceptable levels; and installing exterior grilles or mats at door entrances. Training and orientation 

of the building owners for the green building systems and operations were implemented. 

Additional green-scoring details are in Appendix B. Table 334 contains the Silver rating summary.

Table 3-34. Silver Rating for Single-Family Rowhouse

Green Building Category

Silvera

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Silver

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 66 68 2 — Not 

Applicable

Chapter 6: Resource Efficiency 79 82 3 — Met

Chapter 7: Energy Efficiency 60 102 42 — Met

Chapter 8: Water Efficiency 26 38 12 — Met

Chapter 9: Indoor Environmental 

Quality 65 131 66 — Met

continued on next page

CHAPTER 3
56 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-34. Silver Rating for Single-Family Rowhouse (cont)

Green Building Category

Silvera

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Silver

Pointd

Shortfall

Mandatorye

Status

Chapter 10: Operation, Maintenance, 

and Building Owner Education 10 15 5 — Met

Section Total 306 436 130 0

Additional Points 100 — 130 0

Total Points 406 436 — 0

a Silver Required Points are the minimum green points needed to achieve a Silver Rating

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Silver are the green points that exceed the Silver minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Silver minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Silver Cost

The total initial cost to achieve the Silver-level rating is shown in Table 3-35.

Table 3-35. Initial Cost to the Builder for the Silver Single-Family Rowhouse

Green Category Silver Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 68 0

Chapter 6: Resource Efficiency 82 0

Chapter 7: Energy Efficiency 102 6,384

Chapter 8: Water Efficiency 38 525

Chapter 9: Indoor Environmental Quality 131 44

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 436 $7,997

• The annual maintenance cost to achieve the Silver rating is $273 (Appendix A).

• The annual energy operating cost to achieve the Silver rating is $1,043 (Appendix A).

• The annual water operating cost to achieve the Silver rating is $906 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Silver rating is $15,371 (Appendix A).

The Silver Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 30-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 4, Richmond, Virginia). 

The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, as 

defined by the Handbook of Water Use and Conservation—chapter 8) are approximately a 19-percent 

reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for Richmond, 

Virginia). The energy efficiency and IEQ categories have Gold ratings, and the lot design, 

preparation and development, the resource efficiency, and the operation, maintenance, building 
57

owner education categories are slightly above the Silver rating. The water-efficiency category is 

close to achieving a Gold rating. Nonetheless, the overall green rating is Silver because the total 

points are less than the Gold minimum.

The Gold Rating

To achieve the Gold rating, we improved the Silver-rated design by meeting the threshold chapter 

requirements and selecting an additional 113 points in green features. The Gold rating requires 

558 points; we achieved 571 points by implementing measures to support wildlife habitat and 

developing a landscape plan to restore or enhance natural vegetation that is cleared during 

construction and that limits water and energy use. We also specified a pest-management plan. To 

improve resource efficiency, we specified wall dimensions that reduce material cuts and waste, 

and we required panelized wall assemblies. We specified the use of gypsum board and cellulose 

insulation with 75-percent recycled content, three types of building materials that were recycled, 

and five indigenous construction materials.

To improve energy efficiency, we upgraded to a closed-loop solar hot-water system and all 

hard-wired lighting fixtures to an ENERGY STAR rating. We selected the heating and cooling 

equipment using ACCA Manual S, and ensured that the installation technician(s) were certified 

by a nationally recognized program. To improve water efficiency, we installed no irrigation 

system and we developed a landscape plan to conserve water. We improved the IEQ by selecting 

interior doors and trim with no added urea formaldehyde and by selecting kitchen cabinets and 

all interior wood materials that have very low emissions. Additional green-scoring details are in 

Appendix B. Table 3-36 contains the Gold rating summary.

Table 3-36. Gold Rating for Single-Family Rowhouse

Green Building Category

Golda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Gold

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 93 95 2 — Not 

Applicable

Chapter 6: Resource Efficiency 113 114 1 — Met

Chapter 7: Energy Efficiency 100 155 55 — Met

Chapter 8: Water Efficiency 41 53 12 — Met

Chapter 9: Indoor Environmental 

Quality 100 139 39 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 11 15 4 — Met

Section Total 458 571 113 0

Additional Points 100 — 113 0

Total Points 558 571 — 0

a

 Gold Required Points are the minimum green points needed to achieve a Gold Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c

 Additional Claimed Points Above Gold are the green points that exceed the Gold minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Gold minimum for each green category.

e

 Mandatory Status identifies whether mandatory requirements were met for each green category.

CHAPTER 3
58 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The Gold Cost

The total initial cost to achieve the Gold-level rating (above the baseline) is shown in Table 3-37.

Table 3-37. Initial Cost to the Builder for the Gold Single-Family Rowhouse

Green Category Gold Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 95 1,590

Chapter 6: Resource Efficiency 114 0

Chapter 7: Energy Efficiency 155 13,009

Chapter 8: Water Efficiency 53 525

Chapter 9: Indoor Environmental Quality 139 44

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 571 $16,212

• The annual maintenance cost to achieve the Gold rating is $320 (Appendix A).

• The annual energy operating cost to achieve the Gold rating is $910(Appendix A).

• The annual water operating cost to achieve the Gold rating is $906 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Gold rating is $25,756 (Appendix A).

The Gold Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 54-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 4, Richmond, Virginia). 

The annual water savings (compared with the average daily per capita usage in gallons, as 

defined by the Handbook of Water Use and Conservation—chapter 8) are approximately a 19-percent 

reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for Richmond, 

Virginia). Energy efficiency is at an Emerald rating, and IEQ is only 1 point from the Emerald 

rating. The lot design and development, resource efficiency, and building owner education are 

Gold rating, and water efficiency is close to an Emerald rating. Nonetheless, the overall green 

rating is Gold because the total points are less than the Emerald minimum.

The Emerald Rating

To achieve the Emerald rating, we improved the Gold-rated design by meeting the threshold 

chapter requirements and selecting an additional 102 points in green features. The Emerald 

rating requires 697 points; we achieved 699 points by requiring basic training in tree and natural 

resource protection to the onsite supervisor, specifying a stormwater management plan, limiting 

turf areas, and specifying trees and vegetation that are native or regionally appropriate for local 

growing conditions. Onsite supervision was also required during excavation, trenching, paving, 

and utility installation. To improve resource efficiency, we specified detailed framing plans, 

extended roof overhangs, added extensions to downspouts, added a recycling area in the kitchen, 

and installed a compost facility on site. A construction waste management plan is specified and 

must be implemented on site. Certified wood-based products were specified for doors, kitchen 
59

cabinets, and deck railings, and another construction material was selected from a factory that 

uses one-third of the process energy from a renewable resource. To improve energy efficiency, 

we specified R-60 insulation in the attic with raised heel trusses, R-10 foam sheathing to the 

exterior, and triple-pane windows. We installed an 18 SEER heat pump, improved the structure’s 

infiltration rate further, and balanced the HVAC system airflow. We also specified verification 

of the installation and performance of the heating and cooling system by a certified technician. 

The water efficiency was improved by installing a rainwater-collection and -distribution system. 

The IEQ was improved by verifying the ventilation airflow of all exhaust equipment; specifying 

the use of interior low-VOC adhesives and sealants certified by a third party; installing a central 

vacuum system; cleaning and vacuuming all HVAC supply registers, return grilles and duct 

terminations, and coils; and adding a capillary break on the footing to prevent moisture migration 

into the foundation wall. A humidity-monitoring system was also specified. Additional greenscoring details are in Appendix B. Table 3-38 contains the Emerald rating summary.

Table 3-38. Emerald Rating for Single-Family Rowhouse

Green Building Category

Emeralda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Emerald

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 119 122 3 Not 

Applicable

Chapter 6: Resource Efficiency 146 147 1 Met

Chapter 7: Energy Efficiency 120 189 69 Met

Chapter 8: Water Efficiency 60 61 1 Met

Chapter 9: Indoor Environmental 

Quality 140 165 25 Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 12 15 3 Met

Section Total 597 699 102 0

Additional Points 100 — 102 0

Total Points 697 699 — 0

a Emerald Required Points are the minimum green points needed to achieve an Emerald Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Emerald are the green points that exceed the Emerald minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Emerald minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

CHAPTER 3
60 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The Emerald Cost

The total initial cost to achieve the Emerald-level rating is shown in Table 3-39.

Table 3-39. Initial Cost to the Builder for the Emerald Single-Family Rowhouse

Green Category Emerald Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 122 6,256

Chapter 6: Resource Efficiency 147 3,728

Chapter 7: Energy Efficiency 189 19,528

Chapter 8: Water Efficiency 61 907

Chapter 9: Indoor Environmental Quality 165 1,840

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 699 $33,303

• The annual maintenance cost to achieve the Emerald rating is $320 (Appendix A).

• The annual energy operating cost to achieve the Emerald rating is $861(Appendix A).

• The annual water operating cost to achieve the Emerald rating is $906 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Emerald rating is $31,134 (Appendix A).

The Emerald Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 60-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 4, Richmond, Virginia). 

The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, as 

defined by the Handbook of Water Use and Conservation—chapter 8) are approximately a 19-percent 

reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for Richmond, 

Virginia). The water usage reduction estimate does not include the water that would be reduced 

from using the rainwater-collection system (instead of municipal water sources).

Overall cost and performance data are provided in Table 3-40. The water utility rates are based 

on Richmond, Virginia water supply and sewer meter rates (source: Richmond Public Utility). We 

base the simple payback periods for energy and water efficiency on the current cost estimates and 

projected savings and do not consider future rate increases, inflation, replacement costs, or other 

conditions over the 30-year evaluation period.
61

Table 3-40. Overall Cost and Performance Data for Single-Family Rowhouse

RRHA

Rowhouse

1,656 ft2

Baseline Bronze Silver Gold Emerald

Cost Comparison

Total Initial Green

Cost ($) Unknown 950 7,997 16,212 33,303

Annual Maintenance Cost ($) 273 273 273 320 320

Annual Energy Operating Cost ($) 1,142 1,142 1,043 910 861

Annual Water Usage Cost ($) 981 936 906 906 906

30-Year Lifetime Replacement Cost ($) 11,010 11,010 15,371 25,756 31,134

Incremental Performance Improvement

Energy Efficiency (e-Ratio)

(compare to 2006 IECC) 0.85 0.85 0.69 0.46 0.40

Water Efficiency (%)

(compares to 56.4 gpda) 2.6 12.5 19.0 19.0 19.0

Land and Lot Use (points)

(NGBS Rating)

68

Silver

68

Silver

68

Silver

95

Gold

122

Emerald

Resource Efficiency (points)

(NGBS Rating)

78

Bronze

78

Bronze

82

Silver

114

Gold

147

Emerald

IEQ (points)

(NGBS Rating)

103

Gold

111

Gold

131

Gold

139

Gold

165

Emerald

Green Education for Owner (points)

(NGBS Rating)

0

NR

9

Bronze

15

Emerald

15

Emerald

15

Emerald

Simple Payback Periods

Energy Efficiency (years)

(initial energy cost and savings) NA 0 60 54 68

Water Efficiency (years)

(initial water cost and savings) NA 0 6 6 11

a The benchmark for comparison assumes four occupants using 56.4 (gpd) each. The benchmark cost is $992; all projected savings are compared 

with this benchmark.

IEQ = Indoor Environmental Quality; NA = not applicable; NGBS = National Green Building Standard; NR = not required

CHAPTER 3
62 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

3.3.2Seattle, Washington: High Point Development

In Seattle, approximately 60 new Breathe Easy homes consisting of duplex and stacked unit 

designs were constructed in an existing neighborhood renovated with HOPE grant funding 

from the U.S. Department of Housing and Development. This urban revitalization project was 

to rebuild 700 worn-out units of a public housing project in the High Point community of West 

Seattle. Construction also included improvements to roads and infrastructure, implementing lowimpact and sustainable design practices.

The Breathe Easy homes were built through a partnership between the Seattle Housing Authority 

and Neighborhood House. The Breathe Easy houses in the High Point community incorporate 

green building and energy efficient practices into its housing designs, along with features that 

improve indoor air quality. The newly constructed homes were designed, built, and certified to 

ENERGY STAR and Breathe Easy homes criteria.

We selected a two-story stacked multiunit structure in the High Point development for the NGBS 

evaluation process. This multiunit structure is ENERGY STAR compliant and was designed to 

Breathe Easy homes criteria with the intent of being green.

Two-Story Stacked Multiunit Baseline Green Rating

Many green features are included in the original two-story stacked multiunit design. In fact, 

the baseline green rating exceeds the minimum threshold points for a Bronze rating in all areas, 

except for water efficiency and the building owner education requirements. In addition, all 

mandatory green practices were specified (except the green operation and maintenance manual).

The two-story stacked multiunit design was built in accordance with the 2003 Seattle Building 

Codes and Breathe Easy homes criteria. Green points were achieved for building on a grayfield 

site that had been developed previously. The lot provided for, and was close to, pedestrian access 

to community resources and mass transportation. A natural resources inventory was completed 

by a qualified professional, a plan was implemented to conserve high-priority natural resources, 

ongoing maintenance of vegetation and tree pruning was conducted by a certified arborist, and 

basic training in tree and other natural resource protection was provided to the onsite supervisor.

Construction activities were scheduled to minimize exposed soils; a stormwater management 

plan was developed and implemented; impervious surfaces were minimized; onsite tree 

trimmings or stump grindings were used to provide protective mulch; a pest management plan 

was developed to minimize pesticides and fertilizer use; measures were taken to protect trees, 

tree roots, and vegetation during construction; limits of clearing and grading were staked out; and 

topsoil was stockpiled for later use. Disturbed areas that were to be left unworked were stabilized, 

and soil was improved with organic amendments. Green points were also achieved for density (14 

to less than 21 dwelling units per acre) and the use of shared driveways and parking.

Resource-efficient green features included a conditioned space (above grade) of 946 ft2

, and 

minimizing material use through optimal framing techniques (roof trusses and wall studs at 

24 in on center and 2 stud corners). Building dimensions were designed to reduce material cuts 

(floors), the floor and roof system were shipped as precuts or panels, and points were awarded 

for one stacked story above grade. Vinyl windows did not require application of paint or stain, 
63

exterior entries were covered to protect them from the rain and sun, 12 in rake and 16 in eave 

overhangs were specified, drip edges were installed, a gutter and downspout system with 

extensions was installed, and flashing details were implemented and shown on the plans. Sorting 

and reuse of scrap building materials were implemented, a construction waste management plan 

was developed and implemented, seven types of construction materials were recycled (asphalt, 

concrete, wood, glass, gypsum, paint and insulation), biobased and certified wood products were 

installed, and resource-efficient engineered wood products were used (OSB, roof trusses, floor 

trusses, and joists).

To improve energy efficiency, the two-story stacked multiunit structure was ENERGY STAR 

compliant and met the minimum Bronze rating as designed. A 13 SEER air conditioning system 

was specified, a 91-percent AFUE boiler was used for hydronic heat, and domestic water heating 

was installed. An ENERGY STAR dishwasher, minimal recessed lighting, and a space-heating 

system that does not include air ducts were specified. The water-efficient green features included 

using a dishwasher that conserves water and minimizing the hot-water pipe runs. A lowvolume irrigation system was used with high distribution (DU) rotating spray heads, and an 

evapotranspiration-based (ET-based) controller with a rain sensor was installed.

The IEQ green features included no air handling equipment or return ducts located in a 

garage; no fireplace(s) or solid-fuel-burning appliances; low-emission, or nonemitting cabinets, 

shelves, and trim were specified; low-emission carpeting and carpet adhesives were specified; 

and no garage was installed. The kitchen exhaust fan was vented to the outdoors, all exhaust 

equipment was tested and verified to specification, all ventilation airflow was tested at point of 

exhaust, supply registers and return grilles and rough-ins were covered and protected during 

construction, no plumbing was installed in exterior walls or unconditioned space, the attic access 

was caulked and sealed, all exhaust fans were ENERGY STAR (at or below 1 sone), and a heatrecovery ventilator was installed. Additional green points were also obtained by measuring the 

moisture content of lumber and insulation before closing-in walls and floors, and measuring the 

moisture content of subfloors, substrates, and concrete slabs before applying any finish or flooring 

material. Training and orientation were provided to the building owners and occupants for the 

green building systems.

Although the original two-story stacked multiunit design obtained a total of 378 green points, 

the overall green rating falls short of achieving the Bronze-level rating because it lacks several 

water-efficiency and owner-training requirements. The design must implement all threshold 

requirements for all green categories to achieve a rating. Table 3-41 summarizes the baseline 

rating and identifies where the design exceeds Bronze-level rating thresholds. Additional greenscoring details are in Appendix B.

CHAPTER 3
64 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-41. Baseline Rating for Two-Story Stacked Multiunit

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 109 70 — Not

Applicable

Chapter 6: Resource Efficiency 45 99 54 — Met

Chapter 7: Energy Efficiency 30 49 19 — Met

Chapter 8: Water Efficiency 14 11 — 3 Met

Chapter 9: Indoor Environmental 

Quality 36 104 68 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 6 — 2 Not met

Section Total 172 378 211 5

Additional Points 50 — 211 —

Total Points 222 378 — 5

a

 Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Two-Story Stacked Original Design.

c

 Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e

 Mandatory Status identifies whether mandatory requirements were met for each green category.

• The annual maintenance cost to achieve the base rating is $323 (Appendix A).

• The annual energy operating cost to achieve the base rating is $615 (Appendix A).

• The annual water operating cost to achieve the base rating is $1,186 (Appendix A).

• The 30-year lifetime replacement cost to achieve the base rating is $15,308 (Appendix A).

Two-Story Stacked Multiunit Incremental Green Ratings

The Bronze Rating

All chapter thresholds and mandatory items were achieved, including an additional 217 points. 

The Bronze rating requires only 222 points, but we were able to achieve 389 points simply by 

implementing the mandatory items not included in the baseline design, along with several green 

practices that added modest cost to the project (for example, providing a green building manual, 

improving the energy performance to 15 percent [using energy modeling], and installing low-flow 

faucets and showerheads). The original baseline design actually represents a 10-percent reduction 

in energy usage when compared with 2006 IECC; therefore, the baseline energy performance falls 

short of the Bronze rating, which is based on a 15-percent reduction in energy usage (as per the 

NGBS Performance Path method of determining energy efficiency). To achieve the greater energy 

efficiency, the slab insulation was increased to R-10 and window performance was improved.

The largest one-time cost of going green is the initial investment in developing green 

documentation and the homeowner’s binder templates. For this study, we estimated the 

going-green cost at $5,64024 (this cost will be the case at any rated level). Along with the cost of 

developing green documentation, some additional cost was incurred to improve energy and water 
65

efficiency. Additional green-scoring details are in Appendix B. Table 3-42 contains the Bronze 

rating summary.

Table 3-42. Bronze Rating for Two-Story Stacked Multiunit

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 109 70 — Not 

Applicable

Chapter 6: Resource Efficiency 45 99 54 — Met

Chapter 7: Energy Efficiency 30 49 19 — Met

Chapter 8: Water Efficiency 14 16 2 — Met

Chapter 9: Indoor Environmental 

Quality 36 104 68 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 12 4 — Met

Section Total 172 389 217 0

Additional Points 50 — 217 0

Total Points 222 389 — 0

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Bronze Cost

The total initial cost to achieve the Bronze-level rating is shown in Table 3-43.

Table 3-43. Initial Cost to the Builder for the Bronze Two-Story Stacked Multiunit

Green Category Bronze Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 109 0

Chapter 6: Resource Efficiency 99 0

Chapter 7: Energy Efficiency 49 966

Chapter 8: Water Efficiency 16 0

Chapter 9: Indoor Environmental Quality 104 0

Chapter 10: Operation, Maintenance, and Building Owner Education 12 950

Total 389 $1,916

• The annual maintenance cost to achieve the Bronze rating is $323 (Appendix A).

• The annual energy operating cost to achieve the Bronze rating is $599 (Appendix A).

• The annual water operating cost to achieve the Bronze rating is $1,100 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Bronze rating is $15,308 (Appendix A).

CHAPTER 3
66 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The Bronze Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 

16-percent reduction in energy usage (Appendix C—Summary Data for Climate Zone 4C, Seattle, 

Washington). The annual water savings (compared with the Average Daily Per Capita Usage in 

Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) are approximately a 

9-percent reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for Seattle, 

Washington). The builder-owner education is at an Emerald rating. The lot design and development 

and IEQ are at a Gold rating, and the resource efficiency is at a Silver rating. Nonetheless, the 

overall green rating is Bronze because the total points are less than the Silver minimum.

The Silver Rating

To achieve the Silver rating, we improved the Bronze-rated design by meeting the threshold 

chapter requirements and selecting an additional 171 points in green features. The Silver rating 

requires 406 points; we achieved 477 points by specifying 2 by 6 in wall stud spacing at 24 in on 

center, adding R-5 foam sheathing, upgrading the boiler efficiency to 94 AFUE, specifying exterior 

doors with more efficient energy performance, and reducing the infiltration of the building 

envelope. In addition, we specified an ENERGY STAR refrigerator and washing machine, and 

a third-party inspection of installed insulation. For improved water efficiency, we specified a 

washing machine that conserves water, lower flow showerheads, and toilets with flush rates of 

1.28 gallons or less in all bathrooms. The IEQ was improved by specifying the use of low-emission 

carpet padding; installing low-emission insulation in walls, floors, ceilings, and ducts; preventing 

unwanted contaminants by sealing all penetrations in ceilings, walls, and floors; and avoiding 

the installation of any building material with visible mold. Additional green-scoring details are in 

Appendix B. Table 3-44 contains the Silver rating summary.

Table 3-44. Silver Rating for Two-Story Stacked Multiunit

Green Building Category

Silvera

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Silver

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 66 109 43 — Not 

Applicable

Chapter 6: Resource Efficiency 79 99 20 — Met

Chapter 7: Energy Efficiency 60 101 41 — Met

Chapter 8: Water Efficiency 26 37 11 — Met

Chapter 9: Indoor Environmental 

Quality 65 119 54 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 10 12 2 — Met

Section Total 306 477 171 0

continued on next page
67

Table 3-44. Silver Rating for Two-Story Stacked Multiunit (cont)

Green Building Category

Silvera

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Silver

Pointd

Shortfall

Mandatorye

Status

Additional Points 100 — 171 0

Total Points 406 477 — 0

a Silver Required Points are the minimum green points needed to achieve a Silver Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Silver are the green points that exceed the Silver minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Silver minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Silver Cost

The total initial cost to achieve the Silver-level rating is shown in Table 3-45.

Table 3-45. Initial Cost to the Builder for the Silver Two-Story Stacked Multiunit

Green Category Silver Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 109 0

Chapter 6: Resource Efficiency 99 0

Chapter 7: Energy Efficiency 101 4,954

Chapter 8: Water Efficiency 37 150

Chapter 9: Indoor Environmental Quality 119 0

Chapter 10: Operation, Maintenance, and Building Owner Education 12 950

Total 477 $6,054

• The annual maintenance cost to achieve the Silver rating is $323 (Appendix A).

• The annual energy operating cost to achieve the Silver rating is $550 (Appendix A).

• The annual water operating cost to achieve the Silver rating is $914 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Silver rating is $19,305 (Appendix A).

The Silver Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 

31-percent reduction in energy usage (Appendix C—Summary Data for Climate Zone 4C, Seattle, 

Washington). The annual water savings (compared with the Average Daily Per Capita Usage in 

Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) are approximately 

a 27-percent reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for 

Seattle, Washington). The builder-owner education remains at an Emerald rating. The lot design 

and development and IEQ are Gold rating, and the energy efficiency improves to a Gold rating. 

Nonetheless, the overall green rating is Silver because the total points are less than the Gold 

minimum.

CHAPTER 3
68 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The Gold Rating

To achieve the Gold rating, we improved the Silver-rated design by meeting the threshold chapter 

requirements and selecting an additional 111 points in green features. The Gold rating requires 

558 points; we achieved 569 points by changing the wall dimensions to optimize material usage, 

using precuts or panels for the wall system, specifying the use of gypsum board and cellulose 

insulation with 75-percent recycled content, and specifying five indigenous construction materials 

or products. To improve energy efficiency, we upgraded to a closed-loop solar hot-water system 

and required the use of Manual S to select HVAC equipment. In addition, the HVAC contractor 

and service technicians were certified by a nationally recognized program. To improve water 

efficiency, a low-volume drip irrigation system was specified that is designed and installed in 

accordance with the EPA WaterSense requirements. The IEQ was improved by installing carbon 

monoxide detectors and placing fixed exterior grilles or mats by the entranceways. Additional 

green-scoring details are in Appendix B. Table 3-46 contains the Gold rating summary.

Table 3-46. Gold Rating for Two-Story Stacked Multiunit

Green Building Category

Golda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Gold

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 93 109 16 — Not 

Applicable

Chapter 6: Resource Efficiency 113 127 14 — Met

Chapter 7: Energy Efficiency 100 154 54 — Met

Chapter 8: Water Efficiency 41 44 3 — Met

Chapter 9: Indoor Environmental 

Quality 100 123 23 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 11 12 1 — Met

Section Total 458 569 111 0

Additional Points 100 — 111 0

Total Points 558 569 — 0

a Gold Required Points are the minimum green points needed to achieve a Gold Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Gold are the green points that exceed the Gold minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Gold minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Gold Cost

The total initial cost to achieve the Gold-level rating is shown in Table 3-47.
69

Table 3-47. Initial Cost to the Builder for the Gold Two-Story Stacked Multiunit

Green Category Gold Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 109 0

Chapter 6: Resource Efficiency 127 0

Chapter 7: Energy Efficiency 154 11,579

Chapter 8: Water Efficiency 44 150

Chapter 9: Indoor Environmental Quality 123 44

Chapter 10: Operation, Maintenance, and Building Owner Education 12 950

Total 569 $12,723

• The annual maintenance cost to achieve the Gold rating is $323 (Appendix A).

• The annual energy operating cost to achieve the Gold rating is $472 (Appendix A).

• The annual water operating cost to achieve the Gold rating is $914 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Gold rating is $20,302 (Appendix A).

The Gold Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 50-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 4C, Seattle, Washington). 

The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, as defined 

by the Handbook of Water Use and Conservation—chapter 8) are approximately a 27-percent reduction 

in water usage (Appendix A—Indoor Water Usage Calculation Table for Seattle, Washington). The 

energy efficiency and building owner education is at an Emerald rating. Nonetheless, the overall 

green rating is Gold because the total points are less than the Emerald minimum.

The Emerald Rating

To achieve the Emerald rating, we improved the Gold-rated design by meeting the threshold 

chapter requirements and selecting an additional 101 points in green features. The Emerald 

rating requires 697 points; we achieved 698 points by specifying a plan to restore or enhance 

natural vegetation that is cleared during construction, limiting turf areas, selecting trees and 

vegetation that are native or regionally appropriate for local growing conditions, grouping plants 

with similar watering needs, locating trees in areas appropriate for shading, creating vegetative 

wind breaks appropriate for local conditions, and taking measures to support wildlife habitat. 

Green points were also achieved for having onsite supervision and coordination during clearing, 

grading, trenching, paving, and installation of utilities.

To improve resource efficiency, we specified detailed framing plans with sheathing layouts and 

cut lists, prefinished fiber cement siding, and a recycling area in the kitchen with a compost 

facility on site. Further, two FSC-certified products (interior doors and kitchen cabinets) were 

specified, along with the procurement of construction material from a factory that uses one-third 

of the process energy from a renewable resource. To improve energy efficiency, we specified the 

use of R-10 foam sheathing to the exterior, triple pane windows, a boiler efficiency of 95-percent 

CHAPTER 3
70 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

AFUE, and exterior doors with more efficient energy performance. We also specified the 

verification of the installation and performance of the heating and cooling system by a certified 

HVAC contractor.

We improved the water efficiency by installing a washing machine with a water factor of 6.0 or 

less, zoning the irrigation system separately for turf and bedding areas, and adding bubblers 

to the irrigation system. We also added a rainwater-collection and -distribution system. We 

improved the IEQ by specifying the use of low-emission hard-surface flooring that meets thirdparty certification requirements, specifying low-VOC interior and exterior adhesives and sealants 

that meet third-party certification requirements, installing kitchen and bath cabinets that contain 

no added urea formaldehyde, and adding a capillary break on the footing to prevent moisture 

migration into the foundation wall. We also installed a humidity-monitoring system with a 

mobile base unit that displays temperature and humidity. Additional green-scoring details are in 

Appendix B. Table 3-48 contains the Emerald rating summary.

Table 3-48. Emerald Rating for Two-Story Stacked Multiunit

Green Building Category

Emeralda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Emerald

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 119 146 27 Not 

Applicable

Chapter 6: Resource Efficiency 146 147 1 Met

Chapter 7: Energy Efficiency 120 180 60 Met

Chapter 8: Water Efficiency 60 62 2 Met

Chapter 9: Indoor Environmental 

Quality 140 146 6 Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 12 17 5 Met

Section Total 597 698 101 0

Additional Points 100 — 101 0

Total Points 697 698 — 0

a Emerald Required Points are the minimum green points needed to achieve an Emerald Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Emerald are the green points that exceed the Emerald minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Emerald minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.
71

The Emerald Cost

The total initial cost to achieve the Emerald-level rating is shown in Table 3-49.

Table 3-49. Initial Cost to the Builder for the Emerald Two-Story Stacked Multiunit

Green Category Emerald Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 146 3,616

Chapter 6: Resource Efficiency 147 4,686

Chapter 7: Energy Efficiency 180 14,831

Chapter 8: Water Efficiency 62 582

Chapter 9: Indoor Environmental Quality 146 191

Chapter 10: Operation, Maintenance, and Building Owner Education 17 950

Total 698 $24,856

• The annual maintenance cost to achieve the Emerald rating is $323 (Appendix A).

• The annual energy operating cost to achieve the Emerald rating is $444 (Appendix A).

• The annual water operating cost to achieve the Emerald rating is $870 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Emerald rating is $20,302 (Appendix A).

The Emerald Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 

61-percent reduction in energy usage (Appendix C—Summary Data for Climate Zone 4C, Seattle, 

Washington). The annual water savings (compared with the Average Daily Per Capita Usage in 

Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) are approximately 

a 31-percent reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for 

Seattle, Washington). The water usage reduction estimate does not include the water that would 

be reduced from using the rainwater-collection system (instead of municipal water sources).

Overall cost and performance data are provided in Table 3-50. The water utility rates are based 

on Seattle, Washington water supply and sewer meter rates (source: Seattle Public Utilities). We 

base the simple payback periods for energy and water efficiency on the current cost estimates and 

projected savings and do not consider future rate increases, inflation, replacement costs, or other 

conditions over the 30-year evaluation period.

CHAPTER 3
72 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-50. Overall Cost and Performance Data for Two-Story Stacked Multiunit

SHA

Two-Story Multiunit

946 ft2

Baseline Bronze Silver Gold Emerald

Cost Comparison

Total Initial Green Cost ($) Unknown 1,916 6,054 12,723 24,856

Annual Maintenance Cost ($) 323 323 323 323 323

Annual Energy Operating Cost ($) 615 599 550 472 444

Annual Water Usage Cost ($) 1,186 1,100 914 914 870

30-Year Lifetime Replacement Cost ($) 11,010 11,010 15,371 25,756 31,134

Incremental Performance Improvement

Energy Efficiency (e-Ratio)

(compare to 2006 IECC) 0.89 0.84 0.69 0.50 0.39

Water Efficiency (%)

(compares to 56.4 gpda) 0.6 8.8 26.7 26.7 30.9

Land and Lot Use (points)

(NGBS Rating)

109

Gold

109

Gold

109

Gold

109

Gold

146

Emerald

Resource Efficiency (points)

(NGBS Rating)

99

Silver

99

Silver

99

Silver

127

Gold

147

Emerald

IEQ (points)

(NGBS Rating)

104

Gold

104

Gold

119

Gold

123

Gold

146

Emerald

Green Education for Owner (points)

(NGBS Rating)

6

NR

12

Emerald

12

Emerald

12

Emerald

17

Emerald

Simple Payback Periods

Energy Efficiency (years)

(initial energy cost and savings) NA 60 76 81 87

Water Efficiency (years)

(initial water cost and savings) NA 0 <1 <1 2

a The benchmark for comparison assumes three occupants using 56.4 (gpd) each. The benchmark cost is $1,192; all projected savings are 

compared with this benchmark.

IEQ = Indoor Environmental Quality; NA = not applicable; NGBS = National Green Building Standard; NR = not required.

3.4 Climate Zone #5

Akron, Ohio, is located in climate zone 5A, a predominately heating, cool-humid climate with 

4,808 cooling degree hours (CDH) and 6,248 heating degree days (HDD). Cuyahoga Falls, Ohio, 

is located in climate zone 5A, a predominately heating, cool-humid climate with 4,772 CDH and 

6,179 HDD.
73

3.4.1 Akron, Ohio: Edgewood Homes Development

In Ohio, approximately 172 new units consisting of apartments, townhouses and single-family 

homes were constructed in an existing neighborhood renovated with HOPE grant funding from 

the U.S. Department of Housing and Development. This revitalization project was formerly a 

public housing development built in the 1940s consisting of 112 deteriorating apartment units. The 

apartment units were demolished and replaced with attractive mixed-income housing built in a 

variety of styles.

The newly developed neighborhood, now named Edgewood Homes, incorporates green building 

practices into its housing designs, along with making the homes easily accessible to community 

services and amenities. The Edgewood Homes development and its newly constructed homes 

were designed and built according to the criteria of the Ohio Green Communities program. 

Green Communities is part of Enterprise Green Communities, which is a national green building 

program. The Green Communities criteria promote smart growth, energy conservation, public 

health, operational savings, and sustainable building practices in affordable housing design.

We selected a Type A Model (a two-story attached townhouse unit with an attached garage) and 

a Type D Model (a two-story single-family unit with a detached garage) in the Edgewood Homes 

Development of Akron, Ohio to demonstrate the NGBS evaluation process. These homes were 

designed with the intent of being green.

Townhouse Type A—Baseline Green Rating

Many green features are included in the original townhouse design. In fact, the baseline green 

rating exceeds the minimum threshold points for a Bronze rating in all areas, except for the 

building owner education requirements. The mandatory requirements of water efficiency were 

met, but all other categories of green lacked the necessary mandatory requirements.

The townhouse Type A design was built in accordance with the 2003 Residential Code of Ohio. 

Green points were achieved for building on a grayfield site that was previously developed. 

Many previously existing units were demolished to make room for construction of new units. 

Several measures were taken to minimize soil disturbance, erosion, restore natural vegetation, 

limit turf areas, and protect trees during construction. The resource-efficient green features 

included a moderate-sized conditioned space (that is, 1,371 ft2

), the use of optimal material sizes, 

prefabricated components, moisture prevention practices, and renewable materials. The energy 

efficient green features include a 10-percent UA improvement from the ICC IECC (Section 402.1.4), 

the use of ENERGY STAR appliances (that is, refrigerator, dishwasher, and washing machine), 

energy efficient lighting, and a 92-percent efficient gas furnace. The water-efficient green features 

included using appliances that conserve water (that is, dishwasher and washing machine), lowflow showerheads and faucets, minimizing the hot-water pipe runs, and using an irrigation 

system with smart controls. The IEQ green features included using cabinets that are KCMA ESP 

01 compliant, using a direct-vent furnace, and avoiding the use of air-handling equipment or 

return ducts in the garage, fireplace(s), and solid-fuel-burning appliances. The kitchen exhaust fan 

was vented to the outdoors, the HVAC system was cleaned and inspected after construction, and 

plumbing was not installed in exterior walls or unconditioned spaces.

CHAPTER 3
74 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Although the original townhouse design obtained a total of 269 green points, the overall green 

rating falls short of achieving the Bronze-level rating because it lacks several mandatory practices. 

The design must implement all mandatory practices and meet the threshold requirements for 

all green categories to achieve a rating. Table 3-51 summarizes the baseline rating and identifies 

where the original design exceeds the minimum Bronze rating. Additional green-scoring details 

are in Appendix B.

Table 3-51. Baseline Rating for Townhouse Type A

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 76 37 — Not

Applicable

Chapter 6: Resource Efficiency 45 66 21 — Not Met

Chapter 7: Energy Efficiency 30 53 23 — Not Met

Chapter 8: Water Efficiency 14 35 21 — Met

Chapter 9: Indoor Environmental 

Quality 36 39 3 — Not Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 — — 8 Not Met

Section Total 172 269 105 8

Additional Points 50 — 105 —

Total Points 222 269 — 8

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Townhouse Type A Original Design.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

• The annual maintenance cost to achieve the base rating is $367 (Appendix A).

• The annual energy operating cost to achieve the base rating is $1,158 (Appendix A).

• The annual water operating cost to achieve the base rating is $576 (Appendix A).

• The 30-year lifetime replacement cost to achieve the base rating is $13,078 (Appendix A).

Townhouse Type A—Incremental Green Ratings

The Bronze Rating

To achieve the Bronze rating, the remaining mandatory green requirements were met. These 

requirements included adding specifications to the plans to provide proper slope at finish grade, 

conducting a third-party review to verify design and compliance with the energy section, and 

specifying proper air sealing (that is, between the conditioned living space and garage, attic, 

walls, and ceiling). The energy performance was improved to 15 percent (using energy modeling). 

The original baseline design actually represents a 6-percent reduction in energy usage when 

compared with 2006 IECC; therefore, the baseline energy performance falls short of the Bronze 
75

rating, which is based on a 15-percent reduction in energy usage (as per the NGBS performance 

path method of determining energy efficiency). To achieve the greater energy efficiency, the 

HVAC system equipment was sized in accordance with the ACCA Manual J, ductwork insulation 

was improved, and the ductwork was relocated to the interior conditioned space. Finally, the 

building owner’s manual was specified to provide information about the green features, building 

operation, and maintenance.

All chapter thresholds and mandatory items were achieved, including an additional 148 points. 

The Bronze rating requires only 222 points, but we were able to achieve 320 points simply by 

implementing the mandatory items not met at the baseline, along with several green practices that 

added modest cost to the project (for example, adding an interior subslab foundation perimeter 

drain, installing a passive radon mitigation system (Zone 1), and installing a showerhead with a 

flow rate of 1.6 to less than 2.0 gpm).

Also, several green practices were implemented that added little or no additional cost, such as 

conducting third-party verification of the insulation and air sealing, adding a capillary break on 

the footing to prevent moisture migration, and insulating ductwork to a minimum of R-8.

The largest one-time cost of going green is the initial investment in developing green 

documentation and the homeowner’s binder templates. For this study, we estimated the goinggreen cost at $5,64025 (this cost will be the case at any rated level). Additional green-scoring details 

are in Appendix B. Table 3-52 contains the Bronze rating summary.

Table 3-52. Bronze Rating for Townhouse Type A

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 76 37 — Not 

Applicable

Chapter 6: Resource Efficiency 45 74 29 — Met

Chapter 7: Energy Efficiency 30 65 35 — Met

Chapter 8: Water Efficiency 14 36 22 — Met

Chapter 9: Indoor Environmental 

Quality 36 60 24 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 9 1 — Met

Section Total 172 320 148 0

Additional Points 50 — 148 0

Total Points 222 320 — 0

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

CHAPTER 3
76 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The Bronze Cost

The total initial cost to achieve the Bronze-level rating is shown in Table 3-53.

Table 3-53. Initial Cost to the Builder for the Bronze Townhouse Type A

Green Category Bronze Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 76 0

Chapter 6: Resource Efficiency 74 365

Chapter 7: Energy Efficiency 65 647

Chapter 8: Water Efficiency 36 0

Chapter 9: Indoor Environmental Quality 60 106

Chapter 10: Operation, Maintenance, and Building Owner Education 9 950

Total 320 $2,068

• The annual maintenance cost to achieve the Bronze rating is $367 (Appendix A).

• The annual energy operating cost to achieve the Bronze rating is $1,092 (Appendix A).

• The annual water operating cost to achieve the Bronze rating is $554 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Bronze rating is $13,078 (Appendix A).

The Bronze Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 15-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 5, Akron, Ohio). The 

annual water savings (compared with the Average Daily Per Capita Usage in Gallons, as defined by 

the Handbook of Water Use and Conservation—chapter 8) are approximately a 14-percent reduction in 

water usage (Appendix A—Indoor Water Usage Calculation Table for Akron, Ohio). The lot design 

and development, energy efficiency, and water efficiency categories actually have low-level Silver 

ratings, and the building owner education category is within 1 point of a Silver rating. Nonetheless, 

the overall green rating is Bronze because the total points are less than the Silver minimum.

The Silver Rating

To achieve the Silver rating, we improved the Bronze-rated design by meeting the threshold 

chapter requirements and selecting an additional 113 points in green features. The Silver rating 

requires 406 points; we achieved 419 points by specifying the development and implementation of 

a stormwater management plan, and preserving natural water and drainage features. To improve 

resource efficiency, wall-stud spacing was increased to 24 in on center and single top plates 

were used, sorting and reuse of scrap building materials was facilitated, and the use of building 

materials with recycled content was specified. To improve the energy efficiency, we improved the 

building enclosure insulation and air-sealing specifications, improved the water heater efficiency 

by specifying a tankless water heater, and specified improved ductwork sealing. We also 

required a third-party inspection of the HVAC installation and duct leakage to ensure specified 

performance was met.
77

The IEQ was improved by specifying the use of low-VOC sealants, adhesives, insulation, and 

interior trim, cabinets, and doors. MERV 8 filters and a carbon monoxide detector were specified, 

along with improved sealing of the living space to prevent unwanted contaminants. Training 

and orientation of the building owners for the green building systems and operations were also 

required. Additional green-scoring details are in Appendix B. Table 3-54 contains the Silver rating 

summary.

Table 3-54. Silver Rating for Townhouse Type A

Green Building Category

Silvera

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Silver

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 66 88 22 — Not 

Applicable

Chapter 6: Resource Efficiency 79 92 13 — Met

Chapter 7: Energy Efficiency 60 87 27 — Met

Chapter 8: Water Efficiency 26 36 10 — Met

Chapter 9: Indoor Environmental 

Quality 65 101 36 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 10 15 5 — Met

Section Total 306 419 113 0

Additional Points 100 — 113 0

Total Points 406 419 — 0

a Silver Required Points are the minimum green points needed to achieve a Silver Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Silver are the green points that exceed the Silver minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Silver minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Silver Cost

The total initial cost to achieve the Silver-level rating is shown in Table 3-55.

Table 3-55. Initial Cost to the Builder for the Silver Townhouse Type A

Green Category Silver Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 88 520

Chapter 6: Resource Efficiency 92 371

Chapter 7: Energy Efficiency 87 3,293

Chapter 8: Water Efficiency 36 0

Chapter 9: Indoor Environmental Quality 101 367

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 419 $5,595

CHAPTER 3
78 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

• The annual maintenance cost to achieve the Silver rating is $367 (Appendix A).

• The annual energy operating cost to achieve the Silver rating is $946 (Appendix A).

• The annual water operating cost to achieve the Silver rating is $554 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Silver rating is $14,418 (Appendix A).

The Silver Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 30-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 5, Akron, Ohio). 

The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, as 

defined by the Handbook of Water Use and Conservation—chapter 8) are approximately a 14-percent 

reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for Akron, Ohio). 

The IEQ category actually has a Gold rating, and the building owner education category has an 

Emerald rating. Nonetheless, the overall green rating is Silver because the total points are less 

than the Gold minimum, and most green categories are also less than the Gold minimum.

The Gold Rating

To achieve the Gold rating, we improved the Silver-rated design by meeting the threshold chapter 

requirements and selecting an additional 152 points in green features. The Gold rating requires 

558 points; we achieved 610 points by specifying maintenance of vegetation during construction, 

implementation of many of the green practices for conserving the landscape, and requiring that 

the disturbance of vegetation and tree zones be avoided.

To improve resource efficiency, we specified a Frost Protected Shallow Foundation (FPSF), 

a built-in recycling area in the kitchen, a compost facility on site, three types of recycled, 

indigenous building material, and OSB procured from a factory that uses renewable energy in the 

manufacturing process.

To improve the energy efficiency, we specified a closed-loop solar hot-water system, reduced the 

structure’s infiltration rate further, required that the installation and performance of the HVAC 

system was by a certified technician, selected the HVAC equipment using ACCA Manual S, and 

specified 1 in foam sheathing on the exterior.

To improve water efficiency, low-flow (1.28 gal or less per flush) toilets were specified for all 

water closets. The IEQ was improved by selecting kitchen and bath cabinets with no added urea 

formaldehyde, specifying higher performance exhaust fans (in kitchen, bathroom, and laundry 

area), and installing a whole-house balanced ventilation system. Additional green-scoring details 

are in Appendix B. Table 3-56 contains the Gold rating summary.
79

Table 3-56. Gold Rating for Townhouse Type A

Green Building Category

Golda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Gold

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 93 125 32 — Not 

Applicable

Chapter 6: Resource Efficiency 113 118 5 — Met

Chapter 7: Energy Efficiency 100 161 61 — Met

Chapter 8: Water Efficiency 41 54 13 — Met

Chapter 9: Indoor Environmental 

Quality 100 137 37 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 11 15 4 — Met

Section Total 458 610 152 0

Additional Points 100 — 152 0

Total Points 558 610 — 0

a Gold Required Points are the minimum green points needed to achieve a Gold Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Gold are the green points that exceed the Gold minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Gold minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Gold Cost

The total initial cost to achieve the Gold-level rating is shown in Table 3-57.

Table 3-57. Initial Cost to the Builder for the Gold Townhouse Type A

Green Category Gold Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 125 628

Chapter 6: Resource Efficiency 118 1,561

Chapter 7: Energy Efficiency 161 11,724

Chapter 8: Water Efficiency 54 525

Chapter 9: Indoor Environmental Quality 137 1,039

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 610 $16,521

• The annual maintenance cost to achieve the Gold rating is $414 (Appendix A).

• The annual energy operating cost to achieve the Gold rating is $825 (Appendix A).

• The annual water operating cost to achieve the Gold rating is $477 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Gold rating is $29,418 (Appendix A).

CHAPTER 3
80 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The Gold Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 50-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 5, Akron, Ohio). 

The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, as 

defined by the Handbook of Water Use and Conservation—chapter 8) are approximately a 27-percent 

reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for Akron, Ohio). 

The IEQ category is close to the Emerald rating, and the building owner education, energy 

efficiency, and lot design and development categories have an Emerald rating. Nonetheless, the 

overall green rating is Gold because the total points are less than the Emerald minimum.

The Emerald Rating

To achieve the Emerald rating, we improved the Gold-rated design by meeting the threshold 

chapter requirements and selecting an additional 106 points in green features. The Emerald rating 

requires 697 points; we achieved 703 points by establishing a knowledgeable team with respect 

to lot design, preparation, and development; by providing basic training in natural resource 

protection for the onsite supervisor; and including measures to support wildlife habitat.

To improve resource efficiency, we required detailed framing plans and optimized building 

dimensions to reduce material cuts, specified siding that required no site-applied finish, added 

flashing details to the plans, and required the development and implementation of a construction 

waste management plan (including onsite recycling of construction materials for onsite 

application).

To improve the energy efficiency, we specified R-60 insulation for the attic with raised heel 

trusses, R-10 foam sheathing for the exterior, improved thermal window performance, a higher 

efficiency furnace, improved infiltration rate, and a balanced HVAC system.

The water efficiency was improved by installing a rainwater-collection and -distribution system. 

The IEQ was improved by specifying the use of exterior low-VOC adhesives and sealants. 

Additional green-scoring details are in Appendix B. Table 3-58 contains the Emerald rating 

summary.
81

Table 3-58. Emerald Rating for Townhouse Type A

Green Building Category

Emeralda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Emerald

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 119 137 18 Not 

Applicable

Chapter 6: Resource Efficiency 146 155 9 Met

Chapter 7: Energy Efficiency 120 192 72 Met

Chapter 8: Water Efficiency 60 62 2 Met

Chapter 9: Indoor Environmental 

Quality 140 142 2 Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 12 15 3 Met

Section Total 597 703 106 0

Additional Points 100 — 106 0

Total Points 697 703 — 0

a Emerald Required Points are the minimum green points needed to achieve an Emerald Rating

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements

c Additional Claimed Points Above Emerald are the green points that exceed the Emerald minimum for each green category

d Point Shortfalls are the number of green points needed to meet the Emerald minimum for each green category

e Mandatory Status identifies whether mandatory requirements were met for each green category

The Emerald Cost

The total initial cost to achieve the Emerald-level rating is shown in Table 3-59.

Table 3-59. Initial Cost to the Builder for the Emerald Townhouse Type A

Green Category Emerald Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 137 2,181

Chapter 6: Resource Efficiency 155 4,630

Chapter 7: Energy Efficiency 192 20,445

Chapter 8: Water Efficiency 62 907

Chapter 9: Indoor Environmental Quality 142 1,155

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 703 $30,362

• The annual maintenance cost to achieve the Emerald rating is $414 (Appendix A).

• The annual energy operating cost to achieve the Emerald rating is $756 (Appendix A).

• The annual water operating cost to achieve the Emerald rating is $477 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Emerald rating is $31,360 (Appendix A).

CHAPTER 3
82 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The Emerald Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 60-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 5, Akron, Ohio). 

The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, as 

defined by the Handbook of Water Use and Conservation—chapter 8) are approximately a 27-percent 

reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for Akron, Ohio). 

The water usage reduction estimate does not include the water that would be reduced from using 

the rainwater-collection system (instead of municipal water sources).

Overall cost and performance data are provided in Table 3-60. The water utility rates are based 

on Akron, Ohio water supply and sewer meter rates (source: Akron Public Utilities Bureau). We 

base the simple payback periods for energy and water efficiency on the current cost estimates and 

projected savings and do not consider future rate increases, inflation, replacement costs, or other 

conditions over the 30-year evaluation period.
83

Table 3-60. Overall Cost and Performance Data for Townhouse Type A

AMHA

Townhouse Type A

1,296 ft2

Baseline Bronze Silver Gold Emerald

Cost Comparison

Total Initial Green Cost ($) Unknown 2,068 5,595 16,521 30,362

Annual Maintenance Cost ($) 367 367 367 414 414

Annual Energy Operating Cost ($) 1,158 1,092 946 825 756

Annual Water Usage Cost ($) 576 554 554 477 477

30-Year Lifetime Replacement Cost ($) 13,078 13,078 14,418 29,418 31,360

Incremental Performance Improvement

Energy Efficiency (e-Ratio)

(compare to 2006 IECC) 0.94 0.85 0.68 0.49 0.39

Water Efficiency (%)

(compares to 56.4 gpda) 10.2 13.9 13.9 26.7 26.7

Land and Lot Use (points)

(NGBS Rating)

76

Silver

76

Silver

88

Silver

125

Gold

137

Emerald

Resource Efficiency (points)

(NGBS Rating)

66

Bronze

74

Bronze

92

Silver

118

Gold

155

Emerald

IEQ (points)

(NGBS Rating)

39

Bronze

60

Bronze

101

Gold

137

Gold

142

Emerald

Green Education for Owner (points)

(NGBS Rating)

0

NR

9

Bronze

15

Emerald

15

Emerald

15

Emerald

Simple Payback Periods

Energy Efficiency (years)

(initial energy cost and savings) NA 10 16 35 51

Water Efficiency (years)

(initial water cost and savings) NA 0 0 3 6

a The benchmark for comparison assumes three occupants using 56.4 (gpd) each. The benchmark cost is $637; all projected savings are compared 

with this benchmark.

IEQ = Indoor Environmental Quality; NA = not applicable; NGBS = National Green Building Standard; NR = not required.

CHAPTER 3
84 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Single-Family Type D—Baseline Green Rating

Many green features are included in the original single-family design. In fact, the baseline green 

rating exceeds the minimum threshold points for a Bronze rating in all areas, except for the 

building owner education requirements. The mandatory requirements of water efficiency were 

met but all other categories of green but lacked the necessary mandatory requirements. Mandatory 

requirements are typically minimum building code requirements from the 2006 edition of the 

IRC—these requirements have no green point assigned values. Mandatory requirements, therefore, 

do not contribute to the overall numerical score. However, since they are classified as mandatory, 

any non-compliance of mandatory requirements renders a building as ineligible for a green rating 

under the NGBS. For this house design, certain mandatory items could not be determined from its 

specifications; including but not limited to: positive slope of the soil to direct rainwater away from 

the foundation, foundation footer drainage piping, moisture tolerant construction materials under 

bathroom tile, and crawlspace moisture management design.

The single-family Type D design was built in accordance with the 2003 Residential Code of Ohio. 

Green points were achieved for building on a grayfield site that was previously developed. Many 

previously existing units were demolished to make room for construction of new units. The lot 

provided for, and was close to, pedestrian access to community resources. According to design 

specifications, measures were taken to minimize soil disturbance and erosion, incorporate a 

landscape plan to restore and enhance natural vegetation, limit turf areas, and to protect trees and 

vegetation during construction. The general contractor was required to provide onsite supervision 

and coordination, select native species of trees for planting, and install light-colored hardscaping.

The resource-efficient green features included a conditioned space (above grade) of 1,908 ft2

, roof 

trusses at 24 in on center, the use of optimal material sizes, prefabricated components, windows 

and doors that do not require paint or stain, overhangs to protect from the rain and sun, moisture 

prevention practices, and renewable and resource-efficient materials. The energy efficient green 

features included upgraded windows and doors (compared with code required performance), 

the use of ENERGY STAR appliances (that is, refrigerator, dishwasher, and washing machine), a 

92-percent efficient gas furnace, energy efficient lighting, and return ducts in every room with a 

door.

The water-efficient green features included using appliances that conserve water (that is, 

dishwasher and washing machine), using low-flow showerheads and faucets, minimizing the 

hot-water pipe runs, and specifying a landscape plan to limit water and energy use (that is, 

avoiding the use of an irrigation system). The IEQ green features included using cabinets that 

were KCMA ESP 01 compliant, using a direct-vent furnace, and avoiding the use of fireplace(s) or 

solid-fuel-burning appliances. The kitchen exhaust fan was vented to the exterior, the HVAC duct 

openings were covered during construction, the plumbing was not installed in exterior walls or 

unconditioned spaces, and a detached garage was specified.

Although the original single-family design obtained a total of 256 green points, the overall green 

rating falls short of achieving the Bronze-level rating because it lacks several mandatory practices. 

The design must implement all mandatory practices and meet the threshold requirements for 

all green categories to achieve a rating. Table 3-61 summarizes the baseline rating and identifies 

where the original design exceeds the minimum Bronze rating. Additional green-scoring details 

are in Appendix B.
85

Table 3-61. Baseline Rating for Single-Family Type D

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 72 33 — Not

Applicable

Chapter 6: Resource Efficiency 45 57 12 — Not Met

Chapter 7: Energy Efficiency 30 42 12 — Not Met

Chapter 8: Water Efficiency 14 36 22 — Met

Chapter 9: Indoor Environmental 

Quality 36 49 13 — Not Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 — — 8 Not Met

Section Total 172 256 92 8

Additional Points 50 — 92 —

Total Points 222 256 — 8

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Single-Family Type D Original Design.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

• The annual maintenance cost to achieve the base rating is $367 (Appendix A).

• The annual energy operating cost to achieve the base rating is $1,685 (Appendix A).

• The annual water operating cost to achieve the base rating is $620 (Appendix A).

• The 30-year lifetime replacement cost to achieve the base rating is $13,078 (Appendix A).

Single-Family Type D—Incremental Green Ratings

The Bronze Rating

To achieve the Bronze rating, the remaining mandatory green requirements were met. These 

requirements included adding specifications to the plans to provide proper slope at finish grade, 

conducting a third-party review to verify design and compliance with the energy section, and 

specifying proper air sealing (that is, between the conditioned living space and unconditioned 

space, windows, and doors). The energy performance was improved to 15 percent (using energy 

modeling). The original baseline design actually represents a 12-percent reduction in energy 

usage when compared with 2006 IECC; therefore, the baseline energy performance falls short of 

the Bronze rating, which is based on a 15-percent reduction in energy usage (as per the NGBS 

performance path method of determining energy efficiency). To achieve the greater energy 

efficiency, the HVAC system equipment is sized in accordance with the ACCA Manual J and 

ductwork insulation is improved. Finally, the building owner’s manual is specified to provide 

information about the green features, building operation, and maintenance.

All chapter thresholds and mandatory items were achieved, including an additional 172 points. 

The Bronze rating requires only 222 points, but we were able to achieve 344 points simply by 

CHAPTER 3
86 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

implementing the mandatory items not met, along with several green practices that added 

modest cost to the project (for example, a pest management plan to minimize chemical use, onsite 

tree trimmings and stumps ground and applied as mulch, additional landscaping practices 

implemented to conserve water and provide wind breaks, an interior subslab foundation 

perimeter drain, and at least two certified wood-based products). In addition, we specified the 

installation of a passive radon mitigation system (Zone 1), showerheads with a flow rate of 1.6 to 

less than 2.0 gpm, and MERV 8 filters on the central air system.

The largest one-time cost of going green is the initial investment in developing green 

documentation and the homeowner’s binder templates. For this study, we estimated the goinggreen cost at $5,64026 (this cost will be the case at any rated level). Additional green-scoring details 

are in Appendix B. Table 3-62 contains the Bronze rating summary.

Table 3-62. Bronze Rating for Single-Family Type D

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 96 57 — Not 

Applicable

Chapter 6: Resource Efficiency 45 64 19 — Met

Chapter 7: Energy Efficiency 30 64 34 — Met

Chapter 8: Water Efficiency 14 37 23 — Met

Chapter 9: Indoor Environmental 

Quality 36 74 38 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 9 1 — Met

Section Total 172 344 172 0

Additional Points 50 — 172 0

Total Points 222 344 — 0

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.
87

The Bronze Cost

The total initial cost to achieve the Bronze-level rating is shown in Table 3-63.

Table 3-63. Initial Cost to the Builder for the Bronze Single-Family Type D

Green Category Bronze Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 96 0

Chapter 6: Resource Efficiency 64 691

Chapter 7: Energy Efficiency 64 1,175

Chapter 8: Water Efficiency 37 0

Chapter 9: Indoor Environmental Quality 74 140

Chapter 10: Operation, Maintenance, and Building Owner Education 9 950

Total 344 $2,956

• The annual maintenance cost to achieve the Bronze rating is $367 (Appendix A).

• The annual energy operating cost to achieve the Bronze rating is $1,612 (Appendix A).

• The annual water operating cost to achieve the Bronze rating is $620 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Bronze rating is $13,078 (Appendix A).

The Bronze Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 18-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 5, Akron, Ohio). 

The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, as 

defined by the Handbook of Water Use and Conservation—chapter 8) are approximately a 20-percent 

reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for Akron, Ohio). 

The lot design and development category has a low-level Gold rating, and the IEQ, energy 

efficiency, and water efficiency categories have low-level Silver ratings. The building owner 

education category is within 1 point of a Silver rating. Nonetheless, the overall green rating is 

Bronze because the total points are less than the Silver minimum.

The Silver Rating

To achieve the Silver rating, we improved the Bronze-rated design by meeting the threshold 

chapter requirements and selecting an additional 140 points in green features. The Silver rating 

requires 406 points; we achieved 446 points by specifying a stud spacing of 24 in on center with 

the use of single top plates, specifying downspout extensions or splash blocks to carry water 

at least 5 feet away from the foundation, requiring the sorting and reusing of scrap building 

materials, and specifying the use of building materials with recycled content.

To improve energy efficiency, we improved the building enclosure insulation and air sealing, 

specified a direct-vent gas tankless water heater, and reduced duct leakage. We also required a 

third-party preinspection and postinspection of the insulation and ductwork, and verification of 

the envelope and duct leakage.

CHAPTER 3
88 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The IEQ was improved by specifying the use of low-emission carpet and padding; specifying 

interior low-VOC sealants and adhesives; specifying low-emission insulation in walls, floors, 

ceilings, and ducts; sampling moisture content of lumber for acceptable levels; and using a carbon 

monoxide detector. Finally, training and orientation of the building owners for the green building 

systems and operations were required. Additional green-scoring details are in Appendix B. Table 

3-64 contains the Silver rating summary.

Table 3-64. Silver Rating for Single-Family Type D

Green Building Category

Silvera

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Silver

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 66 96 30 — Not 

Applicable

Chapter 6: Resource Efficiency 79 86 7 — Met

Chapter 7: Energy Efficiency 60 107 47 — Met

Chapter 8: Water Efficiency 26 37 11 — Met

Chapter 9: Indoor Environmental 

Quality 65 105 40 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 10 15 5 — Met

Section Total 306 446 140 0

Additional Points 100 — 140 0

Total Points 406 446 — 0

a Silver Required Points are the minimum green points needed to achieve a Silver Rating

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements

c Additional Claimed Points Above Silver are the green points that exceed the Silver minimum for each green category

d Point Shortfalls are the number of green points needed to meet the Silver minimum for each green category

e Mandatory Status identifies whether mandatory requirements were met for each green category

The Silver Cost

The total initial cost to achieve the Silver-level rating is shown in Table 3-65.

Table 3-65. Initial Cost to the Builder for the Silver Single-Family Type D

Green Category Silver Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 96 0

Chapter 6: Resource Efficiency 86 697

Chapter 7: Energy Efficiency 107 2,985

Chapter 8: Water Efficiency 37 0

Chapter 9: Indoor Environmental Quality 105 274

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 446 $5,000
89

• The annual maintenance cost to achieve the Silver rating is $367 (Appendix A).

• The annual energy operating cost for the Silver rating is $1,408 (Appendix A).

• The annual water operating cost for the Silver rating is $620 (Appendix A).

• The 30-year lifetime replacement cost for the Silver rating is $14,418 (Appendix A).

The Silver Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 30-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 5, Akron, Ohio). 

The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, as 

defined by the Handbook of Water Use and Conservation—chapter 8) are approximately a 20-percent 

reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for Akron, Ohio). 

The lot design and development, IEQ, and energy efficiency categories have Gold ratings, and the 

building owner education category is an Emerald rating. Nonetheless, the overall green rating is 

Silver because the total points are less than the Gold minimum.

The Gold Rating

To achieve the Gold rating, we improved the Silver-rated design by meeting the threshold chapter 

requirements and selecting an additional 152 points in green features. The Gold rating requires 

558 points; we achieved 610 points by specifying measures to support wildlife habitat, and 

protecting trees and vegetation during construction. In addition, the utilities were required to be 

installed by tunneling, using smaller or low ground-pressure equipment.

To improve resource efficiency, we specified the use of a built-in recycling area in the kitchen and 

an onsite compost facility, five types of building materials must be recycled, indigenous materials 

must be used, and OSB must be procured from a factory that uses renewable energy in the 

manufacturing process.

To improve the energy efficiency, we specified a closed-loop solar hot-water system, reduced the 

structure’s infiltration rate further, increased ceiling insulation, and specified 1-in exterior foam 

sheathing. In addition, we specified verification of the installation and performance of the heating 

and cooling system by a certified technician, selected the equipment using ACCA Manual S, and 

ensured that a nationally recognized program certified the installation technician(s).

To improve water efficiency, low-flow (1.28 gal or less per flush) toilets were specified for all 

water closets. The IEQ was improved by selecting kitchen and bath cabinets with no added urea 

formaldehyde, providing bath and laundry fans with automatic timers and humidistats, verifying 

all exhaust fans meet specifications and have proper airflow, and requiring the installation of a 

whole-house balanced ventilation system. Additional green-scoring details are in Appendix B. 

Table 3-66 contains the Gold rating summary.

CHAPTER 3
90 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-66. Gold Rating for Single-Family Type D

Green Building Category

Golda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Gold

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 93 114 21 — Not 

Applicable

Chapter 6: Resource Efficiency 113 113 — — Met

Chapter 7: Energy Efficiency 100 166 66 — Met

Chapter 8: Water Efficiency 41 61 20 — Met

Chapter 9: Indoor Environmental 

Quality 100 141 41 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 11 15 4 — Met

Section Total 458 610 152 0

Additional Points 100 — 152 0

Total Points 558 610 — 0

a Gold Required Points are the minimum green points needed to achieve a Gold Rating

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements

c Additional Claimed Points Above Gold are the green points that exceed the Gold minimum for each green category

d Point Shortfalls are the number of green points needed to meet the Gold minimum for each green category

e Mandatory Status identifies whether mandatory requirements were met for each green category

The Gold Cost

The total initial cost to achieve the Gold-level rating is shown in Table 3-67.

Table 3-67. Initial Cost to the Builder for the Gold Single-Family Type D

Green Category Gold Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 114 175

Chapter 6: Resource Efficiency 113 847

Chapter 7: Energy Efficiency 166 13,010

Chapter 8: Water Efficiency 61 525

Chapter 9: Indoor Environmental Quality 141 945

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 610 $16,546

• The annual maintenance cost to achieve the Gold rating is $414 (Appendix A).

• The annual energy operating cost to achieve the Gold rating is $1,211 (Appendix A).

• The annual water operating cost to achieve the Gold rating is $572 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Gold rating is $31,360 (Appendix A).
91

The Gold Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 50-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 5, Akron, Ohio). The 

annual water savings (compared with the Average Daily Per Capita Usage in Gallons, as defined by 

the Handbook of Water Use and Conservation—chapter 8) are approximately a 27-percent reduction 

in water usage (Appendix A—Indoor Water Usage Calculation Table for Akron, Ohio). The energy 

efficiency, IEQ, water efficiency, and building owner education categories have Emerald ratings, 

and the lot design and development category is close to an Emerald rating. Nonetheless, the overall 

green rating is Gold because the total points are less than the Emerald minimum.

The Emerald Rating

To achieve the Emerald rating, we improved the Gold-rated design by meeting the threshold 

chapter requirements and selecting an additional 107 points in green features. The Emerald rating 

requires 697 points; we achieved 704 points by requiring the preservation of natural water and 

drainage features, and developing a stormwater management plan.

To improve resource efficiency, we specified detailed framing plans and optimized building 

dimensions to reduce material cuts, and we added a Frost Protected Shallow Foundation (FPSF) 

under the walkout wall. In addition, all specified siding must not require onsite applied finishing. 

A construction waste management plan and onsite recycling of construction materials were also 

required.

To improve the energy efficiency, we specified R-60 insulation to the attic with raised heel trusses, 

R-10 foam sheathing to the exterior, improved window and door performance, installed a higher 

efficiency furnace, improved the structures infiltration rate further, and balanced the HVAC system.

We improved the water efficiency by installing a rainwater-collection and -distribution system. We 

improved the IEQ by specifying the use of exterior low-VOC adhesives and sealants and adding a 

capillary break on the footing to prevent moisture migration into the foundation wall. Additional 

green-scoring details are in Appendix B. Table 3-68 contains the Emerald rating summary.

CHAPTER 3
92 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-68. Emerald Rating for Single-Family Type D

Green Building Category

Emeralda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Emerald

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 119 126 7 Not 

Applicable

Chapter 6: Resource Efficiency 146 148 2 Met

Chapter 7: Energy Efficiency 120 197 77 Met

Chapter 8: Water Efficiency 60 69 9 Met

Chapter 9: Indoor Environmental 

Quality 140 149 9 Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 12 15 3 Met

Section Total 597 704 107 0

Additional Points 100 — 107 0

Total Points 697 704 — 0

a Emerald Required Points are the minimum green points needed to achieve an Emerald Rating

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Emerald are the green points that exceed the Emerald minimum for each green category

d Point Shortfalls are the number of green points needed to meet the Emerald minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Emerald Cost

The total initial cost to achieve the Emerald-level rating is shown in Table 3-69.

Table 3-69. Initial Cost to the Builder for the Emerald Single-Family Type D

Green Category Emerald Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 126 695

Chapter 6: Resource Efficiency 148 3,916

Chapter 7: Energy Efficiency 197 23,908

Chapter 8: Water Efficiency 69 907

Chapter 9: Indoor Environmental Quality 149 1,061

Chapter 10: Operation, Maintenance, and Building Owner Education 15 1,044

Total 704 $31,530

• The annual maintenance cost to achieve the Emerald rating is $414 (Appendix A).

• The annual energy operating cost to achieve the Emerald rating is $992(Appendix A).

• The annual water operating cost to achieve the Emerald rating is $572 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Emerald rating is $31,360 (Appendix A).
93

The Emerald Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 61-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 5, Akron, Ohio). 

The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, as 

defined by the Handbook of Water Use and Conservation—chapter 8) are approximately a 27-percent 

reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for Akron, Ohio). 

The water usage reduction estimate does not include the water that would be reduced from using 

the rainwater-collection system (instead of municipal water sources).

Overall cost and performance data are provided in Table 3-70. The water utility rates are based 

on Akron, Ohio water supply and sewer meter rates (source: Akron Public Utilities Bureau). We 

base the simple payback periods for energy and water efficiency on the current cost estimates and 

projected savings and do not consider future rate increases, inflation, replacement costs, or other 

conditions over the 30-year evaluation period.

CHAPTER 3
94 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-70. Overall Cost and Performance Data for Single-Family Type D

AMHA

Single-Family Type D

1,908 ft2

Baseline Bronze Silver Gold Emerald

Cost Comparison

Total Initial Green Cost ($) Unknown 2,956 5,000 16,546 31,530

Annual Maintenance Cost ($) 367 367 367 414 414

Annual Energy Operating Cost ($) 1,685 1,612 1,408 1,211 992

Annual Water Usage Cost ($) 620 620 620 572 572

30-Year Lifetime Replacement Cost ($) 13,078 13,078 14,418 29,418 31,360

Incremental Performance Improvement

Energy Efficiency (e-Ratio)

(compare to 2006 IECC) 0.88 0.82 0.69 0.50 0.41

Water Efficiency (%)

(compares to 56.4 gpda) 20.1 20.1 20.1 26.7 26.7

Land and Lot Use (points)

(NGBS Rating)

72

Silver

96

Gold

96

Gold

114

Gold

126

Emerald

Resource Efficiency (points)

(NGBS Rating)

57

Bronze

64

Bronze

86

Silver

113

Gold

148

Emerald

IEQ (points)

(NGBS Rating)

49

Bronze

74

Silver

105

Gold

141

Emerald

149

Emerald

Green Education for Owner (points)

(NGBS Rating)

0

NR

9

Bronze

15

Emerald

15

Emerald

15

Emerald

Simple Payback Periods

Energy Efficiency (years)

(initial energy cost and savings) NA 16 11 27 34

Water Efficiency (years)

(initial water cost and savings) NA 0 0 3 5

a The benchmark for comparison assumes five occupants using 56.4 (gpd) each. The benchmark cost is $766; all projected savings are compared 

with this benchmark.

IEQ = Indoor Environmental Quality; NA = not applicable; NGBS = National Green Building Standard; NR = not required.

3.4.2Cuyahoga Falls, Ohio: Valley View Homes Development

In Ohio, a new 37-unit apartment building consisting of one-bedroom and two-bedroom 

apartments was constructed in an existing neighborhood renovated with HOPE grant funding 

from the U.S. Department of Housing and Development. This urban renewal project was to 

rebuild Valley View Homes Estate, a former public housing project built in 1939 and located in 

Cleveland’s historic Tremont neighborhood. Construction also included new streets to provide 

more efficient pedestrian and vehicular access, and the property was regraded so residents no 

longer had to climb stairs to access the upper part of the development.
95

The project was led by the Cuyahoga Metropolitan Housing Authority (CMHA) and was 

completed in different phases. CMHA worked with the development firm McCormack Baron 

Salazar to rebuild the development using environmentally friendly techniques and innovative site 

planning and design. The newly constructed apartments were designed and built as part of the 

Enterprise Communities Partners’ Green Communities Initiative.

We selected a one-bedroom unit in the Valley View Homes Apartment Building, Cuyahoga Falls, 

Ohio, for the NGBS evaluation process. When considering a multifamily apartment building for 

an NGBS green rating, all individual apartment units must meet the NGBS green-level rating 

requirements for the multifamily apartment building to receive a green building rating. For 

example, if the multifamily apartment building is rated Silver, that means that all individual 

apartment units must have a minimum rating of Silver. To ensure this label is accurate, an 

evaluation of each type of apartment unit is necessary. During our preliminary evaluation of the 

Valley View Homes apartment building, we determined that a one-bedroom unit on the corner 

of the building (with two exterior walls and the roof exposed) would be the worst-case apartment 

unit to model green in terms of the NGBS, so that when this one-bedroom unit meets a certain 

green rating, all other units will be equal or more efficient.

One-Bedroom Apartment Baseline Green Rating

Many green features are included in the original apartment design. In fact, the baseline green 

rating exceeds the minimum total points for a Bronze rating, but falls short of meeting mandatory 

requirements in the areas of energy efficiency, IEQ, and building owner education. In addition, 

the minimum threshold point requirements for energy efficiency, water efficiency, and building 

owner education are not met.

The apartment design was built in accordance with the 2005 Ohio Building Code (OBC) and 2003 

IRC. Green points were achieved for promoting pedestrian activity, and providing for pedestrian 

access to community resources and mass transit systems. A natural resources inventory was 

completed and a plan was implemented to conserve high-priority resources. Development on 

less than 25 percent of steep slopes was avoided, and long-term erosion effects were minimized 

through the design and implementation of terracing, retaining walls, and restabilization 

techniques. A stormwater management plan was developed, construction activities were 

scheduled to minimize soil exposure, and limits of clearing and grading were demarcated on the 

plan. A landscape plan was formulated to restore or enhance natural vegetation cleared during 

construction, and specific types of trees were selected to provide shading. Measures were taken 

to minimize soil disturbance and erosion, protect trees and vegetation during construction, limit 

the use of fertilizer and pesticides, and stockpile topsoil for later use. Points were also awarded for 

density and shared parking (greater than 21 dwelling units per acre).

Resource-efficiency features included a conditioned floor area of 658 ft2

 (less than 1,000 square 

feet); roof trusses, floor trusses, and wall framing at 24 in on center; preassembled roof and floor 

trusses; and stacked stories. Prefinished exterior materials included brick façade, metal siding, and 

vinyl windows. Drip edges were installed, roof drains were specified; and flashing details were 

shown on the plans. Reclaimed materials were used for carpet padding and playground surfaces, 

and biobased materials include kitchen cabinets, OSB, and interior doors and trim. Resourceefficient materials included steel girders, and roof and floor trusses.

CHAPTER 3
96 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The energy-efficient green features included insulation and air sealing in compliance with the 

list of practices in section 703.2, no recessed lighting, an ENERGY STAR-rated dishwasher, and all 

heating and cooling ducts installed within conditioned spaces. The water-efficient green features 

included using an ENERGY STAR dishwasher, installing low-flow showerheads and faucets, and 

minimizing the hot-water pipe runs.

The IEQ green features included using a heat pump air handler in conditioned spaces; specifying 

nonemitting materials (wire shelves); using a building ventilation system (continuous operation 

fans); installing no plumbing distribution lines in exterior walls or unconditioned space(s); and 

avoiding the use of fireplace(s), solid-fuel-burning appliances, and garages. Green points were also 

awarded for training owners and occupants on equipment operation, control systems, and green 

building practices.

Although the original apartment design obtained a total of 258 green points, the overall green 

rating falls short of achieving the Bronze-level rating because it lacks several mandatory practices 

and threshold requirements in energy and water efficiency. The design must implement all 

mandatory practices and meet the threshold requirements for all green categories to achieve a 

rating. Table 3-71 summarizes the baseline rating and identifies where the design exceeded and 

fell short of the Bronze rating. Additional green-scoring details are in Appendix B.

Table 3-71. Baseline Rating for One-Bedroom Apartment

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 96 57 — Not

Applicable

Chapter 6: Resource Efficiency 45 81 36 — Met

Chapter 7: Energy Efficiency 30 19 — 11 Not Met

Chapter 8: Water Efficiency 14 10 — 4 Met

Chapter 9: Indoor Environmental 

Quality 36 46 10 — Not Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 6 — 2 Not Met

Section Total 172 258 103 17

Additional Points 50 — 103 —

Total Points 222 258 — 17

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the One-Bedroom Apt Original Design.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

• The annual maintenance cost to achieve the base rating is $451 (Appendix A).

• The annual energy operating cost to achieve the base rating is $1,123 (Appendix A).

• The annual water operating cost to achieve the base rating is $534 (Appendix A).

• The 30-year lifetime replacement cost to achieve the base rating is $14,848 (Appendix A).
97

One-Bedroom Apartment Incremental Green Ratings

The Bronze Rating

To achieve the Bronze rating, the remaining mandatory green requirements were met. These 

requirements included conducting a third-party review to verify design and compliance with 

the energy section; sizing the HVAC equipment to meet the ACCA Manual J; sealing ducts with 

tape, mastic, or an approved system to reduce leakage; specifying proper air sealing of exterior 

architectural features; and specifying the exhaust rate of the bathroom fans.

All chapter thresholds and mandatory items were achieved, including an additional 145 points. 

The Bronze rating requires only 222 points, but we were able to achieve 317 points simply by 

implementing the mandatory items not met at the baseline, along with several green practices to 

meet the threshold point requirements in several green categories.

To improve energy efficiency, the design was improved by 15 percent (using energy modeling). 

The original baseline design actually represents a 4-percent reduction in energy usage when 

compared with 2006 IECC; therefore, the baseline energy performance falls short of the Bronze 

rating, which is based on a 15-percent reduction in energy usage (as per the NGBS performance 

path method of determining energy efficiency). To achieve the greater energy efficiency, windows, 

ductwork leakage, and insulation were improved. ENERGY STAR bulbs or fixtures were specified 

for at least 50 percent of all the fixtures installed, and sizing the heating and cooling equipment 

according to Manual S was added to the specifications. In addition, the water efficiency was 

improved by specifying that all water closets have flush rates of 1.28 gallons or less.

The largest one-time cost of going green is the initial investment in developing green 

documentation and the homeowner’s binder templates. For this study, we estimated the 

going-green cost at $5,64027 (this cost will be the case at any rated level). Along with the cost 

of developing green documentation, the largest cost increase is to meet the energy efficient 

requirements. Nonetheless, additional green-scoring details are in Appendix B. Table 3-72 

contains the Bronze rating summary.

CHAPTER 3
98 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-72. Bronze Rating for One-Bedroom Apartment

Green Building Category

Bronzea

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Bronze

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 39 101 62 — Not 

Applicable

Chapter 6: Resource Efficiency 45 81 36 — Met

Chapter 7: Energy Efficiency 30 51 21 — Met

Chapter 8: Water Efficiency 14 22 8 — Met

Chapter 9: Indoor Environmental 

Quality 36 46 10 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 8 16 8 — Met

Section Total 172 317 145 0

Additional Points 50 — 145 0

Total Points 222 317 — 0

a Bronze Required Points are the minimum green points needed to achieve a Bronze Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Bronze are the green points that exceed the Bronze minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Bronze minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Bronze Cost

The total initial cost to achieve the Bronze-level rating is shown in Table 3-73.

Table 3-73. Initial Cost to the Builder for the Bronze One-Bedroom Apartment

Green Category Bronze Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 101 0

Chapter 6: Resource Efficiency 81 0

Chapter 7: Energy Efficiency 51 2,882

Chapter 8: Water Efficiency 22 175

Chapter 9: Indoor Environmental Quality 46 0

Chapter 10: Operation, Maintenance, and Building Owner Education 16 250

Total 317 $3,307

• The annual maintenance cost to achieve the Bronze rating is $451 (Appendix A).

• The annual energy operating cost to achieve the Bronze rating is $981 (Appendix A).

• The annual water operating cost to achieve the Bronze rating is $497 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Bronze rating is $16,030 (Appendix A).
99

The Bronze Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 15-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 5A, Cuyahoga Falls, 

Ohio). The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, 

as defined by the Handbook of Water Use and Conservation—chapter 8) are 19-percent reduction in 

water usage (Appendix A—Indoor Water Usage Calculation Table for Cuyahoga Falls, Ohio). The 

resource efficiency category has a Silver rating, and the lot design and development category has a 

low-level Gold rating. The building owner education category has an Emerald rating. Nonetheless, 

the overall green rating is Bronze because the total points are less than the Silver minimum.

The Silver Rating

To achieve the Silver rating, we improved the Bronze-rated design by meeting the threshold chapter 

requirements and selecting an additional 141 points in green features. The Silver rating requires 

406 points; we achieved 447 points by specifying interior foundation perimeter drains, requiring 

the purchase of OSB or carpeting that is produced from a factory that uses one-third of its process 

energy from renewable sources, and selecting three types of indigenous construction materials.

To improve energy efficiency, we required a change in fuel source (from electric to natural gas), 

specified one-inch foam sheathing, improved window performance, upgraded to a 14 SEER air 

conditioner, installed a highly efficient, 96-percent AFUE direct-vent gas furnace, and a 65-percent 

AFUE direct-vent gas water heater. Specifications were added to design the duct system according 

to Manual D, require the HVAC contractor and service technician to be certified by a national 

recognized program, and specify the use of an alternate refrigerant containing no HCFCs. We 

also specified a third-party inspection of the insulation and ductwork and verification of the 

envelope and duct leakage.

To improve water efficiency we eliminated the pop-up irrigation system originally specified. 

IEQ improvements were made by specifying the installation of a direct-vent furnace and water 

heater, MERV 8 filters, and HVAC registers and boots. In addition, several nonurea formaldehyde 

products were specified, including interior doors, trim, and cabinets, along with low-emission 

carpet, padding, and adhesives. The kitchen and bath cabinets were required to meet KCMA ESP 

01 or equivalent, the moisture content of lumber and subfloors were specified at a minimum level, 

and living space contaminants were reduced by requiring the sealing of penetrations (top plates, 

HVAC register boots, and recessed can lights). Finally, carbon monoxide detectors were specified, 

along with nonsmoking areas in all interior common areas. Additional green-scoring details are 

in Appendix B. Table 3-74 contains the Silver rating summary.

CHAPTER 3
100 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-74. Silver Rating for One-Bedroom Apartment

Green Building Category

Silvera

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Silver

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 66 101 35 — Not 

Applicable

Chapter 6: Resource Efficiency 79 93 14 — Met

Chapter 7: Energy Efficiency 60 109 49 — Met

Chapter 8: Water Efficiency 26 37 11 — Met

Chapter 9: Indoor Environmental 

Quality 65 91 26 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 10 16 6 — Met

Section Total 306 447 141 0

Additional Points 100 — 141 0

Total Points 406 447 — 0

a Silver Required Points are the minimum green points needed to achieve a Silver Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Silver are the green points that exceed the Silver minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Silver minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Silver Cost

The total initial cost to achieve the Silver-level rating is shown in Table 3-75.

Table 3-75. Initial Cost to the Builder for the Silver One-Bedroom Apartment

Green Category Silver Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 101 0

Chapter 6: Resource Efficiency 93 55

Chapter 7: Energy Efficiency 104 5,122

Chapter 8: Water Efficiency 37 98

Chapter 9: Indoor Environmental Quality 91 0

Chapter 10: Operation, Maintenance, and Building Owner Education 16 250

Total 442 $5,525

• The annual maintenance cost to achieve the Silver rating is $451 (Appendix A).

• The annual energy operating cost to achieve the Silver rating is $875 (Appendix A).

• The annual water operating cost to achieve the Silver rating is $497 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Silver rating is $16,617 (Appendix A).
101

The Silver Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 31-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 5A, Cuyahoga Falls, 

Ohio). The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, 

as defined by the Handbook of Water Use and Conservation—chapter 8) are a 19-percent reduction in 

water usage (Appendix A—Indoor Water Usage Calculation Table for Cuyahoga Falls, Ohio). The 

energy efficiency and lot design and development categories have a low-level Gold rating, and the 

building owner education category has an Emerald rating. Nonetheless, the overall green rating is 

Silver because the total points are less than the Gold minimum.

The Gold Rating

To achieve the Gold rating, we improved the Silver-rated design by meeting the threshold chapter 

requirements and selecting an additional 120 points in green features. The Gold rating requires 

558 points; we achieved 578 points by specifying the preservation of natural water and drainage 

features, limiting turf areas, selecting regionally appropriate trees and vegetation, and selecting 

plants with similar watering needs. The utilities were required to be installed using tunneling 

and low ground-pressure equipment.

To improve resource efficiency, we specified extended roof overhangs (parapet), a recycling 

area in the trash rooms, and the sorting and reuse of scrap building material. In addition, four 

types of construction materials with recycled content (carpet, padding, gypsum board, and 

cellulose insulation [in lieu of fiberglass]) were specified and four materials (drywall, copper wire, 

cardboard, and wood) were required to be recycled during construction.

To improve energy efficiency, we specified R-75 insulation in the ceiling, switched to a 95-percent 

AFUE high-efficiency boiler for heating and domestic water, upgraded to a closed-loop solar hotwater system with additional hydronic controls, reduced the structure’s infiltration rate and duct 

leakage further, and installed a 14 SEER air conditioning system.

To improve water efficiency, rainwater was collected and used. The IEQ was improved by 

specifying low-VOC adhesives, sealants, and caulks; specifying no-urea formaldehyde kitchen 

and bath cabinets; and installing insulation products in walls, floors, ceilings, and ductwork 

that meet third-party certification guidelines for formaldehyde emissions. In addition, exterior 

grilles or mats were specified at entranceways to control pollutants. The bath and laundry fans 

were specified with an automatic timer and humidistat, and all the exhaust fans were required 

to be inspected for proper airflow. Additional green-scoring details are in Appendix B. Table 3-76 

contains the Gold rating summary.

CHAPTER 3
102 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-76. Gold Rating for One-Bedroom Apartment

Green Building Category

Golda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Gold

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 93 129 36 — Not 

Applicable

Chapter 6: Resource Efficiency 113 117 4 — Met

Chapter 7: Energy Efficiency 100 155 55 — Met

Chapter 8: Water Efficiency 41 43 2 — Met

Chapter 9: Indoor Environmental 

Quality 100 118 18 — Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 11 16 5 — Met

Section Total 458 578 120 0

Additional Points 100 — 120 0

Total Points 558 578 — 0

a

 Gold Required Points are the minimum green points needed to achieve a Gold Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c

 Additional Claimed Points Above Gold are the green points that exceed the Gold minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Gold minimum for each green category.

e

 Mandatory Status identifies whether mandatory requirements were met for each green category.

The Gold Cost

The total initial cost to achieve the Gold-level rating is shown in Table 3-77.

Table 3-77. Initial Cost to the Builder for the Gold One-Bedroom Apartment

Green Category Gold Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 129 0

Chapter 6: Resource Efficiency 117 384

Chapter 7: Energy Efficiency 155 7,639

Chapter 8: Water Efficiency 43 162

Chapter 9: Indoor Environmental Quality 118 395

Chapter 10: Operation, Maintenance, and Building Owner Education 16 250

Total 578 $8,830

• The annual maintenance cost to achieve the Gold rating is $490 (Appendix A).

• The annual energy operating cost to achieve the Gold rating is $727 (Appendix A).

• The annual water operating cost to achieve the Gold rating is $497 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Gold rating is $24,596 (Appendix A).
103

The Gold Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 52-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 5A, Cuyahoga Falls, 

Ohio). The annual water savings (compared with the Average Daily Per Capita Usage in Gallons, 

as defined by the Handbook of Water Use and Conservation—chapter 8) are a 19-percent reduction 

in water usage (Appendix A—Indoor Water Usage Calculation Table for Cuyahoga Falls, Ohio). 

The energy efficiency, lot design and development, and builder-owner education categories have 

Emerald ratings. Nonetheless, the overall green rating is Gold because the total points are less 

than the Gold minimum.

The Emerald Rating

To achieve the Emerald rating, we improved the Gold-rated design by meeting the threshold 

chapter requirements and selecting an additional 115 points in green features. The Emerald rating 

requires 697 points; we achieved 712 points by requiring the use of a knowledgeable team with 

respect to green lot design, preparation, and development; providing basic training in tree and 

other natural resource protection to the onsite supervisor; and requiring onsite supervision and 

coordination during clearing, grading, trenching, paving, and utility installation. In addition, 

the contractors were required to avoid and mitigate damage to existing trees and root zones 

during construction. The heat island effect was to be minimized by incorporating light-colored 

hardscaping or shading.

To improve resource efficiency, we specified detailed framing plans to optimize building 

dimensions and reduce material cuts. A construction waste management plan was developed and 

implemented, along with an onsite construction materials recycling program for onsite use.

To improve energy efficiency, we specified more surface area to the solar hot-water collector, R-10 

foam sheathing, and a 16 SEER air conditioning system. We also specified the use of return ducts 

or transfer grilles in every room with a door, along with a balanced HVAC system that is verified 

by using a flow hood or other acceptable flow measurement tool.

The water efficiency was improved by specifying an ENERGY STAR washing machine with a 

water factor of 6.0, a low-volume drip irrigation system with separate zones for turf and bedding 

areas, and an ET-based irrigation controller with a rain sensor. Rainwater must be collected and 

distributed by gravity or a renewable energy source. In addition, we specified fixtures with an 

automatic shutoff for domestic water use.

The IEQ was improved by specifying low-emission hard-surface flooring (kitchen and bath), 

gypsum board, and site applied interior products certified by a third-party program. In addition, 

a capillary break was specified on the footers to prevent moisture migration into the foundation 

wall. Additional green-scoring details are in Appendix B. Table 3-78 contains the Emerald rating 

summary.

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104 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-78. Emerald Rating for One-Bedroom Apartment

Green Building Category

Emeralda

Required 

Points

Claimedb

Points

Additionalc

Claimed Points 

Above Emerald

Pointd

Shortfall

Mandatorye

Status

Chapter 5: Lot Design, Preparation, 

and Development 119 153 34 Not 

Applicable

Chapter 6: Resource Efficiency 146 147 1 Met

Chapter 7: Energy Efficiency 120 191 71 Met

Chapter 8: Water Efficiency 60 61 1 Met

Chapter 9: Indoor Environmental 

Quality 140 144 4 Met

Chapter 10: Operation, Maintenance, 

and Building Owner Education 12 16 4 Met

Section Total 597 712 115 0

Additional Points 100 — 115 0

Total Points 697 712 — 0

a Emerald Required Points are the minimum green points needed to achieve an Emerald Rating.

b Claimed Points are the green points we identified (and claimed) based on the Green Improvements.

c Additional Claimed Points Above Emerald are the green points that exceed the Emerald minimum for each green category.

d Point Shortfalls are the number of green points needed to meet the Emerald minimum for each green category.

e Mandatory Status identifies whether mandatory requirements were met for each green category.

The Emerald Cost

The total initial cost to achieve the Emerald-level rating is shown in Table 3-79.

Table 3-79. Initial Cost to the Builder for the Emerald One-Bedroom Apartment

Green Category Emerald Points Cost ($)

Chapter 5: Lot Design, Preparation, and Development 153 1,378

Chapter 6: Resource Efficiency 147 4,493

Chapter 7: Energy Efficiency 191 8,825

Chapter 8: Water Efficiency 61 2,227

Chapter 9: Indoor Environmental Quality 144 4,345

Chapter 10: Operation, Maintenance, and Building Owner Education 16 250

Total 712 $21,518

• The annual maintenance cost to achieve the Emerald rating is $614 (Appendix A).

• The annual energy operating cost to achieve the Emerald rating is $703 (Appendix A).

• The annual water operating cost to achieve the Emerald rating is $428 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Emerald rating is $30,626 (Appendix A).
105

The Emerald Benefits

The annual energy savings (compared with 2006 IECC—chapter 7) are approximately a 60-percent 

reduction in energy usage (Appendix C—Summary Data for Climate Zone 5A, Cuyahoga 

Falls, Ohio). The annual water savings (compared with the Average Daily Per Capita Usage in 

Gallons, as defined by the Handbook of Water Use and Conservation—chapter 8) are approximately 

a 31-percent reduction in water usage (Appendix A—Indoor Water Usage Calculation Table for 

Cuyahoga Fall, Ohio). The water usage reduction estimate does not include the water that would 

be reduced from using the rainwater-collection system (instead of municipal water sources).

Overall cost and performance data are provided in Table 3-80. The water utility rates are based 

on Stow, Ohio water supply and sewer meter rates are based on Akron, Ohio (sources: Stow, 

Ohio Water Department and Akron Public Utilities Bureau). We base the simple payback periods 

for energy and water efficiency on the current cost estimates and projected savings and do not 

consider future rate increases, inflation, replacement costs, or other conditions over the 30-year 

evaluation period.

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106 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-80. Overall Cost and Performance Data for One-Bedroom Apartment

CMHA

One-Bedroom Apartment

658 ft2

Baseline Bronze Silver Gold Emerald

Cost Comparison

Total Initial Green Cost ($) Unknown $3,307 $5,525 $8,830 $21,518

Annual Maintenance Cost ($) $451 $451 $451 $490 $614

Annual Energy Operating Cost ($) $1,123 $981 $875 $727 $703

Annual Water Usage Cost ($) $534 $497 $497 $497 $428

30-Year Lifetime Replacement Cost ($) $14,848 $16,030 $16,617 $24,596 $30,626

Incremental Performance Improvement

Energy Efficiency (e-Ratio)

(compare to 2006 IECC) 0.96 0.84 0.70 0.49 0.40

Water Efficiency (%)

(compares to 56.4 gpda) 12.5 19.0 19.0 19.0 30.9

Land/Lot Use (points)

(NGBS Rating)

96

Gold

101

Gold

101

Gold

129

Emerald

153

Emerald

Resource Efficiency (points)

(NGBS Rating)

81

Silver

81

Silver

93

Silver

117

Gold

147

Emerald

IEQ (points)

(NGBS Rating)

46

Bronze

46

Bronze

91

Silver

118

Gold

144

Emerald

Green Education for Owner (points)

(NGBS Rating)

6

NR

16

Emerald

16

Emerald

16

Emerald

16

Emerald

Simple Payback Periods

Energy Efficiency (years)

(initial energy cost/savings) NA 20 21 19 21

Water Efficiency (years)

(initial water cost/savings) NA 2 1 2 13

a The benchmark for comparison assumes two occupants using 56.4 (gpd) each. The benchmark cost is $606; all projected savings are compared 

with this benchmark.

IEQ = Indoor Environmental Quality; NA = not applicable; NGBS = National Green Building Standard; NR = not required.

3.5 Green Remodeling Using the National Green Building 

Standard

For our remodeling example, we selected a residential structure that was built on or before 

December 31, 1979, so that we can apply the Green Remodel Path28 method of green renovation. 

First, the baseline performance must be defined through a comprehensive audit to capture the 

energy and water usage, along with an indoor environmental quality assessment. After the 

baseline is established, renovations are identified that will achieve the level of green performance 

desired, and this expected performance is verified by comparing actual utility bills before and 

after the renovation. If the utility bills confirm the necessary improvements, a green certificate is 

issued in accordance with the NGBS.
107

3.5.1 Montgomery County, Maryland—The Multifamily Example

Montgomery County, Maryland, is located in climate zone 4, a predominantly cooling, moist 

climate with 9,504 cooling degree hours (CDH) and 4,714 heating degree days (HDD).

An eight unit multifamily apartment building was selected in Silver Spring, Maryland, for 

the NGBS Green Remodel Path evaluation. The multifamily unit is eligible for weatherization 

renovations by the Montgomery County Department of Housing and Community Affairs and 

is also eligible for participation in the U.S. Department of Housing and Urban Development’s 

(HUD’s) HOME Program.

The four-story apartment building has two apartment units on each floor. Each apartment unit 

has its own metering system for gas, electric, and water. In addition, each unit also has its own 

individual domestic hot-water and HVAC systems. The building, which was built in the 1950s, was 

not originally built using green or sustainable practices. In recent years, the building was modestly 

repaired and maintained, but did not undergo any major repairs, which makes the apartment 

building an excellent candidate for a renovation based on the NGBS Green Remodel Path.

The green evaluation focused on four of the eight apartment units. A team of three field 

evaluators from the Research Center visited the apartment building on February 18, 2010. During 

this visit, the evaluators performed a comprehensive audit, which included air infiltration 

measurements on the apartment units and the existing HVAC systems, water flow measurements 

to establish flow rates for all plumbing fixtures, an inspection of the IEQ conditions, and an 

inventory of the apartment building features (for energy modeling purposes). The four apartment 

units were identified as Units #1 through #4 (starting on the first floor up to the fourth floor); 

the first floor unit is partially underground. All units face the front (or main entrance) of the 

apartment building as shown in Photo 3-1.

Photo 3-1. Multifamily Demonstration for NGBS Green Remodel Path

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108 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

To actually achieve an NGBS Green Remodeling certification for the apartment building in 

this case study, all eight units would need to be renovated to the same level of performance 

improvement as per Table 1-3, and the improvements would need to be verified independently by 

comparing prerenovation water and energy bills to the new postrenovation water and energy bills.

The Multifamily Example—Baseline Existing Condition

The IEQ requirements must be met for all green rating levels. Therefore, the field evaluators 

established the following IEQ conditions.

• Section 901.1.1 does not apply to Unit #2 because the space-heating and water-heating 

equipment is not located in the apartment. Unit #3 does apply, but the unit is power vented, 

so the requirement is met. For Units #1 and #4, additional work is needed for the units to be 

fully compliant with this IEQ requirement.

• Section 901.5 applies only if one is replacing existing carpets. For Units #1, #2, and #4, the 

flooring is hardwood or vinyl and no carpet exists; for Unit #3, carpet does exist and, if it 

were replaced, the cost would be approximately $1.50/ft2

 (which would equal approximately 

$360.00 for the floor area that is carpeted in Unit #3).

• Section 902.1 is required because the kitchen and bathroom need exhaust in all four units. 

Clothes dryers do not exist in these apartment units.

• Section 902.4(2) can be met at a maximum of 2-hr time (that is, using an HVAC technician) 

and minor material cost to replace filters and service coils.

• Section 904.3(1) does not apply because gas dryers are not in use.

• The total cost burden for each apartment unit (that is, Unit #1 through #4) is summarized 

during the incremental green rating process. A general cost estimate can be developed, if the 

building owner or local housing authority knows the IEQ conditions of the housing stock that 

are older than December 31, 1979.

Existing Apartment Unit Conditions

Unit #1 is a one-bedroom apartment unit that is approximately 485 ft2 of conditioned living space. 

The existing condition must be improved by 20 percent to achieve a Bronze rating. Table 3-81 

contains the unit’s baseline existing conditions.

Table 3-81. Unit #1—Baseline Existing Conditions

Green Remodeling Path Baselinea

Existing Condition

Energy Efficiency (e-Ratio)b 2.15

Water Efficiency (gpd)c 51.4

IEQ Requirementsd Not Met

a The Baseline Existing Condition for the Apartment Unit based on actual field evaluations. b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50ft2

.

IEQ = Indoor Environmental Quality.
109

• The annual maintenance cost to achieve the base condition is $359 (Appendix A).

• The annual energy operating cost to achieve the base rating is $1,959 (Appendix A).

• The annual water operating cost to achieve the base rating is $318 (Appendix A).

• The 30-year lifetime replacement cost to achieve the base condition is $6,800 (Appendix A).

Unit #2 is a two-bedroom apartment unit that is approximately 820 ft2

 of conditioned living space. 

The existing condition must be improved by 20 percent to achieve a Bronze rating. Table 3-82 

contains the unit’s baseline existing conditions.

Table 3-82. Unit #2—Baseline Existing Conditions

Green Remodeling Path Baselinea

Existing Condition

Energy Efficiency (e-Ratio)b 1.51

Water Efficiency (gpd)c 43.3

IEQ Requirementsd Not Met

a The Baseline Existing Condition for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50ft2

.

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the base condition is $359 (Appendix A).

• The annual energy operating cost to achieve the base rating is $1,910 (Appendix A).

• The annual water operating cost to achieve the base rating is $391 (Appendix A).

• The 30-year lifetime replacement cost to achieve the base condition is $8,672 (Appendix A).

Unit #3 is a two-bedroom apartment unit that is approximately 820 ft2

 of conditioned living space. 

The existing condition must be improved by 20 percent to achieve a Bronze rating. Table 3-83 

contains the unit’s baseline existing conditions.

Table 3-83. Unit #3—Baseline Existing Conditions

Green Remodeling Path

Baselinea

Existing Condition

Energy Efficiency (e-Ratio)b 1.64

Water Efficiency (gpd)c 45.7

IEQ Requirementsd Not Met

a The Baseline Existing Condition for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50ft2

.

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the base condition is $359 (Appendix A).

• The annual energy operating cost to achieve the base rating is $2,152 (Appendix A).

• The annual water operating cost to achieve the base rating is $410 (Appendix A).

• The 30-year lifetime replacement cost to achieve the base condition is $7,183 (Appendix A).

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110 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Unit #4 is a two-bedroom apartment unit that is approximately 820 ft2 of conditioned living space. 

The existing condition must be improved by 20 percent to achieve a Bronze rating. Table 3-84 

contains the unit’s baseline existing conditions.

Table 3-84. Unit #4—Baseline Existing Conditions

Green Remodeling Path Baselinea

Existing Condition

Energy Efficiency (e-Ratio)b 1.95

Water Efficiency (gpd)c 53.2

IEQ Requirementsd Not Met

a The Baseline Existing Condition for the Apartment Unit based on actual field evaluations. b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the base condition is $359 (Appendix A).

• The annual energy operating cost to achieve the base rating is $2,288 (Appendix A).

• The annual water operating cost to achieve the base rating is $529 (Appendix A).

• The 30-year lifetime replacement cost to achieve the base condition is $6,800 (Appendix A).

The Multifamily Example—Incremental Green Ratings

The Bronze Rating and Cost

Although each existing apartment unit has a different baseline condition, the approach to 

improving the unit is generally the same. In terms of improving energy efficiency, we recommend 

improving the building enclosure features first, then upgrading the equipment. Typically, one can 

expect to improve building tightness by decreasing air infiltration by approximately 30 percent in 

an older residential dwelling. This is a reasonable target, although a greater level of improvement 

might be possible depending upon the location of the leakage. Multifamily structures have the 

added challenge of identifying whether the leakage is between adjacent units or to the outdoors. 

For our study, we assumed that all measured building enclosure leakage was to the outdoors, 

which is the worst case scenario in terms of energy modeling. Appendix C contains energy 

modeling details.

To improve water conservation, we recommended replacing old plumbing fixtures first, because 

they are relatively inexpensive to replace and tend to have large water usage rates. After 

addressing these affordable items, we recommended focusing on upgrading equipment and 

appliances. Appendix A contains water savings details.

Because the IEQ is a mandatory list of requirements for any green rating, the approach is very 

straightforward, but highly dependent on the condition of the individual unit. We observed minor 

differences within each apartment unit (in terms of IEQ), but generally the required renovations 

and repairs were similar. Appendix B contains green modeling details.
111

Unit #1 is a one-bedroom apartment unit that is approximately 485 ft2 of conditioned living space. 

The Bronze energy improvements include replacing doors, caulking and weatherizing the unit, 

replacing ductwork, and installing a programmable thermostat. For water-efficiency improvements, 

the bathroom fixtures should be upgraded. Because the mechanical room is adjacent to the Unit #1 

apartment, we recommend some additional sealing between the apartment and maintenance room, 

or replacing equipment for IEQ. The unit also requires installing of bathroom and kitchen fans and 

cleaning and servicing the HVAC equipment. Table 3-85 contains the Bronze rating conditions and 

Table 3-86 contains the total initial cost to achieve the Bronze-level rating.

Table 3-85. Unit #1—Bronze Green Remodel Rating

Green Remodeling Path Bronzea

Rating Condition

Energy Efficiency (e-Ratio)b 1.67

Water Efficiency (gpd)c 40

IEQ Requirementsd Met

a

 The Bronze Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c

 gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation.

d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2.

IEQ = Indoor Environmental Quality.

Table 3-86. Unit #1—Initial Cost to the Builder for Bronze Green Remodeling

Green Category Bronze Improvement Cost ($)

Energy Efficiency (e-Ratio) 21% 1,387

Water Efficiency (gpd) 23% 131

IEQ Requirements All met 981

Total Meets Bronze $2,499

The Bronze Rating for the Apartment Unit based on actual field evaluations. 

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data). 

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Bronze rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Bronze rating is $1,713 (Appendix A).

• The annual water operating cost to achieve the Bronze rating is $255 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Bronze rating is $6,800 (Appendix A).

Unit #2 is a two-bedroom apartment unit that is approximately 820 ft2 of conditioned living space. 

The Bronze energy improvements include caulking/weatherizing the unit, replacing ductwork, 

upgrading the water heater, and installing a programmable thermostat. For water-efficiency 

improvements, the bathroom fixtures and the washing machine should be upgraded. The unit 

also requires installing of bathroom and kitchen fans and cleaning and servicing the HVAC 

equipment. Table 3-87 contains the Bronze rating conditions and Table 3-88 contains the total 

initial cost to achieve the Bronze-level rating.

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112 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-87. Unit #2—Bronze Green Remodel Rating

Green Remodeling Path Bronzea

Rating Condition

Energy Efficiency (e-Ratio)b 1.19

Water Efficiency (gpd)c 32

IEQ Requirementsd Met

a

 The Bronze Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c

 gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation.

d The assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2.

IEQ = Indoor Environmental Quality.

Table 3-88. Unit #2—Initial Cost to the Builder for Bronze Green Remodeling

Green Category Bronze Improvement Cost ($)

Energy Efficiency (e-Ratio) 22% 1,772

Water Efficiency (gpd) 26% 390

IEQ Requirements All met 590

Total Meets Bronze $2,752

The Bronze Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Bronze rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Bronze rating is $1,689 (Appendix A).

• The annual water operating cost to achieve the Bronze rating is $301 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Bronze rating is $8,672 (Appendix A).

Unit #3 is a two-bedroom apartment unit that is approximately 820 ft2

 of conditioned living 

space. The Bronze energy improvements include caulking/weatherizing the unit, replacing 

ductwork, upgrading the water heater, and installing a programmable thermostat. For waterefficiency improvements, the bathroom fixtures and washing machine should be upgraded. The 

unit requires installing bathroom and kitchen fans. An option would be to remove carpet so that 

hardwood floor is exposed, and the HVAC equipment must be cleaned and serviced. Table 3-89 

contains the Bronze rating conditions and Table 3-90 contains the total initial cost to achieve the 

Bronze-level rating.
113

Table 3-89. Unit #3—Bronze Green Remodel Rating

Green Remodeling Path Bronzea

Rating Condition

Energy Efficiency (e-Ratio)b 1.29

Water Efficiency (gpd)c 34

IEQ Requirementsd Met

a

 The Bronze Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c

 gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation.

d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2.

IEQ = Indoor Environmental Quality.

Table 3-90. Unit #3—Initial Cost to the Builder for Bronze Green Remodeling

Green Category Bronze Improvement Cost ($)

Energy Efficiency (e-Ratio) 21% 1,922

Water Efficiency (gpd) 26% 390

IEQ Requirements All met 644

Total Meets Bronze $2,956

The Bronze Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Bronze rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Bronze rating is $1,862 (Appendix A).

• The annual water operating cost to achieve the Bronze rating is $315 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Bronze rating is $7,549 (Appendix A).

Unit #4 is a two-bedroom apartment unit that is approximately 820 ft2

 of conditioned living space. 

The Bronze energy improvements include caulking/weatherizing the unit, replacing ductwork, 

upgrading the water heater, and installing a programmable thermostat. For water-efficiency 

improvements, the bathroom fixtures and toilet should be upgraded. The unit also requires 

installing bathroom and kitchen fans and cleaning and servicing the HVAC equipment. Table 3-91 

contains the Bronze rating conditions and Table 3-92 contains the total initial cost to achieve the 

Bronze-level rating.

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114 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-91. Unit #4—Bronze Green Remodel Rating

Green Remodeling Path Bronzea

Rating Condition

Energy Efficiency (e-Ratio)b 1.55

Water Efficiency (gpd)c 40

IEQ Requirementsd Met

a The Bronze Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

Table 3-92. Unit #4—Initial Cost to the Builder for Bronze Green Remodeling

Green Category Bronze Improvement Cost ($)

Energy Efficiency (e-Ratio) 20% 1,772

Water Efficiency (gpd) 26% 335

IEQ Requirements All met 786

Total Meets Bronze $2,893

The Bronze Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Bronze rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Bronze rating is $1,989 (Appendix A).

• The annual water operating cost to achieve the Bronze rating is $403 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Bronze rating is $6,950 (Appendix A).

The Silver Rating and Cost

All IEQ improvements are maintained as previously defined, but the energy- and water-efficiency 

performance is improved to 34 percent (by enhancing the Bronze-level renovations).

Unit #1 retains all Bronze-level energy improvements, but upgrades the water heater to a highefficiency tankless water heater. To improve water efficiency, the kitchen faucet is upgraded. Table 

3-93 contains the Silver rating conditions and Table 3-94 contains the total initial cost to achieve 

the Silver-level rating.
115

Table 3-93. Unit #1—Silver Green Remodel Rating

Green Remodeling Path Silvera

Rating Condition

Energy Efficiency (e-Ratio)b 1.2

Water Efficiency (gpd)c 34

IEQ Requirementsd Met

a The Silver Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

Table 3-94. Unit #1—Initial Cost to the Builder for Silver Green Remodeling

Green Category Silver Improvement Cost ($)

Energy Efficiency (e-Ratio) 40% 2,787

Water Efficiency (gpd) 34% 183

IEQ Requirements All met 981

Total Meets Silver $3,951

The Silver Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Silver rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Silver rating is $1,492 (Appendix A).

• The annual water operating cost to achieve the Silver rating is $225 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Silver rating is $8,100 (Appendix A).

Unit #2 retains all Bronze-level energy improvements, but upgrades the water heater to a highefficiency tankless water heater. To improve water efficiency, the kitchen faucet and washing 

machine are upgraded. Table 3-95 contains the Silver rating conditions and Table 3-96 contains the 

total initial cost to achieve the Silver-level rating.

Table 3-95. Unit #2—Silver Green Remodel Rating

Green Remodeling Path Silvera

Rating Condition

Energy Efficiency (e-Ratio)b 0.93

Water Efficiency (gpd)c 27

IEQ Requirementsd Met

a The Silver Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

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116 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-96. Unit #2—Initial Cost to the Builder for Silver Green Remodeling

Green Category Silver Improvement Cost ($)

Energy Efficiency (e-Ratio) 36% 2,700

Water Efficiency (gpd) 37% 530

IEQ Requirements All met 590

Total Meets Silver $3,820

The Silver Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Silver rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Silver rating is $1,519 (Appendix A).

• The annual water operating cost to achieve the Silver rating is $262 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Silver rating is $11,928 (Appendix A).

Unit #3 retains all Bronze-level energy improvements, but upgrades the water heater to a highefficiency tankless water heater, and the cooling system to a 13 SEER unit. To improve water 

efficiency, the kitchen faucet is upgraded. Table 3-97 contains the Silver rating conditions and 

Table 3-98 contains the total initial cost to achieve the Silver-level rating.

Table 3-97. Unit #3—Silver Green Remodel Rating

Green Remodeling Path Silvera

Rating Condition

Energy Efficiency (e-Ratio)b 1.04

Water Efficiency (gpd)c 27

IEQ Requirementsd Met

a The Silver Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

Table 3-98. Unit #3—Initial Cost to the Builder for Silver Green Remodeling

Green Category Silver Improvement Cost ($)

Energy Efficiency (e-Ratio) 35% 4,051

Water Efficiency (gpd) 42% 442

IEQ Requirements All met 644

Total Meets Silver $5,137

The Silver Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.
117

• The annual maintenance cost to achieve the Silver rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Silver rating is $1,678 (Appendix A).

• The annual water operating cost to achieve the Silver rating is $256 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Silver rating is $8,492 (Appendix A).

Unit #4 retains all Bronze-level energy improvements, but upgrades the water heater to a highefficiency tankless water heater, and the cooling system to a 13 SEER unit. To improve water 

efficiency, the bathroom and kitchen fixtures are upgraded. Table 3-99 contains the Silver rating 

conditions and Table 3-100 contains the total initial cost to achieve the Silver-level rating.

Table 3-99. Unit #4—Silver Green Remodel Rating

Green Remodeling Path Silvera

Rating Condition

Energy Efficiency (e-Ratio)b 1.23

Water Efficiency (gpd)c 33

IEQ Requirementsd Met

a The Silver Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

Table 3-100. Unit #4—Initial Cost to the Builder for Silver Green Remodeling

Green Category Silver Improvement Cost ($)

Energy Efficiency (e-Ratio) 35% 4,051

Water Efficiency (gpd) 39% 439

IEQ Requirements All met 786

Total Meets Silver $5,276

The Silver Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Silver rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Silver rating is $1,766 (Appendix A).

• The annual water operating cost to achieve the Silver rating is $340 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Silver rating is $8,109 (Appendix A).

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118 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

The Gold Rating and Cost

All IEQ improvements are maintained as previously defined, but the energy- and water-efficiency 

performance is improved to 43 percent (by enhancing the Silver-level renovations).

Unit #1 retains all Silver-level energy improvements, but upgrades the cooling and heating 

systems to a higher efficiency unit. To improve water efficiency, the washing machine is upgraded. 

Table 3-101 contains the Gold rating conditions and Table 3-102 contains the total initial cost to 

achieve the Gold-level rating.

Table 3-101. Unit #1—Gold Green Remodel Rating

Green Remodeling Path Golda

Rating Condition

Energy Efficiency (e-Ratio)b 1.08

Water Efficiency (gpd)c 29

IEQ Requirementsd Met

a The Gold Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

Table 3-102. Unit #1—Initial Cost to the Builder for Gold Green Remodeling

Green Category Gold Improvement Cost

Energy Efficiency (e-Ratio) 46% 5,530

Water Efficiency (gpd) 43% 521

IEQ Requirements All met 981

Total Meets Gold $7,032

The Gold Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Gold rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Gold rating is $1,425 (Appendix A).

• The annual water operating cost to achieve the Gold rating is $200 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Gold rating is $8,666 (Appendix A).

Unit #2 retains all Silver-level energy improvements but upgrades the cooling and heating 

systems to a higher efficiency unit. To improve water efficiency, the bathroom fixtures are 

upgraded. Table 3-103 contains the Gold rating conditions and Table 3-104 contains the total initial 

cost to achieve the Gold-level rating.
119

Table 3-103. Unit #2—Gold Green Remodel Rating

Green Remodeling Path Golda

Rating Condition

Energy Efficiency (e-Ratio)b 0.83

Water Efficiency (gpd)c 24

IEQ Requirementsd Met

a The Gold Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

Table 3-104. Unit #2—Initial Cost to the Builder for Gold Green Remodeling

Green Category Gold Improvement Cost ($)

Energy Efficiency (e-Ratio) 43% $7,367

Water Efficiency (gpd) 44% $530

IEQ Requirements All met $590

Total Meets Gold $8,486

The Gold Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Gold rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Gold rating is $1,443 (Appendix A).

• The annual water operating cost to achieve the Gold rating is $238 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Gold rating is $17,325 (Appendix A).

Unit #3 retains all Silver-level energy improvements, but upgrades the cooling and heating 

systems to a higher efficiency unit. To improve water efficiency, the washing machine is upgraded. 

Table 3-105 contains the Gold rating conditions and Table 3-106 contains the total initial cost to 

achieve the Gold-level rating.

Table 3-105. Unit #3—Gold Green Remodel Rating

Green Remodeling Path Golda

Rating Condition

Energy Efficiency (e-Ratio)b 0.90

Water Efficiency (gpd)c 24

IEQ Requirementsd Met

a The Gold Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

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120 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-106. Unit #3—Initial Cost to the Builder for Gold Green Remodeling

Green Category Gold Improvement Cost ($)

Energy Efficiency (e-Ratio) 43% 7,742

Water Efficiency (gpd) 47% 530

IEQ Requirements All met 644

Total Meets Gold $8,916

The Gold Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Gold rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Gold rating is $1,561(Appendix A).

• The annual water operating cost to achieve the Gold rating is $238 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Gold rating is $13,871 (Appendix A).

Unit #4 retains all Silver-level energy improvements, but upgrades the cooling and heating 

systems to a higher efficiency unit. To improve water efficiency, the washing machine is upgraded. 

Table 3-107 contains the Gold rating conditions and Table 3-108 contains the total initial cost to 

achieve the Gold-level rating.

Table 3-107. Unit #4—Gold Green Remodel Rating

Green Remodeling Path Golda

Rating Condition

Energy Efficiency (e-Ratio)b 1.07

Water Efficiency (gpd)c 28

IEQ Requirementsd Met

a The Gold Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional, but the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

Table 3-108. Unit #4—Initial Cost to the Builder for Gold Green Remodeling

Green Category Gold Improvement Cost ($)

Energy Efficiency (e-Ratio) 43% 6,319

Water Efficiency (gpd) 47% 777

IEQ Requirements All met 786

Total Meets Gold $7,882

The Gold Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.
121

• The annual maintenance cost to achieve the Gold rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Gold rating is $1,643 (Appendix A).

• The annual water operating cost to achieve the Gold rating is $282 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Gold rating is $11,244 (Appendix A).

The Emerald Rating and Cost

All IEQ improvements are maintained as previously defined, except the energy- and waterefficiency performance is improved to 50 percent (by enhancing the Gold-level renovations).

Unit #1 retains all Gold-level energy improvements, except for upgrading the cooling and heating 

systems to more efficient units. To improve water efficiency, the washing machine and toilet are 

upgraded. Table 3-109 contains the Emerald rating conditions and Table 3-110 contains the total 

initial cost to achieve the Emerald-level rating.

Table 3-109. Unit #1—Emerald Green Remodel Rating

Green Remodeling Path Emeralda

Rating Condition

Energy Efficiency (e-Ratio)b 0.99

Water Efficiency (gpd)c 25

IEQ Requirementsd Met

a The Emerald Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional—the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

Table 3-110. Unit #1—Initial Cost to the Builder for Emerald Green Remodeling

Green Category Emerald Improvement Cost ($)

Energy Efficiency (e-Ratio) 50% 7,859

Water Efficiency (gpd) 52% 865

IEQ Requirements All met 981

Total Meets Emerald $9,705

The Emerald Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Emerald rating is $359 (Appendix A).

• The annual energy operating cost to achieve the Emerald rating is $1,379 (Appendix A).

• The annual water operating cost to achieve the Emerald rating is $176 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Emerald rating is $14,891 (Appendix A).

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122 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Unit #2 retains all Gold-level energy improvements, and adds a solar system to the tankless water 

heater. To improve water efficiency, the toilet is upgraded. Table 3-111 contains the Emerald rating 

conditions and Table 3-112 contains the total initial cost to achieve the Emerald-level rating.

Table 3-111. Unit #2—Emerald Green Remodel Rating

Green Remodeling Path Emeralda

Rating Condition

Energy Efficiency (e-Ratio)b 0.72

Water Efficiency (gpd)c 22

IEQ Requirementsd Met

a The Emerald Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional—the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

Table 3-112. Unit #2—Initial Cost to the Builder for Emerald Green Remodeling

Green Category Emerald Improvement Cost ($)

Energy Efficiency (e-Ratio) 50% 11,867

Water Efficiency (gpd) 50% 786

IEQ Requirements All met 590

Total Meets Emerald $13,243

The Emerald Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Emerald rating is $453 (Appendix A).

• The annual energy operating cost to achieve the Emerald rating is $1,368 (Appendix A).

• The annual water operating cost to achieve the Emerald rating is $217 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Emerald rating is $27,710 (Appendix A).

Unit #3 retains all Gold-level energy improvements, and adds a solar system to the tankless water 

heater. To improve water efficiency, the toilet is upgraded. Table 3-113 contains the Emerald rating 

conditions and Table 3-114 contains the total initial cost to achieve the Emerald-level rating.
123

Table 3-113. Unit #3—Emerald Green Remodel Rating

Green Remodeling Path Emeralda

Rating Condition

Energy Efficiency (e-Ratio)b 0.78

Water Efficiency (gpd)c 22

IEQ Requirementsd Met

a The Emerald Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional—the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

Table 3-114. Unit #3—Initial Cost to the Builder for Emerald Green Remodeling

Green Category Emerald Improvement Cost ($)

Energy Efficiency (e-Ratio) 51% 14,488

Water Efficiency (gpd) 52% 786

IEQ Requirements All met 644

Total Meets Emerald $15,918

The Emerald Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Emerald rating is $453 (Appendix A).

• The annual energy operating cost to achieve the Emerald rating is $1,461 (Appendix A).

• The annual water operating cost to achieve the Emerald rating is $220 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Emerald rating is $29,955 (Appendix A).

Unit #4 retains all Gold-level energy improvements, and adds a solar system to the tankless 

water heater. To improve water efficiency, washing machine is upgraded. Table 3-115 contains the 

Emerald rating conditions and Table 3-116 contains the total initial cost to achieve the Emeraldlevel rating.

Table 3-115. Unit #4—Emerald Green Remodel Rating

Green Remodeling Path Emeralda

Rating Condition

Energy Efficiency (e-Ratio)b 0.93

Water Efficiency (gpd)c 26

IEQ Requirementsd Met

a The Emerald Rating for the Apartment Unit based on actual field evaluations.

b An e-Ratio of 1.00 is equivalent to 2006 International Energy Conservation Code (based on energy models using actual field data).

c gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. d The IEQ assumes that new carpet is optional—the increased cost of new carpet is $1.50/ft2

.

IEQ = Indoor Environmental Quality.

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124 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-116. Unit #4—Initial Cost to the Builder for Emerald Green Remodeling

Green Category Emerald Improvement Cost ($)

Energy Efficiency (e-Ratio) 50% 12,170

Water Efficiency (gpd) 51% 865

IEQ Requirements All met 786

Total Meets Emerald $13,821

The Emerald Rating for the Apartment Unit based on actual field evaluations.

An e-Ratio of 1.00 is equivalent to 2006 IECC (based on energy models using actual field data).

gpd is the estimated gallons of water used per day based on field data and the Handbook of Water Use and Conservation. 

IEQ = Indoor Environmental Quality.

• The annual maintenance cost to achieve the Emerald rating is $453 (Appendix A).

• The annual energy operating cost to achieve the Emerald rating is $1,539 (Appendix A).

• The annual water operating cost to achieve the Emerald rating is $282 (Appendix A).

• The 30-year lifetime replacement cost to achieve the Emerald rating is $14,382 (Appendix A).

Overall cost and performance data for Units #1, #2, #3, and #4 are provided in Tables 3-117, 3-118, 

3-119, and 3-120, respectively. The water utility rates are based on Silver Spring, Maryland water 

supply and sewer meter rates (source: Washington Suburban Sanitary Commission). We base 

the simple payback periods for energy and water efficiency on the current cost estimates and 

projected savings and do not consider future rate increases, inflation, replacement costs, or other 

conditions over the 30-year evaluation period.
125

Table 3-117. Overall Cost and Performance Data for Unit #1

Montgomery County, Maryland

Multifamily Unit #1

485 ft2

Baseline Bronze Silver Gold Emerald

Cost Comparison

Total Initial Green Cost ($) Unknown 2,499 3,951 7,032 9,705

Annual Maintenance Cost ($) 359 359 359 359 359

Annual Energy Operating Cost ($) 1,959 1,713 1,492 1,425 1,379

Annual Water Usage Cost ($) 318 255 225 200 176

30-Year Lifetime Replacement Cost ($) 6,800 6,800 8,100 8,666 14,891

Incremental Performance Improvement

Energy Efficiency (e-Ratio)

(compare to existing condition) 2.15 1.67 1.2 1.08 0.99

Water Efficiency (gpd/% reduced)

(compare to existing conditiona) 51.4 (gpd) 23.0% 34.0% 43.0% 52.0%

IEQ (Mandatory Requirements)

(NGBS Rating) Not Met Met Met Met Met

Simple Payback Periods

Energy Efficiency (years)

(initial energy cost/savings) NA 6 6 10 14

Water Efficiency (years)

(initial water cost/savings) NA 2 2 4 6

a The benchmark for comparison assumes two occupants using 51.4 (gpd) each. The benchmark cost is $318 is based on the actual estimated 

water usage; all projected savings are compared with this benchmark (which is also the baseline cost).

NA = not applicable; NGBS = National Green Building Standard; NR = not required.

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126 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-118. Overall Cost and Performance Data for Unit #2

Montgomery County, Maryland

Multifamily Unit #2

820 ft2

Baseline Bronze Silver Gold Emerald

Cost Comparison

Total Initial Green Cost ($) Unknown 2,752 3,820 8,486 13,243

Annual Maintenance Cost ($) 359 359 359 359 453

Annual Energy Operating Cost ($) 1,910 1,689 1,519 1,443 1,368

Annual Water Usage Cost ($) 391 301 262 238 217

30-Year Lifetime Replacement Cost ($) 8,672 8,672 11,928 17,325 27,710

Incremental Performance Improvement

Energy Efficiency (e-Ratio)

(compare to existing condition) 1.51 1.19 0.93 0.83 0.72

Water Efficiency (gpd/% reduced)

(compare to existing conditiona) 43.3 (gpd) 26.0% 37.0% 44.0% 50.0%

IEQ (Mandatory Requirements)

(NGBS Rating) Not Met Met Met Met Met

Simple Payback Periods

Energy Efficiency (years)

(initial energy cost/savings) NA 8 7 16 22

Water Efficiency (years)

(initial water cost/savings) NA 4 4 4 5

a The benchmark for comparison assumes three occupants using 43.3 (gpd) each. The benchmark cost is $391 is based on the actual estimated 

water usage; all projected savings are compared with this benchmark (which is also the baseline cost).

NA = not applicable; NGBS = National Green Building Standard; NR = not required.
127

Table 3-119. Overall Cost and Performance Data for Unit #3

Montgomery County, Maryland

Multifamily Unit #3

820 ft2

Baseline Bronze Silver Gold Emerald

Cost Comparison

Total Initial Green Cost ($) Unknown 2,956 5,137 8,916 15,918

Annual Maintenance Cost ($) 359 359 359 359 453

Annual Energy Operating Cost ($) 2,152 1,862 1,678 1,561 1,461

Annual Water Usage Cost ($) 410 315 256 238 220

30-Year Lifetime Replacement Cost ($) 7,183 7,549 8,492 13,871 29,955

Incremental Performance Improvement

Energy Efficiency (e-Ratio)

(compare to existing condition) 1.64 1.29 1.04 0.90 0.78

Water Efficiency (gpd/% reduced)

(compare to existing conditiona) 45.7 (gpd) 26.0% 42.0% 47.0% 52.0%

IEQ (Mandatory Requirements)

(NGBS Rating) Not Met Met Met Met Met

Simple Payback Periods

Energy Efficiency (years)

(initial energy cost/savings) NA 7 9 13 21

Water Efficiency (years)

(initial water cost/savings) NA 4 3 3 4

a The benchmark for comparison assumes three occupants using 45.7 (gpd) each. The benchmark cost is $410 is based on the actual estimated 

water usage; all projected savings are compared with this benchmark (which is also the baseline cost).

NA = not applicable; NGBS = National Green Building Standard; NR = not required.

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128 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Table 3-120. Overall Cost and Performance Data for Unit #4

Montgomery County, Maryland

Multifamily Unit #4

820 ft2

Baseline Bronze Silver Gold Emerald

Cost Comparison

Total Initial Green Cost ($) Unknown 2,893 5,276 7,882 13,821

Annual Maintenance Cost ($) 359 359 359 359 453

Annual Energy Operating Cost ($) 2,288 1,989 1,766 1,643 1,539

Annual Water Usage Cost ($) 529 403 340 301 282

30-Year Lifetime Replacement Cost ($) 6,800 6,950 8,109 11,244 14,382

Incremental Performance Improvement

Energy Efficiency (e-Ratio)

(compare to existing condition) 1.95 1.55 1.23 1.07 0.93

Water Efficiency (gpd/% reduced)

(compare to existing conditiona) 53.2 (gpd) 26.0% 39.0% 47.0% 51.0%

IEQ (Mandatory Requirements)

(NGBS Rating) Not Met Met Met Met Met

Simple Payback Periods

Energy Efficiency (years)

(initial energy cost/savings) NA 6 8 10 16

Water Efficiency (years)

(initial water cost/savings) NA 3 2 3 4

a The benchmark for comparison assumes three occupants using 53.2 (gpd) each. The benchmark cost is $529 is based on the actual estimated 

water usage; all projected savings are compared with this benchmark (which is also the baseline cost).

NA = not applicable; NGBS = National Green Building Standard; NR = not required.
129

Chapter 4.

Key Findings and Green Research 

Topics

4.1 Characterizing the Affordable Housing Designs

For all affordable designs in Table A-2 (on page xvii), the total incremental cost to achieve an 

NGBS Bronze rating ranges from $950 to $3,300. We consider this amount to be the minimum 

estimated cost of making the original affordable designs equally strong in all categories of green 

building and compliant with the NGBS Bronze rating. The OHA (Townhouse) design can be made 

equally strong in all categories of green building for less than $3,600, which makes the design 

compliant with an NGBS Gold rating.

The simple payback period29 for water-efficiency improvements is less than 5 years for Bronze 

and Silver ratings and ranges from 5 to 13 years for Gold and Emerald ratings. Energy-efficiency 

practices were significant in most affordable house designs, and the incremental improvements 

typically exceeded a simple payback period of 30 years for most of the designs, except the CMHA 

(One-Bedroom Apartment) design, which had minor energy-efficient features. We improved the 

energy performance and achieved a simple payback period from 19 to 21 years for the CMHA 

(One-Bedroom Apartment) design by specifying a centralized boiler system (with solar panels 

at the Gold and Emerald-levels) to supply heat and hot water for the entire apartment building. 

This economy-of-scale approach to green building has real cost-saving potential for multifamily 

housing. We recommend more research in the area of green multifamily housing, given the 

potential for greater performance and improved payback periods.

In general, the affordable green designs could be improved using the following measures.

1.Provide green training and education for the occupant or homeowner—effort is essential to 

maximizing the benefits of any green building design.

2.Use ENERGY STAR-rated appliances. In many of the affordable designs, non-ENERGY STARrated appliances and equipment were specified. With little or no additional cost, ENERGY 

STAR-rated appliances and equipment can be specified.

3.Use low-flow plumbing fixtures. In most of the affordable designs, the fixtures were not lowflow models. With little or no additional cost, low-flow plumbing fixtures can be specified.

4.Use products that have multiple green features. For example, specifying a cabinet material that 

has no or low-formaldehyde emissions, recycled content, and low-maintenance characteristics 

may have multiple green benefits in the areas of IEQ and resource efficiency.

5.Use construction practices that minimize material waste. For example, using preassembled 

construction components such as roof trusses or wall sections built in a factory can reduce waste 

and shorten construction time.

6.Optimize the house design. For example, when designing the house, consider installing 

ductwork inside the conditioned space; this design approach will improve energy and resource 

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130 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

efficiency—with little or no additional cost. If the budget permits, evaluate the house design with 

energy-modeling software.

7. Use durable, low-maintenance materials. For example, when selecting a cladding material, 

durability and maintenance requirements should be considered, along with the initial cost.

8.Most green practices are interconnected. For example, one cannot fully consider energy 

efficiency without also considering moisture management and indoor air quality. When 

reviewing a green design, ensure that all related areas are fully addressed.

4.2 Characterizing the Pre-1980 Multifamily Apartment 

Units30

Green remodeling for older homes can represent a significant improvement in terms of energy 

efficiency, water conservation, and indoor environmental quality; in addition, it has the added 

benefit of being cost effective based simply on payback periods. The incremental cost of energy 

renovations represents the largest percentage of the total remodeling cost, which is summarized in 

Graph 4-1. For the multifamily apartment units in the study, e-Ratios range from 1.51 to 2.15, which 

mean the actual energy ratings are significantly worse than the 2006 IECC. This is not surprising; 

for many pre-1980 residential houses and apartments, we expect to see older equipment that is not 

as energy efficient as modern equipment; for example, HVAC and hot-water heaters).

Graph 4-1. Incremental Cost of Energy Renovations

0.00 

5.00 

10.00 

15.00 

20.00 

25.00 

1 2 3 4 

cost ($)

Incremental Cost of Green Features per Sq. Ft. Remodel

Unit #1 

Unit #2 

Unit #3 

Unit #4 

Green Rating

Bronze Silver Gold Emerald

For these apartment units, the total cost to achieve the Bronze-level rating is estimated to be from 

$2,500 to $3,000, and the Silver-level rating is estimated to be from $4,000 to $5,300. This cost does 

not include the comprehensive audits to establish the existing conditions of the apartment units or 

the third-party verification of the improvements.

If an existing house or apartment has low-efficiency heating, cooling, and hot-water equipment, 

the simple payback period can be less than 10 years for Bronze- and Silver-rated improvements 

and range from 10 to 20 years for Gold- and Emerald-rated improvements. If an existing house 

or apartment has pre-1980 plumbing fixtures, the simply payback period is less than 5 years for 

water-efficiency improvements. The indoor environmental quality improvements have the added 
131

benefit of preventing moisture-related construction issues that may arise from energy efficiency 

improvements and may also be beneficial to those that have asthma.

If providers of affordable housing decide to focus on green remodeling, they will need to 

determine whether a particular green remodeling level should be targeted or if a certain amount 

of funding should be allocated for renovations. Pros and cons exist for both approaches. If the 

condition of the older housing stock is known or estimated from a statistical sample, one will be 

able to determine the best approach. Generally, if a wide variation in performance and condition 

exists, we recommend the allocation of a certain amount of funding for each house renovation 

(that is, $3,000 to $5,000).

Because the NGBS Green Remodeling program requires the improvement of energy efficiency, 

water efficiency, and IEQ, green remodeling efforts can be expanded to older residential houses 

and apartment buildings by leveraging many existing weatherization programs that focus only 

on energy improvements. If existing houses or apartment buildings are similar to the case study 

example, we estimate the additional cost to range from $1,000 to $1,500 at the Bronze remodel level 

assuming an existing weatherization program improves the energy efficiency by 20 percent. The 

added cost does not include comprehensive audits to establish the existing condition or accredited 

third-party verification.

4.3 Quantifying Benefits and Affordability

Each of the six categories of the NGBS has some economic benefit. The indirect economic benefits 

are difficult to quantify because they are typically realized on a large community or regional scale. 

For example, land development that minimizes stormwater runoff and preserves wetlands has 

an economic benefit in terms of preventing flash floods and minimizing pollution, which reduces 

the indirect costs of rebuilding housing after floods or cleaning up polluted water sheds. Using 

construction resources efficiently has the added value of producing less waste, which reduces 

the indirect cost of expanding landfills. The occupants of a green-rated house realize several 

direct economic benefits; these benefits may include fewer frequent visits to the hospital for those 

with asthma or other respiratory conditions when indoor environmental-quality practices are 

implemented. We also expect the occupants to use less energy and water, which is expected to lead 

to lower utility bills. Finally, when the occupants receive training and information about green 

features, they will have the ability to maximize the potential direct savings.

4.4 Quantifying Energy Savings

The energy performance improvements in all affordable designs are defined based on energy 

modeling results using the 2006 IECC criteria, which stipulates that the energy improvements 

must consider only reductions in energy used for heating, cooling, and service-water heating.31 

For example, Chart 4-1 shows the distribution of the estimated energy cost in the original baseline 

Safe Harbor (AMT2354A) design.

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132 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Chart 4-1. Annual Energy Cost Distribution for the Original Baseline AMT2356A Design

Cooling Cost 

Heating Cost 

Hot Water Heating Cost 

HVAC & hwh Savings 

Appliances/MELs Savings 

Appliances/MELs Cost 

Bayou LaBatre, AL AMT2356A Base Cost

If we consider the baseline cost distribution illustrated in Chart 4-1, we notice that heating, 

cooling, and hot-water heating costs equal approximately 45 percent of the total annual projected 

energy cost. The baseline cost distribution includes the ENERGY STAR-qualified features of the 

original design, which makes the energy performance 6-percent more efficient than the 2006 

IECC.

To demonstrate compliance with the 2006 IECC criteria, we reduced cost in the area of cooling, 

heating, and hot-water heating at the specified NGBS performance path method levels of 15, 

30, 50, and 60 percent for Bronze, Silver, Gold, and Emerald, respectively. After achieving the 

required improvements based on the 2006 IECC criteria, we also improved appliance/MEL32

performance by specifying energy-efficient appliances (if they were not within the original 

design) and compact florescent lighting. These improvements led to some marginal reductions in 

the appliance/MEL costs.

Chart 4-2 shows the incremental energy costs and savings of the Silver-rated Safe Harbor 

(AMT2356A) design. The cost distribution chart identifies the savings related to heating, 

cooling, and hot-water heating improvements and the savings related to appliance and MEL 

improvements. To achieve the Silver rating, the house was energy modeled to meet an e-Ratio of 

0.70, which equaled an additional savings of 24 percent more than the original baseline heating, 

cooling, and hot-water heating performance. In addition, a savings of 5 percent was achieved 

by improving the baseline appliance and MEL energy performance. When we combine both 

incremental savings, a total whole-house annual energy savings of 14 percent is achieved. The 

reader should not confuse 2006 IECC energy savings with whole-house annual energy savings; 

the former is necessary for NGBS rating compliance (and other green building and energy 

efficiency programs), and the latter should be improved, when possible.
133

Chart 4-2. Annual Energy Cost Distribution for the Silver-Rated AMT2356A Design

Bayou LaBatre, AL AMT2356A Silver Cost and Incremental Savings 

Cooling Cost 

Heating Cost 

Hot Water Heating Cost 

HVAC & hwh Savings 

Appliances/MELs Savings 

Appliances/MELs Cost 

The energy performance improvements for all green remodeling multifamily apartment units 

are defined based on energy modeling results using the 2006 IECC criteria, which stipulate that 

the energy improvements must consider only reductions in energy used for heating, cooling, and 

service-water heating.33 For example, Chart 4-3 shows the distribution of the estimated energy cost 

in the existing baseline Maryland Multifamily (Unit #2) design and field audit data.

If we consider the baseline cost distribution illustrated in Chart 4-3, we notice that heating, 

cooling, and hot-water heating costs equal approximately 59 percent of the total annual projected 

energy cost. This distribution results from the age of the existing HVAC and hot-water heating 

equipment and the e-Ratio of 1.51.

Chart 4-3. Annual Energy Cost Distribution for the Maryland Multifamily Unit #2 Design

Cooling Cost 

Heating Cost 

Hot Water Heating Cost 

HVAC & hwh Savings 

Appliances/MELs Savings 

Appliances/MELs Cost 

MD Multifamily Unit #2 Apt Base Cost 

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134 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

To demonstrate compliance with the 2006 IECC criteria, we reduced cost in the area of cooling, 

heating, and hot-water heating at the specified NGBS green remodeling path at a minimum 

level of 20, 34, 43, and 50 percent for Bronze, Silver, Gold, and Emerald, respectively. We did not 

improve the appliance/MEL34 performance simply because the NGBS green remodeling path is 

focused cooling, heating, and hot-water heating only.

Chart 4-4 shows the incremental energy costs and savings of the Silver-rated Maryland 

Multifamily (Unit #2) design. The cost distribution chart identifies the savings related to heating, 

cooling, and hot-water heating improvements, which are significant given the size of the heating, 

cooling, and hot-water heating energy usage. To achieve the Silver rating, the target performance 

improvement of 34 percent was met. A total whole-house annual energy savings of 20 percent 

is achieved. The reader should not confuse 2006 IECC energy savings with whole-house annual 

energy savings; the former is necessary for NGBS rating compliance (and other green building 

and energy efficiency programs), and the latter should be improved, when possible, although 

appliance/MEL improvements are not required.

Because all multifamily apartment units in the study have energy performance that is much worse 

than the 2006 IECC, the potential incremental energy cost savings are significant. The energy 

improvements are similar to those being performed under weatherization programs, which further 

highlight the savings potential for green remodeling of pre-1980 houses and apartments.

Chart 4-4. Annual Energy Cost Distribution for the Silver-Rated Unit #2 Design

Cooling Cost 

Heating Cost 

Hot Water Heating Cost 

HVAC & hwh Savings 

Appliances/MELs Savings 

Appliances/MELs Cost 

MD Multifamily Unit #2 Apt Silver Cost

Because energy-related upgrades represent the largest percentage of the total cost of green 

building, improvements in energy-related technology will lead to improvements in the 

overall affordability of green building. Energy improvements are necessary to make the Gold 

and Emerald levels more affordable because the payback periods are typically greater than 

30-years. The U.S. Department of Energy continues to investigate strategies for reducing energy 

consumption in residential housing. Through programs like Building America and the Energy 

Value Housing Award (EVHA), we may realize further advancements in energy efficient homes.
135

4.5 Quantifying Water Savings

Using the Handbook of Water Use and Conservation35 we defined the average daily per capita 

water usage as 56.4 (gpd/occupant).36 This average daily water usage estimate assumes the 

house includes a dishwasher, washing machine, shower, faucets, and toilet. The water usage 

estimate is not based on the number of plumbing fixtures or appliances present in the house, 

but a dishwasher, washing machine, shower, faucets, and toilet must exist within the affordable 

house design to assume the occupant will consume the average daily quantity we defined. In 

fact, some water utilities publish local average daily consumption quantities and most of these 

values are within 10 to 20 percent of our 56.4 (gpd/occupant) benchmark. This water-consumption 

benchmark was developed for cost calculation purposes and is not a part of the NGBS waterefficiency requirements.

Affordable designs with existing water-efficiency features have a cost savings that can range 

from 10 to 20 percent, when compared with the benchmark. Affordable designs without waterefficiency features have a cost savings that are less than 3 percent when compared with the 

benchmark. The Valley View Homes (One-Bedroom Apartment) is the nongreen exception that 

has a potential cost savings of 12 percent because of a water-efficient dishwasher, shower heads, 

faucets, and no washing machine inside the apartment unit. In fact, the Valley View Homes (OneBedroom Apartment) met all the mandatory NGBS requirements for water efficiency, but did not 

have enough water-efficient features to qualify for the Bronze rating. At the Emerald-rated level, 

one-half of the affordable designs have an estimated cost savings of 30 percent when compared 

with the benchmark.

When considering green remodeling, water usage must be reduced by a specific percentage for 

each green rating level. First, the average daily water usage estimate is established based on actual 

field measurements (or utility bills). Second, a customized approach for water usage reduction 

is considered for each specific unit. For this study, our approach to reducing water consumption 

included installing low-flow plumbing fixtures and high-water-efficiency appliances such as 

washing machines and dishwashers. If some of these upgrades already exist, which was the case 

for Unit #3, then the toilet should be replaced with low-flow or dual flush models.

To realize a monetary savings, the water utility service must have a meter-based billing system. 

In some areas of Baton Rouge, Louisiana (including the Hidden Cove development), flat rates are 

used instead of meter rates. This flat-rate method of billing can be common for both sewer and 

water supply services. When a flat-rate method of billing is used, the occupant will not directly 

realize any monetary savings associated with the individual water conservation practices. If the 

entire community adopts a wide range of water conservation practices, the local water utility may 

decrease the flat rates but no guarantee of savings exists with a flat-rate billing system.

CHAPTER 4
136 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

4.6 Limitations of This Study

Readers who are seeking further guidance on selecting a green program should consider this 

study and other resources on sustainable residential construction.

The incremental costs presented in this report are skewed, because most of the affordable housing 

designs included significant green features; therefore, one should not attempt to extrapolate these 

costs to other affordable house designs or to establish a cost estimate for converting a nongreen 

house design.

Many incremental green costs are presented as $/ft2

, but the cost should not be scaled based on 

the size of the dwelling. In fact, many green costs are independent of the size of the home. For 

example, water conservation is a function of the number of occupants and their behaviors, not the 

size of the house. Energy conservation is a function of the house size, building enclosure design, 

equipment selection, and the occupants’ behaviors.

4.7 Recommended Green Research Topics

Based on the findings of this report, the following green research topics are recommended for 

further study.

1.Develop a methodology for monetizing the benefits of products and practices that claim to 

improve the indoor environmental quality, land and lot use, and resource efficiency.

2.Develop green building approaches for multifamily residential housing that leverage the 

economy of scale that this type of housing offers.

3.Sample and characterize the condition of older homes that can benefit from green remodeling 

retrofits in various climate zones.

4.Evaluate nongreen affordable housing to determine the incremental cost of converting to a 

green design.

5.Expand green evaluations to other Climate Zones (that is, #1, #6, #7, and #8) not included in this 

study.

6.Conduct more long-term demonstration projects of green affordable housing that focus on 

occupant use and training (that is, expected performance versus actual performance).
APPENDIX A 137

APPENDIX A 

COST DETAILS

1 — Climate Zone #2

A. Baton Rouge, Louisiana

B. Bayou LaBatre, Alabama

2 — Climate Zone #3

A. Oakland, California

3 — Climate Zone #4

A. Richmond, Virginia

B. Seattle, Washington

4 — Climate Zone #5

A. Akron, Ohio – Townhouse

B. Akron, Ohio – Single Family Home

C. Cuyahoga, Ohio

5 — Retrofit – climate zone #4

A. Silver Spring, Maryland 

 i. Unit 1

 ii. Unit 2

 iii. Unit 3

 iv. Unit 4
138 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Labor Cost Chart

Annual Hourly Burden Vehicle Total/Hr. Avg./Hr.

1.27 .55/mile

Administrative 48,700 23 30 30

First-line Const. 61,280 29 37 4 41

Business Ops Pers 64,990 31 40 40

Construction Mgr. 89,770 43 55 4 59

General Ops Mgr. 107,970 52 66 66

Consultant 110-150 0 130

First-line Const. 61,280 29 37 4 41

First-line Const Mech. 59,160 28 36 4 40

First-line Maint. 42,990 21 26 4 30

Source: BLS http://www.bls.gov/oes/2008/may/oes_nat.htm#b00-0000

47

37
APPENDIX A 139

APPENDIX A 

COST DETAILS

1 — Climate Zone #2

A. Baton Rouge, Louisiana
140 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

KC910 Baton Rouge 11/20/2009 base

SF floor area 910 bronze

SF driveway 405 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity

Annual 

Maint. 

Cost Per 

Year

Reference

base bronze silver gold emerald

Appliances

D/W, Estar 28 MA 28.00 28.00 28.00 28.00 28.00

Range 42 MA 42.00 42.00 42.00 42.00 42.00

Refrigerator, Estar 74 MA 73.73 73.73 73.73 73.73 73.73

Washer/Dryer Stack, Estar 62 MA 62.00 62.00 62.00 62.00 62.00

Electrical

Incandescent Fixtures 0.00 0.00

Compact Flourescent Fixtures 0.00 0.00 0.00

HVAC

Air handler, move from attic 0 0.00 0.00 0.00

Heat pump, 13 Seer 156 MA

Heat pump, 14 Seer not 13 156 MA 156.00 156.00

Heat Pump, 15 Seer not 13 156 MA 156.00 156.00

Heat Pump, 18 Seer not 13 156 MA 156.00

Ducts, Sealed 0 0.00 0.00 0.00 0.00

Thermostat, prog. 0 0.00 0.00 0.00 0.00

Insulation

Cellulose, R38 not R30 0 0.00 0.00 0.00

Foam, rigid R-5 sheath 0 0.00 0.00 0.00

Plumbing Appliances & Fixtures

W/H, elec.. 92 47 S 47.00

W/H, elec. .94 not.92 47 S 47.00

W/H, elec. .98,tkls. not .92 47 47.00

ICS Solar H/W w. .98 tkls not .92 94 94.00 94.00

Siding

Fiber cement 0 A 0.00 0.00 0.00 0.00 0.00

Vinyl 0

409 409 409 456 456

Annual Maintenance Cost
Baton Rouge, LouisianaKC -910

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 177 161 16 9% 121 56 32% 121 56 32% 98 79 45%Heating Cost 73 65 8 11% 31 42 58% 31 42 58% 26 47 64%Hot Water Heating Cost 217 211 6 3% 203 14 6% 80 137 63% 80 137 63%HVAC & hwh Savings N/A 30 112 235 263

Appliances/MELs Savings N/A 0 31 31 31

Appliances/MELs Cost 585 585 554 554 554

HVAC & HWH sub-total 467 437 6% 355 24% 232 50% 204 56%

Grand Total 1052 1022 97% 909 86% 786 75% 758 72%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost

Silver

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost
142 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

KC910 Baton Rouge 11/20/2009 base

SF floor area 910 bronze

SF driveway 405 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity Cost New

ReferenceEst. LifeReference

base bronze silver gold emerald

Appliances

D/W, Estar 300 N 9 D 1000.00 1000.00 1000.00 1000.00 1000.00

Range 600 N 13 D 1384.62 1384.62 1384.62 1384.62 1384.62

Refrigerator, Estar 800 N 13 D 1846.15 1846.15 1846.15 1846.15 1846.15

Washer/Dryer Stack, Estar 1,300 N 10 D 3900.00 3900.00 3900.00 3900.00 3900.00

Electrical

Incandescent Fixtures 600 N 10 D 1800.00 1800.00

Compact Flourescent Fixtures 600 N 10 D 1800.00 1800.00 1800.00

HVAC

Air handler, move from attic 680 Q 15 D 1360.00 1360.00 1360.00

Heat pump, 13 Seer 3,413 Q 15 D

Heat pump, 14 Seer not 13 4,241 Q 15 D 8481.56 8481.56

Heat Pump, 15 Seer not 13 4,241 Q 15 D 8481.56 8481.56

Heat Pump, 18 Seer not 13 6,920 Q 15 D 13839.71

Ducts, Sealed 1,450 Q 10 D

Thermostat, prog. 50 N 35 D

Insulation

Cellulose, R38 not R30 214 Q 77 D 0.00

Foam, rigid R-5 sheath 1,353 Q 77 R 0.00

Plumbing Appliances & Fixtures

W/H, elec.. 92 0 11 D 0.00

W/H, elec. .94 not.92 0 11 D 0.00

W/H, elec. .98,tkls. not .92 0 12 T 0.00

ICS Solar H/W w. .98 tkls not .92 4,500 13 10384.62 10384.62

Siding

Fiber cement 0 50 J 0.00

Vinyl 0 77 D

18,412 18,412 19,772 30,157 35,515

30 year Lifetime Replacement Cost
APPENDIX A 143

Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



http://www.kronotexusa.com/warranty.htm

NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

NAHB Report says lifetime

Manufacturer's warranty

Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

Based on purchase of a Maintenance Agreement

Costs developed via internet survey conducted Nov. 2009.

Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated from 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

Dryer has no estimated savings over any other.

ASHRAE Cost Database

Set even to life of vinyl siding (cladding).

Based on one hour per year to flush water tank, vacuum driveway, etc.

One manufacturer's warranty on heat exchanger. Bosch.

http://www.aceee.org/Consumerguide/waterheating.htm

Savings is reflected in operating cost.

ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpola

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating c

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Unit Avg.

Baton Rouge, Louisiana

Average Daily Per Capita Usage in Gallons3

Per Capita Daily Savings (% of Avg.) Base Bronze Silver Gold Emerald

h1 gal/load 7.3 1.0

4.9 32.4% 0.3 0.3 0.3 0.3 0.3

h2 gal/load 42.5 11.6

gal/load 26.8 37.0% 4.3 4.3 4.3 4.3 4.3

 > 6.02 gal/load 18.0 57.6%

gpm 2.5 11.6 x

gpm 2.3 10.0% 1.2 1.2gpm 1.8 28.0% 3.2 3.2

gpm 2.2 10.9gpm 1.5 31.8% 3.5 3.5 3.5 3.5 3.5

gpf 1.6 18.5 xxx

gpf 1.3 20.0% 3.7 3.7

Baths 1.2 0.0% x x x x x

Other 1.6 0.0% x x x x xTotal (gpd/occ) 56.4 n/a 8.1 9.2 9.2 15.0 15.0

Percent Savings Over Average Daily PC 14.3% 16.4% 16.4% 26.7% 26.7%

pf=gallons per flush; gpd/occ=gallons per day per occupant; PC=Per Capita

mal Wash and Eco Wash.

cfm?c=clotheswash.pr_tips_clothes_washers

ter efficiency in gallons of water consumed per cubic foot of capacity. The lower the WF, the more water efficient the clothes 

pproximately 45% more water efficient than a non-energy star model.)

e ENERGY STAR qualified product list

f laundry per week, larger front-loading washers use only 16-20 gallons of water per load, compared to a conventional top-load 

s per load. Factoring in the capacity advantage of a large front-loader, (almost twice the load-size of a conventional top-loader), 

ed to 80-90 gallons to get the same amount of laundry cleaned....The ENERGY STAR® logo indicates that a particular washing 

S Department of Energy's highest minimum efficiency standards for energy-efficient washers by a at least minimum of 37%.

nergycenter.org/home/appliances/washers.html

rdnn/Default.aspx?tabid=85

and Conservation , Amy Vickers

DishwasherToilets FaucetsShowersWashing Machine
APPENDIX A 145

APPENDIX A 

COST DETAILS

B. Bayou LaBatre, Alabama
146 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Bayou Labatre, Alabama - AMT2356A base

SF floor area 967 bronze

SF driveway 405 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity

Annual 

Maint. Cost 

Per Year

Reference

base bronze silver gold emerald

Appliances

D/W, Estar 28 MA 28.00 28.00 28.00 28.00 28.00

Range 42 MA 42.00 42.00 42.00 42.00 42.00

Refrigerator 74 MA 73.73

Refrigerator, Estar 74 MA 73.73 73.73 73.73 73.73

Washer 52 MA 52.00 52.00

Washer, EStar 52 MA 52.00 52.00 52.00

Electrical

Incandescent Fixtures 0.00 0.00 0.00

Compact Flourescent Fixtures 0.00 0.00

HVAC

Air handler, move from attic 0 0.00 0.00 0.00 0.00 0.00

Heat pump, 13 Seer - 2 ton 156 MA 156.00 156.00

Heat pump, 14 Seer not 13 156 MA 156.00

Heat Pump, 16 Seer not 13 156 MA 156.00

Heat Pump, 18 Seer not 13 156 MA 156.00

Ducts, Sealed 0 0.00 0.00 0.00 0.00

Thermostat, prog. 0 0.00 0.00 0.00 0.00

Insulation

Cellulose, R38 not R30 0 0.00 0.00 0.00 0.00

Foam, rigid R-5 sheath 0 0.00

Plumbing Appliances & Fixtures

W/H, elec. .92 47 S 47.00

W/H, elec. .94 not.92 47 S 47.00

W/H, elec. .98,tkls. not .92 47 47.00 47.00 47.00

ICS Solar H/W w. .98 tkls not .92 94 94.00 94.00

Siding

Fiber cement 0 A 0.00 0.00 0.00 0.00 0.00

Vinyl 0

399 399 399 493 493

Annual Maintenance Cost
Bayou LaBatre, AlabamaPalm Harbor

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 162 126 36 22% 95 67 41% 107 55 34% 81 81 50%Heating Cost 59 52 7 12% 38 21 36% 42 17 29% 26 33 56%Hot Water Heating Cost 183 177 6 3% 168 15 8% 61 122 67% 61 122 67%HVAC & hwh Savings N/A 49 103 194 236

Appliances/MELs Savings N/A 18 34 26 26

Appliances/MELs Cost 500 482 466 474 474

HVAC & HWH sub-total 404 355 12% 301 25% 210 48% 168 58%

Grand Total 904 837 93% 767 85% 684 76% 642 71%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Silve

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost
148 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Bayou Labatre, Alabama - AMT2356A base

SF floor area 967 bronze

SF driveway 405 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity Cost New

ReferenceEst. LifeReference

base bronze silver gold emerald

Appliances

D/W, Estar 300 N 9 D 1000.00 1000.00 1000.00 1000.00 1000.00

Range 600 N 13 D 1384.62 1384.62 1384.62 1384.62 1384.62

Refrigerator 800 N 13 D 1846.15

Refrigerator, Estar 800 N 13 D 1846.15 1846.15 1846.15 1846.15

Washer 600 N 10 D 1800.00 1800.00

Washer, EStar 600 N 10 D 1800.00 1800.00 1800.00

Electrical

Incandescent Fixtures 600 N 10 D 1800.00 1800.00 1800.00

Compact Flourescent Fixtures 600 N 10 D 1800.00 1800.00

HVAC

Air handler, move from attic 680 Q 15 D 1360.00 1360.00 1360.00 1360.00 1360.00

Heat pump, 13 Seer - 2 ton 3,413 Q 15 D 6826.00 6826.00

Heat pump, 14 Seer not 13 4,241 Q 15 D 8482.00

Heat Pump, 16 Seer not 13 4,884 Q 15 D 9768.00

Heat Pump, 18 Seer not 13 6,920 Q 15 D 13840.00

Ducts, Sealed 1,450 Q 10 D

Thermostat, prog. 50 N 35 D

Insulation

Cellulose, R38 not R30 228 Q 77 D 88.65 88.65 88.65 88.65

Foam, rigid R-5 sheath 1,275 Q 77 R 496.83

Plumbing Appliances & Fixtures

W/H, elec. .92 0 11 D 0.00

W/H, elec. .94 not.92 0 11 D 0.00

W/H, elec. .98,tkls. not .92 0 12 T 0.00 0.00 0.00

ICS Solar H/W w. .98 tkls not .92 4,500 13 10384.62 10384.62

Siding

Fiber cement 0 50 J

Vinyl 0 77 D

16,017 16,105 19,047 28,146 34,001

30 year Lifetime Replacement Cost
APPENDIX A 149

Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



http://www.kronotexusa.com/warranty.htm

NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

NAHB Report says lifetime

Manufacturer's warranty

Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

Based on purchase of a Maintenance Agreement

Costs developed via internet survey conducted Nov. 2009.

Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated from 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

Dryer has no estimated savings over any other.

ASHRAE Cost Database

Set even to life of vinyl siding (cladding).

Based on one hour per year to flush water tank, vacuum driveway, etc.

One manufacturer's warranty on heat exchanger. Bosch.

http://www.aceee.org/Consumerguide/waterheating.htm

Savings is reflected in operating cost.

ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluc

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

ons

T2356A

els Unit Avg.

Bayou La Batre, Alabama

Average Daily Per Capita Usage in Gallons3

Per Capita Daily Savings (% of Avg.) Base Bronze Silver Gold Emerald

ash1 gal/load 7.3 1.0

ar1 4.9 32.4% 0.3 0.3 0.3 0.3 0.3

ash2 gal/load 42.5 11.6 x x

ar2 gal/load 26.8 37.0% 4.3 4.3

tor > 6.02 gal/load 18.0 57.6% 6.7

gpm 2.5 11.6 x

5 gpm 2.3 10.0%

0 gpm 1.8 28.0% 3.2 3.2 3.2 3.2

m gpm 2.2 10.9 x

gpm 1.5 31.8% 3.5 3.5 3.5 3.5

f gpf 1.6 18.5 xxx

gpf 1.3 20.0% 3.7 3.7

Baths 1.2 0.0% x x x x x

Other 1.6 0.0% x x x x xTotal (gpd/occ) 56.4 n/a 0.3 7.0 11.3 15.0 17.4

Percent Savings Over Average Daily PC 0.6% 12.5% 20.1% 26.7% 30.9%

 gpf=gallons per flush; gpd/occ=gallons per day per occupant; PC=Per Capita

rmal Wash and Eco Wash.

ex.cfm?c=clotheswash.pr_tips_clothes_washers

water efficiency in gallons of water consumed per cubic foot of capacity. The lower the WF, the more water efficient the clothes 

 approximately 45% more water efficient than a non-energy star model.)

 the ENERGY STAR qualified product list

s of laundry per week, larger front-loading washers use only 16-20 gallons of water per load, compared to a conventional top-load 

ons per load. Factoring in the capacity advantage of a large front-loader, (almost twice the load-size of a conventional top-loader), 

pared to 80-90 gallons to get the same amount of laundry cleaned....The ENERGY STAR® logo indicates that a particular washing 

US Department of Energy's highest minimum efficiency standards for energy-efficient washers by a at least minimum of 37%.

renergycenter.org/home/appliances/washers.html

merdnn/Default.aspx?tabid=85

e and Conservation , Amy Vickers

DishwasherToilets FaucetsShowersWashing Machine
APPENDIX A 151

APPENDIX A 

COST DETAILS

2 — Climate Zone #3

A. Oakland, California
152 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

two story townhouse, Oakland, California base

SF floor area 1105 bronze

SF driveway 200 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity

Annual 

Maint. Cost 

Per Year

Reference

base bronze silver gold emerald

Appliances

D/W, Estar 28 MA 28.00 28.00 28.00 28.00 28.00

Dryer, elec. 52 MA 52.00 52.00 52.00 52.00 52.00

Range, gas 42 MA 42.00 42.00 42.00 42.00 42.00

Refrigerator 74 MA 73.73 73.73 73.73 73.73

Refrigerator, Estar 74 MA 73.73

Washer 52 MA 52.00 52.00

Washer, EStar 52 MA 52.00 52.00 52.00

HVAC

Boiler in conditioned 0

Boiler 0.92 ef 75 MA 75.00 75.00 75.00 75.00 75.00

Plumbing Appliances & Fixtures

Boiler 0.92 ef w/ solar dhw S see hvac see hvac see hvac see hvac see hvac

323 323 323 323 323

Annual Maintenance Cost
Oakland, California

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 000 00 00 00

Heating Cost 72 72 0 0% 72 0 0% 72 0 0% 76 -4 -6%Hot Water Heating Cost 30 30 0 0% 30 0 0% 30 0 0% 30 0 0%HVAC & hwh Savings N/A 0 0 0 -4

Appliances/MELs Savings N/A 0 4 4 33

Appliances/MELs Cost 646 646 642 642 613

HVAC & HWH sub-total 102 102 0% 102 0% 102 0% 106 -4%

Grand Total 748 748 100% 744 99% 744 99% 719 96%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Silver

Gold

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Silve

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost
154 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

two story townhouse, Oakland, California base

SF floor area 1105 bronze

SF driveway 200 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity Cost New

Reference

Est. LifeReference

base bronze silver gold emerald

Appliances

D/W, Estar 300 N 9 D 1000.00 1000.00 1000.00 1000.00 1000.00

Dryer, elec. 600 N 13 D 1384.62 1384.62 1384.62 1384.62 1384.62

Range, gas 600 N 13 D 1384.62 1384.62 1384.62 1384.62 1384.62

rotaregirfeR N008 D31 1846.15 1846.15 1846.15 1846.15

ratsE ,rotaregirfeR N002,1 D31 2769.23

Washer 600 N 10 D 1800.00 1800.00

ratSE ,rehsaW N001,1 10 D 3300.00 3300.00 3300.00

HVAC

denoitidnoc ni relioB Q0 D51

fe 29.0 relioB Q640,3 D51 6092.80 6092.80 6092.80 6092.80 6092.80

Plumbing Appliances & Fixtures

Boiler 0.92 ef w/ solar dhw see hvac 11 D see hvac see hvac see hvac see hvac see hvac

13,508 13,508 15,008 15,008 15,931

30 year Lifetime Replacement Cost
APPENDIX A 155

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated from 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

ns

d, California

vels Unit Avg. Bayou La Batre, Alabama

Average Daily Per Capita Usage in Gallons3

Per Capita Daily Savings (% of Avg.) Base Bronze Silver Gold Emerald

Wash1 gal/load 7.3 1.0 x x

tar1 4.9 32.4% 0.3 0.3 0.3

Wash2 gal/load 42.5 11.6 x x

tar2 gal/load 26.8 37.0% 4.3 4.3

ctor > 6.02 gal/load 18.0 57.6% 6.7

gpm 2.5 11.6

2.5 gpm 2.3 10.0%

2.0 gpm 1.8 28.0% 3.2 3.2 3.2 3.2 3.2

pm gpm 2.2 10.9

5 gpm 1.5 31.8% 3.5 3.5 3.5 3.5 3.5

pf gpf 1.6 18.5 x x

8 gpf 1.3 20.0% 3.7 3.7 3.7

Baths 1.2 0.0% x x x x xOther 1.6 0.0% x x x x xTotal (gpd/occ) 56.4 n/a 6.7 6.7 15.0 15.0 17.4

Percent Savings Over Average Daily PC 11.9% 11.9% 26.7% 26.7% 30.9%

gpf=gallons per flush; gpd/occ=gallons per day per occupant; PC=Per Capita

mal Wash and Eco Wash.

x.cfm?c=clotheswash.pr_tips_clothes_washers

water efficiency in gallons of water consumed per cubic foot of capacity. The lower the WF, the more water efficient the clothes 

approximately 45% more water efficient than a non-energy star model.)

the ENERGY STAR qualified product list of laundry per week, larger front-loading washers use only 16-20 gallons of water per load, compared to a conventional top-load 

ns per load. Factoring in the capacity advantage of a large front-loader, (almost twice the load-size of a conventional top-loader), 

ared to 80-90 gallons to get the same amount of laundry cleaned....The ENERGY STAR® logo indicates that a particular washing 

US Department of Energy's highest minimum efficiency standards for energy-efficient washers by a at least minimum of 37%.

energycenter.org/home/appliances/washers.html

erdnn/Default.aspx?tabid=85

e and Conservation , Amy Vickers

Toilets DishwasherWashing MachineShowersFaucets
APPENDIX A 157

APPENDIX A 

COST DETAILS

3 — Climate Zone #4

A. Richmond, Virginia
158 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

18' SFD, Richmond VA base

SF floor area 1,695 bronze

SF driveway 405 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity

Annual 

Maint. Cost 

Per Year

Reference

base bronze silver gold emerald

Appliances

D/W 28 MA

D/W, Estar 28 MA 28.00 28.00 28.00 28.00 28.00

Dryer, elec. 52 MA none supplied

Range 42 MA 42.00 42.00 42.00 42.00 42.00

Refrigerator 74 MA none supplied

Washer 52 MA none supplied

Electrical

Incandescent Fixtures 0.00 0.00 0.00 0.00 0.00

Compact Flourescent Fixtures

HVAC

Air handler, move from attic 0 0.00 0.00 0.00 0.00 0.00

Heat pump, 13 Seer/7.7 AFUE - 2 ton 156 MA 156.00 156.00

Heat Pump, 16 Seer/9.0 AFUE not 13 156 MA 156.00 156.00

Heat Pump, 18 Seer/9.5 AFUE not 13 156 MA 156.00

Ducts, Sealed 0 0.00 0.00 0.00 0.00

Thermostat, prog. 0 0.00 0.00 0.00 0.00

Insulation

Cellulose, R49 not R38 0 0.00 0.00

Cellulose, R60 not R38 0 0.00

Foam, rigid R-5 sheath 0 0.00 0.00

Foam, rigid R-10 sheath 0 0.00

Plumbing Appliances & Fixtures

W/H, elec. .92 47 S 47.00 47.00

W/H, elec. .98,tkls. not .92 47 47.00

ICS Solar H/W w. .98 tkls not .92 94 94.00 94.00

Siding

Fiber cement 0 A 0.00 0.00 0.00 0.00 0.00

Vinyl 0

273 273 273 320 320

Annual Maintenance Cost
Richmond, Va

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 149 136 13 9% 121 28 19% 121 28 19% 108 41 28%Heating Cost 229 232 -3 -1% 165 64 28% 165 64 28% 129 100 44%Hot Water Heating Cost 187 187 0 0% 172 15 8% 39 148 79% 39 148 79%HVAC & hwh Savings N/A 10 107 240 289

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 585 585 585 585 585

HVAC & HWH sub-total 565 555 2% 458 19% 325 42% 276 51%

Grand Total 1150 1140 99% 1043 91% 910 79% 861 75%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Silver

Gold

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost
160 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

18' SFD, Richmond VA base

SF floor area 1,695 bronze

SF driveway 405 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity Cost New

ReferenceEst. LifeReference

base bronze silver gold emerald

Appliances

D/W 300 N 9 D

D/W, Estar 300 N 9 D 1000.00 1000.00 1000.00 1000.00 1000.00

Dryer, elec. 600 N 13 D none supplied

Range 600 N 13 D 1384.62 1384.62 1384.62 1384.62 1384.62

Refrigerator 800 N 13 D none supplied

Washer 600 N 10 D none supplied

Electrical

Incandescent Fixtures 600 N 10 D 1800.00 1800.00 1800.00 1800.00 1800.00

Compact Flourescent Fixtures 600 N 10 D

HVAC

Air handler, move from attic Q 15 D 0.00 0.00 0.00 0.00 0.00

Heat pump, 13 Seer/7.7 AFUE - 2 ton 3,413 Q 15 D 6825.06 6825.06

Heat Pump, 16 Seer/9.0 AFUE not 13 4,884 Q 15 D 9768.62 9768.62

Heat Pump, 18 Seer/9.5 AFUE not 13 6,920 Q 15 D 13839.71

Ducts, Sealed 1,450 Q 10 D

Thermostat, prog. 50 N 35 D

Insulation

Cellulose, R49 not R38 791 Q 77 D 308.36 308.36

Cellulose, R60 not R38 1,298 Q 77 D 505.67

Foam, rigid R-5 sheath 2,849 Q 77 R 1109.83 1109.83

Foam, rigid R-10 sheath 5,697 Q 77 R 2219.67

Plumbing Appliances & Fixtures

W/H, elec. .92 0 11 D 0.00 0.00

W/H, elec. .98,tkls. not .92 0 12 T 0.00

ICS Solar H/W w. .98 tkls not .92 4,500 13 10384.62 10384.62

Siding

Fiber cement 0 50 J

Vinyl 0 77 D

11,010 11,010 15,371 25,756 31,134

30 year Lifetime Replacement Cost
APPENDIX A 161

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated from 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating cos

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

ns

vels Unit Avg. Bayou La Batre, Alabama

Average Daily Per Capita Usage in Gallons3

Per Capita Daily Savings (% of Avg.) Base Bronze Silver Gold Emerald

Wash1 gal/load 7.3 1.0

tar1 4.9 32.4% 0.3 0.3 0.3 0.3 0.3

Wash2 gal/load 42.5 11.6 none supplied

tar2 gal/load 26.8 37.0%

ctor > 6.02 gal/load 18.0 57.6%

gpm 2.5 11.6

2.5 gpm 2.3 10.0% 1.2

2.0 gpm 1.8 28.0% 3.2 3.2 3.2 3.2

pm gpm 2.2 10.9 x

5 gpm 1.5 31.8% 3.5 3.5 3.5 3.5

pf gpf 1.6 18.5 x x

8 gpf 1.3 20.0% 3.7 3.7 3.7

Baths 1.2 0.0% x x x x xOther 1.6 0.0% x x x x xTotal (gpd/occ) 56.4 n/a 1.5 7.0 10.7 10.7 10.7

Percent Savings Over Average Daily PC 2.6% 12.5% 19.0% 19.0% 19.0%

gpf=gallons per flush; gpd/occ=gallons per day per occupant; PC=Per Capita

mal Wash and Eco Wash.

x.cfm?c=clotheswash.pr_tips_clothes_washers

water efficiency in gallons of water consumed per cubic foot of capacity. The lower the WF, the more water efficient the clothes 

approximately 45% more water efficient than a non-energy star model.)

the ENERGY STAR qualified product list of laundry per week, larger front-loading washers use only 16-20 gallons of water per load, compared to a conventional top-load 

ns per load. Factoring in the capacity advantage of a large front-loader, (almost twice the load-size of a conventional top-loader), 

ared to 80-90 gallons to get the same amount of laundry cleaned....The ENERGY STAR® logo indicates that a particular washing 

US Department of Energy's highest minimum efficiency standards for energy-efficient washers by a at least minimum of 37%.

energycenter.org/home/appliances/washers.html

erdnn/Default.aspx?tabid=85

e and Conservation , Amy Vickers

Toilets DishwasherWashing MachineShowersFaucets
APPENDIX A 163

APPENDIX A 

COST DETAILS

B. Seattle, Washington
164 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

2 story stack multi, Seattle WA base

SF floor area 910 bronze

SF driveway 405 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity

Annual 

Maint. 

Cost Per 

Year

Reference

base bronze silver gold emerald

Appliances

D/W, Estar 28 MA 28.00 28.00 28.00 28.00 28.00

Dryer, elec. 52 MA 52.00 52.00 52.00 52.00 52.00

Range, gas 42 MA 42.00 42.00 42.00 42.00 42.00

Refrigerator 74 MA 73.73 73.73

Refrigerator, Estar 74 MA 73.73 73.73 73.73

Washer 52 MA 52.00 52.00

Washer, EStar 52 MA 52.00 52.00 52.00

Electrical

Incandescent Fixtures 0.00 0.00 0.00

Compact Flourescent Fixtures 0.00 0.00

HVAC

Boiler in conditioned 0

Boiler 0.90 ef 75 MA 75.00 75.00

Boiler 0.94 ef, not 0.90 75 MA 75.00 75.00 75.00

Thermostat, prog. 0 0.00 0.00 0.00

Insulation

Foam, rigid R-5 sheath 0 0.00 0.00 0.00

Foam, rigid R-10 sheath 0 0.00 0.00

Plumbing Appliances & Fixtures

Boiler 0.90 ef S see hvac see hvac

Boiler 0.94 ef, not 0.90 S see hvac

Solar H/W w/ 0.94 boiler 0 see hvac see hvac

Siding

Fiber cement 0 A 0.00 0.00 0.00 0.00 0.00

323 323 323 323 323

Annual Maintenance Cost
Seattle, Washington

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 000 00 00 00

Heating Cost 148 132 16 11% 99 49 33% 101 47 32% 74 74 50%Hot Water Heating Cost 97 97 0 0% 94 3 3% 36 61 63% 35 62 64%HVAC & hwh Savings N/A 16 52 108 136

Appliances/MELs Savings N/A 0 13 35 35

Appliances/MELs Cost 370 370 357 335 335

HVAC & HWH sub-total 245 229 7% 193 21% 137 44% 109 56%

Grand Total 615 599 97% 550 89% 472 77% 444 72%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Silv

Gold

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost
166 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

2 story stack multi, Seattle WA base

SF floor area 910 bronze

SF driveway 405 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity

Cost 

New

ReferenceEst. LifeReference

base bronze silver gold emerald

Appliances

D/W, Estar 300 N 9 D 1000.00 1000.00 1000.00 1000.00 1000.00

Dryer, elec. 600 N 13 D 1384.62 1384.62 1384.62 1384.62 1384.62

Range, gas 600 N 13 D 1384.62 1384.62 1384.62 1384.62 1384.62

Refrigerator 800 N 13 D 1846.15 1846.15

Refrigerator, Estar 1,200 N 13 D 2769.23 2769.23 2769.23

Washer 600 N 10 D 1800.00 1800.00

Washer, EStar 1,100 N 10 D 3300.00 3300.00 3300.00

Electrical

Incandescent Fixtures 600 N 10 D 1800.00 1800.00 1800.00

Compact Flourescent Fixtures 600 N 10 D 1800.00 1800.00

HVAC

Boiler in conditioned 0 Q 15 D

Boiler 0.90 ef 3,046 Q 15 D 6092.80 6092.80

Boiler 0.94 ef, not 0.90 3,584 Q 15 D 7168.00 7168.00 7168.00

Thermostat, prog. 50 N 35 D

Insulation

Foam, rigid R-5 sheath 1,280 Q 77 R 498.52 498.52 498.52

Foam, rigid R-10 sheath 2,559 Q 77 R 997.04 997.04

Plumbing Appliances & Fixtures

Boiler 0.90 ef see hvac 11 D see hvac see hvac

Boiler 0.94 ef, not 0.90 see hvac 11 D see hvac

Solar H/W w/ 0.94 boiler 6,500 13 see hvac see hvac

Siding

Fiber cement 0 50 J 0.00 0.00 0.00 0.00 0.00

15,308 15,308 19,305 20,302 20,302

30 year Lifetime Replacement Cost
APPENDIX A 167

A Power wash and 1 coat repaint for fibercement every 9 years.

C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

I NAHB Report says lifetime

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated from 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

A Power wash and 1 coat repaint for fibercement every 9 years.

C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

I NAHB Report says lifetime

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating cost

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

ns

A

vels Unit Avg. Bayou La Batre, Alabama

Average Daily Per Capita Usage in Gallons3

Per Capita Daily Savings (% of Avg.) Base Bronze Silver Gold Emerald

Wash1 gal/load 7.3 1.0

tar1 4.9 32.4% 0.3 0.3 0.3 0.3 0.3

Wash2 gal/load 42.5 11.6 x x

tar2 gal/load 26.8 37.0% 4.3 4.3

ctor > 6.02 gal/load 18.0 57.6% 6.7

gpm 2.5 11.6 x

2.5 gpm 2.3 10.0% 1.2

2.0 gpm 1.8 28.0% 3.2 3.2 3.2

pm gpm 2.2 10.9 x

5 gpm 1.5 31.8% 3.5 3.5 3.5 3.5

pf gpf 1.6 18.5 x x

8 gpf 1.3 20.0% 3.7 3.7 3.7

Baths 1.2 0.0% x x x x xOther 1.6 0.0% x x x x xTotal (gpd/occ) 56.4 n/a 0.3 5.0 15.0 15.0 17.4

Percent Savings Over Average Daily PC 0.6% 8.8% 26.7% 26.7% 30.9%

gpf=gallons per flush; gpd/occ=gallons per day per occupant; PC=Per Capita

mal Wash and Eco Wash.

x.cfm?c=clotheswash.pr_tips_clothes_washers

water efficiency in gallons of water consumed per cubic foot of capacity. The lower the WF, the more water efficient the clothes 

approximately 45% more water efficient than a non-energy star model.)

the ENERGY STAR qualified product list of laundry per week, larger front-loading washers use only 16-20 gallons of water per load, compared to a conventional top-load 

ns per load. Factoring in the capacity advantage of a large front-loader, (almost twice the load-size of a conventional top-loader), 

ared to 80-90 gallons to get the same amount of laundry cleaned....The ENERGY STAR® logo indicates that a particular washing 

US Department of Energy's highest minimum efficiency standards for energy-efficient washers by a at least minimum of 37%.

energycenter.org/home/appliances/washers.html

erdnn/Default.aspx?tabid=85

e and Conservation , Amy Vickers

Toilets DishwasherWashing MachineShowersFaucets
APPENDIX A 169

APPENDIX A

COST DETAILS

4 — Climate Zone #5

A. Akron, Ohio – Townhouse
170 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Akron, OH - TC Project 14-A-08 - TownHouse - A unit base

SF floor area 1296 bronze

SF driveway 250 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity

Annual 

Maint. Cost 

Per Year

Reference

base bronze silver gold emerald

Appliances

D/W, Estar 28 MA 28.00 28.00 28.00 28.00 28.00

Refrigerator, Estar 74 MA 73.73 73.73 73.73 73.73 73.73

Washer/Dryer Stack, Estar 62 MA 62.00 62.00 62.00 62.00 62.00

Electrical

Incandescent Fixtures

Compact Flourescent Fixtures 0.00 0.00 0.00 0.00 0.00

HVAC

Air handler, move from attic 0

Furnace, 92% AFUE not 78% 40-50 kbtu 156 MA 156.00 156.00 156.00 156.00

Furnace, 96% AFUE not 78% 40-50 kbtu 156 MA 156.00

Ducts, Sealed 0 0.00 0.00 0.00 0.00

Thermostat, prog. 0 0.00 0.00 0.00 0.00

Insulation

Cellulose, R49 not R38 0

Cellulose, R60 not R38 0

Plumbing Appliances & Fixtures

Water heater, gas 0.59 47 47.00 47.00

W/H. gas. .82 tankless not .59 47

W/H. gas. .92 tankless not .59 47 47.00

W/H. gas. .92 tankless not .59 w/Closed Loop Solar 94 94.00 94.00

Siding

Brick

Fiber cement 0 A 0.00 0.00 0.00 0.00 0.00

367 367 367 414 414

Annual Maintenance Cost
Akron, OhioA - Unit (townhouse)

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 22 20 2 9% 21 1 5% 20 2 9% 14 8 36%Heating Cost 485 420 65 13% 335 150 31% 273 212 44% 215 270 56%Hot Water Heating Cost 143 144 -1 -1% 82 61 43% 24 119 83% 19 124 87%HVAC & hwh Savings N/A 66 212 333 402

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 508 508 508 508 508

HVAC & HWH sub-total 650 584 10% 438 33% 317 51% 248 62%

Grand Total 1158 1092 94% 946 82% 825 71% 756 65%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Silve

Gold

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELs SavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost
172 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Akron, OH - TC Project 14-A-08 - TownHouse - A unit base

SF floor area 1296 bronze

SF driveway 250 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity Cost New

ReferenceEst. LifeReference

base bronze silver gold emerald

Appliances

D/W, Estar 300 N 9 D 1000.00 1000.00 1000.00 1000.00 1000.00

Refrigerator, Estar 800 N 13 D 1846.15 1846.15 1846.15 1846.15 1846.15

Washer/Dryer Stack, Estar 1,300 N 10 D 3900.00 3900.00 3900.00 3900.00 3900.00

Electrical

Incandescent Fixtures 600 N 10 D

Compact Flourescent Fixtures 600 N 10 D 1800.00 1800.00 1800.00 1800.00 1800.00

HVAC

Air handler, move from attic 680 Q 15 D

Furnace, 92% AFUE not 78% 40-50 kbtu 1,474 Q 15 D 2947.97 2947.97 2947.97 2947.97

Furnace, 96% AFUE not 78% 40-50 kbtu 2,445 Q 15 D 4889.80

Ducts, Sealed 1,450 Q 10 D

Thermostat, prog. 50 N 35 D

Insulation

Cellulose, R49 not R38 605 Q 77 D

Cellulose, R60 not R38 992 Q 77 D

Plumbing Appliances & Fixtures

Water heater, gas 0.59 528 10 D 1584.00 1584.00

W/H. gas. .82 tankless not .59 822 13 D

W/H. gas. .92 tankless not .59 1,267 13 D 2923.85

W/H. gas. .92 tankless not .59 w/Closed Loop Solar 7,767 13 D 17923.85 17923.85

Siding

Brick 77 D

Fiber cement 0 50 J 0.00

13,078 13,078 14,418 29,418 31,360

30 year Lifetime Replacement Cost
APPENDIX A 173

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated from 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolate

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating cos

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Calculations

ct 14-A-08 - TownHouse - A unit

Usage Levels Unit Avg. Townhouse, Akron, OH

Average Daily Per Capita Usage in Gallons3

Per Capita Daily Savings as % of Avg. Base Bronze Silver Gold Emerald

Normal Wash1 gal/load 7.3 Dishwasher 1.0

Energy Star1 4.9 32.4% 0.3 0.3 0.3 0.3 0.3

Normal Wash2 gal/load 42.5 Washing Machine 11.6

Energy Star2 gal/load 26.8 37.0% 4.3 4.3 4.3 4.3 4.3Water Factor > 6.02 gal/load 18.0 57.6%

Std-2.5 gpm 2.5 Showers 11.6

flow 2.0-2.5 gpm 2.3 10.0% 1.2flow 1.6-2.0 gpm 1.8 28.0% 3.2 3.2 3.2 3.2

Std-2.2 gpm gpm 2.2 Faucets 10.9

gpm > 1.5 gpm 1.5 31.8% 3.5 3.5Std-1.6 gpf gpf 1.6 Toilets 18.5gpf > 1.28 gpf 1.3 20.0% 3.7 3.7

Baths 1.2 0.0%Other 1.6 0.0%Total (gpd/occ) 56.4 n/a 5.8 7.9 7.9 15.0 15.0Percent Savings Over Average Daily PC 10.2% 13.9% 13.9% 26.7% 26.7%

er minute; gpf=gallons per flush; gpd/occ=gallons per day per occupant 

mal Wash and Eco Wash.

ex.cfm?c=clotheswash.pr_tips_clothes_washers

measures water efficiency in gallons of water consumed per cubic foot of capacity. The lower the WF, the more water efficient the clothes 

r of 6.0 is approximately 45% more water efficient than a non-energy star model.)

e listed on the ENERGY STAR qualified product list

d 10 loads of laundry per week, larger front-loading washers use only 16-20 gallons of water per load, compared to a conventional top-load 

40-45 gallons per load. Factoring in the capacity advantage of a large front-loader, (almost twice the load-size of a conventional top-loader), 

lons compared to 80-90 gallons to get the same amount of laundry cleaned....The ENERGY STAR® logo indicates that a particular washing 

ceeds the US Department of Energy's highest minimum efficiency standards for energy-efficient washers by a at least minimum of 37%.

consumerenergycenter.org/home/appliances/washers.html

umerdnn/Default.aspx?tabid=85

 Water Use and Conservation, Amy Vickers
APPENDIX A 175

APPENDIX A 

COST DETAILS

B. Akron, Ohio – Single Family Home
176 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Akron, OH - TC Project 14-A-08 - Single Family - D unit base

SF floor area 1,908 bronze

SF driveway 405 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity

Annual 

Maint. Cost 

Per Year

Reference

base bronze silver gold emerald

Appliances

D/W, Estar 28 MA 28.00 28.00 28.00 28.00 28.00

Refrigerator, Estar 74 MA 73.73 73.73 73.73 73.73 73.73

Washer/Dryer Stack, Estar 62 MA 62.00 62.00 62.00 62.00 62.00

Electrical

Incandescent Fixtures

Compact Flourescent Fixtures 0.00 0.00 0.00 0.00 0.00

HVAC

Air handler, move from attic 0

Furnace, 92% AFUE not 78% 40-50 kbtu 156 MA 156.00 156.00 156.00 156.00

Furnace, 96% AFUE not 78% 40-50 kbtu 156 MA 156.00

Ducts, Sealed 0 0.00 0.00 0.00 0.00

Thermostat, prog. 0 0.00 0.00 0.00 0.00

Insulation

Cellulose, R49 not R38 0

Cellulose, R60 not R38 0

Foam, rigid R-5 sheath 0

Foam, rigid R-10 sheath 0

Plumbing Appliances & Fixtures

Water heater, gas 0.59 47 47.00 47.00

W/H. gas. .82 tankless not .59 47

W/H. gas. .92 tankless not .59 47 47.00

W/H. gas. .92 tankless not .59 w/Closed Loop Solar 94 94.00 94.00

Siding

Brick

Fiber cement 0 A 0.00 0.00 0.00 0.00 0.00

367 367 367 414 414

Annual Maintenance Cost
Akron, OhioD - Unit (single family home)

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 43 40 3 7% 40 3 7% 39 4 9% 23 20 47%Heating Cost 749 679 70 9% 543 206 28% 422 327 44% 219 530 71%Hot Water Heating Cost 182 182 0 0% 114 68 37% 39 143 79% 39 143 79%HVAC & hwh Savings N/A 73 277 474 693

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 711 711 711 711 711

HVAC & HWH sub-total 974 901 7% 697 28% 500 49% 281 71%

Grand Total 1685 1612 96% 1408 84% 1211 72% 992 59%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Silv

Gold

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELs SavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost
178 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Akron, OH - TC Project 14-A-08 - Single Family - D unit base

SF floor area 1,908 bronze

SF driveway 405 silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity

Cost 

New

ReferenceEst. LifeReference

base bronze silver gold emerald

Appliances

D/W, Estar 300 N 9 D 1000.00 1000.00 1000.00 1000.00 1000.00

Refrigerator, Estar 800 N 13 D 1846.15 1846.15 1846.15 1846.15 1846.15

Washer/Dryer Stack, Estar 1,300 N 10 D 3900.00 3900.00 3900.00 3900.00 3900.00

Electrical

Incandescent Fixtures 600 N 10 D

Compact Flourescent Fixtures 600 N 10 D 1800.00 1800.00 1800.00 1800.00 1800.00

HVAC

Air handler, move from attic 680 Q 15 D

Furnace, 92% AFUE not 78% 40-50 kbtu 1,474 Q 15 D 2947.97 2947.97 2947.97 2947.97

Furnace, 96% AFUE not 78% 40-50 kbtu 2,445 Q 15 D 4889.80

Ducts, Sealed 1,450 Q 10 D

Thermostat, prog. 50 N 35 D

Insulation

Cellulose, R49 not R38 891 Q 77 D

Cellulose, R60 not R38 1,461 Q 77 D

Foam, rigid R-5 sheath 0 Q 77 R

Foam, rigid R-10 sheath 0 Q 77 R

Plumbing Appliances & Fixtures

Water heater, gas 0.59 528 10 D 1584.00 1584.00

W/H. gas. .82 tankless not .59 822 13 D

W/H. gas. .92 tankless not .59 1,267 13 D 2923.85

W/H. gas. .92 tankless not .59 w/Closed Loop Solar 7,767 13 D 17923.85 17923.85

Siding

Brick 77 D

Fiber cement 0 50 J 0.00

13,078 13,078 14,418 29,418 31,360

30 year Lifetime Replacement Cost
APPENDIX A 179

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated from 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

culations

4-A-08 - Single Family - D unit

age Levels Unit Avg. Single Family, Akron, OH

Average Daily Per Capita Usage in Gallons3

Per Capita Daily Savings as % of Avg. Base Bronze Silver Gold Emerald

rmal Wash1 gal/load 7.3 Dishwasher 1.0

ergy Star1 4.9 32.4% 0.3 0.3 0.3 0.3 0.3

rmal Wash2 gal/load 42.5 Washing Machine 11.6

ergy Star2 gal/load 26.8 37.0% 4.3 4.3 4.3 4.3 4.3

ater Factor > 6.02 gal/load 18.0 57.6%

-2.5 gpm 2.5 Showers 11.6

w 2.0-2.5 gpm 2.3 10.0%

w 1.6-2.0 gpm 1.8 28.0% 3.2 3.2 3.2 3.2 3.2

-2.2 gpm gpm 2.2 Faucets 10.9

m > 1.5 gpm 1.5 31.8% 3.5 3.5 3.5 3.5 3.5

-1.6 gpf gpf 1.6 Toilets 18.5

 > 1.28 gpf 1.3 20.0% 3.7 3.7

Baths 1.2 0.0%Other 1.6 0.0%Total (gpd/occ) 56.4 n/a 11.3 11.3 11.3 15.0 15.0Percent Savings Over Average Daily PC 20.1% 20.1% 20.1% 26.7% 26.7%
APPENDIX A 181

APPENDIX A 

COST DETAILS

C. Cuyahoga, Ohio
182 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Valley View Apartments (Cuyahoga, OH)

1 bedroom apt.

2/17/2010

SF floor area 658

base

bronze

silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity

Annual 

Maint. 

Cost Per 

Year

Reference

base bronze silver gold emerald

Appliances

D/W, Estar 28 MA 28.00 28.00 28.00 28.00 28.00

Dryer, elec. 52 MA 52.00 52.00 52.00 52.00 52.00

Range 42 MA 42.00 42.00 42.00 42.00 42.00

Refrigerator 74 MA 73.73 73.73 73.73 73.73 73.73

Washer 52 MA 52.00 52.00 52.00 52.00

Washer, EStar 87 MA 86.67

Electrical

Incandescent Fixtures 0 0.00

50% CFLs 0 0.00 0.00 0.00 0.00

HVAC

Heat pump, 13 Seer/7.7 AFUE - 1.5 ton 156 MA 156.00

Heat pump, 13 Seer/8.2 AFUE - 1.5 ton 156 MA 156.00

A/C, 14 SEER, 1.5 ton 78 MA 78.00 78.00

A/C, 16 SEER, 1.5 ton 78 MA 78.00

Furnace, Gas, 96% 78 MA 78.00

Boiler, Gas, 95% 0 ee 74.84 74.84

Ducts, Sealed 0 0.00 0.00 0.00 0.00 0.00

Thermostat, prog. 0 0.00 0.00 0.00 0.00 0.00

Plumbing Appliances & Fixtures

W/H, elec. .92 47 S 47.00 47.00

W/H, gas, 65% 47 S 47.00

(with dual boiler) CL Solar H/W 24sf 89 est 89.33

(with dual boiler) CL Solar H/W 64sf 179 est 178.67

451 451 451 490 614

Annual Maintenance Cost
Cuyahoga, Ohio

Electric Gas

Annual Energy Summary Yr $ Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings Cooling Cost 88 88 73 15 17% 59 29 33% 63 25 28% 60 28 

Heating Cost 105 83 58 47 45% 78 27 26% 29 54 65% 20 63 Hot Water Heating Cost 257 132 257 0 0% 145 112 44% 42 90 68% 30 102 HVAC & hwh Savings N/A N/A 62 168 169 193

Appliances/MELs Savings N/A N/A 80 80 80 80

Appliances/MELs Cost 673 673 593 593 593 593

HVAC & HWH sub-total 450 303 388 14% 282 37% 134 56% 110 

Grand Total 1123 976 981 87% 875 78% 727 74% 703 

Data based on Energy Gauge - Annual Energy Summary. Not ComplianceThis apartment was energy source changed from electric to gas. Compliance increase is based on same source

Emerald

Base

Bronze Silver Gold

Base Cost

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Silv

Gold

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELs SavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost
184 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Valley View Apartments (Cuyahoga, OH)

1 bedroom apt.

2/17/2010

SF floor area 658

base

bronze

silver

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html gold

emerald

Component Subcategory/ Activity Cost New

Reference

Est. LifeReference

base bronze silver gold emerald

Appliances

D/W, Estar 300 N 9 D 1000.00 1000.00 1000.00 1000.00 1000.00

Dryer, elec. 600 N 13 D 1384.62 1384.62 1384.62 1384.62 1384.62

Range 600 N 13 D 1384.62 1384.62 1384.62 1384.62 1384.62

Refrigerator 800 N 13 D 1846.15 1846.15 1846.15 1846.15 1846.15

Washer 600 N 10 D 1800.00 1800.00 1800.00 1800.00

Washer, EStar 1,000 10 D 3000.00

Electrical

serutxiF tnecsednacnI N004 10 D 1200.00

50% CFLs 0 bb 10 bb 1200.00 1200.00 1200.00 1200.00

HVAC

Heat pump, 13 Seer/7.7 AFUE - 1.5 ton 2,560 Q 15 D 5119.50

Heat pump, 13 Seer/8.2 AFUE - 1.5 ton 3,151 dd 15 D 6302.00

A/C, 14 SEER, 1.5 ton 1,031 dd 15 D 2062.00 2062.00

A/C, 16 SEER, 1.5 ton 1,946 dd 15 D 3892.00

Furnace, Gas, 96% 2,445 dd 15 D 4890.00

Boiler, Gas, 95% 3,584 est 15 ee 7168.96 7168.96

Ducts, Sealed 651 Q 10 D

Thermostat, prog. 50 N 35 D

Plumbing Appliances & Fixtures

W/H, elec. .92 408 11 D 1113.00 1113.00

W/H, gas, 65% 350 10 D 1050.00

(with dual boiler) CL Solar H/W 24sf 4,500 20 6750.00

(with dual boiler) CL Solar H/W 64sf 6,500 ff 20 D 9750.00

14,848 16,030 16,617 24,596 30,626

30 year Lifetime Replacement Cost
APPENDIX A 185

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated from 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpola

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating c

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

lations

uyahoga, OH)

e Levels Unit Avg. Apartment Cuyahoga OH

Average Daily Per Capita Usage in Gallons3

Per Capita Daily Savings as % of Avg. Base Bronze Silver Gold Emerald

al Wash1 gal/load 7.3 Dishwasher 1.0

gy Star1 4.9 32.4% 0.3 0.3 0.3 0.3 0.3

al Wash2 gal/load 42.5 Washing Machine 11.6

gy Star2 gal/load 26.8 37.0%

r Factor > 6.02 gal/load 18.0 57.6% 6.7

.5 gpm 2.5 Showers 11.6

2.0-2.5 gpm 2.3 10.0%1.6-2.0 gpm 1.8 28.0% 3.2 3.2 3.2 3.2 3.2

.2 gpm gpm 2.2 Faucets 10.9

> 1.5 gpm 1.5 31.8% 3.5 3.5 3.5 3.5 3.5

.6 gpf gpf 1.6 Toilets 18.5

 1.28 gpf 1.3 20.0% 3.7 3.7 3.7 3.7

Baths 1.2 0.0%Other 1.6 0.0%Total (gpd/occ) 56.4 n/a 7.0 10.7 10.7 10.7 17.4Percent Savings Over Average Daily PC 12.5% 19.0% 19.0% 19.0% 30.9%

nute; gpf=gallons per flush; gpd/occ=gallons per day per occupant 

res water efficiency in gallons of water consumed per cubic foot of capacity. The lower the WF, the more water efficient the clothes 

.0 is approximately 45% more water efficient than a non-energy star model.)

ed on the ENERGY STAR qualified product list

loads of laundry per week, larger front-loading washers use only 16-20 gallons of water per load, compared to a conventional top-load 

 gallons per load. Factoring in the capacity advantage of a large front-loader, (almost twice the load-size of a conventional top-loader), 

compared to 80-90 gallons to get the same amount of laundry cleaned....The ENERGY STAR® logo indicates that a particular washing 

 the US Department of Energy's highest minimum efficiency standards for energy-efficient washers by a at least minimum of 37%.

umerenergycenter.org/home/appliances/washers.html

/consumerdnn/Default.aspx?tabid=85

er Use and Conservation, Amy Vickers
APPENDIX A 187

APPENDIX A 

COST DETAILS

5 — Retrofit – climate zone #4

A. Silver Spring, Maryland 

 i. Unit 1
188 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Glenville Unit 1 Zone 4

SF floor area 485

Component Subcategory/ Activity

Annual 

Maint. Cost 

Per Year

Reference

base bronze silver gold emerald

HVAC

A/C, 10 SEER, 1.5 ton 156 MA 156.00 156.00 156.00

A/C, 13 SEER, 1 ton 156 MA 156.00

A/C, 16 SEER, 1 ton 156 MA 156.00

Ducts, Conditioned 

Ducts, SealedX

Furnace, gas, 80% 156 MA 156.00 156.00 156.00

Furnace, gas, 90% 156 MA 156.00

Furnace, gas, 96% 156 MA 156.00

Thermostat, prog. 0

Plumbing Appliances & Fixtures

W/H, gas, 56% 47 MA 47.00 47.00

W/h, gas, 65% 47 MA

W/h, gas, 82% tankless 47 MA 47.00 47.00 47.00

Total 359 359 359 359 359

Annual Maintenance Cost
Gaithersburg, MarylandRehab Unit 1

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 157 133 24 15% 133 24 15% 107 50 32% 85 72 46%Heating Cost 612 390 222 36% 390 222 36% 349 263 43% 325 287 47%Hot Water Heating Cost 399 399 0 0% 178 221 55% 178 221 55% 178 221 55%HVAC & hwh Savings N/A 246 467 534 580

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 791 791 791 791 791

HVAC & HWH sub-total 1168 922 21% 701 40% 634 46% 588 50%

Grand Total 1959 1713 87% 1492 76% 1425 73% 1379 70%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Silve

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost
190 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Glenville Unit 1 Zone 4

SF floor area 485

Component Subcategory/ Activity Cost New

Reference

Est. Life

Reference

base bronze silver gold emerald

HVAC

A/C, 10 SEER, 1.5 ton 1,200 Q 10 D 3600.00 3600.00 3600.00

A/C, 13 SEER, 1.5 ton 1,203 Q 10 D 3609.00

A/C, 16 SEER, 1 ton 2,401 Q 10 D 7203.00

Ducts, Conditioned N 35 D

Ducts, SealedX Q 10 D

Furnace, gas, 80% 1,020 Q 18 D 1700.00 1700.00 1700.00

Furnace, gas, 90% 1,354 Q 18 D 2256.67

Furnace, gas, 96% 2,933 Q 18 D 4888.33

Thermostat, prog. N 35 D

Plumbing Appliances & Fixtures

W/H, gas, 56% 500 10 D 1500.00 1500.00

W/h, gas, 65% 650 10 D

W/h, gas, 82% tankless 1,400 15 J 2800.00 2800.00 2800.00

Total 6,800 6,800 8,100 8,666 14,891

30 year Lifetime Replacement Cost
APPENDIX A 191

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated from 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

X Energy usage improvement comes from building air seal as well as duct seal.
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

D

Unit Avg.

Per Capita Daily Savings (% of Avg.) Base Usage Bronze Silver Gold Emerald

gal/load 7.3 Dishwasher; None

4.9 Dishwasher; Estar 32.4%

gal/load 42.5 Washing Machine x xxgal/load 26.8 Estar 37.0% 4.3

 6.02 gal/load 18.0 Estar; watersaver 57.6% 6.7

gpm 2.5 Shower; standardgpm 2.0 Shower; 2.0-2.5 gpm 20.0% 2.3

flow gpm 1.6 Shower; 1.6 gpm 36.0% 4.2 4.2 4.2 4.2

gpm 2.2 Faucets; standardgpm 3.0 -36.4% (4.0)

flow gpm 1.0 54.5% 5.9 5.9 5.9 5.9

gpm 2.0 9.1% x x

flow gpm 1.0 54.5% 5.9 5.9 5.9

pf gpf 2.5 Toilets 

gpf 1.6 Low Flow 36.0% 6.7 6.7 6.7 6.7

gpf 1.3 Dual Flush Toilet 48.80% 9.0

BathsOther

gpd savings 5.0 16.8 22.7 27.0 31.8

Total (gpd/occ) 51.4 39.6 33.7 29.4 24.6

23% 34% 43% 52%

allons per flush; gpd/occ=gallons per day per occupant; PC=Per Capita

Wash and Eco Wash.

?c=clotheswash.pr_tips_clothes_washers

efficiency in gallons of water consumed per cubic foot of capacity. The lower the WF, the more water efficient the clothes 

ximately 45% more water efficient than a non-energy star model.)

NERGY STAR qualified product list

undry per week, larger front-loading washers use only 16-20 gallons of water per load, compared to a conventional top-load 

r load. Factoring in the capacity advantage of a large front-loader, (almost twice the load-size of a conventional top-loader), 

o 80-90 gallons to get the same amount of laundry cleaned....The ENERGY STAR® logo indicates that a particular washing 

partment of Energy's highest minimum efficiency standards for energy-efficient washers by a at least minimum of 37%.

ycenter.org/home/appliances/washers.html

/Default.aspx?tabid=85

Conservation , Amy Vickers

eration.org/consumer/default.php/cPath/3499_3486_266

% savings over base home
APPENDIX A 193

APPENDIX A 

COST DETAILS

 ii. Unit 2
194 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Glenville Unit 2 Zone 4

Component Subcategory/ Activity

Annual 

Maint. Cost 

Per Year

Reference

base bronze silver gold emerald

HVAC

A/C, 13 SEER, 1.5 ton 156 MA 156.00 156.00 156.00

A/C, 15 SEER, 1.5 ton 156 MA 156.00 156.00

Ducts, Conditioned 

Ducts, SealedX 0

Heat Pump, 7.7 hspf 156 MA 156.00 156.00 156.00

Heat Pump, 9.0 hspf 156 MA 156.00 156.00

Thermostat, prog. 0

Plumbing Appliances & Fixtures

W/H, gas, 58% 47 MA 47.00

W/H, gas, 60% 47 MA 47.00

W/h, gas, 82% tankless 47 MA 47.00 47.00 47.00

ICS Solar H/W w. 0.82 tkls 94 MA 94.00

Total 359 359 359 359 453

Annual Maintenance Cost
Gaithersburg, MarylandRehab Unit 2

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 163 144 19 12% 144 19 12% 121 42 26% 121 42 26%Heating Cost 557 406 151 27% 406 151 27% 353 204 37% 353 204 37%Hot Water Heating Cost 399 348 51 13% 178 221 55% 178 221 55% 103 296 74%HVAC & hwh Savings N/A 221 391 467 542

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 791 791 791 791 791

HVAC & HWH sub-total 1119 898 20% 728 35% 652 42% 577 48%

Grand Total 1910 1689 88% 1519 80% 1443 76% 1368 72%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Silve

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost
196 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Glenville Unit 2 Zone 4

Component Subcategory/ Activity Cost New

Reference

Est. Life Reference

base bronze silver gold emerald

HVAC

A/C, 13 SEER, 1.5 ton 2,576 Q 10 D 7728.00 7728.00 7728.00

A/C, 15 SEER, 1.5 ton 4,375 Q 10 D 13125.00 13125.00

Ducts, Conditioned N 35 D

Ducts, SealedX Q 10 D

Heat Pump, 7.7 hspf see a/c Q 10 D see a/c see a/c see a/c

Heat Pump, 9.0 hspf see a/c Q 18 D see a/c see a/c

Thermostat, prog. N 35 D

Plumbing Appliances & Fixtures

W/H, gas, 58% 472 15 D 944.00

W/H, gas, 60% 472 15 D 944.00

W/h, gas, 82% tankless 1,400 10 J 4200.00 4200.00 4200.00

ICS Solar H/W w. 0.82 tkls 4,500 13 10384.62

Total 8,672 8,672 11,928 17,325 27,710

30 year Lifetime Replacement Cost
APPENDIX A 197

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated from 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

X Energy usage improvement comes from building air seal as well as duct seal.

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated fr

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

X Energy usage improvement comes from building air seal as well as duct seal.
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Unit Avg.

Per Capita Daily Savings (% of Avg.) Base Usage Bronze Silver Gold Emerald

gal/load 7.3 Dishwasher; None

4.9 Dishwasher; Estar 32.4%

gal/load 42.5 Washing Machine x

gal/load 26.8 Estar 37.0% 4.3gal/load 18.0 Estar; watersaver 57.6% 6.7 6.7 6.7

gpm 2.5 Shower; standard

gpm 1.0 Shower; 1 gpm 60.0% 7.0 7.0 7.0 7.0 7.0gpm 1.6 Shower; 1.6 gpm 36.0%gpm 2.2 Faucets; standard

gpm 3.0 -36.4% (4.0)

gpm 1.6 Bathroom faucet 27.3% 3.0 3.0gpm 1.0 54.5% 5.9 5.9

gpm 2.0 Kitchen faucet, 2 gpm 9.1%

gpm 1.5 31.8% 3.5 3.5

gpm 1.0 Kitchen faucet, 1 gpm 54.5% 5.9 5.9 5.9

gpf 2.5 Toilets - 

gpf 1.6 Low Flow 36.0% 6.7 6.7 6.7 6.7

gpf 1.3 Dual Flush Toilet 48.8% 9.0

BathsOther

gpd savings 13.1 24.3 29.2 32.2 34.6

Total (gpd/occ) 43.3 32.0 27.2 24.2 21.8

26% 37% 44% 50%

per flush; gpd/occ=gallons per day per occupant; PC=Per Capita

nd Eco Wash.

heswash.pr_tips_clothes_washers

cy in gallons of water consumed per cubic foot of capacity. The lower the WF, the more water efficient the clothes 

y 45% more water efficient than a non-energy star model.)

Y STAR qualified product list

er week, larger front-loading washers use only 16-20 gallons of water per load, compared to a conventional top-load 

 Factoring in the capacity advantage of a large front-loader, (almost twice the load-size of a conventional top-loader), 

0 gallons to get the same amount of laundry cleaned....The ENERGY STAR® logo indicates that a particular washing 

ent of Energy's highest minimum efficiency standards for energy-efficient washers by a at least minimum of 37%.

r.org/home/appliances/washers.html

lt.aspx?tabid=85

rvation , Amy Vickers

n.org/consumer/default.php/cPath/3499_3486_266

or dishwashing - On average, an automatic dishwasher uses 15 gallons of water per load.

0 gallons of water for the same amount of dishes.

when it is full. If your dishwasher has a water

es, do not rinse them under a running tap. Use

mit water use further by using paper plates and

y to keep water use for dishwashing to an average

http://www.ca.uky.edu/enri/kwam2000/pdf/40galfct.pdf

% savings over base home
APPENDIX A 199

APPENDIX A 

COST DETAILS

 iii. Unit 3
200 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Glenville Unit 3 Zone 4

Component Subcategory/ Activity

Annual 

Maint. Cost 

Per Year

Reference

HVAC base bronze silver gold emerald

A/C, 10 SEER, 1.5 ton 156 MA 156.00 156.00

A/C, 13 SEER, 1.5 ton 156 MA 156.00

A/C, 15 SEER, 1.5 ton 156 MA 156.00

A/C, 18 SEER, 1.5 ton 156 MA 156.00

Ducts, Conditioned 156 MA

Ducts, SealedX 156 MA

Furnace, gas, 80% 156 MA 156.00 156.00 156.00

Furnace, gas, 96% 156 MA 156.00 156.00

Thermostat, prog. 156 MA

Plumbing Appliances & Fixtures

W/H, gas, 58% 47 MA 47.00

W/H, gas, 62% 47 MA 47.00

W/h, gas, 82% tankless 47 MA 47.00 47.00 47.00

ICS Solar H/W w. 0.82 tkls 94 94.00

Total 359 359 359 359 453

Annual Maintenance Cost
Gaithersburg, MarylandRehab Unit 3

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings p

Cooling Cost 214 188 26 12% 150 64 30% 127 87 41% 102 112 Heating Cost 774 559 215 28% 559 215 28% 465 309 40% 465 309 Hot Water Heating Cost 373 324 49 13% 178 195 52% 178 195 52% 103 270 HVAC & hwh Savings N/A 290 474 591 691

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 791 791 791 791 791

HVAC & HWH sub-total 1361 1071 21% 887 35% 770 43% 670 

Grand Total 2152 1862 87% 1678 78% 1561 73% 1461 

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost
202 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Glenville Unit 3 Zone 4

cece

enen

erer

Component Subcategory/ Activity Cost New

efef

R

Est. Life R30 year Lifetime Replacement Cost

HVAC base bronze silver gold emerald

A/C, 10 SEER, 1.5 ton 1,200 Q 10 D 3600.00 3600.00

A/C, 13 SEER, 1.5 ton 1,203 Q 10 D 3609.00

A/C, 15 SEER, 1.5 ton 2,248 Q 10 D 6744.00

A/C, 18 SEER, 1.5 ton 4,148 Q 10 D 12444.00

Ducts, Conditioned D

Ducts, SealedX D

Furnace, gas, 80% 1,250 Q 18 D 2083.33 2083.33 2083.33

Furnace, gas, 96% 2,596 Q 18 D 4326.67 4326.67

Thermostat, prog. 35 D

Plumbing Appliances & Fixtures

W/H, gas, 58% 500 10 D 1500.00

W/H, gas, 62% 622 10 D 1866.00

W/h, gas, 82% tankless 1,400 Q 15 J 2800.00 2800.00 2800.00

ICS Solar H/W w. 0.82 tkls 4,500 13 10384.62

Total 7,183 7,549 8,492 13,871 29,955
APPENDIX A 203

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm

A

B



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated from 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

X Energy usage improvement comes from building air seal as well as duct seal.

B

C

D

E

F

G

H

I

J

K

L

M

MA

N

O

P

Q

R

S

T

U

V

W 

X

Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



http://www.kronotexusa.com/warranty.htm

NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

NAHB Report says lifetime

Manufacturer's warranty

Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

Based on purchase of a Maintenance Agreement

Costs developed via internet survey conducted Nov. 2009.

Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

Dryer has no estimated savings over any other.

ASHRAE Cost Database

Set even to life of vinyl siding (cladding).

Based on one hour per year to flush water tank, vacuum driveway, etc.

One manufacturer's warranty on heat exchanger. Bosch.

http://www.aceee.org/Consumerguide/waterheating.htm

Savings is reflected in operating cost.

ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

Energy usage improvement comes from building air seal as well as duct seal.
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Unit Avg.

Per Capita Daily Savings (% of Avg.) Base Usage Bronze Silver Gold Emerald

gal/load 7.3 Dishwasher; None

4.9 Dishwasher; Estar 32.4%

gal/load 42.5 Washing Machine xgal/load 26.8 Estar 37.0% 4.3 4.3 4.3

 6.02 gal/load 18.0 Estar; watersaver 57.6% 6.7

gpm 2.5 Shower; standardgpm 1.0 Shower; 2.0-2.5 gpm 60.0% 7.0 7.0 7.0 7.0 7.0

flow gpm 1.6 Shower; 1.6 gpm 36.0%

gpm 2.2 Faucets; standardgpm 2.5 -13.6% (1.5)

flow gpm 1.0 54.5% 5.9 5.9 5.9 5.9

gpm 2.5 -13.6% (1.5) (1.5)

flow gpm 1.0 54.5% 5.9 5.9 5.9

pf gpf 2.5 Toilets 

gpf 1.6 Low Flow 36.0% 6.7 6.7 6.7 6.7gpf 1.3 Dual Flush Toilet 48.80% 9.0

BathsOther

gpd savings 10.6 22.4 29.8 29.8 34.6

Total (gpd/occ) 45.7 34.0 26.6 26.6 21.8

26% 42% 42% 52%

allons per flush; gpd/occ=gallons per day per occupant; PC=Per Capita

Wash and Eco Wash.

?c=clotheswash.pr_tips_clothes_washers

efficiency in gallons of water consumed per cubic foot of capacity. The lower the WF, the more water efficient the clothes 

ximately 45% more water efficient than a non-energy star model.)

NERGY STAR qualified product list

undry per week, larger front-loading washers use only 16-20 gallons of water per load, compared to a conventional top-load 

r load. Factoring in the capacity advantage of a large front-loader, (almost twice the load-size of a conventional top-loader), 

o 80-90 gallons to get the same amount of laundry cleaned....The ENERGY STAR® logo indicates that a particular washing 

partment of Energy's highest minimum efficiency standards for energy-efficient washers by a at least minimum of 37%.

ycenter.org/home/appliances/washers.html

/Default.aspx?tabid=85

Conservation , Amy Vickers

eration.org/consumer/default.php/cPath/3499_3486_266

% savings over base home
APPENDIX A 205

APPENDIX A 

COST DETAILS

 iv. Unit 4
206 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Glenville Unit 4 Zone 4

Component Subcategory/ Activity

Annual 

Maint. 

Cost Per 

Year

Reference

base bronze silver gold emerald

HVAC

A/C, 10 SEER, 1.5 ton 156 MA 156.00 156.00

A/C, 13 SEER, 1.5 ton 156 MA 156.00

A/C, 15 SEER, 1 ton 156 MA 156.00

A/C, 16 SEER, 1 ton 156 MA 156.00

Ducts, Conditioned 156 MA

Ducts, Sealed 156 MA

Furnace, gas, 78% 156 MA 156.00 156.00 156.00

Furnace, gas, 92% 156 MA 156.00

Furnace, gas, 96% 156 MA 156.00

Thermostat, prog. 156 MA

Plumbing Appliances & Fixtures

W/H, gas, 54% 47 47.00

W/H, gas, 60% 47 47.00

W/h, gas, 82% tankless 47 47.00 47.00 47.00

ICS Solar H/W w. 0.82 tkls 94 94.00

Total 359 359 359 359 453

Annual Maintenance Cost
Gaithersburg, MarylandRehab Unit 4

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 305 269 36 12% 216 89 29% 181 124 41% 171 134 44%Heating Cost 793 581 212 27% 581 212 27% 493 300 38% 474 319 40%Hot Water Heating Cost 399 348 51 13% 178 221 55% 178 221 55% 103 296 74%HVAC & hwh Savings N/A 299 522 645 749

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 791 791 791 791 791

HVAC & HWH sub-total 1497 1198 20% 975 35% 852 43% 748 50%

Grand Total 2288 1989 87% 1766 77% 1643 72% 1539 67%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Silve

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost
208 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Operation, Maintenance and Lifetime Replacement Cost

Glenville Unit 4 Zone 4

Component Subcategory/ Activity Cost New

Reference

Est. Life

Reference

base bronze silver gold emerald

HVAC

A/C, 10 SEER, 1.5 ton 1,200 Q 10 D 3600.00 3600.00

A/C, 13 SEER, 1.5 ton 1,203 Q 10 D 3609.00

A/C, 15 SEER, 1 ton 2,248 Q 10 D 6744.00

A/C, 16 SEER, 1 ton 2,398 Q 10 D 7194.00

Ducts, Conditioned N D

Ducts, Sealed Q D

Furnace, gas, 78% 1020 18 D 1700.00 1700.00 1700.00 1700.00

Furnace, gas, 92% 1502 18 D

Furnace, gas, 96% 2633 18 D 4388.33

Thermostat, prog. 50 N 35 D

Plumbing Appliances & Fixtures

W/H, gas, 54% 500 10 D 1500.00

W/H, gas, 60% 550 10 D 1650.00

W/h, gas, 82% tankless 1,400 15 J 2800.00 2800.00 2800.00

ICS Solar H/W w. 0.82 tkls 4,500 13 80.00 80.00

Total 6,800 6,950 8,109 11,244 14,382

30 year Lifetime Replacement Cost
APPENDIX A 209

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated from 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating costs 

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html

A Power wash and 1 coat repaint for fibercement every 9 years.

http://www.sherwin-williams.com/pro/problem/tips/substrates/

B http://www.demesne.info/Home-Maintenance/Appliance-Life-Expectancy.htm 



C http://www.kronotexusa.com/warranty.htm

D NAHB/Bank of America Home Equity Study of Life Expectancy of Home Components, 2006. 

and, Study of Life Expectancy of Home Components, NAHB Economics Group and Bank of America, Feb. 2007.

Lifetime was defined by this reports authors as the average US life expectancy

E Sustainable Building, Bamboo Flooring, Publication 443-03-017, 2003. CWIMB.

http://www.ciwmb.ca.gov/Publications/GreenBuilding/43303017.doc

F http://www.conradfp.com/ns.shtml

Wolmanized process, long as house to original owner.

15-20 others. Use 20

G 25-year limited warranty - Upnor

http://www.uponor-usa.com/~/media/Files/Warranties/Plumbing.aspx

25-year limited warranty - Zurn

http://www.zurn.com/images/pdf/zpm08202.pdf

H 50-year limited warranty - CDA

http://www.copper.org/applications/plumbing/restools/bsp/50yr_wrrnty_itms.html

I NAHB Report says lifetime

J Manufacturer's warranty

K Rheem warranty for Professional Series is 8 years lmtd.

http://www.rheem.com/products/tank_water_heaters/electric_water_heaters/

L http://www.dauphincd.org/swm/BMPfactsheets/Porous%20Asphalt%20fact%20sheet.pdf

M http://www.asphaltmagazine.com/singlenews.asp?item_ID=1178&comm=0&list_code_int=mag01-int Indicates 20 years; set even with asphalt.

MA Based on purchase of a Maintenance Agreement

N Costs developed via internet survey conducted Nov. 2009.

O Power utility cost (EIA US average 2009) of less efficient model vs. operation cost of more efficient model based on actual utility usage as modeled or interpolated 

computer simulations in Energy Gauge. No calculation of possible water savings was calculated due to difficulty of capturing efficiency and widely fluctuating cost

for water service nationwide.

P Dryer has no estimated savings over any other.

Q ASHRAE Cost Database

R Set even to life of vinyl siding (cladding).

S Based on one hour per year to flush water tank, vacuum driveway, etc.

T One manufacturer's warranty on heat exchanger. Bosch.

U http://www.aceee.org/Consumerguide/waterheating.htm

V Savings is reflected in operating cost.

W ICS solar units typically are installed with a backup DHW source which is not included in this cost example.

http://www.eia.doe.gov/cneaf/electricity/epm/table5_6_b.html
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Unit Avg.

Per Capita Daily Savings (% of Avg.) Base Usage Bronze Silver Gold Emerald

gal/load 7.3 Dishwasher; None

4.9 Dishwasher; Estar 32.4%

gal/load 42.5 Washing Machine x x x

gal/load 26.8 Estar 37.0% 4.3

 6.02 gal/load 18.0 Estar; watersaver 57.6% 6.7

gpm 2.5 Shower; standard x

flow gpm 1.6 36.0%

gpm 1.0 60.0% 7.0 7.0 7.0 7.0

gpm 2.2 Faucets; standardgpm 1.8 20.5% 2.2 2.2

flow gpm 1.0 Bathroom faucet 42.9% 4.7 4.7 4.7

gpm 2.0 Kitchen faucet, 2 gpm 9.1% 1.0 1.0

gpm 1.75gpm 1.6 20.0%gpm 1 Kitchen faucet, 1 gpm 50.0% 5.5 5.5 5.5

gpf 2.5 Toilets - x

gpf 1.6 Low Flow 36.0% 6.7 6.7 6.7 6.7

gpf 1.3 Dual Flush Toilet 48.8%

BathsOther

gpd savings 3.2 16.8 23.7 28.0 30.4

Total (gpd/occ) 53.2 39.6 32.6 28.4 26.0

26% 39% 47% 51%

allons per flush; gpd/occ=gallons per day per occupant; PC=Per Capita

Wash and Eco Wash.

c=clotheswash.pr_tips_clothes_washers

fficiency in gallons of water consumed per cubic foot of capacity. The lower the WF, the more water efficient the clothes 

ximately 45% more water efficient than a non-energy star model.)

NERGY STAR qualified product list

undry per week, larger front-loading washers use only 16-20 gallons of water per load, compared to a conventional top-load 

r load. Factoring in the capacity advantage of a large front-loader, (almost twice the load-size of a conventional top-loader), 

o 80-90 gallons to get the same amount of laundry cleaned....The ENERGY STAR® logo indicates that a particular washing 

partment of Energy's highest minimum efficiency standards for energy-efficient washers by a at least minimum of 37%.

ycenter.org/home/appliances/washers.html

/Default.aspx?tabid=85

Conservation , Amy Vickers

eration.org/consumer/default.php/cPath/3499_3486_266

% savings over base home
APPENDIX B 211

APPENDIX B 

GREEN SCORING & COST

1 — Climate Zone #2

A. Baton Rouge, Louisiana

B. Bayou LaBatre, Alabama

2 — Climate Zone #3

A. Oakland, California

3 — Climate Zone #4

A. Richmond, Virginia

B. Seattle, Washington

4 — Climate Zone #5

A. Akron, Ohio – Townhouse

B. Akron, Ohio – Single Family Home

C. Cuyahoga, Ohio

5 — Retrofit – climate zone #4

A. Silver Spring, Maryland 

 i. Unit 1

 ii. Unit 2

 iii. Unit 3

 iv. Unit 4
212 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX B 213

APPENDIX B 

GREEN SCORING & COST

1 — Climate Zone #2

A. Baton Rouge, Louisiana
214 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Building Comparison Louisiana Katrina Cottage - KC910 in Baton Rouge

Baton Rouge LA - Katrina Cottage 910 Green Building Rating 

ANSI-ICC-700-2008 National Green Building StandardTM

Lot 60 x 120' 7,200 Silver Gold Emerald

House 26 x 35' 910 Required Actual Required Actual Required Actual Required Actual KEY

5. Lot Design... 39 51 66 68 93 105 119 138 Points are Co-Dependant on at

6. Resource Efficiency 45 78 79 89 113 115 146 152 least one other cell

7. Energy Efficiency 30 62 60 119 100 171 120 181 Overhead Cost - Dependant on

8. Water Efficiency 14 18 26 33 41 52 60 60 subdivision size

9. Indoor Env. Quality 36 53 65 86 100 102 140 154

10. Operation, Maintenance... 8 9 10 15 11 15 12 15

Additional Points 50 100 100 100

Total 222 271 406 410 558 560 697 700

27 Points Cost Points Cost Points Cost Points Cost

Chapter 5 51 117 68 803 105 2,754 138 7,145

Chapter 6 78 745 89 752 115 1,118 152 7,372

1,018 Chapter 7 62 982 119 5,063 171 9,713 181 13,072

Chapter 8 18 0 33 0 52 175 60 557

Chapter 9 53 0 86 215 102 298 154 5,232

Chapter 10 9 950 15 1,044 15 1,044 15 1,044

Total 271 2,794 410 7,878 560 15,103 700 34,421

3.07 8.66 16.60 37.83

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

Cost/Point 0 5 40 53 133

Rating 26 0 25 117 17 686 37 1,951 33 4,391 Ch. 5 Subtotal Base

4 4 0

5

5

3

3 0

3

3 0

3

4

4 754 Minimum 2 person team for 1 day. Varies 

with size of operations.

Lot Design

5

6

4

4

4 627 Mandatory in some states. Overhead cost of 

training a superintendent in a program like 

MD's Green Card . 8 hrs. plus $250 

2

3 3 117 Approx. 3000 sf disturbed area reseeded, 2 

times.

1 Additional 

Point

(a) Less than 25% 2

(b) 25 to 75% 3

(c) Greater than 75% 4

5

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

6

4

(4) Long-term erosion effects are reduced through the design and 

implementation of terracing, retaining walls, landscaping, and 

restabilization techniques.

(5) Underground parking uses the natural slope for parking 

entrances.

ANSI National Green Building StandardTM Baseline Bronze Silver Gold

Bronze

Cost per SF ($)

CH. 5 LOT DESIGN, PREPARATION, AND DEVELOPMENT

500.0 Intent. This section applies to lot development for the 

eventual construction of residential buildings, multi-unit buildings, 

or additions thereto that contain dwelling units. The buildings on the 

lot earn their own performance level by complying with the 

provisions of Sections 303, 304, or 305.5, as applicable.

501.1 The lot is selected to minimize environmental impact by one 

or more of the following:

(1) An infill lot is selected.

(2) A greyfield lot or an EPA-recognized brownfield lot is selected.

501.2 Mass Transportation. A range of mass transportation 

choices are promoted by one or more of the following:

(1) A lot is selected within one-half mile of pedestrian access to a 

mass transit system or within five miles of a mass transit station 

with provisions for parking.

(2) Walkways, street crossings, and entrances designed to promote 

pedestrian activity are provided. New buildings are connected to 

existing sidewalks and areas of development.

(3) Addition and Renovation Note: A renovation or addition project 

is implemented. (Points awarded for using an existing building 

and infrastructure.)

(3) A lot is selected within one-half mile of six or more community 

resources (e.g., recreational facilities (such as pools, tennis courts, 

basketball courts), parks, grocery store, post office, place of 

worship, community center, daycare center, bank, school, 

restaurant, medical/dental office, laundromat/dry cleaner.) 

502.1 A knowledgeable team is established and team member 

roles are identified with respect to green lot design, preparation, and 

development. The project’s green goals and objectives are written 

into a mission statement. 

503.0 Intent. The lot is designed to avoid detrimental 

environmental impacts first, minimize any unavoidable impacts, 

and mitigate for those impacts that do occur. The project is 

designed to minimize environmental impacts and to protect, 

restore, and enhance the natural features and environmental quality 

of the lot. (To be awarded points allocated for design, the 

intent of the design shall be implemented.) 

503.1 Natural resources are conserved by one or more of the 

following:

502 Project Team, Mission Statement, and Goals

(6) Ongoing maintenance of vegetation during construction is in 

accordance with TCIA A300.

(1) A natural resources inventory is completed under the direction 

of a qualified professional. 

(2) A plan is implemented to conserve the elements identified by 

the resource inventory as high priority resources. 

(3) Items listed for protection in the resource inventory plan are 

protected under the direction of a qualified professional. 

(4) Basic training in tree or other natural resource protection is 

provided for onsite supervisor.

(5) All tree pruning on site is conducted by a Certified Arborist.

Addition and Renovation Note: section 503.1 applies to additions 

that increase building footprint on the lot; and to renovations that 

include landscape, hardscape, and outdoor living area. (Additional 

points awarded for each strategy implemented.)

(3) All or a percentage of roads and parking are aligned with 

natural topography to reduce cut and fill.

(2) Hydrological/soil stability study for steep slopes is completed 

and used to guide the design of all buildings on the site.

503.2 Slope disturbance is minimized by one or more of the 

following: (Points awarded only if there are developable steep 

slopes on the lot.)

(1) All or a percentage of development on steep slopes is avoided.

Emerald

Cummulative
APPENDIX B 215

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2 Additional 

Points

5

5 0 Stockpile lumber in costruction 

entrance/driveway. Captured reseeding in 

503.1(6)

5

5 0 Coordinate with sewer and water and utilities. 

Bring in under driveways.

5

5 0 Site plan should include these.

6

6 0 Implement with 503.4(2).

6

6 754 Minimum 2 person team for 1 day. Varies 

with size of operations.

Less than 15% impervious structure/driveway 

to land

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

(4) A minimum of 75% of the roof is vegetated 

(green roof) 3

1 Additional 

Point

5

5 520 Simple implementation on infill lot. Allowed 

1/2 day for professional to develop plan that 

includes noted actions. Include 503.5(8) and 

503.6 in plan. Plan needed for 801.7.4 

points.

4

4 1,116 See 503.5(1) for plan cost. Cost of several 3 

shrubs, 2 trees and hydroseed.

(a) Lot is 0% turf 4

(b) Greater than 0% to less than 25% 3

(c) 25% to less than 50% 2 2 1,502 28% mulched.

(d) 50% to 75% 1

5

5 535 See 503.5(1) for plan cost. 3 trees and 5 

shrubs. 

5

5 0 See 503.5(1) for plan cost. Plant 3 trees from 

503.5(2) to provide shade. See 505.2(1)

4

4 360 See 503.5(1) for plan cost. Add 3 trees.

3

Not possible with a small infill lot.

4

4 0 See 503.5(1)

2 Additional 

Points

4

4 175 See 503.5(1). Include additional 5 shrubs.

(1) Maintain wildlife habitat.

1 Addt'l Point

(2) Expand wildlife habitat.

2 Addt'l Points

6 Not possible with this infill.

3 3

3

4 4

7

10

504 Lot Construction

4

4 0 Standard.

3

3 166

4

4 0

Addition and Renovation Note: Section 503.4 applies to additions 

that increase the building footprint on the lot; and to renovations 

that include hardscape and outdoor living area. (To be awarded 

these points, the amount of storm water runoff is not to 

503.3 Soil disturbance and erosion are minimized by one or 

more of the following: (Also see Section 504.3) (Points must be 

taken here to claim points in 504.1)

(3) All or a percentage of impervious surfaces are minimized and 

permeable materials are used for driveways, parking areas, 

walkways, and patios.

(a) tunneling instead of trenching

(b) use of smaller (low ground pressure) equipment or geomats to 

spread the weight of construction equipment

(1) Natural water and drainage features are preserved and used.

(2) A storm water management plan is developed and 

implemented that minimizes concentrated flows and simulates 

flows found in natural hydrology, e.g., vegetative swales, French 

drains, wetlands, drywells, and rain gardens.

(1) Construction activities are scheduled to minimize length of time 

that soils are exposed.

(2) Utilities are installed using one or more alternative means:

(3) Limits of clearing and grading are demarcated on the plan.

503.4 Storm Water Mgmt. Storm water is managed using one or 

more of the following low impact development techniques:

(d) placement of utilities under paved surfaces instead of yards.

(c) shared utility trenches or easements

Addition and Renovation Note: Section 503.2 applies to additions 

that increase building footprint on the lot; and to renovations that 

include landscape, hardscape, and outdoor living area. (Additional 

points awarded for each strategy implemented.)

503.5 Landscape plan is developed to limit water and energy use 

while preserving or enhancing the natural environment. 

(1) A plan is formulated to restore or enhance natural vegetation 

that is cleared during construction. Landscaping is phased to 

coincide with achievement of final grades to ensure denuded areas 

are quickly vegetated.

(2) Turf grass species, other vegetation, and trees are selected that 

are native or regionally appropriate for local growing conditions.

(3) 21 or greater dwelling units per acre

Addition and Renovation Note: Section 503.5 applies to additions 

that address protection and renovation of existing vegetation during 

and after construction and the preservation or enhancement of the 

natural environment. 

(3) A percentage or all turf areas are limited. 

(7) Onsite tree trimmings or stump grinding of regionally 

appropriate trees are used to provide protective mulch during 

construction and cleared trees are recycled as saw lumber or pulp 

wood.

503.6 Wildlife habitat. Measures are planned that will support 

wildlife habitat.

503.7 Mixed use development is incorporated.

(1) Environmentally Sensitive Areas are avoided.

(4) Plants with similar watering needs are grouped (hydrozoning).

(5) Species and locations for tree planting are identified that will 

provide summer shading of streets, parking areas, and buildings to 

moderate temperatures. 

(6) Vegetative wind breaks or channels are designed as 

appropriate for local conditions.

(1) 7 to less than 14 dwelling units per acre (4047 m2

)

Addition and Renovation Note: Section 503.6 applies to additions 

that increase building footprint on the lot; and to renovations that 

include landscape, hardscape, and outdoor living area. The 

existing landscape is either maintained to preserve a wildli

503.8 Environmentally Sensitive Areas.

(2) Compromised Environmentally Sensitive Areas are mitigated or 

restored.

(8) An integrated pest management plan to minimize chemical use 

in pesticides and fertilizers is developed.

504.2 Trees and vegetation. Designated trees and vegetation are 

preserved by one or more of the following:

(1) Fencing or equivalent to protect trees and other vegetation is 

installed.

503.9 Density. The average density on a net developable area 

basis is: 

(2) 14 to less than 21 dwelling units per acre

(2) Trenching, significant changes in grade, and compaction of soil 

and critical root zones in “tree save” areas are avoided.

504.0 Intent. Environmental impact during construction is avoided 

to the extent possible; impacts that do occur are minimized, and 

any significant impacts are mitigated.

504.1 Onsite supervision and coordination is provided during 

clearing, grading, trenching, paving, and installation of utilities to 

ensure that specified green development practices are implemented 

(Also see Section 503.3.)
216 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

5

5 300 Note: On this size lot this activity would 

typically be included with house stakeout for 

lesser cost.

5

5 0 Included with 504.3(1)

5

5 0 Included with 504.3(1)

5

5

3

3

3 0 See 503.1(6)

3 3 220 Soil ammendment.

5 0 See 504.1(2) and 503.3(2)

2 Additional 

Points

505 INNOVATIVE PRACTICES

4

4

2 Additional 

Points

4

4 0 See 503.3(5).

Base Pts.

52 0 26 745 11 7 26 366 37 6,253 Ch. 6 Subtotal 

Cost/Point 0 29 1 14 169

15 15 910 sf.

12

9

6

Mandatory

1 Addt'l Point

3 Addt'l Point

6 Add'l Points

1 Addt'l Point

3 pts per system 

(9 pts max)

3 3 Floors - steel at 24" oc

3 3 Wall 550S162-33 at 24" oc

3 3 Roof 1000S162-54 at 24" oc

3

1

4

4 1,040

Have suppliers prepare use reports with their 

bid at no charge for joists, wall studs and 

rafters. Allowed 1days of professional time to 

prepare sheathing layouts for prints. O/H.

(a) The total area of the existing building or dwelling unit is less 

than or equal to 2500 sf.

(a) The total area of the existing building or dwelling unit is greater 

than 2500 sf.

601.3 Building dimensions and layouts are designed to reduce 

material cuts and waste.

(1) When used for at least 80% of floor area

(3) When used for at least 80% of roof area 

(2) When used for at least 80% of wall area

(4) When used for at least 80% of cladding or siding area

(5) When used for at least 80% of penetrations or trim area

601.4 Detailed framing or structural plans, material quantity lists 

and onsite cut lists for framing, structural materials, and sheathing 

materials are provided.

Additions less than or equal to 75% of existing building. 

Where the addition area is less than or equal to 75 percent of the 

existing buidling or dwelling unit area, points are awarded as 

follows:

(1) The existing structure is 50% to 75% of total building or dwelling 

unit area.

(2) The existing structure is 76% to 99% of total building or dwelling 

unit area.

Renovation Note: When renovations increase the total existing 

building or dwelling unit area by 1 percent or less, points are 

awarded as follows:

(6) Disturbed areas that are complete or to be left unworked for 

greater than 21 days are stabilized within 14 days using methods 

as recommended by the EPA or in the approved storm water 

pollution prevention plan (SWPPP), where required.

(7) Soil is improved with organic amendments and mulch.

(4) Topsoil is stockpiled and stabilized for later use to establish 

landscape plantings.

(5) Soil compaction from construction equipment is reduced by 

distributing the weight of the equipment over a larger area (laying 

lightweight geogrids, mulch, chipped wood, plywood, OSB, metal 

plates, or other materials capable of weight distribution in the 

pathway of the equipment).

(3) Sediment and erosion controls are installed and maintained in 

accordance with the storm water pollution prevention plan 

(SWPPP), where required.

(3) Damage to designated existing trees and vegetation is 

mitigated during construction through pruning, root pruning, 

fertilizing, and watering.

504.3 Soil disturbance and erosion. Onsite soil disturbance and 

erosion are minimized by one or more of the following: (also see 

section 503.3)

(1) Limits of clearing and grading are staked out.

(2) “No disturbance” zones are created using fencing or flagging to 

protect vegetation and sensitive areas from construction activity. 

(8) Utilities are installed using one or more alternative means such 

as: 

5

tunneling instead of trenching, use of smaller equipment, use of low 

ground pressure equipment, use of geomats, shared utility trenches 

or easements. 

Addition and Renovation Note: Additional points for Section 504.3 

apply only where onsite construction staging and storage areas are 

planned and located to avoid soil and vegetation disturbance in 

areas where no construction occurs. 

(5) Greater than 4,000 square feet (373 m2

)

Multi-Unit Building Note: For a multi-unit building, use a weighted 

average of the individual unit sizes in qualifying for available points. 

601.2 Material Usage. Building-code-compliant structural 

systems or advanced framing techniques that optimize material 

usage are implemented. Points awarded for each system or 

framing technique implemented.

For every 100 square feet over 4,000 sf, one point is to be 

added to Table 303, category 7 for each performance level. 

Addition Note: Additions more than 75% of existing building. 

Section 601.1 does not apply to additions with an area of more than 

75% of the area of the existing building or dwelling unit. 

505.0 Intent. Innovative lot design, preparation and development 

practices are used to enhance environmental performance. Waivers 

or variances from local development regulations are obtained and 

innovative zoning practices are used to implement such pract

505.1 Driveways or parking areas are shared. Waivers or variances 

from local development regulations are obtained to implement such 

practices as applicable. In a multi-unit project, parking capacity is 

not to exceed the local minimum requirements.

505.2 Heat Island Mitigation. Any combination of the following 

strategies are provided for a minimum of 50% of the horizontal 

surface area of the hardscape:

(1) Shading of hardscaping: Shade from existing or new vegetation 

is provided (within five years) or from trellises. Shade of 

hardscaping is to be measured on the summer solstice at noon.

Addition and Renovation Note: Section 505.1 applies only where 

existing impervious driveway and parking area(s) are reduced. 

(2) Light colored hardscaping: Horizontal hardscaping materials are 

installed with a solar reflectance index of 29 or greater. 

601.1 Conditioned floor area, as defined by ICC IRC calculated 

in accordance with ANSI Z765, is limited. Dwelling unit size is to 

601 Quality of Construction Materials and Waste

601.0 Intent. Design and construction practices that minimize the 

environmental impact of the building materials are incorporated; 

environmentally efficient building systems and materials are 

incorporated; and waste generated during construction is reduc

(1) Less than or equal to 1,000 square feet

(2) Less than or equal to 1,500 square feet

(3) Less than or equal to 2,000 square feet

(4) Less than or equal to 2,500 square feet

CHAPTER 6: RESOURCE EFFICIENCY
APPENDIX B 217

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(1) Floor system. 

4 4 52 Estimated a 2.5% premimium for precuts. 

With steel this should be a savings.

(2) Wall system. 

4 4 0 These should have been shipped standard 

lengths same as studs.

(3) Roof system. 4 4 52 See note 601.5(a)

13

13

Max 8 points

(1)first stacked story 4

(2) for each additional story 2

Max 12 

points

5

2

5

Vinyl windows are prefinished.

3

3 Pier foundation.

4

(1) Adobe

(2) Concrete/Masonry

(3) Logs 

(4) Rammed earth

Maximum 

number of 

points 5 

(1) Installing a porch roof or awning.

(2) Extending the roof overhang.

(3) Recessing the exterior door.

Main entrance door 3 3

Additional covered door assembly 1 1

4

Inches Rainfall*

Eave Overhang 

(Inches)

Rake Overhang 

(Inches)

Less than 20 12 12

21 to 40 12 12

41 to 70 18 12 4 516 Add 10" of overhang

More than 70 24 12

0

1

Mandatory Not applicable.

4

0

2 Additional 

Points

3 3

4

4 162

Plans indicate gutters and downspouts; cost 

is for 4 extensions and fold back elbows.

1 Add'l Point

Mandatory

Mandatory 0 

Add'l Points

2 Add'l Points 

4

4

 0 Add'l Points

(5) manufactured home construction for the entire building located 

above grade.

(c) Window, skylight, and door assemblies not requiring paint or 

stain on exterior and/or interior surfaces.

(d) Wall coverings or systems not requiring paint or stain or other 

type of finishing application.

601.7 Site applied finishing materials. Building materials or 

assemblies that do not require additional site applied material for 

finishing are utilized. 

(a) Pigmented, stamped, decorative, or final finish concrete or 

masonry.

(1) 90% or more of the installed material or assembly listed below:

(2) 50% to less than 90% of the installed building material or 

assembly listed below:

(b) Trim not requiring paint or stain.

601.8 Foundations such as frost-protected shallow foundations, pier 

and pad foundations, post foundations and other similar foundation 

types are designed and constructed.

601.9 One or more of the following above grade wall systems that 

provide sufficient structural and thermal characteristics are used for 

at least 75% of the gross exterior wall area of the building: 

602.2 Roof overhangs, based on inches of rainfall in Table 602.2, 

are provided over at least 90% of exterior walls to protect the 

building envelope.

602.0 Intent. Design and construction practices are implemented 

that enhance the durability of materials and reduce in-service 

maintenance.

602.1 Entries at exterior door assemblies, inclusive of side lights, 

are covered by one of the following methods below to protect the 

building from the effects of precipitation and solar radiation. A 

projection factor of at least 0.375 is provided. Eastern and western 

facing entries in Climate Zones 1, 2, and 3, as determined in 

accordance with Figure 6(1), shall have a projection factor of at 

least 1.0 unless otherwise protected from direct solar radiation by 

other means (e.g. screen wall, vegetation).

602 Enhanced Durability and Reduced Maintenance

Addition Note: Section 602.2 applies to the new construction 

portion of additions. 

Renovation Note: Section 602.2 applies to renovations that alter 

the existing roof.

Table 602.2

Minimum Roof Overhang for One- & Two-Story Buildings

602.3.2 Interior and exterior foundation perimeter drains are 

installed and sloped to discharge to daylight, dry well, or sump pit.

602.4 Drip edge is installed at eaves and gable roof edges.

602.5 A gutter and downspout system with extensions, or splash 

blocks and effective grading, are provided to carry water at least 5 

feet away from perimeter foundation walls. 

602.3 Foundation Drainage

602.3.1 Where required by the IRC/IBC for habitable and usable 

spaces below grade, exterior drain tile is installed.

Renovation Note: Section 602.5 applies only to renovations.

Addition Note: Section 602.3.2 applies to the new construction 

portion of additions. 

Renovation Note: Section 602.3.2 applies to renovations that 

involve the demolition/reconfiguration of exterior walls and/or 

modification of the existing foundation drainage system. 

602.6 Finish grade at all sides of building is sloped to provide a 

minimum of 6 inches of fall within 10 feet of the edge of the 

building. Where lot lines, walls, slopes or other physical barriers 

prohibit 6 inches of fall within 10 feet, the final grade 

Addition Note: Section 602.6 applies only to additions that 

increase the footprint of the building.

Renovation Note: The additional points for Section 602.6 apply 

only to renovations.

Addition Note: Section 602.7 applies only to the new construction 

portion of additions.

Renovation Note: The additional points for section 602.7 applies 

only to renovations that alter the existing roof.

602.7 Termite barrier. Continuous, physical,foundation termite 

barrier used with or without low toxicity treatment is installed in 

geographical areas that have subterranean termite infestation 

potential determined in accordance with Figure 6(3).

601.6 Stories above grade are stacked, such as in 1 1/2 and 2 

story or greater structures. The area of the upper story shall be at 

least 50% of the area of the story below, based on areas with a 

minimum ceiling height of 7 feet. 

(4) modular construction for the entire building located above grade.

601.5 Pre-cut or pre-assembled components, or panelized or 

precast assemblies are utilized for 90% for the following system or 

building.
218 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1 Add'l Point 

3 Add'l Points

2

4

Specify a borate treated OSB for floor, walls 

and roof sheathing.

6

6 745 Cost of borate-treated OSB for floor, wall, and 

one row of roof (at eaves) sheathing.

Mandatory

Complies. A-01.

Mandatory 0 

Add'l Points

Mandatory 0 

Add'l Points

Mandatory Not applicable.

4 Not applicable.

(1) Rubberized coating, or

(2) Drainage mat.

0 Additional 

Points

2 Additional 

Points

6

6

(2) Roof valleys.

3

3 1,124 Note 1L.

(2) A green (landscaped) roof system.

1 Add'l Point 

3

3 29 Include an under cabinet recycling container.

(2) Compost facility provided on-site. 3 3 72 

 1 (Max 12 

points)

3

4

4 7 This cost is a one-time set up of 4x4x8' bins 

for sorting and reuse/reload divided by the 37 

lots in the subdivision.

Points per Table 

604.1

Material Percentage Recycled Content Per 2 Minor Per 2 Major

25% - 50% 1 2 2 0 -2 0 Steel and fibercement.

50% - 75% 2 4 4 0 Gypsum board and cellulose insulation. Note: 

specify correct gypsum board.

75% 3 6 3 0 Use stainless steel sink and recycled framing 

nails (Maze).

6

6 989 Estimate is one day for set-up and one 

hour/week for record keeping. Costs of 

removal assumed even for each method. 90 

day cycle time.

Mandatory 2 

Additional 

Points

7

7 0 Include in waste management plan. See 

605.1 Divert 50% of construction waste to 

recycle.

602.8 Termite-resistant materials are used as follows: 

(1) In areas of slight to moderate termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, floors, 

concealed roof spaces not accessible for inspection, exterior decks, 

and exterior claddings within the first 2 feet above the top of the 

foundation. 

(1) new non-chemical termite barrier is provided

(2) existing chemical barrier is removed and replaced with a nonchemical barrier

602.12 Flashing details are shown on plans and flashing is installed 

at all of the following locations, as applicable:

(1) Around exterior fenestrations, skylights and doors.

(3) Deck/balcony to building intersections.

(2) In areas of moderate to heavy termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, floors, 

concealed roof spaces not acessible for inspection, exterior decks, 

and exterior claddings within the first 3 feet above the top of the 

foundation. 

(3) In areas of very heavy termite infestation probability (as defined 

by Figure 6(3)) for the foundation, all structural walls, floors, 

concealed roof spaces not accessible for inspection, exterior decks, 

and exterior claddings.

602.9 Where required by the IRC/IBC, a water-resistive barrier 

and/or drainage plane system is installed behind exterior veneer 

and/or siding. 

Addition Note: Section 602.9 applies to the new construction 

portion of additions.

Renovation Note: Section 602.9 applies to renovations that 

include exterior veneer and/or siding replacement.

Addition Note: Section 602.11 applies to the new construction 

portion of additions.

Renovation Note: Section 602.11 applies to renovations that 

involve the demolition/reconfiguration of exterior walls, modification 

of the foundation wall, or an effort to improve foundation 

waterproofing.

602.13 Roof Surfaces. A minimum of 90% of roof surfaces are 

constructed of one or both of the following:

(1) Products which meet the requirements of the ENERGY STAR® 

cool roof certification or equivalent.

(4) At roof-to-wall intersection and at roof-to-chimney intersections.

(5) A drip cap is provided above windows and doors that are not 

Flashed or protected by covering per Section 602.1.

603.1 Existing buildings and structures are reused, modified or 

deconstructed in lieu of demolition. (One point awarded for every 

200 sq. ft., 18.5m2, of floor area.)

603.2 Reclaimed and/or salvaged materials and components are 

used.Total material and labor cost of salvaged materials shall equal 

or exceed 1% of total construction costs.

602.14 Recycling. Occupant recycling is facilitated by one or more 

of the following methods:

Renovation Note: Section 602.13 applies to renovations that 

include roof replacement.

(1) A built-in collection space in each kitchen and an 

aggregation/pick-up space in a garage, covered outdoor space or 

other area for recycling containers.

603 Reused or Salvaged Materials 

603.0 Intent. Practices that reuse or modify existing structures, 

salvage materials for other uses, or use salvaged materials in 

building’s construction are implemented. 

604.1 Building materials with recycled content are used for at least 

two minor and/or two major components of the building.(NOTE: 

Does not specify PConsumer. Implication is that max. allowable is 

4 materials. 9 points is max. in scoring tool.)

Table 604.1

603.3 Scrap Materials. Facilitation for sorting and reuse of scrap 

building material (e.g. provide a central storage area or dedicated 

bins.)

604 Recycled-Content Building Materials

Recycled Construction Waste 

605.0 Intent. Waste generated during construction is recycled. 

Note: All waste classified as hazardous shall be properly handled 

and disposed. (Points not awarded for hazardous waste 

removal.) 

605.1 A Construction Waste Management Plan is developed, 

implemented, and posted at the jobsite with a goal of recycling or 

salvaging a minimum of 50% (by weight) of construction and landclearing waste.

(b) Other methods approved by the NAHB Research Center (the 

Adopting Entity).

Recycled Content

Addition and Renovation Note: The construction waste 

managment plan includes information on the proper handling and 

disposal of hazardous wastes.

(a) Materials are ground or otherwise safely applied onsite as soil 

amendment or fill. At least 50% (by weight) of construction and 

land-clearing waste shall be diverted from landfill.

605.2 Onsite recycling measures following applicable regulations 

and codes are implemented, such as the following:

602.10 In areas where there has been a history of ice forming along 

the eaves causing a backup of water, an ice barrier is installed at 

roof eaves and is extended at least 24” inside the exterior wall line 

of the building, in accordance with the IRC/IBC.

602.11 Enhanced foundation waterproofing is installed:
APPENDIX B 219

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory 0 

Add'l Points

Max 6

3

3 0 Recycle steel and copper wire. Net savings is 

anticipated. Note: If steel were ordered in 

precuts recycle drywall.

1 1 0 Recycle cardboard. 

Max 8

(b) engineered wood

(c) bamboo

(d) cotton

(e) cork

(f) straw

3

2 0 Wood cabinets and interior wood trim.

6

6 0 OSB sheathing and cellulose insulation. 

1 

(2 pts max)

(a) AFF American Tree Farm System®

3 350 Specify Masonite doors for FSC certified. 

Estimated added cost of $35/door. And 

kitchen cabinets at no cost.

4

4 369 Specify that front/rear decks/railing are 

certified wood.

6 pts. max.

2 0 Specify that OSB comes from a mill that 

complies.

Max 9 points

3 Engineered wood - OSB floor and roof

(3) Roof or floor trusses. 6 1,866 Specify steel roof and floor trusses over 

conventional approach.

10 points max.

2

2 0 Use indigenous stone for driveway base.

2 2 0 6 0 Specify OSB from local mill. Deck lumber, 

steel, and siding locally sourced.

Max 15 points

(1) Per product/system comparison 3

(2) Whole building LCA analysis 15

Max 10 points

Base Pts. 35 0 27 982 57 4,082 52 4,650 10 3,359 Ch. 7 Subtotal 

Cost per 

point

0 36 72 89 336 

(2) for each additional recycled material.

(1) one type of material.

(2) For each additional material.

608.1 Indigenous materials are used for major elements of the 

building. 

(2) For the Green Remodel Path (Section 305.5), the existing 

building or dwelling unit shall comply with Table 305.5)

(1) For the Green Building Path (Section 305.4), the existing 

building or dwelling unit shall comply with the mandatory 

renovation/addition practices and shall achieve the points indicated 

in Table 303.

Renovation Note: Section 701 applies to existing buildings as 

follows:

609.1 A more environmentally preferable product or assembly for 

an application based upon the use of a Life Cycle Assessment 

(LCA) tool compliant with ISO 14044 or other recognized standards 

that compare the environmental impact of building materials, as

610 Innovative Practices

610.1 Manufacturer's environmental managment system 

concepts. Product manufacturer’s operations and business 

practices include environmental management system concepts and 

the production facility is ISO 14001 certified or equivalent. The 

aggregate value of building products from ISO 14001 certified or 

equivalent production facilities is at least 1% or more of the 

estimated total building materials cost. (1 point awarded for every 

percent.) 

701.1 Mandatory requirements. The building shall comply with either Section 702 

(Performance Path) or Section 703 (Prescriptive Path). Items listed as “Mandatory” in 

Section 701.4 apply to both the Performance and Prescriptive Paths.

609 Life Cycle Analysis

CHAPTER 7: ENERGY EFFICIENCY

606.1(1) At least two types of biobased materials are used, each for 

more than .5% of the project’s projected building material cost. 

Combined 8 pts Max

606.1(2) At least two types of biobased materials are used, each for 

more than 1% of the project’s projected building material cost. 

(1) Lighter, thinner brick with bed depth less than 3 inches, brick 

with coring above 25%, or both.

607 Resource-Efficient Materials

607.1 Products containing fewer materials are used to achieve the 

same end-use requirements as conventional products, including but 

not limited to: (3 points awarded for each material.)

606.2 Wood-based products are certified to the requirements of 

one of the following recognized product programs: 

(b) Canadian Standards Association’s Sustainable Forest 

Management System Standards (CAN/CSA Z809)

3

606.3 Manufacturing Energy. Materials are used for major 

components of the building that are manufactured using a 

minimum of 33% of the primary manufacturing process energy 

derived from renewable sources, combustible waste sources, or 

renewable energy credits (RECs). (2 points awarded per 

material.)

(i) other biobased materials with a minimum of 50 percent biobased 

content (by weight or volume).

608 Indigenous Materials

(d) Program for Endorsement of Forest Certification Systems 

(PEFC)

(e) Sustainable Forestry Initiative Program (SFI)

(6) Other product programs mutually recognized by PEFC

(2) Engineered wood or engineered steel products.

606.2(2) Where a minimum of two certified wood-based products 

are used in major elements of the building, such as walls, floors, or 

roof.

606.0 Intent. Building materials derived from renewable resources 

are used.

606.1 The following biobased products are used. (Note: 606.1 and 

606.2 denote % of project mat'l cost req'd.)

(a) certified solid wood in accordance with Section 606.2

605.3 Recycled Construction materials: Construction materials 

(e.g., wood, cardboard, metals, drywall, plastic, asphalt roofing 

shingles, or concrete) are recycled offsite.

(1) A minimum of two types of materials are recycled.

Addition Note: Section 701, including mandatory items, applies 

only to the new construction portion of additions.

(g) natural fiber products made from crops (soy or corn-based)

(h) products with the minimum biobased contents of the USDA 7 

CFR Part 2902

606.1(3) For each additional biobased material used for more than 

.5% of the project’s projected building material cost. 

Addition and Renovation Note: All waste classified as hazardous 

waste is properly handled and disposed of. The weight of this 

material is exempted from landfill diversion when Section 605.2 is 

applied to existing buildings.

606 Renewable Materials

(c) Forest Stewardship Council (FSC)

606.2(1) Where a minimum of two certified wood-based products 

are used for minor elements of the building, such as all trim, 

cabinetry, or millwork.
220 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Performance path selected.

Performance path selected at all levels.

Mandatory Practices

Mandatory

0 520 Review by verifier. 4 hours at professional 

time estimated. Encompasses software 

modeling for either approach.

701.4.1 HVAC SYSTEMS

Mandatory

0 2006 IECC requirement. Complies.

Mandatory 0 

Add'l Points

 2 Add'l 

Points

Mandatory

701.4.2 DUCT SYSTEM

Mandatory

0 2006 IECC requirement.

Mandatory 0 

Add'l Points

 0 Add'l Points

(a) 25% to less than 50% 1 Add'l Pt 

(b) 50% to less than 75% 2 Add'l Pt 

(c) 75% to less than 100% 3 Add'l Pt 

(d) 100% 4 Add'l Pt 

5 Add'l Pt 

Mandatory 0 All ducts are in the attic.

Mandatory 0 

Add'l Pts

1 Add'l Pt 

2 Add'l Pt 

Mandatory

0 

Mandatory

0 

Mandatory 0 

Add'l Points

 2 Add'l Pts

Mandatory

0 SPF?

2 Add'l Pts

Mandatory

Pier. N/A.

2

2

701.4.3.3 WALLS 

Mandatory

0 See flashing details on plan.

 1 Add'l Pt

Mandatory

(2) Band Joist and Rim Joists. Band and rim joists are insulated 0 SPF?

and air sealed.

Renovation Note: Existing windows and doors are weatherstripped and sealed.

(b) Batt and loose-fill insulation is held in place by permanent 

attachments or systems in accordance with the manufacturer’s 

instructions.

701.4.3.1 GENERAL Insulation and air sealing is in accordance 

with the following: 

701.1.1 Minimum Performance Path Requirements. A building complying with 

Section 702 shall exceed the baseline minimum performance required by the IECC by 

15%, and shall include a minimum of two practices from Section 704.

701.1.2 Minimum Prescriptive Path Requirements. A building complying with 

section 703 shall obtain a minimum of 30 points from Section 703, and shall include a 

minimum of two practices from Section 704. 

701.1.3 Alternative Bronze Level Compliance. As an alternative, any building that 

qualifies as an ENERGY STAR qualified home or equivalent achieves the Bronze 

Level for Chapter 7.

701.4.2.1 Ducts are sealed with tape complying with UL 181, 

mastic, gaskets, or an approved system as required by the ICC IRC 

(Section M1601.3.1, or ICC IMC Section 603.9) to reduce leakage.

Renovation Note: Section 701.4.2.2 applies to renovations that 

involve one of the following:

701.2 Emerald Level Points. The Performance Path shall be used to achieve to the 

Emerald Level.

701.4.1.1 Space heating and cooling system/equipment shall be 

sized according to heating and cooling loads calculated using 

ACCA Manual J or equivalent. 

701.4.1.2 Where installed, as a primary heat source in the building, 

radiant or hydronic space heating system is designed using 

industry-approved guidelines (e.g. ACCA Manual J, GAMA H-22, or 

an accredited design professional's and manufacturer's recommen

Addition and Renovation Note: Section 701.4.1.1 is mandatory 

for both additions and renovations where new HVAC equipment is 

installed.

Addition and Renovation Note: The additional points for section 

701.4.1.1 apply to additions or renovations that include one or both 

of the following: 

(1) a change in heating and cooling loads

(2) a replacement and/or addition of mechanical equipment

701.3 A review by the Adopting Entity or designated third party 

shall be conducted to verify design and compliance with Chapter 7. 

(1) Insulation shall be installed in accordance with the 

manufacturer’s instructions or local code, as applicable.

701.4.3.2 FLOOR / FOUNDATION / CRAWLSPACE

Addition and Renovation Note: Section 701.4.2.1 applies only to 

the new portions of a duct system, except as follows:

(1) For renovations of existing buildings, the entire duct system, 

both existing and new, is permitted to be sealed with mastic or an 

aerosol spray-applied duct sealant.

(2) For existing duct systems, where the existing duct system is not 

in accordance with Section 701.4.2.1, the overall duct system 

leakage is reduced by using any approved methods in Section 

701.4.2.1, or aerosol spray applied duct sealant. Additional p

701.4.3 INSULATION and AIR SEALING

(1) the demolition, reconfiguration, or addition of interior walls or a 

modification in the duct system of the building

(2) a focused effort to solve the use of building cavities as supply 

ducts

(e) the entire system is upgraded in accordance with Section 

704.6.2.2

701.4.2.2 Building cavities are not used as supply ducts. 

Addition Note: Section 701.4.2.2 is mandatory for new 

construction portion of additions.

Addition and Renovation Note: Section 701.4.3.1(1) is 

mandatory for the new construction portion of additions and 

renovations.

(2) Shafts (duct shaft, piping shaft/penetrations, flue shaft.) 

Openings to unconditioned space are fully sealed with solid 

blocking or flashing and any remaining gaps are sealed with caulk 

or foam. Fire-rated collars and caulking are installed where re

(a) Insulation is installed to maintain permanent contact with the 

underside of the subfloor decking, enveloping any attached 

ductwork within the thermal envelope without compression or air 

gaps in the insulation. This practice does not apply to ducts or 

other mechanical equipment that are adjacent to the underside of 

the subfloor.

(1) Floors (Including insulated floors above garages and 

cantilevered floors)

Renovation Note: Existing openings to unconditioned spaces are 

sealed.

Renovation Note: Insulate existing uninsulated floors.

(2) Crawlspace. Where insulated, crawlspace wall insulation is 

permanently attached to the walls. Exposed earth in unvented 

crawlspaces is covered with continuous vapor retarder with 

overlapping joints taped or masticed. 

(1) Windows and Doors. Caulking, gasketing, adhesive flashing 

tape, foam sealant, or weatherstripping is installed forming a 

complete air barrier. 

Renovation Note: In accordance with Section 701.4.3.2(2):

(1) existing uninsulated crawlspace is insulated.

(2) exposed earth in existing crawlspace is covered.
APPENDIX B 221

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

 1 Add'l Pt

Mandatory

0 N/a pier foundation.

74 Cost to retrofit from underneath. 2 hours field.

 1 Add'l Pt

Mandatory

0 N/a

 1 Add'l Pt

Mandatory

0 

Mandatory

127 

 1 Add'l Pt

Mandatory

0 No recessed lights.

 1 Add'l Pt

Mandatory

0 2006 IECC R806.3

 2 Add'l Pts

701.4.4 FENESTRATION

Mandatory

0 2006 IECC zone2 u=.75 SHGC=.40; cost 

differential between this and u=.65 is 

negligible.

Table 701.4.4.1

Fenestration Specifications

Climate Zones U-Factor SHGC

1 and 2 0.65 0.4

3 0.4 0.4

4 to 8 0.35 Any

1 to 3 0.75 0.4

4 to 8 0.6 Any

702 Performance Path

Mandatory

0 Performance path.

Ducts were sealed and a programmable Tstat 

was added to reach 15%. See 704.6.1(1) and 

(1) 15% 30 30 0 

(2) 30%

60

30 3,548 Upgrade attic R-38 & floor insulation to R30+5. Install R-5 foam sheathing on top of 

OSB. Tankless electric high eff. water heater.

(3) 50%

100

40 0 See 704.3.2.1 for cost of ICS solar hot water. 

Tankless electric cost at (2) above, silver 

level.

(4) 60%

120

20 2,679 See 704.3.3.1 for cost of 0.5 kW 

photovoltaics. Equipment upgrade here - 8 

SF. SEER 18 9.0HSPF

 0 Add'l Pts

703 Prescriptive Path 

Points per Table 

703.1.1

Sect. 703 pts. 17

Practices 704 5

Zone 2 Zone 3 10 (10) 0

10% UA improvement 10 points 12 points

UA improvement = 28%. Performance path 

selected after baseline.

20% UA improvement 20 points 24 points

Zone 4 Zone 5-6

10% UA improvement 14 points 16 points

20% UA improvement 28 points 32 points

Zone 7-8

10% UA improvement 18 points

20% UA improvement 36 points

 0 Add'l Pts

Mandatory 

0 Add'l Points

(2) Recessed Lighting. Recessed light fixtures that penetrate the 

thermal envelope are airtight, IC rated, and sealed with gasket, 

caulk, or foam.

Table 703.1.1

Climate Zone

Addition Note: Section 703.1.1 applies to the new construction 

portion of additions.

Renovation Note: Replace existing recessed lights that penetrate 

the thermal envelope with airtight, IC-rated recessed light fixtures 

that are sealed to drywall with gasket, caulk, or foam. (Additional 

point per fixture)

703.1 Building envelope. Where the total building thermal 

envelope UA is less than required by ICC IECC, Section 402.1.4, 

the total building thermal envelope UA is in accordance with Table 

703.1.1. Where insulation is used to achieve these percentages, a

Renovation Note: Application of Section 702.2: A baseline 

energy use measurement is calculated for the existing building. 

(Based on the reduction in whole building energy use, points are 

given for every increase in efficiency in accordance with Section

(5) Exterior Architectural features. Code required building 

envelope insulation and air sealing is not disrupted at exterior 

architectural features such as stairs and decks. 

Renovation Note: Existing attic access, knee wall door, or dropdown stairs are insulated.

701.4.3.4 CEILINGS AND ATTICS

Renovation Note: Existing uninsulated rim and/or band joists are 

insulated.

(a) Sill sealer, or other material that will expand and contract, shall 

be installed between foundation and sill plate.

(b) Caulk or the equivalent is installed to seal the bottom plate of 

exterior walls.

(3) Between Foundation and Sill Plate Bottom Plate

Renovation Note: Existing skylight shafts and kneewalls are 

insulated.

(1) Attic access (except unvented attics). Attic access, knee 

wall door, or drop down stair is covered with insulation and 

gasketed. Knee wall door is insulated unit or is covered with 

insulation.

(4) Skylights and kneewalls. Skylight shafts and knee walls are 

insulated to the same level as the exterior walls.

Renovation Note: Existing perimeter sill plates are sealed.

Renovation Note: The existing whole building thermal envelope 

UA is evaluated. One of the following is selected based on the 

evaluation.

Total Building Thermal Envelope UA

(1) If the overall thermal performance meets or exceeds the 

requirements of ICC IECC; Section 402.1.4; Section 703.1.1 

applies to the renovation.

(3) Eave vents. Where ceiling/attic assemblies or designs have 

eave vents, baffles, or other means shall be utilized to minimize air 

movement into or under the insulation.

701.4.4.1 The NFRC-certified U-factor and SHGC windows, 

exterior doors, skylights, and tubular daylighting devices (TDDs) are 

in accordance with ENERGY STAR, or equivalent, or Table 

701.4.4.1. Decorative fenestration elements with a maximum area 

of 15 sq

Skylights and TDDs 

(max. certified ratings)

Windows and Exterior Doors 

(maximum certified ratings)

702.2 Energy efficiency features are implemented to achieve 

energy cost performance that exceeds ICC IECC by the following. 

A documented analysis using software in accordance with ICC 

IECC, Section 404, or ICC IECC Section 506.2 through 506.5, 

applied a

Renovation Note: Provide blocking or baffle at eaves to ensure 

ventilation over attic iinsulation.

702.1 Points from Section 702 (Performance Path) shall not be 

combined with points from Section 703 (Prescriptive Path).
222 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

15

30

45

Points per Table 

703.1.2

Grade Points

1 15

2 10

3 0

Points per Table 

703.1.3

Table 703.1.3

Exterior Mass Walls

3 in. to <6 in. 6 in.

Climate Zones 1, 2, 3, 4 except marine, and 5 

dry. 4 6

Climate Zones 4 marine, 5 except dry, and 6. 3 5

Climate Zones 7 and 8 0 0

703.2 Insulation & Air Sealing

15

(2) No third party verification performed. 3

703.2.1.1 GENERAL

(1) Thermal insulation is installed in substantial contact with interior 

and exterior air barrier to provide continuous alignment of the 

insulation with the air barrier. The following are deemed to be their 

own air barrier:

(a) Any spray or rigid foam insulation with an air permeance of 0.02 

L/s-m2 or less at 75 Pa.

(b) ICFs, SIPS, and other wall systems that provide their own air 

barrier, except at interfaces with other materials or assemblies, or 

penetrations.

(c) Spray foam that complies with the following: 

(ii) Continuous in the cavity without any unrepaired breaks.

(iii) air impermeable

(i) continuously attached to the top, bottom and both sides of the 

cavity

(a) Grades apply to cavity fill insulation, continuous rigid insulation, 

and any other field-installed insulation products. Grading applies to 

ceilings, walls, rim joists, conditioned basements and crawlspaces, 

except as specifically noted. Inspection s

(b) Insulation is installed in accordance with the manufacturer’s 

instructions and/or industry standards.

703.1.2.1 Both Grade 1 and Grade 2 installations are in 

accordance with the following:

(2) If the existing overall thermal performance is below the 

requirements of ICC IECC, Section 402.1.4, the overall thermal 

performance of the whole building thermal envelope UA is improved 

a minimum of the following:

Insulation Installation Grades

(a) 15 percent

(b) 30 percent

(a) 45 percent, or meets the requirement of ICC IECC, Section 

402.1.4

Table 703.1.2

703.1.2 The insulation installation is graded by a third party and is 

in accordance with Sections 703.1.2.1, 703.1.2.2, 703.1.2.3, and 

/or 703.1.2.4, as applicable. (Points not awarded in this section 

if already awarded under Section 703.1.1)

(c) Exterior rigid insulation shall have substantial contact with the 

structural framing members or sheathing materials, and is tightly 

fitted at joints.

(c) Wall cavity insulation is enclosed on all six sides, and is in 

substantial contact with the sheathing material on one or more 

sides (interior or exterior) of the cavity.

(a) Insulation uniformly fills each cavity side-to-side and top-tobottom, without substantial gaps or voids around obstructions (such 

as blocking or bridging).

703.1.2.2 Grade 1 installation in accordance with the following: 

(b) Compression or incomplete fill amounts to no more than 2% or 

less, presuming the compression or fill is at least 70% of the 

intended fill thickness; occasional small gaps are acceptable.

(g) ICFs, SIPs, and other wall systems that provide integral 

insulation comply with “Grade 1” insulation installation requirements 

where properly installed. 

(d) Cavity insulation is split, installed, and/or fitted tightly around 

wiring and other services.

(e) Exterior sheathing is not visible from the interior through gaps in 

the cavity insulation.

(f) Faced batt insulation is permitted to have side-stapled tabs, 

provided the tabs are stapled neatly with no buckling, and provided 

the batt is only compressed at the edges of each cavity, to the 

depth of the tab itself.

(b) In conditioned basement or crawlspace the following apply:

(i) insulation is installed in complete contact with the subfloor 

surfaces. 

(a) A maximum of 2% of the surface area of insulation is missing. 

Compression or incomplete fill amounts to 10 percent or less, 

presuming the compression or fill is a minimum of 70 percent of the 

intended fill thickness.

(h) “Grade 1” insulation must meet or exceed all requirements of 

“Grade 2” insulation.

703.1.2.3 Grade 2 installation is in accordance with the following:

703.2.1.1.1 Air Barrier and Thermal Barriers

Mass Construction

(1) Third party verification performed.

703.2.1 Insulation and air sealing is installed in accordance with all 

of the following, as applicable:

(ii) Floor insulation over vented or ambient conditions is enclosed 

on six sides.

(c) Floor insulation over unconditioned basements is not required 

to be enclosed on six sides. 

(d) Ceiling insulation is not required to be enclosed when the 

insulation is installed in complete contact with the drywall or 

plywood surfaces it is intended to insulate.

(e) Eave baffles or equivalent construction is installed to prevent 

wind washing.

(a) Standard insulation installation not in accordance with Grade 1 

or Grade 2 criteria.

(f) Installation with occasional installation defects is permitted: gaps 

around wiring, electrical outlets, plumbing and other intrusions; 

rounded edges or shoulders.

703.1.2.4 Grade 3 installation is in accordance with the following:

703.1.3 More than 75% of the above-grade exterior opaque wall 

area of the building is mass walls. 
APPENDIX B 223

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(d) Air impermeable insulation.

703.2.1.1.2 Plumbing and Wiring 

703.2.1.3 WALLS

703.2.1.4 CEILINGS and ATTICS

 0 Add'l Pts

 1 Add'l Pt

(a) 15 percent 1 Add'l Pt

(b) 30 percent 2 Add'l Pts

(c) 50 percent 3 Add'l Pts

703.3 FENESTRATION

Points Per 

Tables 

703.3.1(a) or 

703.3.1(b)

U-Factor and SHGC Climate Zone

0.45 0.30 1 and 2 8

0.35 0.30 3 8

0.30 Any 4 and 5 5

0.30 Any 6 and 8 6

0.55 0.35 1 to 3

0.55 Any 4 to 8

U-Factor and SHGC Climate Zone

0.45 0.25 1 and 2 10

0.35 0 .25 3 10

0.25 Any 4 and 5 10

0.25 Any 6 thru 8 12

0.50 0.35 1 to 3

0.50 Any 4 to 8

 0 Add'l Pts

2 Add'l Pts

703.4 HVAC Equipment Efficiency

(3) Insulation is in substantial contact with sheathing materials on 

one or more sides.

(2) Voids or areas of incomplete fill (less than 30% of full thickness) 

are 2% or less of the insulated area.

(4) Any exterior rigid insulation is tightly fitted or interlocking at the 

joints. 

(1) At a minimum, insulation is placed between the outside 

(ceiling, wall, or floor) and the pipes.

703.2.1.1.3 Narrow cavities are filled and batts are cut to fit.

703.2.1.1.5 Masonry fireplace equipped with gasketed doors, 

outside combustion air, and a chimney top damper.

(1) Exterior walls behind the tub/shower are insulated and include 

an interior and exterior air barrier.

(2) Air sealed type electrical outlet boxes are installed or the air 

barrier extends completely behind the boxes. Insulation is placed 

between the sheathing and the rear of electrical or phone boxes 

located on exterior walls. Electrical outlet boxes ar

703.2.1.2 Air barrier is installed at any exterior edge of insulation at 

floors, foundations, and crawlspaces including insulated floors 

above garages and cantilevered floors.

Table 703.3.1(b) - Enhanced Fenestration Specifications

Skylights and TDDs (maximum certified ratings)

Skylights and TDDs (maximum certified ratings)

Windows and Exterior Doors (maximum certified ratings)

Addition Note: Section 703.3.1 applies only to the new 

construction portion of additions. (Points available on the basis of a 

ratio of new window area to total window area (new window area 

divided by total window area.)

(1) At dropped ceilings and soffits, the air barrier is substantially 

aligned with insulation and any gaps are sealed with caulk, foam, or 

tape. 

(2) Where the overall air infiltration rate is greater than the 

requirements for new construction (as indicated in Section 

704.6.2.1), reduce the air infiltration of the whole building envelope 

by:

703.3.1 The NFRC-certified U-factor and SHGC for windows, 

exterior doors, skylights, and tubular daylighting devices (TDDs) are 

in accordance with Table 703.3.1(a) or (b). Decorative fenestration 

elements with a maximum of 15 square feet or 10% of the to

Table 703.3.1(a) - Enhanced Fenestration Specifications

Windows and Exterior Doors (maximum certified ratings)

Renovation Note: The air infiltration of the existing whole building 

envelope is evaluated. Based on the evaluation, choose one of the 

following: (Additional points awarded only where third-party 

verification is not performed.)

Renovation Note: Section 703.3.1 applies only to the replacement 

of existing windows. (Points available on the basis of a ratio of new 

window area to total window area (new window area divided by 

total window area.)

included above

included above

(3) An insulated cover is gasketed or sealed to the attic opening 

where a whole building or whole dwelling unit fan penetrates into 

the attic.

(1) Where the overall air infiltration rate is equal to or less than the 

requirements for new construction (as indicated in Section 

704.6.2.1), this item applies to the renovation.

Addition Note: Section 703.2.1 applies only to the new 

construction portion of additions.

(2) Access to vented attics, including knee wall doors, and/or drop 

down stairs, is caulked, gasketed, or otherwise sealed.

(3) Duplex and townhouse construction: In the common walls 

between dwelling units (e.g., gypsum shaft wall) an air barrier is 

installed to seal the gap between the common wall and the 

structural framing.

(2) Batt insulation is split or cut to fit around wiring and plumbing.

(3) Sprayed insulation is installed to encapsulate pipes where the 

pipe temperature is 180 degrees F (82.2C) or less. Wiring is 

fastened in place to prevent displacement prior to spraying.

(4) Skylight shafts and knee walls are air sealed. Insulation on attic 

knee walls and skylight shafts are physically supported by stapling 

in place, netting or using other mechanical attachment.

(5) Fireplace walls: Air barrier that is alligned with insulation; any 

gaps are sealed with caulk or foam.

703.2.1.1.4 HVAC register boots that penetrate the building 

envelope are caulked or sealed to the subfloor or drywall.
224 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

(1) Table 703.4.2(1) Gas and propane 

heaters:

Climate Zone AFUE Points

1 >90% 0

1 >92% 0

1 >94% 0

2 >90% 2

2 >92% 2

2 >94% 3

3 >90% 5

3 >92% 6

3 >94% 7

4 >90% 8

4 >92% 9

4 >94% 10

5 >90% 11

5 >92% 12

5 >94% 14

6 through 8 >90% 14

6 through 8 >92% 15

6 through 8 >94% 17

Table 703.4.2(2) Oil Furnace:

Climate Zone AFUE Points

1 >83% 0

1 >90% 0

2 >83% 1

2 >90% 2

3 >83% 3

3 >90% 5

4 >83% 3

4 >90% 8

5 >83% 7

5 >90% 11

6 through 8 >83% 7

6 through 8 >90% 14

(3) Gas Boiler: Points per Table 

703.4.2(3)

Climate Zone AFUE Points

1 >85% 0

1 >90% 0

1 >94% 0

2 >85% 1

2 >90% 2

2 >94% 3

3 >85% 3

3 >90% 5

3 >94% 7

4 >85% 4

4 >90% 8

4 >94% 10

5 >85% 6

5 >90% 11

5 >94% 14

6 through 8 >85% 7

6 through 8 >90% 14

6 through 8 >94% 17

Table 703.4.3.2(4) Oil Boiler: Points per Table 

703.4.2(4)

Climate Zone AFUE Points

1 >85% 0

1 >90% 0

2 >85% 1

2 >90% 2

3 >85% 3

3 >90% 5

4 >85% 4

4 >90% 8

5 >85% 6

5 >90% 11

6 through 8 >85% 7

6 through 8 >90% 14

1

Points per Table 

703.4.4

Climate Zone Efficiency Points

1 8.2HSPF 11.5EER 0

1 9.0HSPF 12.5EER 0

2 8.2HSPF 11.5EER 1 1 (1) 2 ton 8.5 HSPF

2 9.0HSPF 12.5EER 2

3 8.2HSPF 11.5EER 2

3 9.0HSPF 12.5EER 5

4 8.2HSPF 11.5EER 5

4 9.0HSPF 12.5EER 10

5 8.2HSPF 11.5EER 7*

5 9.0HSPF 12.5EER 11*

6 through 8 8.2HSPF 11.5EER 7*

6 through 8 9.0HSPF 12.5EER 12*

Points per Table 

703.4.5(1)

Climate Zone SEER (EER) Points

1 14 (11.5) 8

1 15 (12.5) 12

Table 703.4.5(1) - Air Conditioner and Heat Pump Cooling

Table 703.4.2(3) - Gas Boiler

Table 703.4.2(4) - Oil Boiler

703.4.2 Furnace and/or boiler efficiency is in accordance with one 

of the following: 

Table 703.4.2(1) - Gas / Propane Heaters

703.4.5 Cooling efficiency is in accordance with one of the 

following. Refrigerant charge is verified for conformance with 

manufacturer’s instructions.

703.4.4 Heat pump heating efficiency is in accordance with Table 

703.4.4. Refrigerant charge is verified to be in conformance with 

manufacturer’s instructions.

Table 703.4.2(2) - Oil Furnace:

703.4.1 Combination Space Heating and Water Heating System 

(“Combo” System) is installed using either a coil from the water 

heater connected to an air handler to provide heat for the building or 

dwelling unit, or a space heating boiler using an indirect 

Table 703.4.4 - Heat Pump Heating

*Zones 5-8 require consideration for use of resistance heat in cold 

climates when installing a heat pump.

703.4.3 Boiler equipped with temperature reset control or burner 

delay control. 

Points per Table 703.4.2(2)

Points per Table 703.4.2(1)
APPENDIX B 225

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1 17 (12.5) 18

1 19 (12.5) 24

2 14 (11.5) 6 6 (6)

2 15 (12.5) 10

2 17 (12.5) 14

2 19 (12.5) 18

3 14 (11.5) 2

3 15 (12.5) 4

3 17 (12.5) 6

3 19 (12.5) 8

4 14 (11.5) 2

4 15 (12.5) 3

4 17 (12.5) 4

4 19 (12.5) 4

5 14 (11.5) 1

5 15 (12.5) 2

5 17 (12.5) 3

5 19 (12.5) 3

6 through 8 14 (11.5) 1

6 through 8 15 (12.5) 2

6 through 8 17 (12.5) 3

6 through 8 19 (12.5) 3

Points per 

Table 

Table 703.4.5(2) - Water Source and Cooled Air Conditioners

Climate Zone EER, COP Points

1 15 4.0 18

2 15 4.0 14

3 15 4.0 6

4 15 4.0 4

5 15 4.0 3

6 through 8 15 4.0 3

(1) Open loop; >16.2 EER and > 3.6 COP 20

20

20

30

1

2

1

4

1

0 Add'l Pts

1 Add'l Pt

(1) Gas Water Heating

Size (gallons) Energy Factor POINTS

30 to < 40 0.64 1

40 to < 50 0.62 1

50 to < 65 0.6 1

65 to < 75 0.58 1

75 0.56 1

 Any 0.8 10

Size (gallons) Thermal Efficiency POINTS

Any 82-86% 1

 Any > 86% 10

(2) Electric Water Heating

Size (gallons) Energy Factor POINTS

30 to < 40 0.95 1

40 to < 50 0.94 1

50 to < 65 0.92 1

65 to < 80 0.9 1

80 to < 100 0.88 1

100 0.86 1

(3) Oil Water Heating

Size (gallons) Energy Factor POINTS

30 to < 50 0.59 1

50 0.55 1

 (4) Heat Pump Water Heating

Energy Factor POINTS

Heat Pump 1.5 7

Heat Pump 2 10

Points per Table 

703.5.2

Points for 

Desuper heater

5

2

(3) Direct expansion; >15.0 EER and > 3.5 COP

(4) Any type (open, closed or direct expansion); >24 EER and > 

4.3 COP

703.4.6 Ground source heat pump is installed by a Certified 

Geothermal Service Contractor in accordance with one of the 

following ENERGY STAR levels:

703.4.9 In multi-unit buildings, an advanced electric and fossil fuel 

submetering system is installed to monitor electricity and fossil fuel 

consumption for each unit. At a minimum, the information is 

available to the occupants on a monthly basis. 

703.4.7 ENERGY STAR, or equivalent, ceiling fans are installed. 

(Points awarded per building.)

703.4.8 Whole building or whole dwelling unit fan(s) with insulated 

louvers and a sealed enclosure is installed. (Points awarded per 

building.)

(1) Install a device providing monthly consumption information.

703.5 Water Heating Design, Equipment, and Installation

703.5.1 Water heater Energy Factor (EF) is equal to or greater 

than the following:

Points per Table 

703.5.1(3)

Table 703.5.1(1)(b) - Gas Water Heating

Points per Table 

703.5.1(4) Table 703.5.1(4) – Heat Pump Water Heating

(Storage with input rate of greater than 75,000 Btu/hr or 

instantaneous input rate greater than 200,000 Btu/hr)

Table 703.5.1(3) – Oil Water Heating

Points Per 

Tables 703.5.1(2)

Points Per 

Tables 

703.5.1(1)(a) or 

703.5.1(1)(b)

703.5.2 Desuperheater, s installed by a qualified installer or is preinstalled in the factory.

Table 703.5.2 – Desuperheater

Table 703.5.1(1)(a) - Gas Water Heating

Zone 1-4

(2) Closed loop; >14.1 EER and > 3.3 COP

Zone 5-8

Table 703.5.1(2) – Electric Water Heating

(Storage with input rate of 75,000 Btu/hr or less or instantaneous 

input rate of 200,000 Btu/hr or less)

(2) Install a device that can provide near real-time energy 

consumption information.

Renovation Note: Replace existing nonprogrammable thermostat.

703.4.10 An ENERGY STAR, or equivalent, programmable 

thermostat is installed to control each heating and cooling zone. 

(Points awarded per dwelling unit.)

(2) Water Source and Cooled Air Conditioners 

Addition Note: Section 703.4.10 applies to the new construction 

portion of additions. 

Climate Zone
226 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

703.5.4 Insulating hot water pipes 

1

1

 0 Add'l Pts

1 Add'l Pt

1

704 Additional Practices

704.2 Lighting and Appliances

4

8

8 125 $25 per fixture; 5 fixtures

 0 Add'l Pts

 1 Add'l Pt

(2) 75 percent 2 Add'l Pts

(3) 100 percent 3 Add'l Pts

2

2 No recessed.

 Mandatory 0 

Add'l Pts

 1 Add'l Pt

(1) 25% of lighting 2

(2) 50% of lighting 4

2

(1) Refrigerator 5 5 

(2) Dishwasher 2 2 

(3) Washing machine 4 4 

(1) replace existing refrigerator 2 Add'l Pts

(2) replace existing dishwasher 1 Add'l Pt

 1 Add'l Pt

704.2.6 Induction cooktop is installed. 1

1

5

Climate Zone and Overhang Depth

Vertical Distance 

between bottom of 

overhang and top of 

window sill

1 through 3 2' 8" <7' 4"

1 through 3 2' 8" <6' 4"

1 through 3 2' 4" <5' 4"

Addition Note: Section 703.5.4 applies only to the new or 

modified plumbing associated with the addition. 

703.5.3 Drain-water heat recovery system is installed in multifamily units. (Points awarded per building.)

704.3.1.1 Sun-tempered Design: Building orientation, sizing of 

glazing, and design of overhangs are in accordance with all of the 

following:

Renovation Note: Where hot water lines in the existing building 

are accessible, the hot water lines are insulated in accordance with 

Section 703.5.4. (To receive additional points, a minimum of 50 

percent of the existing hot water lines are insulated.)

704.2.1 Hard-wired lighting meets one of the following: 

704.1 Application of Additional Practice Points. Points from 

Section 704 can be added to points earned in Section 702 

(Performance Path), Section 703 (Prescriptive Path) or Section 

701.1.3 (alternative Bronze Level compliance).

703.5.5 Indirect fired water heater storage tanks heated from boiler 

systems are installed.

703.5.4.1 Hot water lines are insulated with a minimum of R-4 

insulation.

703.5.4.2 Boiler supply piping is insulated in unconditioned spaces.

(1) A minimum of 50% of the total hard-wired lighting fixtures, or 

the bulbs in those fixtures, qualify as ENERGY STAR or equivalent.

(2) A minimum of 50% of the total hard-wired lighting fixtures 

qualify as ENERGY STAR or equivalent.

704.2.5 ENERGY STAR or equivalent appliance(s) are installed:

(3) A minimum of 80% of the exterior lighting wattage has an 

efficiency of at least 40 lumens per watt or be a solar powered light 

fixture. 

704.2.2 The number of recessed light fixtures that penetrate the 

thermal envelope are less than 1 per 400 square feet of total 

conditioned floor area and are in accordance with Section 

701.4.3.4(2). 

704.2.3 Occupancy sensors are installed on indoor lights, and 

photo or motion sensors are installed on outdoor lights to control 

lighting. 

Addition Note: Section 704.2.1 applies only to the new 

construction portion of additions. 

Renovation Note: A percentage of the total lighting fixtures, or the 

lights in those fixtures, are replaced with fixtures or lights that 

qualify as ENERGY STAR or equivalent.

(1) 50 percent

Addition Note: Section 704.2.2 is mandatory for the new 

construction portion of additions.

Renovation Note: Section 704.2.2 applies where room for 

installation within the conditioned envelope is available. (To 

receive additional points, a minimum of 50% of the total 

recessed ceiling lights are in accordance with Section 

704.2.2.)

704.2.7 Occupancy sensors are installed for a minimum of 80% of 

hardwired lighting outlets.

704.3.1 Solar space heating and cooling.

Addition and Renovation Note: Section 704.2.5 applies as 

follows:

(3) replace existing washing machine

704.3 Renewable Energy/Solar Heating and Cooling

704.2.4 Tubular daylighting device (TDD) or a skylight with sealed, 

insulated, low-E glass is installed in rooms without windows. 

(Points awarded per building.)

(1) The long side (or one side if of equal length) of the building 

faces within 20o of true south.

(2) Vertical glazing area is between 5% and 7% of gross 

Conditioned Floor Area on the south face (also see Section 

704.3.1.1(8)).

(3) Vertical glazing area is less than 2% of gross Conditioned Floor 

Area on the west face, and glazing is ENERGY STAR compliant or 

equivalent.

(4) Vertical glazing area is less than 4% of gross Conditioned Floor 

Area on the east face and glazing is ENERGY STAR compliant or 

equivalent.

(5) Vertical glazing area is less than 8% of gross Conditioned Floor 

Area on the north face, and glazing is ENERGY STAR compliant or 

equivalent.

(6) Skylights, where installed, are in accordance with the following:

(a) Shades and insulated wells are used and all glazing is 

ENERGY STAR compliant or equivalent.

(b) Horizontal skylights are less than 0.5 % of Finished Ceiling 

Area

(c) Sloped skylights on slopes facing within 45o of true South, East 

or West are less than 1.5% of the Finished Ceiling area

(7) Overhangs or adjustable canopies or awnings or trellises 

provide shading on south facing glass for the appropriate climate 

zone in accordance with Table 704.3.1.1:

Table 704.3.1.1 Southern Window Overhang Depth
APPENDIX B 227

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1 through 3 2' 0" <4' 4"

1 through 3 2' 0" <3' 4"

4 through 6 2' 4" <7' 4"

4 through 6 2' 4" <6' 4"

4 through 6 2' 0" <5' 4"

4 through 6 2' 0" <4' 4"

4 through 6 1' 8" <3' 4"

7 and 8 2' 0" <7' 4"

7 and 8 1' 8" <6' 4"

7 and 8 1' 8" <5' 4"

7 and 8 1' 4" <4' 4"

7 and 8 1' 0" <3' 4"

0 Add'l Pts

 1 Add'l Pt

1

3

1

(c) Covered porches

 0 Add'l Pts

 1 Add'l Pt

4

704.3.2 Solar water heating

SEF - Electric Tank SEF - Gas Tank POINTS

1.30 - 1.50 0.85 - 1.00 8 8 4,500

1.51 - 1.80 1.01 - 1.20 11

1.81 - 2.30 1.21 - 1.50 14

2.31 - 3.00 1.51 - 2.00 17

3.01 2.01 20

 1 Add'l Pt

(8) The south face windows have a SHGC of 0.40 or higher.

(9) Return air or transfer grilles/ducts are in accordance with 

Section 704.4.5. 

704.3.1.3 Passive cooling design features are in accordance with 

three or more of the following:

(1) Exterior shading is provided on east and west windows using 

one or a combination of the following strategies:

(a) Vine covered trellises with the vegetation separated a minimum 

of 1 foot from face of building.

Addition Note: Section 704.3.1.1 applies to the new construction 

portion of additions. (Points are available on the basis of a ratio of 

new building area to total building area. New building area divided 

by total building area.)

Renovation Note: Section 704.3.1.1 applies to existing 

construction. 

704.3.1.2 Automated solar protection is installed to provide 

shading for windows.

Points for three items:

Points for one additional item:

(b) Moveable awnings or louvers

(d) Attached or detached conditioned/unconditioned enclosed 

space that provides full shade of east and west windows (e.g., 

detached garage, shed or building)

(2) Overhangs are installed to provide shading on south-facing 

glazing in accordance with Section 704.3.1.1(7). (Points not 

awarded if points are taken under 704.3.1.1.)

(3) Windows and/or venting skylights are located to facilitate cross 

ventilation.

(4) Solar reflective roof or radiant barrier is installed in Climate 

Zones 1, 2 or 3 and roof material meets a 3 year aged criteria of 

0.50.

(5) Internal exposed thermal mass is a minimum of three inches in 

thickness. Thermal mass consists of concrete, brick, and/or tile that 

are fully adhered to a masonry base or other masonry material and 

is in accordance with one or a combination of the fo

(a) A minimum of one square foot of exposed thermal mass of floor 

per three square feet of gross finished floor area. 

(b) A minimum of three square feet of exposed thermal mass in 

interior walls or elements per square foot of gross finished floor 

area.

(6) Roofing material is installed with a minimum 0.75 inch 

continuous air space offset from the roof deck from eave to ridge.

(2) Additional thermal mass for any room with south-facing glazing 

of more than 7% of the finished floor area is provided in accordance 

with the following:

704.3.1.4 Passive solar heating design. In addition to the suntempered design features in Section 704.3.1.1, all of the following 

are implemented: 

Addition Note: Section 704.3.1.3 applies to the new construction 

portion of additions. (Points are available on the basis of a ratio of 

new buidling area to total building area. New building area divided 

by total building area.)

Renovation Note: Section 704.3.1.3 applies to existing 

construction. A minimum of one design feature is required.

(1) Additional glazing, no greater than12%, is permitted on the 

south wall. This additional glazing is in accordance with the 

requirements in Section 704.3.1.1. 

704.3.2.1 Solar water heater. SRCC (Solar Rating & Certification 

Corporation) OG 300 rated, or equivalent, solar domestic water 

heating system is installed. Solar Energy Factor (SEF as defined by 

SRCC) is in accordance with Table 704.3.2.1.

704.3.3 Additional renewable energy options

Table 704.3.2.1 - Solar Hot Water Systems

(a) Thermal mass is solid and a minimum of 3” in thickness. 

Where two thermal mass materials are layered together (e.g. 

ceramic tile on concrete base) to achieve the appropriate thickness, 

they are fully adhered to (touching) each other. 

(b) Thermal mass directly exposed to sunlight must be provided in 

the following minimum ratios: 

(i) Above latitude 35o: 5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(ii) Latitude 30o to 35o: 5.5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(iii) Latitude 25o to 30o: 6 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(c) Thermal mass not directly exposed to sunlight is permitted to be 

used to achieve thermal mass requirements of Section 704.3.1.4 

(2) based on a ratio of 40 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(3) In addition to return air or transfer grilles/ducts required by 

Section 704.3.1.1, provisions for forced airflow to adjoining areas 

are implemented as needed. 

Addition and Renovation Note: Section 704.3.2.1 applies to 

systems in additions and/or existing buildings. 
228 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1

0.5

704.4 Ducts

5 5 2006 IECC M1601.1

 Mandatory 0 

Add'l Pts

 1 Add'l Pt

15

15

12

 0 Add'l Pts

 2 Add'l Pts

5

5 0 Plans indicate returns every room.

 0 Add'l Pts

 2 Add'l Pts

704.5 HVAC Design and Installation

1

1 0 The code does not require Manual S, 

however, Manual D requires it.

1

1 0 Standard.

3

3

Standard.

Standard.

Standard.

Standard.

149 Allow team of 2 2 hours at field rate.

Standard.

1

1 0 Trane and others include 15' of line set 

alternate refrigerant with product.

4

5

5 Included in verifier's field visit. See 701.3.

260 6% leakage modeled for 15% improvement.

0 2006 IECC required for SLA .00036.

0 

0 

(a) 5 ACH50 0.25 nat 3

(b) 4 ACH50 0.2 6

(c) 3 ACH50 0.15 9

(d) 2 ACH50 0.1 12

(e) 1 ACH50 0.05 15

(4) Air handler setting/fan speed is set per manufacturer’s 

instructions.

Renovation Note: Section 704.4.5 applies to renovations that 

involve the demolition, reconfiguration, and/or addition of interior 

walls, or a change in the heating, cooling, and ventilation system of 

the building, or a test of the building for balanced p

704.6 Installation and Performance Verification

(3) Burner is set to fire at nameplate input.

704.6.1 Third party onsite inspection is conducted to verify 

conformance with all of the following, as applicable. Minimum of 2 

inspections are performed. One inspection after insulation is 

installed and prior to being covered, and another inspection up

Addition Note: Section 704.4.5 applies to the new construction 

portion of additions. 

Addition Note: New construction portion of additions.

704.4.2 Space heating is provided by a system that does not 

include air ducts.

704.4.4 Ductwork is in accordance with all of the following: 

(1) Building cavities are not used as return ductwork.

704.4.3 Space cooling is provided by a system that does not 

include air ducts.

704.3.3.1 Photovoltaic panels are installed on the property. 

(Points awarded per every 100 watts DC of the rated PV 

system) 

704.3.3.2 Other onsite renewable energy source is installed (e.g., 

wind energy, onsite micro-hydro power, active solar space heating 

systems). (Points awarded per every 1/10 kW of the system) 

704.4.1 Duct system is sized, designed, and installed according to 

ACCA Manual D or equivalent.

Renovation Note: Section 704.4.1 applies only where the duct 

system in the existing building is readily accessible, and the duct 

system is sized, designed, and installed in accordance with ACCA 

Manual D or equivalent. A minimum of 75% of the duct runs a

(1) Start-up procedure is performed according to manufacturer’s 

instructions.

(2) Refrigerant charge is verified by super-heat and/or sub-cooling 

method.

(2) Heating and cooling ducts and mechanical equipment are 

installed within the conditioned building space .

(3) Ductwork is not installed in exterior walls 

704.4.5 Return ducts or transfer grilles are installed in every room 

with a door. This practice does not apply to bathrooms, kitchens, 

closets, pantries, and laundry rooms. 

Addition Note: Section 704.4.4 applies to the new construction 

portion of additions. 

Renovation Note: Section 704.4.4 applies to renovations that 

involve the demolition, reconfiguration, and/or addition of interior 

walls, or a modification in the duct system of the building, or an 

intentional effort to implement the practices in Section 

704.5.1 ACCA Manual S or equivalent is used to select heating 

and/or cooling equipment.

704.5.2 HVAC contractor and service technician are certified by a 

nationally or regionally recognized program such as North American 

Technician Excellence, Inc. (NATE), Building Performance Institute 

(BPI), Radiant Panel Association, or manufacturers’ tr

704.5.3 Performance of the heating/cooling system is verified by 

the HVAC contractor in accordance with all of the following: 

(5) Total air flow is within 10% of design flow.

704.5.5 Manufacturer’s label or printed specifications for sealed air 

handler (except furnaces) indicates the leakage is less than or equal 

to 2% of design airflow at a pressure of 1-inch w.g. (1250 Pa). Air 

handlers are tested with inlets, outlets, an

(1) Ducts are installed per IRC/IMC and ducts are sealed.

(2) Building envelope air sealing is installed.

704.5.4 HVAC equipment operates using an alternate refrigerant 

containing no HCFCs. (Points awarded only until January 20, 

2010.)

(6) Total external system static does not exceed equipment 

capability at rated airflow. 

(3) Insulation is installed in accordance with Section 703.1.2 

3. Fireplaces and Fuel Burning Appliances are in accordance with 

901.2.

The maximum leakage rate is in accordance with:

(4) Windows, skylights, and doors are flashed, caulked, and sealed 

in accordance with manufacturer’s recommendations and in 

accordance with Section 703.2.1.

704.6.2 Third party testing is conducted to verify performance. 

704.6.2.1 Building envelope leakage rate is demonstrated by 

blower door test. In addition to the test, the following practices are 

required:

1. Whole building ventilation is provided in accordance with Section 

902.2.

2. Fossil fuel furnace and water heater is sealed combustion or 

power vented in accordance with Section 901.1.
APPENDIX B 229

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

15

15 260 (15) 0 See 704.6.1(1) for cost of duct seal. BD and 

DB tests here not subtracted.

5

5 680 Move ducts and A/H inside building envelope. 

Cost is SF price to consumer given up to 

equipment - 

15

8

 0 Add'l Pts

1 Add'l Pt

 3 Add'l Pts

7 Points Max

2 2 0 

(2) Energy monitoring device 4 4 150 

(3) Energy management control system 7

2

5

Base Pts. 16 0 2 0 15 0 19 175 8 382 Ch. 8 Subtotal 

Cost/Point 0 0 0 48

2 2 -2

Water heater location in attic.

3

Runs can be minimized further by locating 

the water at midpoint of bath and kitchen.

6

6

8 8 0

Simple to implement in a small house with 

one bath

 Mandatory 0 

Add'l Pts

Mandatory

Points Reduced 

by Half

 0 Add'l Pts

Points Reduced 

by Half

2 Add'l Pts

2 2

8 8

12

1 Add'l Pt

1 Add'l Pt

(1) Builder selects a renewable energy service plan provided by the 

local electrical utility for interim (temporary) electric service. The 

builder’s local administrative office has renewable energy service.

(2) The buyer of the home selects a renewable energy service plan 

provided by the utility prior to occupancy of the home.

704.6.2.3 Balanced HVAC air flows are demonstrated by flow hood 

or other acceptable flow measurement tool. Test results in 

accordance with both of the following:

704.6.2.2 The entire central HVAC duct system, including air 

handlers and register boots, is tested for leakage at a pressure 

differential of 0.1 inches w.g. (25 Pa). The maximum leakage as a 

percent of the system design flow rate is in accordance with 

(1) 6% for ductwork entirely outside the building's thermal 

envelope.

(2) 6% for ductwork entirely inside the building's thermal envelope.

(a) Use of structured-type plumbing with demand controlled hot 

water loops, in which the volume of water contained in the pipe and 

fixture fittings downstream of the recirculating trunk line is a 

maximum of 4 cups (0.25 gallons).

(1) All hot water piping which runs to the plumbing fixtures in both 

the kitchen and bathrooms is 40-feet or less in length from the 

water heater and is sized in accordance with the code for the 

specified application.

(2) All hot water piping which runs to the plumbing fixtures in both 

the kitchen and bathrooms is 30-feet or less from the water heater 

and is sized in accordance with the code for the specified 

application.

(a) Measured flow at each supply and return register is within 25% 

of design flow.

801.0 Intent. Measures that reduce indoor and outdoor water 

usage are implemented.

801.1. Indoor hot water usage is reduced by one of the following 

practices: 

705 Innovative Practices

801 Indoor and Outdoor Water Use

(1) Programmable communicating thermostat

705.2 Renewable energy service plan is as follows:

(b) Implement an engineered parallel piping system (i.e. manifold 

system) in which the hot water line distance from the water heater 

to the parallel piping system is less than 15 feet and the parallel 

piping to the fixture fittings contains a maximum of 8

(c) Central core plumbing system with all plumbing fixture fittings 

(e.g., faucets & showerheads) located such that the volume of 

water contained in each pipe run between the water heater and 

fixture fitting is a maximum of 6 cups (0.38 gallons).

1

(a) Tankless water heater is installed at point of use and is served 

only by cold water or a solar-assisted system.

(4) Pipe runs exceeding 40-feet from the water heater to fixture 

locations are aided by one of the following: 

(1) Dishwasher

(2) Replace existing washing machine

Addition and Renovation Note: Section 801.2 applies as follows 

when existing appliance(s) are properly disposed of and not placed 

into secondary service in a dwelling unit. 

(1) Replace existing dishwasher

(3) Washing machine with a water factor of 6.0 or less

(2) Washing machine

(b) On demand hot water recirculation system is installed.

801.2 Energy Star® or equivalent water-conserving appliances are 

installed 

Addition Note: Section 801.1 applies only to the new construction 

portion of addition(s) that alter portions of a building with hot water 

applicances and/or fixtures.

Renovation Note: Section 801.1 applies only to renovation 

projects that have the ability to meet the requirements of Section 

801.1. (Renovation projects that are unable to meet the length 

of pipe runs indicated in Section 801.1, but are able to shorten 

e

(1) Minimum of 25% to less than 50% reduction in total pipe length 

or volume.

(2) More than or equal to 50% reduction in total pipe length or 

volume.

Addition Note - Section 801.1.1(3): Where a new hot water 

system is provided in an addition, this item applies. (Points for 

Section 801.1.1(3)(a), (b), and (c).

Addition and Renovation Note - Section 801.1.1(3): Section 

801.1.1(3) applies only where hot water lines in the existing 

building are accessible. (To receive additional points, a 

minimum of 50 percent of the hot water lines are in 

accordance with Section

(3) One of the following piping system designs is implemented:

(1) The overall energy performance features of the existing building 

are equal to or better than the requirements for new construction.

(2) If the overall energy performance features of the existing 

building are less than the requirements for new construction, third 

party testing is conducted to verify performance claimed in Sections 

701.4.2.1, 703.1 and 703.2.1.

705.1 Energy consumption control. A whole building or whole 

dwelling unit device is installed that controls or monitors energy 

consumption. 

(3) 6% for ductwork both inside and outside the building thermal 

envelope.

Renovation Note: Section 704.6.2 applies as follows: Evaluate 

the performance features of the existing whole building envelope. 

Choose one of the following based on the evaluation:

Addition Note: Section 704.6.2 applies to the new construction 

portion of additions. (Points are available on the basis of a ratio of 

new area to total area.) (New area divided by total area.)

(b) Total airflow is within 10% of design flow.

CHAPTER 8: WATER EFFICIENCY
230 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1 Add'l Pt

1 1

1 Point 

(3 Points Max)

1 0

Showerhead flow rate max. EPA is 2.5.

1 Add'l Pt 1 0 -1 0

2 Add'l Pts 2 0

Specify lower flow rate faucet/aerator.

0 Add'l Pts

1 Add'l Pt

1 Add'l Pt

1 

3 Pts Max 1

2 Add'l Pts 2

1 Add'l Pt

2 Add'l Pts

2 Add'l Pts

1 

3 Pts Max

1 Add'l Pt 6 

Pts Max

Mandatory

6 

18 Pts Max

6 175 Install low flow toilet.

4 

Max 4 Points

6 

Add'l Points

6 0

0 Add'l Pts

1 Add'l Pt 

10 Pts. Max

2

4

4

4

4

6

1 Add'l Pt

2 Add'l Pts 

3

1 Add'l Pt

1 Add'l Pt

2

1 Add'l Pt

2 Add'l Pts

4

4

801.4 Showerheads

801.4 (3&4) All shower compartments in the home comply with 

801.4 (1&2).

801.6 Water closets and urinals. Water closets and urinals are 

in accordance with the following: (For water closets, points 

awarded for either Section 801.6 or 802.2, but not both.)

(2) A water closet is installed with an effective flush volume of 1.28 

gallons or less when tested in accordance with ASME A112.19.2 

(all water closets) and ASME A112.19.14 (all dual flush water 

closets), and is in accordance with EPA WaterSense Tank-Typ

Addition Note: Section 801.4 applies only to additions that include 

a minimum of one bath or shower.

801.5.1 Water-efficient lavatory faucets with 1.5 gpm or less 

maximum flow rate when tested at 60 psi in accordance with 

ASME A112.18.1 are installed.

Renovation Note: Section 801.4 applies only to renovations that 

include one or more bathrooms with a bath or shower. (Points 

awarded per fixture.)

Addition and Renovation Note: Existing showerhead is replaced 

with a showerhead that has a flow rate in accordance with Section 

801.4. (Points awarded per additional showerhead.)

(3) Replace existing washing machine with a water factor of 6.0 or 

less

801.5.2 Self-closing valve, motion sensor, metering, or pedalactivated faucet is installed to enable intermittent on/off operation. 

(Points awarded per fixture.)

Renovation Note: Additional points for Section 801.5.2 apply 

where installed.

Renovation Note: Renovations that do not include bathrooms 

receive points for replacing exisiting water closets with water 

closets in accordance with Section 801.6 (Points awarded per 

fixture.)

4) All water closets and all urinals are in accordance with Section 

801.6(2) or Section 801.6(3), as applicable. 

(3) A urinal is installed with a flush volume of 0.5 gallons or less 

when tested in accordance with ASME A112.19.2.

(1) Gold and Emerald Levels: All water closets and urinals are in 

accordance with either Section 801.6 or 802.2.

801.7.4 The irrigation system(s) is controlled by a smart controller: 

(1) Evapotranspiration (ET) based irrigation controller with a rain 

sensor 

(1) High distribution uniformity (DU) rotating spray heads

(3) Bubblers

(2) Drip irrigation

Addition Note: Section 801.7.2 applies to additions that increase 

the building footprint or modify an existing irrigation system.

Renovation Note: Section 801.7.2 applies to renovations with 

existing irrigation systems that are modified, or to renovations 

where a new irrigation system is installed or the existing irrigation 

system is replaced.

Addition Note: Section 801.7.3 applies to additions that increase 

the building footprint or affect the irrigation system.

Renovation Note: Section 801.7.3 applies only to renovations with 

existing irrigation systems that are modified, or to renovations 

where a new irrigation system is installed or the existing irrigation 

system is replaced.

801.7.3 Irrigation system is zoned separately for turf and bedding 

areas.

(2) Soil moisture sensor based irrigation controller

(5) Soaker hose

(6) Subsurface irrigation

1) designed by a professional in accordance with EPA WaterSense 

requirements or equivalent

801.7.2 Irrigation system is in accordance with both of the 

following: 

Renovation Note: Section 801.7.1 applies only to renovations of 

the landscape, hardscape, or outdoor living areas with existing 

irrigation systems or to renovations that replace the irrigation 

system.

2) installed in accordance with EPA WaterSense program or 

equivalent 

Addition and Renovation Note: Section 801.7.1 applies only to 

additions that increase the building footprint or affect the irrigation 

system.

801.3 A minimum of one food waste disposer is installed at the 

primary kitchen sink. 

801.4 (1&2) 1) The total showerhead flow rate at any point in time, 

for all showerheads in each shower compartment is less than 2.5 

gpm, tested at 80 psi per ASME A112.18.1/CSA B125.1. 2) In 

addition the showerheads must be equipped with an automatic com

(1) a bathroom (Points awarded for each bathroom.)

(2) all lavatory faucets in the home meet the conditions of 801.5.1

Addition Note: Section 801.5.1 applies only to additions that 

include a bathroom.

Renovation Note: Section 801.5.1 applies only to renovations of 

existing bathrooms.

(4) Drip emitters

Addition and Renovation Note: Section 801.6 applies only to 

additions and renovations that include bathrooms. 

801.7 Irrigation systems 

801.7.1 A low-volume, irrigation system is installed for each 

landscape type utilized: (Points awarded for each type of 

irrigation system installed.)

Addition and Renovation Note: Replace all faucets in nonrenovated bathrooms with faucets that are in accordance with 

Section 801.5.1. 

(3) All shower compartments installed meet the above conditions 

and are 2.0 to less than 2.5 gpm. 

(4) All shower compartments installed meet the above conditions 

and are 1.6 to less than 2.0 gpm. 

801.5 Faucets
APPENDIX B 231

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

15

15 0

6 6 382 

2

2 0 Distritution by gravity.

1

4 Points 

(per fixture)

10

2 Add'l Pts

5 Add'l Pts

24 Points Max

Mandatory

8

8 Add'l Points

2

Base Pts. 43 0 10 0 33 215 16 83 52 4,933 Ch. 9 Subtotal 

Cost/Point 0 0 7 5 95 

5

5 0 Furnace and water heater are electric.

Mandatory 

Mandatory 

2 Additional 

Points

5

5 0 

2 Additional 

Points

Electric appliances.

5

3

5

2 Additional 

Points

2 2 0 -2

5 5

Costs to move into conditioned space in 

704.6.2.2.(2). Cost of higher eff. in 702.

7

4

6

6

6

6

3) All toilets and urinals are in accordance with Section 802.2 (2). 

(1) Each water closet flushed by reclaimed or recycled water.

(2) Irrigation from reclaimed or recycled water onsite

802.2 Composting or waterless toilets and/or urinals. 

Composting or waterless toilets and/or urinals are in accordance 

with the following: (For water closets, points awarded for either 

Section 802.2 or 801.6, but not both) 

Addition and Renovation Note: Additional points are available for 

Section 802.1 as follows: 

2) irrigation from reclaimed or recycled water onsite

1) each water closet flushed by reclaimed or recycled water

(3) No irrigation is installed and a landscape plan is developed in 

accordance with Section 503.5(1) as applicable. (Points must be 

taken in 503.5(1) in order to receive points for 801.7.4(3)

801.8 Rainwater collection and distribution is provided.

2) Composting or waterless toilet and/or urinal is installed. (Points 

awarded per fixture)

(1) Rainwater is collected and used 

(2) Rainwater is distributed using a renewable energy source or 

gravity.

801.9 Water Filters. Water filter is installed to improve water quality 

for the whole building or whole dwelling unit.

802.1 Gray water (as specified in ICC IRC, Appendix O) is 

separated and reused, as permitted by local building code. (Points 

awarded for either Section 802.1(1) or 802.1(2), not both)

(1) Excess Water Flow Shutoff

(2) Leak Detection System

802.3 Automatic shutoff water devices. One of the following 

automatic shutoff water supply devices is installed. Where a fire 

sprinkler system is present, installer is to ensure the device will not 

interfere with the operation of the fire sprinkler system

1) Gold and emerald levels: All water closets and urinals are in 

accordance with either Section 802.2 or Section 801.6. 

CHAPTER 9: INDOOR ENVIRONMENTAL QUALITY

901 Pollutant Source Control

901.0 Intent. Pollutant sources are controlled. 

901.1 Space and water heating options

901.1.3 The following combustion space heating and water heating 

equipment is installed within conditioned space. 

(1) Direct vent furnace or boiler

(2) (a) Power vent water heater

901.1.1 Natural draft space heating or water heating equipment is 

not located in conditioned spaces, including conditioned crawl 

spaces. Natural draft equipment is permitted to be installed within 

the conditioned spaces if located in a mechanical room that has an 

outdoor air source, and is otherwise sealed and insulated to 

separate it from the conditioned space(s).

Addition Note: Section 901.1.1 applies to additions that include 

the use of natural draft space heating or water heating equipment.

901.1.2 Air handling equipment or return ducts are not located in 

the garage, unless placed in isolated, air-sealed mechanical rooms 

with an outside air source. 

Renovation Note: Section 901.1.1 applies to renovations that 

include areas where natural draft space heating or water heating 

equipment is located.

Renovation Note: Additional points are available for any renovation 

that modifies all of the existing building's natural draft space heating 

or water heating equipment in accordance with Section 901.1.1

Renovation Note: Section 901.1.2 applies to renovations that 

modify existing duct systems.

 (b) Direct vent water heater

901.2.1(2)(b) Factory-built wood burning fireplaces are in 

accordance with the certification requirements of UL 127 and are 

EPA certified.

Renovation Note: Section 901.1.3 applies to renovations that 

replace existing space heating and water heating combustion 

equipment with equipment in accordance with Section 901.1.3 for 

new construction.

901.1.4 The following electric equipment is installed:

1) Heat pump air handler in unconditioned space

2) Heat pump air handler in conditioned space 

901.2.1(1) Natural gas and propane fireplaces that are power 

vented or direct vented, are equipped with permanently fixed glass 

fronts or gasketed doors, and comply with ANSI Z21.88/CSA 2.33a 

or ANSI Z21.50/CSA 2.22 

901.2 Fireplaces and Fuel Burning Appliances (except cooking 

appliances, clothes dryers, water heaters, and furnaces) located in 

conditioned space are code compliant, vented to the outdoors, and 

have adequate combustion and ventilation air provided to minimize 

spillage or back-drafting, in accordance with the following: All of 

the following items are mandatory, if applicable, for 

certification.

901.2.1(2)(a) Wood burning fireplaces are equipped with gasketed 

doors designed to operate with the doors closed, outside 

combustion air, and a means is provided for sealing the flue to 

minimize interior air (heat) loss when not in operation.

901.2.1(2)(c) Wood stove and fireplace inserts, as defined in UL 

1482, Section 3.8 are in accordance with the certification 

requirements of UL 1482 and are in accordance with the emission 

requirements of the EPA Certification and the State of Washington 

W

901.2.1(2)(d) Pellet (biomass) stoves and furnaces are in 

accordance with the requirements of ASTM E1509 or are EPA 

Certified. 

901.2.1(2)(e) Masonry heaters are in accordance with the 

definitions in ASTM E1602 and ICC IBC, Section 2112.1. 
232 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2 Add'l Pts

2 Add'l Pts

2 Add'l Pts

7 7

Mandatory 

2 Points

Mandatory 

2 Points

4

10 10

Mandatory 

1 Add'l 

Point

3 Add'l 

Points

10 points 

max.

Mandatory

Meets.

2 Points per 

Product Group

2 0 Masterbrand cabinets (Aristokraft) have 75% 

by virtue of KCMA certification.

2 Points per 

Product Group

No hardwood plywood.

3 Points per 

Product Group

See Aristokraft note above.

4 Points per 

Product Group

4 0 Interior doors and trim.

4 Points per 

Product Group

2 Add'l Pts

Mandatory

No carpeting is installed. Laminated wood 

product.

No padding installed.

6

2

2

2 Add'l Pts

2 Add'l Pts

0 Add'l Pts

1 Add'l Pts

6

6 2,493 Respecify hard flooring to comply (1/2 the 

house-leave cork in common areas).

4

4 941 Specify insulation, gypsum board and paints 

with low VOC and low emmitting products. 

Cost covers paperless drywall and low VOC 

paint. Insulation should be at n/c.

5

5 0 (5) 0

901.3 Garages are in accordance with the following:

Renovation Note: Additional points are available for removing or 

rendering permanently unusable each existing wood-burning 

fireplace that is not in accordance with Section 901.2.1(2)(a) in 

areas other than the main renovation area.

901.3(1)(a) Where installed in the common wall between the 

attached garage and conditioned space, the door is tightly sealed 

and gasketed. 

Renovation Note: Removal of or rendering permanently unusable 

an existing fireplace and/or other fuel-burning appliances that are 

not in accordance with Section 901.2.1.

Renovation Note: Additional points are awarded for the 

replacement of each existing fireplace that is not in accordance with 

Section 901.2.1 with a fireplace that is in accordance with Section 

901.2.1

901.2.2 Fireplaces, woodstoves, pellet stoves, or masonry heaters 

are not installed. 

901.3(1)(b) A continuous air barrier is provided between walls and 

ceilings separating the garage space from the conditioned living 

spaces. 

901.3(1)(c) For one and two-family dwelling unit attached garages, 

a 100 cfm or greater ducted, or 70 cfm or greater unducted wall 

exhaust fan is installed and vented to the outdoors, designed and 

installed for continuous operation, or has controls (e.g., motion 

detectors, pressure switches) that activate operation for a 

minimum of 1 hour when either human passage door or roll-up 

automatic doors are operated. For ducted exhaust fans, the fan 

airflow rating and duct sizing are in accordance with Appendix A. 

(If you claim points for 901.3(1)(c), you cannot claim points for 

901.3(2). 

901.3(2) A carport is installed, the garage is detached from the 

building, or no garage is installed. (If you claim points for 901.3(2), 

you cannot claim points for 901.3(1)(a), 901.3(1)(b), or 901.3(1)(c).

Addition Note: Section 901.3 applies where the addition is a 

garage or shares a continuous air barrier with a garage.

901.5(2) A minimum of 85% of installed carpet area, carpet 

cushion (padding), and carpet adhesives are in accordance with the 

emission levels of CDPH 01350, as certified by a third-party 

program, such as the Carpet and Rug Institute’s (CRI) Green Label 

Pl

(a) Carpet

(b) Carpet cushion

901.5 Carpets are in accordance with the following:

901.5(1) Wall-to-wall carpeting is not installed adjacent to water 

closets and bathing fixtures .

901.7 Wall coverings. A minimum of 85% of wall coverings are in 

accordance with the emission concentration limits of CDPH 01350 

(using the office scenario), as certified by a third-party program, 

such as the Scientific Certification Systems (SCS) Indoor 

Advantage Gold Program or the Greenguard Environmental 

Institute's Children and Schools Certification Program. 

901.8 Architectural coatings. A minimum of 85% of the 

architectural coatings are in accordance with one of the following 

conditions:

(c) Carpet adhesives

901.6 Hard-surface flooring. A minimum of 85% of installed hardsurface flooring is in accordance with the emission concentration 

limits of CDPH 01350 (using the office scenario), as certified by a 

third-party program, such as the RFCI's FloorScore Indoor Air 

Certification Program or the Greenguard Environmental Institute's 

Children and Schools Certification Program. 

Renovation Note: Section 901.5(2) applies to renovations where 

existing carpet is replaced. Remove existing carpet and perform 

one of the following repair methods:

1) Existing carpeted floor area is exposed, cleaned, and finished 

and is used as non-carpeted finished floor.

2) Carpet is installed in accordance with Section 901.5.

3) New non-carpet flooring product in compliance with an approved 

green labeling program(s) is installed.

901.8.1 Site-applied interior products are in accordance with one or 

more of the following: 

(1) Zero VOC, determined by EPA Method 24 (VOC content below 

the detection limit for the method). 

901.4(1) Structural plywood used for floor, wall, and/or roof 

sheathing is compliant with DOC PS 1 and/or DOC PS 2. OSB 

used for floor, wall, and/or roof sheathing is compliant with DOC PS 

2. The panels are made with moisture-resistant adhesives. The 

trademark indicates these adhesives as follows: Exposure 1 or 

Exterior for plywood, and Exposure 1 for OSB. 

901.4(2-6) Wood Materials. A minimum of 85% of material within a 

product group (i.e. wood structural panels, countertops, composite 

trim/doors, custom woodwork, and/or component closet shelving) is 

manufactured in accordance with the following: 

(2) Particleboard and MDF (medium density fiberboard) is 

manufactured and labeled in accordance with CPA A208.1 and 

CPA A208.2, respectively.

Renovation Note: Section 901.3 applies to renovations that involve 

construction adjacent to an attached garage.

Renovation Note: A focused effort to create a continuous air 

barrier between the garage and conditined space, including 

penetrations, occurring between walls and ceilings separating the 

garage and conditioned space.

(4) Particleboard, MDF, or hardwood plywood is in accordance with 

CPA 2.

Renovation Note: Additional points for Section 901.4 apply to 

renovations that replace all existing countertops, shelving, and other 

nonstructural products.

(3) Hardwood plywood is in accordance with HPVA HP-1 and HUD 

Title 24, Part 3280.

(5) Composite wood or agrifiber panel products contain no added 

urea-formaldehyde or are in accordance with the CARB Composite 

Wood Air Toxic Contaminant Measure Standard.

(6) Non-emitting products. 
APPENDIX B 233

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

8

8 0 Specify low Voc paints. See cost in 901.6

Mandatory 

1 Add'l Point

5

5

108 Case adhesive - add to base.

8 Case caulk - add to base.

5

5 0

5

2

2

3

Require better specs on cabinets.

5

2 Add'l Pts

4

4 0 Insulation can be respec'd to meet this 

criteria.

1

1 0 Specify.

3

3

1

1 44

1

1

Mandatory

Mandatory

Complies.

Mandatory

Complies.

(2) CARB Suggested Control Measure for Architectural Coatings 

(3) GS-11

(b) 100 grams/liter non flat

(c) 350 grams/liter clear wood varnish

(4) VOC limits in accordance with:

(a) 50 grams/liter flat 

901.9.1 For exterior low-VOC adhesives and sealants, a minimum 

of 85% of site-applied products used for the installation of subfloors 

and on the exterior of the project are in accordance with one of the 

folllowing: 

(1) The California Air Resources Board consumer products 

regulation as follows: 

(d) 550 grams/liter clear wood lacquer 

901.8.2 Site-applied interior products are in accordance with the 

emissions levels of CDPH 01350, as certified by a third party 

program such as the Scientific Certification Systems (SCS) Indoor 

Advantage Gold Program or the Greenguard Environmental 

Institute's Children and Schools Certification Program.

Addition and Renovation Note: Section 901.8 applies when the 

building is occupied during construction.

901.9 Adhesives and Sealants. 

c) The VOC content of all other caulks and sealants not to exceed 

2% by weight or 30 grams/liter, whichever is greater.

(d) The VOC content of contact adhesives not to exceed 55% by 

weight or 480 grams/liter, whichever is greater.

(2) GS-36

a) Construction Adhesives: VOC content not to exceed 7% by 

weight or 75 grams/liter, whichever is greater. 

b) The VOC content of reactive sealants (i.e., silicones, 

polyurethanes, and hybrids, such as MS Polymer and silylated 

polyurethane resin or SPUR) not to exceed 4% by weight or 50 

grams/liter, whichever is greater.

(2) GS-36

901.10 Cabinets. A minimum of 85% of kitchen and bath vanity 

cabinets are in accordance with one of the following: (Where more 

than one of the following practices is used, the practice with 

the fewer number of points is awarded)

(1) Kitchen and bath vanity cabinets in accordance with KCMA 

ESP 01, or equivalent, are installed.

901.9.2 Interior Low-VOC Adhesives and Sealants. For interior low 

VOC adhesives and sealants, a minimum of 85% of site-applied 

products used within the interior of the building are in accordance 

with one of the following, as applicable:

1) CDPH 01350, as certified by a third party program, such as 

Scientific Certification Systems (SCS) Indoor Advantage Gold 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program.

901.11 Insulation is in accordance with the following: 

(1) Formaldehyde emissions of wall, ceiling, and floor insulation 

materials are in accordance with the emissions levels of CDPH 

01350, as certified by a third-party program, such as the 

GREENGUARD Environmental Institute's Children and Schools 

Certification Program or theScientific Certifications Systems (SCS) 

Indoor Advantage Gold Program.

(2) Formaldehyde emissions of duct insulation materials are in 

accordance with the emissions levels of CDPH 01350, as certified 

by a third-party program, such as the GREENGUARD 

Environmental Institute's Children and Schools Certification 

Program or the Scientific Certifications Systems (SCS) Indoor 

Advantage Gold Program.

(2) Kitchen and bath vanity cabinets in accordance with CARB 

Composite Wood Air Toxic Contaminant Measure Standard are 

installed. 

(3) Kitchen and bath vanity cabinets are installed that contain no 

added urea formaldehyde or are in accordance with 

GGPS.EC.010.R0, ASTM D6670, or equivalent. 

Renovation Note: Additional Points for Section 901.10 apply to 

renovations that replace all existing kitchen and bath vanity 

cabinets. 

901.12 A carbon monoxide (CO) alarm is installed in a central 

location outside of each separate sleeping area in the immediate 

vicinity of the bedrooms. The CO alarm(s) is located in accordance 

with NFPA 720 and is hard-wired with a battery back-up. The alarm 

device(s) is certified by a third party for conformance with either 

CSA 6.19 or UL 2034.

901.13 Building entrance pollutants control. Pollutants are 

controlled at all main building entrances by one of the following 

methods: 

(1) Exterior grilles or mats are installed in a fixed manner and may 

be removable for cleaning. 

(2) Interior grilles or mats are installed in a fixed manner and may 

be removable for cleaning. 

901.14 Non-smoking areas. All interior common areas of a multiunit building are designated as non-smoking areas with posted 

signage.

902 Pollutant Control

902.0 Intent. Pollutants generated in the building are controlled. 

902.1.1 Spot ventilation is in accordance with the following:

901.15 Renovation Note: For buildings constructed prior to 1978, 

lead-safe work practices are used during renovation, remodeling, 

painting, and demolition.

(1) Bathrooms (including powder rooms) are vented to the 

outdoors. The minimum ventilation rate is 50 cfm for intermittent 

operation or 20 cfm for continuous operation in bathrooms. 

(2) Clothes dryers are vented to the outdoors. 
234 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

8

8 215 See also 904.2

Mandatory 

Mandatory 

2 Add'l Pts

3 Add'l Points

1 Add'l Pts

9 Points Max

5 5 42

2 n/a

8

8 149 2 field personnel 2 hours.

Max. 6 

Points

2

3

6 41 Note: Kitchen fan upgrade to 100 CFM in 

902.1(3) would cover estar there, as well.

8

10

10 345

15

17

0 Add'l Pts

1 Add'l Pts

2 Add'l Pts

8

3

3 0

0 Add'l Pts

1 Add'l Pts

Mandatory

10

15

10

3

0 Add'l Pts

3

(3) Kitchen exhaust units and/or range hoods are ducted to the 

outdoors and have a minimum ventilation rate of 100 cfm for 

intermittent operation or 25 cfm for continuous operation. 

1) for first device

902.1.2 Bathroom and/or laundry exhaust fan is provided with an 

automatic timer and/or humidistat: 

Addition Note: Section 902.1 applies only to additions that include 

a kitchen or bathroom. 

Renovation Note: Section 902.1 applies to renovations that 

include a new or existing kitchen or bathroom. (Points 

available for all of the following conditions)

1) Existing non-vented kitchen range or bathroom exhaust systems 

in an area that is undergoing renovation are replaced with 

equipment that is in accordance with Section 902.1.

2) Existing non-vented kitchen range or bathroom exhaust systems 

in an area that is not undergoing renovation are replaced with 

equipment that is in accordance with Section 902.1.

3) New kitchen range or bathroom exhaust systems in accordance 

with Section 902.1 are installed where no exhaust system existed 

before renovation.

(1) Exhaust or supply fan(s) ready for continuous operation and 

with appropriately labeled controls.

(2) Balanced exhaust and supply fans with supply intakes located 

in accordance with the manufacturer's guidelines to not introduce 

polluted air back into the building. 

2) for each additional device

902.1.4 Exhaust fans are ENERGY STAR as applicable. 

902.1.3 Kitchen range, bathroom, and laundry exhaust are verified 

to specification. Ventilation airflow at the point of exhaust is tested 

to a minimum of 100 cfm intermittent or 25 cfm continuous for 

kitchens, and 50 cfm intermittent or 20 cfm continuous 

(1) ENERGY STAR, or equivalent, fans (Points awarded per fan) 

(2) ENERGY STAR, or equivalent, fans operating at or below 1 

sone (Points awarded per fan)

902.2. Building ventilation systems. 

902.2.1 One of the following whole building ventilation systems is 

implemented and is in accordance with the specifications of 

Appendix B. (Points must be claimed in 902.2.1 to claim points 

in 902.2.2.

(3) Heat-recovery ventilator.

(4) Energy-recovery ventilator.

902.2.2 Ventilation airflow is tested to achieve the design fan airflow 

at point of exhaust in accordance with Appendix B. (Points must 

be claimed in 902.2.1 to claim points in 902.2.2) 

902.2.3 MERV filters 8 or greater are installed on central air 

systems. Designer or installer is to verify that the HVAC equipment 

is able to accommodate the greater pressure drop of MERV 8 

filters. 

2) If the pressure and thermal boundaries of the addition are not 

separated from the existing building, Section 902.2.1 is applied to 

the whole building.

Renovation Note: Section 902.2.1 applies to the whole building for 

connected thermal and pressure boundaries.

Addition Note: Section 902.2.1 is applied to an addition in 

accordance with one of the following:

1) The pressure and thermal boundaries of the addition are 

separated from the existing building.

(b) An active radon system is installed.

902.3(2) Buildings located in Zone 2. 

(a) A passive radon system is installed. 

Addition Note: Section 902.2.3 applies only to additions that 

include a new HVAC system.

902.3 Radon control. Radon control measures are in accordance 

with ICC IRC Appendix F. (Zones are defined in Figure 9(1). 

902.3(1) Buildings located in Radon Zone 1 have a radon system 

installed.

(a) A passive radon system is installed. 

Renovation Note: Section 902.2.3 applies only to renovations that 

replace an existing HVAC system.

902.4 HVAC system protection. One of the following HVAC system 

protection measures is performed: 

(1) HVAC supply registers (boots), return grilles, and rough-ins are 

covered during construction activities to prevent dust and other 

pollutants from entering the system. 

(2) Prior to owner occupancy, HVAC supply registers (boots), 

return grilles, and duct terminations are inspected and vacuumed. 

In addition, the coils are inspected and cleaned and the filter is 

replaced if necessary. 

Addition and Renovation Note: Section 902.4(1) does not apply 

to additions and renovations except as noted in Addition and 

Renovation Note (3) below.
APPENDIX B 235

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

1 Add'l Pt

1 Add'l Pt

1 Add'l Pt

5

2

2 2

2 2

2 2

Mandatory

0

Mandatory

3

Mandatory 

0 Add'l Pts

6

Mandatory

1 Add'l Pt

2 Add'l Pts

10

8

1 Add'l Pt

2 Add'l Pts

2 Points 

2

Mandatory 

2 Points

2 Include site superintendent's provision to test 

and record moisture in wall cavity prior to 

hanging drywall.

4

4 0 Include in site superintendent's 

responsibilities

2

2 0 Include in the installers scope.

a. In areas with free-draining soils, identified as Group 1 in the ICC 

IRC by a certified hydrologist, soil scientist, or engineer through a 

site visit, a gravel bed or geotextile matting is not required.

Modification for 1&2:

903.0 Intent. Moisture and moisture effects are controlled. 

903.1 Tile backing materials installed under tiled surfaces in wet 

areas are in accordance with ASTM C1178, C1278, C1288, or 

C1325. 

2) A minimum 4-inch thick uniform layer of sand, overlain with a 

layer or strips of geotextile drainage matting, covered with 

polyethylene sheeting, with the sheeting joints lapped according to 

Section 903.3.

(a) Attic/ceiling

903.2.1 A capillary break and vapor retarder are installed at all 

concrete slabs in accordance to the following:

1) A minimum 4-inch thick bed of 1⁄2 inch diameter or greater clean 

aggregate, covered with polyethylene or polystyrene sheeting in 

direct contact with the concrete slab, with the sheeting joints 

lapped in accordance with Section 903.3. (or)

903.2 Capillary breaks

903 Moisture Management: Vapor, Rainwater, Plumbing, HVAC

3) The building or dwelling unit is not occupied during the entire 

construction period and Sections 902.4(1) and 902.4(2) are 

implemented.

902.6 Living space contaminants. The living space is sealed to 

prevent unwanted contaminants.

(1) Attic access, knee wall door, or drop down stair is caulked, 

gasketed, or otherwise sealed. 

(2) All penetrations (e.g., top plates, HVAC register boots, recessed 

can lights, are sealed in the following areas:

d) hazardous waste removal

e) name and age of occupants of the building or dwelling unit at a 

specific time

(b) Wall

(c) Floors

2) The addition or renovation area is sealed off from the occupied 

portion of the building or dwelling unit. The same HVAC system for 

conditioning the air in renovated and occupied space is not used. 

1) During construction, a construction indoor air quality (IAQ) 

schedule is developed that includes, at a minimum, all of the 

following: 

a) type of construction activity

b) ability to occupy the building or dwelling unit

c) IAQ protections for occupant(s) of the building or dwelling unit

b. In Dry climate locations, as defined by Figure 6(1), polyethylene 

sheeting is not required unless required for radon resistance 

(Section 902.3).

903.2.2 Add a capillary break on footing to prevent moisture 

migration into foundation wall. 

903.3.1(1) Minimum 6-mil vapor retarder installed on the crawl 

space floor and extended up the wall sufficient to allow the material 

to be affixed with glue and furring strips. Joints of vapor retarder 

overlap a minimum of 6 inches and are taped.

2) Additional points available for installing a footing drainage 

system.

1) Additional points available for damp proofing below grade walls.

Renovation Note: Additional Points:

Addition Note: Section 903.2 applies only to the new construction 

portion of additions.

Renovation Note: Section 903.2 applies only to renovations that 

include slab removal and/or replacement.

903.3 Crawlspaces

903.4.1(3) The moisture content of lumber is sampled to ensure it 

does not exceed 19 % prior to the surface and/or wall cavity 

enclosure. 

903.3.1(2) Damp-proof walls are provided below finished grade. 

Joints of vapor retarder overlap a minimum of 6 inches and are 

taped.

903.4.2 Moisture content of subfloor, substrate, or concrete slabs 

is in accordance with the appropriate industry standard for the finish 

flooring to be applied. 

(2) 6-mil polyethylene sheeting, lapped a minimum of 6 inches and 

taped at the seams. 

903.4 Moisture control measures. 

903.4.1(1) Building materials with visible mold are not installed or 

are cleaned or encapsulated prior to concealment and closing.

Addition Note: Section 903.3.2 applies only to the new 

construction portion of additions.

Renovation Note: Section 903.3.2 applies only to renovations that 

include a focused effort to convert an existing vented crawl space 

into an unvented, conditioned crawl space.

903.3.2 Crawlspace that is built as a conditioned area is sealed to 

prevent outside air infiltration and provided with conditioned air at a 

rate not less than 0.02 cfm per square foot of horizontal area and 

one of the following is implemented:

(1) A concrete slab over lapped 6 mil polyethylene or polystyrene

903.4.1(2) Walls are not enclosed (e.g. with drywall) if the 

insulation has a high moisture content. Wet insulation products are 

dry before enclosing. 

902.5 Central vacuum systems. Central vacuum system is installed 

and vented to the outside.

Addition and Renovation Note: As an alternative to Section 

902.4(2), one of the following options is implemented: 
236 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

2 Add'l Pts

2

Plumbing lines are in unconditioned attic, but 

not exterior walls. Insulate attic lines.

Mandatory 

Mandatory

3 Add'l 

Points

2 Add'l Pts

2

2 See 903.5.1. 

1 Add'l Pt

2 Add'l Pts

5 5 0 Install tankless in bathroom.

2 Add'l Pts

Mandatory

2

2

Mandatory

2 Add'l Pts

2 Add'l Pts

3 Add'l 

Points

8 Points 

8 374

2

2 72

2

2 400 See 902.2.1(2) for make up air.

Mandatory 

1 

2

Base Pts.

0 0 9 950 6 94 0 0 0 0 Ch. 10 Subtotal 

1 point per 2 

items

0 100 Estimated 40 hours staff. O/H removed for 

separate reporting as one time cost. This 

reflects staff time to assemble.

Mandatory

0.5 850

Mandatory

0.5 Included with 1001.1

4) lead or other toxic solders

Renovation Note: The entire plumbing system between the 

connections of the water distribution and/or waste lines and the 

equipment and fixtures is replaced. This item applies if one or more 

of the following conditions exist: 

1) poor joint connections

2) thin pipe walls

3) severely reduced water flow caused by debris buildup

Renovation Note: The entire plumbing system between the 

connections of the water distribution and/or waste lines and the 

equipment and fixtures is replaced. This item applies if one or more 

of the following is implemented: 

1) Plumbing in unconditioned spaces is repaired or replaced.

903.5.3 Plumbing is not installed in unconditioned spaces.

5) drain, waste, and vent system is not in accordance with the ICC 

IPC.

Addition Note: Section 903.6 applies only to the new construction 

portion of additions.

Renovation Note: Section 903.6 applies to renovations as follows: 

903.6(1) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated to 

a minimum of R-6. Outdoor air supplies to ventilation systems are 

insulated to a minimum of R-6.

903.6(2) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated to 

a minimum of R-8. Outdoor air supplies to ventilation systems are 

insulated to a minimum of R-8.

1001.1 A homeowner’s binder is provided that includes the 

following, as available and applicable:

2) Plumbing in unconditioned spaces is improved.

903.5 Plumbing. 

903.5.1 Plumbing distribution lines are not installed in exterior wall 

cavities.

903.5.2 Cold water pipes in unconditioned spaces are insulated to a 

minimum of R-4 with pipe insulation or other covering that 

adequately prevents condensation.

Addition Note: Section 903.5.1 applies only to the new 

construction portion of additions.

Renovation Note: Section 903.5.1 applies only to renovations that 

include exterior walls and plumbing lines or plumbing lines in 

unconditioned spaces.

1) A minimum of 50 percent of exterior wall piping is removed.

2) A minimum of 50 percent of exterior wall piping is insulated.

(1) A green building program certificate or completion document.

(2) List of green building features (can include the national green 

building checklist).

1001.0 Intent. Information on the building’s use, maintenance and 

green components is provided. 

1) areas that include replacement or disturbance of HVAC ducts, 

plenums and trunk

2) in areas with specific condensation problems, remove any 

contaminated ductwork, remove or remediate mold-contaminated 

elements, and correct existing or add new insulation.

903.7 Relative Humidity. In climate zones 1A, 2A, 3A, 4A, and 5A 

as defined by Figure 6(1), equipment is installed to maintain relative 

humidity (RH) at or below 60% using one of the following: 

903.9.1 In “Warm-Humid” climates as defined by Figure 6(1) 

equipment is installed to maintain Relative Humidity (RH) at or 

below 60% using one of the following:

3) insulation on the existing HVAC ducts, plenums and trunks is 

upgraded

(1) Additional dehumidification system(s)

(2) Central HVAC system equipped with additional controls to 

operate in dehumidification mode.

904.3 Renovation Note: Existing unsealed combustion gas dryer 

vents related to renovations.

2) Existing unsealed combustion gas dryer vent is replaced with a 

sealed exhaust vent and ducted makeup air is provided.

1) Existing unsealed combustion gas dryer vent is replaced with a 

sealed exhaust vent.

904 Innovative Practices

904.1 A humidity monitoring system is installed with a mobile base 

unit that displays a reading of temperature and relative humidity at 

the base unit with a minimum of two remote units. One remote unit 

that is placed permanently inside the conditioned space in a central 

location, excluding attachment to exterior walls, and another remote 

unit is placed permanently outside of the conditioned space.

904.2 Kitchen exhaust unit(s) that equal or exceeds 400 cfm, and 

make-up air is provided.

Addition and Renovation Note: Section 903.4.1 (1) and (2) 

applies to new, reused, and salvaged materials only. It excludes 

undisturbed existing materials.

Addition Note: Section 903.4.2 applies only where new finish 

flooring is applied.

Renovation Note: Section 903.4.2 applies only where new finish 

flooring is applied. Additional points available only for correcting 

excess moisture levels in an existing subfloor and/or substrate.

Stand alone unit with hard drain. Cost should 

cover a dehumidification controller and multispeed blower for central unit that is rightsized.

CHAPTER 10: OPERATION, MAINT., AND BUILDING OWNER 

EDUCATION

Building Owners’ Manual for One- and Two-Family Dwellings

(Points awarded for mandatory and non-mandatory items)
APPENDIX B 237

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

Mandatory

on Building Operation And Maintenance for 

6

6 94 Walk thru orientation should take about 2 

hours and be standard.

(1) HVAC filters.

(2) Thermostat operation and programming.

(3) Lighting controls.

(4) Appliances and settings.

(5) Water heater settings.

(6) Fan controls.

1003 Construction, Operation and 

Maintenance Manuals and Training for MultiUnit Buildings

1

Mandatory

Mandatory

Mandatory

(4) Record drawings of the building.

0

1

(2) a minimum of six of the non-mandatory items listed in Section 

1001.1

(20) A narrative detailing the importance of maintenance and 

operation in retaining the attributes of a green-built building.

Renovations Note: A building owners’ manual that includes the 

following:

(1) all mandatory items listed in Section 1001.1

(8) Local public transportation options (if applicable).

(9) A diagram showing the location of safety valves and controls for 

major building systems.

(3) Product manufacturer’s manuals or product data sheet for 

installed major equipment, fixtures and appliances. If product data 

sheet is in the binder, manufacturer’s manual shall may be 

attached to appliance in lieu of inclusion in the binder. 

(4) Information on local recycling programs.

(5) Information about available local utility programs that purchase 

a portion of energy from renewable energy providers. 

(12) A photo record of framing with utilities installed. Photos taken 

prior to installing insulation, clearly labeled, and included as part of 

the homeowner’s binder.

(6) Explanation of the benefits of using energy efficient lighting 

systems (e.g., compact fluorescent light bulbs, light emitting diode 

(LED)) in high usage areas.

(7) A list of practices to conserve water and energy.

(10) Where frost protected shallow foundations are used, notify 

owner of precautions, including instructions not to remove or 

damage insulation when modifying landscaping, to provide heat to 

the home as required by the IRC/IBC, and to keep base materials 

(11) A list of local service providers that offer regularly scheduled 

service and maintenance contracts to assure proper performance of 

equipment and the structure (e.g., HVAC, water heating 

equipment, sealants, caulks, gutter and downspout system, showe

(17) Information about methods of maintaining the building’s 

relative humidity in the range of 30-60%.

(18) Instructions for inspecting the building for termite infestation.

(19) Instructions for maintaining gutters and downspouts and 

importance of diverting water at least five feet away from 

foundation.

(6) A diagram showing the location of safety valves and controls for

major building systems.

(7) A list of the type and wattage of light bulbs installed in light

fixtures.

Addition and Renovation Note : A building construction manual 

that includes the following:

(13) Maintenance checklist.

1002.1 Training of building owners. Building owners/occupants are

familiarized with the green building goals and strategies

implemented and the impacts of the occupants’ practices on the

costs of operating the building. Training is provided to the

responsible party(ies) regarding all equipment operation and control

systems. Systems include, but are not limited to, the following:

(14) List of common hazardous materials often used around the 

building and instructions for proper handling and disposal of these 

materials.

(15) Information about organic pest control, fertilizers, de-icers, and 

cleaning products.

(16) Information about native landscape materials and/or those that 

have low-water requirements.

(1)A narrative detailing the importance of constructing a green 

building, including a list of green building attributes included in the 

building. This narrative is included in all responsible parties’ 

manuals.

(2) A local green building program certificate as well as a copy of

the National Green Building Standard TM , as adopted by the

Adopting Entity, and the individual measures achieved by the

building.

(3)Warranty, operation, and maintenance instructions for all

equipment, fixtures, appliances, and finishes.

(5) A record drawing of the site including stormwater management

plans, utility lines, landscaping with common name and

genus/species of plantings.

a minimum of two of the non-mandatory items listed in Section 

1003.1

1003.2 Operations manual. Operations manuals are created and

distributed to the responsible parties in accordance with Section

1003.0. Between all of the operation manuals, five or more of the

following options are included.

all mandatory items listed in Section 1003.1

1003.0 Intent. Manuals are provided to the responsible parties 

(owner, management, tenant, and/or maintenance team) regarding 

the construction, operation, and maintenance of the building. Paper 

or digital format manuals are to include information regarding those 

aspects of the building’s construction, maintenance, and operation 

that are within the area of responsibilities of the respective recipient. 

One or more responsible parties are to receive a copy of all 

documentation for archival purposes.

1003.1 Building construction manual. A building construction

manual, including five or more of the following, is compiled and

distributed in accordance with Section 1003.0.

(Points awarded per two items. Points awarded for both 

mandatory and non-mandatory items.)

(8) A photo record of framing with utilities installed. Photos are

taken prior to installing insulation and clearly labeled.

(3) the EPA publications “Reducing Lead Hazards When 

Remodeling Your Home” and “Asbestos in Your Home: A 

Homeowner’s Guide”
238 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

172 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

Mandatory

Mandatory

(6) Local public transportation options.

0

1

Mandatory

a) HVAC filters

c) ighting controls

d) appliances and settings

e) water heater settings

f) fan controls

0

1004

INNOVATIVE PRACTICES

(10) A procedure for educating tenants in rental properties on the

proper use, benefits, and maintenance of green building systems

including a maintenance staff notification process for improperly

functioning equipment.

Addition and Renovation Note: An operations manual that 

includes the following:

all mandatory items listed in Section 1003.2

a minimum of three of the non-mandatory items listed in Section 

1003.2

all mandatory items listed in Section 1003.3.

a minimum of three of the non-mandatory items listed in Section 

1003.3.

(8) A procedure for rental tenant occupancy turnover that preserves 

the green features.

(4) List of common hazardous materials often used around the

building and instructions for proper handling and disposal of these

materials.

(9) An outline of a formal green building training program for 

maintenance staff. Addition and Renovation Note : A maintenance manual that 

includes the following:

1003.3 Maintenance manual. Maintenance manuals are created

and distributed to the responsible parties in accordance with

Section 1003.0. Between all of the maintenance manuals, five or

more of the following options are included.

(Points awarded per two items. Points awarded for both 

mandatory and non-mandatory items.)

(5) Information on local and on-site recycling and hazardous waste

disposal programs and, if applicable, building recycling and

hazardous waste handling and disposal procedures.

(7) Explanation of the benefits of using compact fluorescent light

bulbs, LEDs, or other high-efficiency lighting.

(8) Information on native landscape materials and/or those that

have low water requirements.

(9) Information on the radon mitigation system, where applicable.

b) thermostat operation and programming

(6) Instructions for maintaining gutters and downspouts and the 

importance of diverting water a minimum of 5 feet away from (7) Instructions for inspecting the building for termite infestation.

(1) A narrative detailing the importance of operating and living in a

green building. This narrative is included in all responsible parties’

manuals.

(4) Information on opportunities to purchase renewable energy from

local utilities or national green power providers and information on

utility and tax incentives for the installation of on-site renewable

energy systems.

(2)(A list of practices to conserve water and energy (e.g., turning off

lights when not in use, switching the rotation of ceiling fans in

changing seasons, purchasing ENERGY STAR appliances and

electronics).

(3) Information on methods of maintaining the building’s relative

humidity in the range of 30 percent to 60 percent.

(5) Information on organic pest control, fertilizers, deicers, and

cleaning products.

(1) A narrative detailing the importance of maintaining a green

building. This narrative is included in all responsible parties’

manuals.

(2) A list of local service providers that offer regularly scheduled

service and maintenance contracts to ensure proper performance of

equipment and the structure (e.g., HVAC, water-heating

equipment, sealants, caulks, gutter and downspout system, shower 

(3) User-friendly maintenance checklist that includes:

1004.1 (Reserved)
APPENDIX B 239

APPENDIX B 

GREEN SCORING & COST

B. Bayou LaBatre, Alabama
240 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Building Comparison Alabama Cottage - Palm Harbor in Bayou LaBatre

Bayou Labatre, Alabama - AMT2356A

ANSI-ICC-700-2008 National Green Building StandardTM

Lot 60 x 120' 7,200 0.16528926 Silver Gold Emerald

House 30 x 35' 970 Required Actual Required Actual Required Actual Required Actual KEY

5. Lot Design... 39 53 66 72 93 94 119 121 Points are Co-Dependant on at

6. Resource Efficiency 45 76 79 87 113 114 146 154 least one other cell

7. Energy Efficiency 30 55 60 100 100 152 120 181 Overhead Cost - Dependant on

8. Water Efficiency 14 14 26 37 41 55 60 72 subdivision size

9. Indoor Env. Quality 36 74 65 99 100 135 140 157

10. Operation, Maintenance... 8 9 10 15 11 15 12 15

Additional Points 50 100 100 100

Total 222 281 406 410 558 565 697 700

Overage 59 4 7 3

6 Points Cost Points Cost Points Cost Points Cost

Chapter 5 53 417 72 1,103 94 2,173 121 5,643

Chapter 6 76 0 87 0 114 1,337 154 5,675

1,278 Chapter 7 55 1,095 100 3,990 152 8,615 181 12,858

Chapter 8 14 114 37 461 55 811 72 1,345

Chapter 9 74 0 99 207 135 856 157 2,687

Chapter 10 9 950 15 1,044 15 1,044 15 1,044

Total 281 2,576 410 6,805 565 14,836 700 29,251

2.66 7.01 15.29 30.15

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

Cost/Point 0 13 36 49 129

Rating 21 0 32 417 19 686 22 1,070 27 3,470 Ch. 5 Subtotal Base

13 36 49 129

4

5

5

3

3

3

4

4 754 Minimum 2 person team for 1 day. Varies 

with size of operations.

Lot Design

5

6

4

4

4 627 Mandatory in some states. Overhead cost of 

training a superintendent in a program like 

MD's Green Card . 8 hrs. plus $250 

2

3

3 117 Approx. 3000 sf disturbed area reseeded, 2 

times.

1 Additional 

Point

(a) Less than 25% 2

(b) 25 to 75% 3

(c) Greater than 75% 4

5

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

6

4

Cummulative

Emerald

Addition and Renovation Note: section 503.1 applies to additions that 

increase building footprint on the lot; and to renovations that include 

landscape, hardscape, and outdoor living area. (Additional points 

awarded for each strategy implemented.)

(3) All or a percentage of roads and parking are aligned with natural 

topography to reduce cut and fill.

(2) Hydrological/soil stability study for steep slopes is completed and 

used to guide the design of all buildings on the site.

503.2 Slope disturbance is minimized by one or more of the 

following: (Points awarded only if there are developable steep 

slopes on the lot.)

(1) All or a percentage of development on steep slopes is avoided.

(6) Ongoing maintenance of vegetation during construction is in 

accordance with TCIA A300.

(1) A natural resources inventory is completed under the direction of 

a qualified professional. 

(2) A plan is implemented to conserve the elements identified by the 

resource inventory as high priority resources. 

(3) Items listed for protection in the resource inventory plan are 

protected under the direction of a qualified professional. 

(4) Basic training in tree or other natural resource protection is 

provided for onsite supervisor.

(5) All tree pruning on site is conducted by a Certified Arborist.

(3) A lot is selected within one-half mile of six or more community 

resources (e.g., recreational facilities (such as pools, tennis courts, 

basketball courts), parks, grocery store, post office, place of worship, 

community center, daycare center, bank, school, restaurant, 

medical/dental office, laundromat/dry cleaner.) 

502.1 A knowledgeable team is established and team member roles 

are identified with respect to green lot design, preparation, and 

development. The project’s green goals and objectives are written into 

a mission statement. 

503.0 Intent. The lot is designed to avoid detrimental environmental 

impacts first, minimize any unavoidable impacts, and mitigate for 

those impacts that do occur. The project is designed to minimize 

environmental impacts and to protect, restore, and enhance the 

natural features and environmental quality of the lot. (To be 

awarded points allocated for design, the intent of the design 

shall be implemented.) 

503.1 Natural resources are conserved by one or more of the 

following:

502 Project Team, Mission Statement, and Goals

(2) A greyfield lot or an EPA-recognized brownfield lot is selected.

501.2 Mass Transportation. A range of mass transportation choices 

are promoted by one or more of the following:

(1) A lot is selected within one-half mile of pedestrian access to a 

mass transit system or within five miles of a mass transit station with 

provisions for parking.

(2) Walkways, street crossings, and entrances designed to promote 

pedestrian activity are provided. New buildings are connected to 

existing sidewalks and areas of development.

(3) Addition and Renovation Note: A renovation or addition project is 

implemented. (Points awarded for using an existing building and 

infrastructure.)

CH. 5 LOT DESIGN, PREPARATION, AND DEVELOPMENT

500.0 Intent. This section applies to lot development for the eventual 

construction of residential buildings, multi-unit buildings, or additions 

thereto that contain dwelling units. The buildings on the lot earn their 

own performance level by complying with the provisions of Sections 

303, 304, or 305.5, as applicable.

501.1 The lot is selected to minimize environmental impact by one or 

more of the following:

(1) An infill lot is selected.

ANSI National Green Building StandardTM Baseline Bronze Silver Gold

Bronze

Cost per SF ($)

(4) Long-term erosion effects are reduced through the design and 

implementation of terracing, retaining walls, landscaping, and 

restabilization techniques.

(5) Underground parking uses the natural slope for parking entrances.

Page 1 of 25
APPENDIX B 241

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2 Additional 

Points

5

5 0 Stockpile lumber in costruction 

entrance/driveway. Captured reseeding in 

503.1(6)

5

5 0 Coordinate with sewer and water and utilities. 

Bring in under driveways.

5

5 0 Site plan should include these.

6

6 0 Implement with 503.4(2).

6

6 754 Minimum 2 person team for 1 day. Varies 

with size of operations.

Less than 15% impervious structure/driveway 

to land

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

(4) A minimum of 75% of the roof is vegetated 

(green roof) 3

1 Additional 

Point

5

5 520 Simple implementation on lot. Allowed 1/2 

day for professional to develop plan that 

includes noted actions. Include 503.5(8) and 

503.6 in plan. Plan needed for 801.7.4 points.

4

4 1,116 See 503.5(1) for plan cost. Cost of 3 shrubs, 

2 trees and hydroseed. Based on 7,200 sf lot - 

no site plan provided.

(a) Lot is 0% turf 4

(b) Greater than 0% to less than 25% 3

(c) 25% to less than 50% 2 28% mulched.

(d) 50% to 75% 1

5

5 535 See 503.5(1) for plan cost. 3 trees and 5 

shrubs. 

5

5 0 See 503.5(1) for plan cost. Plant 3 trees from 

503.5(2) to provide shade. See 505.2(1)

4

4 360 See 503.5(1) for plan cost. Add 3 trees.

3

3 0

4

4 0 See 503.5(1)

2 Additional 

Points

4

4 175 See 503.5(1). Include additional 5 shrubs.

(1) Maintain wildlife habitat.

1 Addt'l Point

(2) Expand wildlife habitat.

2 Addt'l Points

6 Not possible with this development

3 3

3

4

7

10

504 Lot Construction

4

4 0 Standard.

3

3 166

4

4 0

503.9 Density. The average density on a net developable area basis 

is: 

(2) 14 to less than 21 dwelling units per acre

(2) Trenching, significant changes in grade, and compaction of soil 

and critical root zones in “tree save” areas are avoided.

504.0 Intent. Environmental impact during construction is avoided to 

the extent possible; impacts that do occur are minimized, and any 

significant impacts are mitigated.

504.1 Onsite supervision and coordination is provided during 

clearing, grading, trenching, paving, and installation of utilities to 

ensure that specified green development practices are implemented 

(Also see Section 503.3.)

504.2 Trees and vegetation. Designated trees and vegetation are 

preserved by one or more of the following:

(1) Fencing or equivalent to protect trees and other vegetation is 

installed.

(4) Plants with similar watering needs are grouped (hydrozoning).

(5) Species and locations for tree planting are identified that will 

provide summer shading of streets, parking areas, and buildings to 

moderate temperatures. 

(6) Vegetative wind breaks or channels are designed as appropriate 

for local conditions.

(1) 7 to less than 14 dwelling units per acre (4047 m2

)

Addition and Renovation Note: Section 503.6 applies to additions 

that increase building footprint on the lot; and to renovations that 

include landscape, hardscape, and outdoor living area. The existing 

landscape is either maintained to preserve a wildli

503.8 Environmentally Sensitive Areas.

(2) Compromised Environmentally Sensitive Areas are mitigated or 

restored.

(8) An integrated pest management plan to minimize chemical use in 

pesticides and fertilizers is developed.

503.5 Landscape plan is developed to limit water and energy use 

while preserving or enhancing the natural environment. 

(1) A plan is formulated to restore or enhance natural vegetation that 

is cleared during construction. Landscaping is phased to coincide 

with achievement of final grades to ensure denuded areas are quickly 

vegetated.

(2) Turf grass species, other vegetation, and trees are selected that 

are native or regionally appropriate for local growing conditions.

(3) 21 or greater dwelling units per acre

Addition and Renovation Note: Section 503.5 applies to additions 

that address protection and renovation of existing vegetation during 

and after construction and the preservation or enhancement of the 

natural environment. 

(3) A percentage or all turf areas are limited. 

(7) Onsite tree trimmings or stump grinding of regionally appropriate 

trees are used to provide protective mulch during construction and 

cleared trees are recycled as saw lumber or pulp wood.

503.6 Wildlife habitat. Measures are planned that will support 

wildlife habitat.

503.7 Mixed use development is incorporated.

(1) Environmentally Sensitive Areas are avoided.

Addition and Renovation Note: Section 503.2 applies to additions 

that increase building footprint on the lot; and to renovations that 

include landscape, hardscape, and outdoor living area. (Additional 

points awarded for each strategy implemented.)

(2) Utilities are installed using one or more alternative means:

(3) Limits of clearing and grading are demarcated on the plan.

503.4 Storm Water Mgmt. Storm water is managed using one or 

more of the following low impact development techniques:

(d) placement of utilities under paved surfaces instead of yards.

(c) shared utility trenches or easements

Addition and Renovation Note: Section 503.4 applies to additions 

that increase the building footprint on the lot; and to renovations that 

include hardscape and outdoor living area. (To be awarded these 

points, the amount of storm water runoff is not to 

503.3 Soil disturbance and erosion are minimized by one or more 

of the following: (Also see Section 504.3) (Points must be taken here 

to claim points in 504.1)

(3) All or a percentage of impervious surfaces are minimized and 

permeable materials are used for driveways, parking areas, walkways, 

and patios.

(a) tunneling instead of trenching

(b) use of smaller (low ground pressure) equipment or geomats to 

spread the weight of construction equipment

(1) Natural water and drainage features are preserved and used.

(2) A storm water management plan is developed and implemented 

that minimizes concentrated flows and simulates flows found in 

natural hydrology, e.g., vegetative swales, French drains, wetlands, 

drywells, and rain gardens.

(1) Construction activities are scheduled to minimize length of time 

that soils are exposed.

Page 2 of 25
242 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

5

5 300 Note: On this size lot this activity would 

typically be included with house stakeout for 

lesser cost.

5

5 Included with 504.3(1)

5

5 Included with 504.3(1)

5

5

3

3

3 See 503.1(6)

3 3 220 Soil ammendment.

5 0 See 504.1(2) and 503.3(2)

2 Additional 

Points

505 INNOVATIVE PRACTICES

4

2 Additional 

Points

4

4 0 See 503.3(5).

Base Pts.

56 0 20 0 11 0 27 1,337 40 4,338 Ch. 6 Subtotal 

Cost/Point 0 0 0 50 108

15 15 967 sf.

12

9

6

Mandatory

1 Addt'l Point

3 Addt'l Point

6 Add'l Points

1 Addt'l Point

3 pts per 

system (9 pts 

max)

9 0

Incorporate: single top plate, stud wall 

spacing @24", roof truss spacing at 24". - 

design cost vs. Material cost should be equal

3 3 1,040

3 3

3 3

3 3

1

4

4 1,040

CHAPTER 6: RESOURCE EFFICIENCY

(1) Less than or equal to 1,000 square feet

(2) Less than or equal to 1,500 square feet

(3) Less than or equal to 2,000 square feet

(4) Less than or equal to 2,500 square feet

(2) Light colored hardscaping: Horizontal hardscaping materials are 

installed with a solar reflectance index of 29 or greater. 

601.1 Conditioned floor area, as defined by ICC IRC calculated in 

accordance with ANSI Z765, is limited. Dwelling unit size is to be 

601 Quality of Construction Materials and Waste

601.0 Intent. Design and construction practices that minimize the 

environmental impact of the building materials are incorporated; 

environmentally efficient building systems and materials are 

incorporated; and waste generated during construction is reduc

505.0 Intent. Innovative lot design, preparation and development 

practices are used to enhance environmental performance. Waivers 

or variances from local development regulations are obtained and 

innovative zoning practices are used to implement such pract

505.1 Driveways or parking areas are shared. Waivers or variances 

from local development regulations are obtained to implement such 

practices as applicable. In a multi-unit project, parking capacity is not 

to exceed the local minimum requirements.

505.2 Heat Island Mitigation. Any combination of the following 

strategies are provided for a minimum of 50% of the horizontal 

surface area of the hardscape:

(1) Shading of hardscaping: Shade from existing or new vegetation is 

provided (within five years) or from trellises. Shade of hardscaping is 

to be measured on the summer solstice at noon.

Addition and Renovation Note: Section 505.1 applies only where 

existing impervious driveway and parking area(s) are reduced. 

(8) Utilities are installed using one or more alternative means such 

as: 

5

tunneling instead of trenching, use of smaller equipment, use of low 

ground pressure equipment, use of geomats, shared utility trenches 

or easements. 

Addition and Renovation Note: Additional points for Section 504.3 

apply only where onsite construction staging and storage areas are 

planned and located to avoid soil and vegetation disturbance in areas 

where no construction occurs. 

(5) Greater than 4,000 square feet (373 m2

)

Multi-Unit Building Note: For a multi-unit building, use a weighted 

average of the individual unit sizes in qualifying for available points. 

601.2 Material Usage. Building-code-compliant structural systems 

or advanced framing techniques that optimize material usage are 

implemented. Points awarded for each system or framing technique 

implemented.

For every 100 square feet over 4,000 sf, one point is to be added 

to Table 303, category 7 for each performance level. 

Addition Note: Additions more than 75% of existing building. 

Section 601.1 does not apply to additions with an area of more than 

75% of the area of the existing building or dwelling unit. 

(3) Sediment and erosion controls are installed and maintained in 

accordance with the storm water pollution prevention plan (SWPPP), 

where required.

(3) Damage to designated existing trees and vegetation is mitigated 

during construction through pruning, root pruning, fertilizing, and 

watering.

504.3 Soil disturbance and erosion. Onsite soil disturbance and 

erosion are minimized by one or more of the following: (also see 

section 503.3)

(1) Limits of clearing and grading are staked out.

(2) “No disturbance” zones are created using fencing or flagging to 

protect vegetation and sensitive areas from construction activity. 

(4) Topsoil is stockpiled and stabilized for later use to establish 

landscape plantings.

(5) Soil compaction from construction equipment is reduced by 

distributing the weight of the equipment over a larger area (laying 

lightweight geogrids, mulch, chipped wood, plywood, OSB, metal 

plates, or other materials capable of weight distribution in the pathway 

of the equipment).

(6) Disturbed areas that are complete or to be left unworked for 

greater than 21 days are stabilized within 14 days using methods as 

recommended by the EPA or in the approved storm water pollution 

prevention plan (SWPPP), where required.

(7) Soil is improved with organic amendments and mulch.

Additions less than or equal to 75% of existing building. Where 

the addition area is less than or equal to 75 percent of the existing 

buidling or dwelling unit area, points are awarded as follows:

(1) The existing structure is 50% to 75% of total building or dwelling 

unit area.

(2) The existing structure is 76% to 99% of total building or dwelling 

unit area.

Renovation Note: When renovations increase the total existing 

building or dwelling unit area by 1 percent or less, points are awarded 

as follows:

(a) The total area of the existing building or dwelling unit is less than 

or equal to 2500 sf.

(a) The total area of the existing building or dwelling unit is greater 

than 2500 sf.

601.3 Building dimensions and layouts are designed to reduce 

material cuts and waste.

(1) When used for at least 80% of floor area

(3) When used for at least 80% of roof area 

(2) When used for at least 80% of wall area

(4) When used for at least 80% of cladding or siding area

(5) When used for at least 80% of penetrations or trim area

601.4 Detailed framing or structural plans, material quantity lists and 

onsite cut lists for framing, structural materials, and sheathing 

materials are provided.

Page 3 of 25
APPENDIX B 243

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(1) Floor system. 4

(2) Wall system. 4

(3) Roof system. 4

13

13

Modular home construction

13

Max 8 

points

(1)first stacked story 4

(2) for each additional story 2

Max 12 

points

5

2

5 Wood aluminum clad windows. Doors get 

painted. 

3

3 CMU wall w/ Pier foundation @ marriage line

4

(1) Adobe

(2) Concrete/Masonry

(3) Logs 

(4) Rammed earth

Maximum 

number of 

points 5 

(1) Installing a porch roof or awning.

(2) Extending the roof overhang.

(3) Recessing the exterior door.

Main entrance door 3 3

Additional covered door assembly 1

4

Inches Rainfall*

Eave Overhang 

(Inches)

Rake Overhang 

(Inches)

Plans show 12" rake and eave overhang. 64" 

rain/year

Less than 20 12 12

21 to 40 12 12

41 to 70 18 12 4 258 Extend overhangs by 6" .

More than 70 24 12

0

1

Mandatory

0

Not applicable

4

0

2 Additional 

Points

3 3

4

4 410

Plans do not indicate gutters and downspouts; 

cost is for 70' gutter and (2) 10' downspouts 4 

extensions and fold back elbows.

1 Add'l Point

Mandatory

0

Mandatory 0 

Add'l Points

2 Add'l Points 

4

 0 Add'l Points

601.5 Pre-cut or pre-assembled components, or panelized or precast 

assemblies are utilized for 90% for the following system or building.

(4) modular construction for the entire building located above grade.

601.6 Stories above grade are stacked, such as in 1 1/2 and 2 story 

or greater structures. The area of the upper story shall be at least 

50% of the area of the story below, based on areas with a minimum 

ceiling height of 7 feet. 

Addition Note: Section 602.6 applies only to additions that increase 

the footprint of the building.

Renovation Note: The additional points for Section 602.6 apply only 

to renovations.

Addition Note: Section 602.7 applies only to the new construction 

portion of additions.

Renovation Note: The additional points for section 602.7 applies only 

to renovations that alter the existing roof.

602.7 Termite barrier. Continuous, physical,foundation termite 

barrier used with or without low toxicity treatment is installed in 

geographical areas that have subterranean termite infestation 

potential determined in accordance with Figure 6(3).

Renovation Note: Section 602.5 applies only to renovations.

Addition Note: Section 602.3.2 applies to the new construction 

portion of additions. 

Renovation Note: Section 602.3.2 applies to renovations that involve 

the demolition/reconfiguration of exterior walls and/or modification of 

the existing foundation drainage system. 

602.6 Finish grade at all sides of building is sloped to provide a 

minimum of 6 inches of fall within 10 feet of the edge of the building. 

Where lot lines, walls, slopes or other physical barriers prohibit 6 

inches of fall within 10 feet, the final grade 

602.3.2 Interior and exterior foundation perimeter drains are installed 

and sloped to discharge to daylight, dry well, or sump pit.

602.4 Drip edge is installed at eaves and gable roof edges.

602.5 A gutter and downspout system with extensions, or splash 

blocks and effective grading, are provided to carry water at least 5 feet 

away from perimeter foundation walls. 

602.3 Foundation Drainage

602.3.1 Where required by the IRC/IBC for habitable and usable 

spaces below grade, exterior drain tile is installed.

Addition Note: Section 602.2 applies to the new construction portion 

of additions. 

Renovation Note: Section 602.2 applies to renovations that alter the 

existing roof.

Table 602.2

Minimum Roof Overhang for One- & Two-Story Buildings

602.2 Roof overhangs, based on inches of rainfall in Table 602.2, are 

provided over at least 90% of exterior walls to protect the building 

envelope.

602.0 Intent. Design and construction practices are implemented 

that enhance the durability of materials and reduce in-service 

maintenance.

602.1 Entries at exterior door assemblies, inclusive of side lights, are 

covered by one of the following methods below to protect the building 

from the effects of precipitation and solar radiation. A projection factor 

of at least 0.375 is provided. Eastern and western facing entries in 

Climate Zones 1, 2, and 3, as determined in accordance with Figure 

6(1), shall have a projection factor of at least 1.0 unless otherwise 

protected from direct solar radiation by other means (e.g. screen wall, 

vegetation).

602 Enhanced Durability and Reduced Maintenance

601.8 Foundations such as frost-protected shallow foundations, pier 

and pad foundations, post foundations and other similar foundation 

types are designed and constructed.

601.9 One or more of the following above grade wall systems that 

provide sufficient structural and thermal characteristics are used for at 

least 75% of the gross exterior wall area of the building: 

(c) Window, skylight, and door assemblies not requiring paint or stain 

on exterior and/or interior surfaces.

(d) Wall coverings or systems not requiring paint or stain or other type 

of finishing application.

601.7 Site applied finishing materials. Building materials or 

assemblies that do not require additional site applied material for 

finishing are utilized. 

(a) Pigmented, stamped, decorative, or final finish concrete or 

masonry.

(1) 90% or more of the installed material or assembly listed below:

(2) 50% to less than 90% of the installed building material or 

assembly listed below:

(b) Trim not requiring paint or stain.

(5) manufactured home construction for the entire building located 

above grade.

Page 4 of 25
244 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1 Add'l Point 

3 Add'l Points

2

4

6

Mandatory

0 Complies. A-01.

Mandatory 0 

Add'l Points

Mandatory 0 

Add'l Points

Mandatory

0

4

(1) Rubberized coating, or

(2) Drainage mat.

0 Additional 

Points

2 Additional 

Points

6

6 0

At plan revision include all flashing 

details. See Ch. 6 for cost.

(2) Roof valleys.

3

3 859 White/reflective composite shingles.

(2) A green (landscaped) roof system.

1 Add'l Point 

3

3 29 Include an under cabinet recycling container.

(2) Compost facility provided on-site. 3 3 72 

 1 (Max 12 

points)

3

4

4 260 This cost is a one-time set up of 4x4x8' bins 

for sorting and reuse/reload can be divided by 

# lots in subdivision if it were known.

Points per Table 

604.1

Material Percentage Recycled Content Per 2 Minor Per 2 Major

25% - 50% 1 2 2 Carpet padding and wood/plastic decking

50% - 75% 2 4 1 0 Stainless steel sink and masonite 

doors.

75% 3 6 6 0 Gypsum board and cellulose insulation. Note: 

specify correct gypsum board.

6

6 989 Estimate is one day for set-up and one 

hour/week for record keeping. Costs of 

removal assumed even for each method. 90 

day cycle time.

Mandatory 2 

Additional 

Points

7

602.10 In areas where there has been a history of ice forming along 

the eaves causing a backup of water, an ice barrier is installed at roof 

eaves and is extended at least 24” inside the exterior wall line of the 

building, in accordance with the IRC/IBC.

602.11 Enhanced foundation waterproofing is installed:

Recycled Content

Addition and Renovation Note: The construction waste 

managment plan includes information on the proper handling and 

disposal of hazardous wastes.

605.2 Onsite recycling measures following applicable regulations and 

codes are implemented, such as the following:

Recycled Construction Waste 

605.0 Intent. Waste generated during construction is recycled. 

Note: All waste classified as hazardous shall be properly handled and 

disposed. (Points not awarded for hazardous waste removal.) 

605.1 A Construction Waste Management Plan is developed, 

implemented, and posted at the jobsite with a goal of recycling or 

salvaging a minimum of 50% (by weight) of construction and landclearing waste.

604.1 Building materials with recycled content are used for at least 

two minor and/or two major components of the building.(NOTE: Does 

not specify PConsumer. Implication is that max. allowable is 4 

materials. 9 points is max. in scoring tool.)

Table 604.1

603.3 Scrap Materials. Facilitation for sorting and reuse of scrap 

building material (e.g. provide a central storage area or dedicated 

bins.)

604 Recycled-Content Building Materials

603.1 Existing buildings and structures are reused, modified or 

deconstructed in lieu of demolition. (One point awarded for every 

200 sq. ft., 18.5m2, of floor area.)

603.2 Reclaimed and/or salvaged materials and components are 

used.Total material and labor cost of salvaged materials shall equal or 

exceed 1% of total construction costs.

602.14 Recycling. Occupant recycling is facilitated by one or more of 

the following methods:

Renovation Note: Section 602.13 applies to renovations that include 

roof replacement.

(1) A built-in collection space in each kitchen and an 

aggregation/pick-up space in a garage, covered outdoor space or 

other area for recycling containers.

603 Reused or Salvaged Materials 

603.0 Intent. Practices that reuse or modify existing structures, 

salvage materials for other uses, or use salvaged materials in 

building’s construction are implemented. 

602.13 Roof Surfaces. A minimum of 90% of roof surfaces are 

constructed of one or both of the following:

(1) Products which meet the requirements of the ENERGY STAR® 

cool roof certification or equivalent.

(4) At roof-to-wall intersection and at roof-to-chimney intersections.

(5) A drip cap is provided above windows and doors that are not 

Flashed or protected by covering per Section 602.1.

602.12 Flashing details are shown on plans and flashing is installed at 

all of the following locations, as applicable:

(1) Around exterior fenestrations, skylights and doors.

(3) Deck/balcony to building intersections.

(2) In areas of moderate to heavy termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, floors, 

concealed roof spaces not acessible for inspection, exterior decks, 

and exterior claddings within the first 3 feet above the top of the 

foundation. 

(3) In areas of very heavy termite infestation probability (as defined by 

Figure 6(3)) for the foundation, all structural walls, floors, concealed 

roof spaces not accessible for inspection, exterior decks, and exterior 

claddings.

602.9 Where required by the IRC/IBC, a water-resistive barrier and/or 

drainage plane system is installed behind exterior veneer and/or 

siding. 

Addition Note: Section 602.9 applies to the new construction portion 

of additions.

Renovation Note: Section 602.9 applies to renovations that include 

exterior veneer and/or siding replacement.

Addition Note: Section 602.11 applies to the new construction 

portion of additions.

Renovation Note: Section 602.11 applies to renovations that involve 

the demolition/reconfiguration of exterior walls, modification of the 

foundation wall, or an effort to improve foundation waterproofing.

602.8 Termite-resistant materials are used as follows: 

(1) In areas of slight to moderate termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, floors, 

concealed roof spaces not accessible for inspection, exterior decks, 

and exterior claddings within the first 2 feet above the top of the 

foundation. 

(1) new non-chemical termite barrier is provided

(2) existing chemical barrier is removed and replaced with a nonchemical barrier

Page 5 of 25
APPENDIX B 245

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

7 0 Include in waste management plan. See 

605.1 Divert 50% of construction waste to 

recycle.

Mandatory 0 

Add'l Points

Max 6

3

3 0 Recycle drywall and copper wire. Net savings 

is anticipated.

1 2 0 Recycle cardboard and wood.

Max 8

(b) engineered wood

(c) bamboo

(d) cotton

(e) cork

(f) straw

3

3 Wood interior trim & LVL

6

5 0 OSB sheathing and cellulose insulation. 

1 

(2 pts max)

(a) AFF American Tree Farm System®

3 350 Specify Masonite doors for FSC certified. 

Estimated added cost of $35/door. And 

kitchen cabinets at no cost.

4

4 369 Specify that front deck/railing is certified 

wood.

6 pts. max.

2 0 Specify that OSB comes from a mill that 

complies.

Max 9 points

3 2x3 wood studs on interior walls

Engineered wood - OSB floor and roof

(3) Roof or floor trusses. 3

10 points max.

2

2 0 Use indigenous stone for driveway base.

2 2 0 6 0 Specify OSB from local mill. Deck lumber, 

steel, and siding locally sourced.

Max 15 points

(1) Per product/system comparison 3

(2) Whole building LCA analysis 15

Max 10 points

Base Pts. 49 0 6 1,095 45 2,895 52 4,625 29 4,243 Ch. 7 Subtotal 

Cost per 

point

0 183 64 89 146 

(c) Forest Stewardship Council (FSC)

606.2(1) Where a minimum of two certified wood-based products are 

used for minor elements of the building, such as all trim, cabinetry, or 

millwork.

Addition Note: Section 701, including mandatory items, applies only 

to the new construction portion of additions.

(g) natural fiber products made from crops (soy or corn-based)

(h) products with the minimum biobased contents of the USDA 7 

CFR Part 2902

606.1(3) For each additional biobased material used for more than 

.5% of the project’s projected building material cost. 

Addition and Renovation Note: All waste classified as hazardous 

waste is properly handled and disposed of. The weight of this 

material is exempted from landfill diversion when Section 605.2 is 

applied to existing buildings.

606 Renewable Materials

(a) Materials are ground or otherwise safely applied onsite as soil 

amendment or fill. At least 50% (by weight) of construction and landclearing waste shall be diverted from landfill.

606.0 Intent. Building materials derived from renewable resources 

are used.

606.1 The following biobased products are used. (Note: 606.1 and 

606.2 denote % of project mat'l cost req'd.)

(a) certified solid wood in accordance with Section 606.2

(b) Other methods approved by the NAHB Research Center (the 

Adopting Entity).

605.3 Recycled Construction materials: Construction materials (e.g., 

wood, cardboard, metals, drywall, plastic, asphalt roofing shingles, or 

concrete) are recycled offsite.

(1) A minimum of two types of materials are recycled.

608 Indigenous Materials

(d) Program for Endorsement of Forest Certification Systems 

(PEFC)

(e) Sustainable Forestry Initiative Program (SFI)

(6) Other product programs mutually recognized by PEFC

(2) Engineered wood or engineered steel products.

606.2(2) Where a minimum of two certified wood-based products are 

used in major elements of the building, such as walls, floors, or roof.

(i) other biobased materials with a minimum of 50 percent biobased 

content (by weight or volume).

606.1(1) At least two types of biobased materials are used, each for 

more than .5% of the project’s projected building material cost. 

Combined 8 pts Max

606.1(2) At least two types of biobased materials are used, each for 

more than 1% of the project’s projected building material cost. 

(1) Lighter, thinner brick with bed depth less than 3 inches, brick 

with coring above 25%, or both.

607 Resource-Efficient Materials

607.1 Products containing fewer materials are used to achieve the 

same end-use requirements as conventional products, including but 

not limited to: (3 points awarded for each material.)

606.2 Wood-based products are certified to the requirements of one 

of the following recognized product programs: 

(b) Canadian Standards Association’s Sustainable Forest 

Management System Standards (CAN/CSA Z809)

3

606.3 Manufacturing Energy. Materials are used for major 

components of the building that are manufactured using a minimum 

of 33% of the primary manufacturing process energy derived from 

renewable sources, combustible waste sources, or renewable energy 

credits (RECs). (2 points awarded per material.)

610.1 Manufacturer's environmental managment system 

concepts. Product manufacturer’s operations and business 

practices include environmental management system concepts and 

the production facility is ISO 14001 certified or equivalent. The 

aggregate value of building products from ISO 14001 certified or 

equivalent production facilities is at least 1% or more of the estimated 

total building materials cost. (1 point awarded for every percent.) 

701.1 Mandatory requirements. The building shall comply with either Section 702 

(Performance Path) or Section 703 (Prescriptive Path). Items listed as “Mandatory” in 

Section 701.4 apply to both the Performance and Prescriptive Paths.

609 Life Cycle Analysis

CHAPTER 7: ENERGY EFFICIENCY

608.1 Indigenous materials are used for major elements of the 

building. 

Renovation Note: Section 701 applies to existing buildings as 

follows:

609.1 A more environmentally preferable product or assembly for an 

application based upon the use of a Life Cycle Assessment (LCA) tool 

compliant with ISO 14044 or other recognized standards that 

compare the environmental impact of building materials, as

610 Innovative Practices

(1) one type of material.

(2) For each additional material.

(2) for each additional recycled material.

Page 6 of 25
246 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Performance path selected.

30 (30)

Performance path selected at all levels.

Mandatory Practices

Mandatory

0 520 4 hrs at professional time. Could be blower 

door testing. Add'l hours alotted Ch.10.

701.4.1 HVAC SYSTEMS

Mandatory

2006 IECC requirement. Complies.

Mandatory 0 

Add'l Points

 2 Add'l 

Points

Mandatory

701.4.2 DUCT SYSTEM

Mandatory

2006 IECC requirement.

Mandatory 0 

Add'l Points

 0 Add'l Points

(a) 25% to less than 50% 1 Add'l Pt 

(b) 50% to less than 75% 2 Add'l Pt 

(c) 75% to less than 100% 3 Add'l Pt 

(d) 100% 4 Add'l Pt 

5 Add'l Pt 

Mandatory All ducts are in the attic.

Mandatory 0 

Add'l Pts

1 Add'l Pt 

2 Add'l Pt 

Mandatory

0 

Mandatory

0 

Mandatory 0 

Add'l Points

 2 Add'l Pts

Mandatory

0 

0 

0 

2 Add'l Pts

Mandatory

Pier. N/A.

2

2

701.4.3.3 WALLS 

(2) Crawlspace. Where insulated, crawlspace wall insulation is 

permanently attached to the walls. Exposed earth in unvented 

crawlspaces is covered with continuous vapor retarder with 

overlapping joints taped or masticed. 

Renovation Note: In accordance with Section 701.4.3.2(2):

(1) existing uninsulated crawlspace is insulated.

(2) exposed earth in existing crawlspace is covered.

701.4.2.2 Building cavities are not used as supply ducts. 

Addition Note: Section 701.4.2.2 is mandatory for new construction 

portion of additions.

Addition and Renovation Note: Section 701.4.3.1(1) is mandatory 

for the new construction portion of additions and renovations.

(2) Shafts (duct shaft, piping shaft/penetrations, flue shaft.) Openings 

to unconditioned space are fully sealed with solid blocking or flashing 

and any remaining gaps are sealed with caulk or foam. Fire-rated 

collars and caulking are installed where re

(a) Insulation is installed to maintain permanent contact with the 

underside of the subfloor decking, enveloping any attached ductwork 

within the thermal envelope without compression or air gaps in the 

insulation. This practice does not apply to ducts or other mechanical 

equipment that are adjacent to the underside of the subfloor.

(1) Floors (Including insulated floors above garages and cantilevered 

floors)

Renovation Note: Existing openings to unconditioned spaces are 

sealed.

Renovation Note: Insulate existing uninsulated floors.

701.3 A review by the Adopting Entity or designated third party shall 

be conducted to verify design and compliance with Chapter 7. 

(1) Insulation shall be installed in accordance with the manufacturer’s 

instructions or local code, as applicable.

701.4.3.2 FLOOR / FOUNDATION / CRAWLSPACE

Addition and Renovation Note: Section 701.4.2.1 applies only to 

the new portions of a duct system, except as follows:

(1) For renovations of existing buildings, the entire duct system, both 

existing and new, is permitted to be sealed with mastic or an aerosol 

spray-applied duct sealant.

(2) For existing duct systems, where the existing duct system is not in 

accordance with Section 701.4.2.1, the overall duct system leakage 

is reduced by using any approved methods in Section 701.4.2.1, or 

aerosol spray applied duct sealant. Additional p

701.4.3 INSULATION and AIR SEALING

(1) the demolition, reconfiguration, or addition of interior walls or a 

modification in the duct system of the building

(2) a focused effort to solve the use of building cavities as supply 

ducts

(e) the entire system is upgraded in accordance with Section 

704.6.2.2

701.1.3 Alternative Bronze Level Compliance. As an alternative, any building that 

qualifies as an ENERGY STAR qualified home or equivalent achieves the Bronze Level 

for Chapter 7.

701.4.2.1 Ducts are sealed with tape complying with UL 181, 

mastic, gaskets, or an approved system as required by the ICC IRC 

(Section M1601.3.1, or ICC IMC Section 603.9) to reduce leakage.

Renovation Note: Section 701.4.2.2 applies to renovations that 

involve one of the following:

701.2 Emerald Level Points. The Performance Path shall be used to achieve to the 

Emerald Level.

701.4.1.1 Space heating and cooling system/equipment shall be 

sized according to heating and cooling loads calculated using ACCA 

Manual J or equivalent. 

701.4.1.2 Where installed, as a primary heat source in the building, 

radiant or hydronic space heating system is designed using industryapproved guidelines (e.g. ACCA Manual J, GAMA H-22, or an 

accredited design professional's and manufacturer's recommen

Addition and Renovation Note: Section 701.4.1.1 is mandatory for 

both additions and renovations where new HVAC equipment is 

installed.

Addition and Renovation Note: The additional points for section 

701.4.1.1 apply to additions or renovations that include one or both of 

the following: 

(1) a change in heating and cooling loads

(2) a replacement and/or addition of mechanical equipment

701.1.2 Minimum Prescriptive Path Requirements. A building complying with 

section 703 shall obtain a minimum of 30 points from Section 703, and shall include a 

minimum of two practices from Section 704. 

(b) Batt and loose-fill insulation is held in place by permanent 

attachments or systems in accordance with the manufacturer’s 

instructions.

701.4.3.1 GENERAL Insulation and air sealing is in accordance with 

the following: 

(2) For the Green Remodel Path (Section 305.5), the existing building 

or dwelling unit shall comply with Table 305.5)

(1) For the Green Building Path (Section 305.4), the existing building 

or dwelling unit shall comply with the mandatory renovation/addition 

practices and shall achieve the points indicated in Table 303.

701.1.1 Minimum Performance Path Requirements. A building complying with 

Section 702 shall exceed the baseline minimum performance required by the IECC by 

15%, and shall include a minimum of two practices from Section 704.

Page 7 of 25
APPENDIX B 247

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

0 0 See flashing details on plan.

 1 Add'l Pt

Mandatory

0 0 SPF?

 1 Add'l Pt

Mandatory

0 0 N/a pier foundation.

0 74 Cost to retrofit from underneath. 2 hours field.

 1 Add'l Pt

Mandatory

0 0 N/a

 1 Add'l Pt

Mandatory

0 0 

Mandatory

0 0 Captured in 902.6(1)

 1 Add'l Pt

Mandatory

0 0 No recessed lights.

 1 Add'l Pt

Mandatory

0 0 2006 IECC R806.3

 2 Add'l Pts

701.4.4 FENESTRATION

Mandatory

0 0 2006 IECC zone2 u=.75 SHGC=.40; cost 

differential between this and u=.65 is 

negligible.

Table 701.4.4.1

Fenestration Specifications

Climate Zones U-Factor SHGC

1 and 2 0.65 0.4

3 0.4 0.4

4 to 8 0.35 Any

1 to 3 0.75 0.4

4 to 8 0.6 Any

702 Performance Path

Mandatory

0 Performance path.

Ducts were sealed and a programmable Tstat 

was added to reach 15%. See 704.6.1(1) and 

(1) 15%

30 30 575 (30) R-38 ceiling to meet 15% efficiency. Upgrade 

WH from .92 to .94.

(2) 30%

60

60 2,411 (60) Upgrade floor insulation to R-30. Upgrade 

heat pump to 16SEER/9.0. Cut duct leakage 

in half - to 6%. Tankless water heater.

(3) 50%

100

100 0 (100) See 704.3.2.1 for cost of ICS solar hot water. 

Tankless electric cost at (2) above, silver level.

(4) 60%

120

120 3,413 R-49 ceiling insulation. R-5 continuous foam; 

move ducts inside (cost at 704.6.2.2.(2)). 

18SEER/9.0

 0 Add'l Pts

703 Prescriptive Path 

Points per Table 

703.1.1

Sect. 703 pts. 0

Practices 704 6

Zone 2 Zone 3

10% UA improvement 10 points 12 points

20% UA improvement 20 points 24 points

Zone 4 Zone 5-6

10% UA improvement 14 points 16 points

20% UA improvement 28 points 32 points

Zone 7-8

10% UA improvement 18 points

20% UA improvement 36 points

 0 Add'l Pts

Total Building Thermal Envelope UA

(3) Eave vents. Where ceiling/attic assemblies or designs have eave 

vents, baffles, or other means shall be utilized to minimize air 

movement into or under the insulation.

701.4.4.1 The NFRC-certified U-factor and SHGC windows, exterior 

doors, skylights, and tubular daylighting devices (TDDs) are in 

accordance with ENERGY STAR, or equivalent, or Table 701.4.4.1. 

Decorative fenestration elements with a maximum area of 15 sq

Skylights and TDDs 

(max. certified ratings)

Windows and Exterior Doors 

(maximum certified ratings)

702.2 Energy efficiency features are implemented to achieve energy 

cost performance that exceeds ICC IECC by the following. A 

documented analysis using software in accordance with ICC IECC, 

Section 404, or ICC IECC Section 506.2 through 506.5, applied a

Renovation Note: Provide blocking or baffle at eaves to ensure 

ventilation over attic iinsulation.

702.1 Points from Section 702 (Performance Path) shall not be 

combined with points from Section 703 (Prescriptive Path).

(1) Windows and Doors. Caulking, gasketing, adhesive flashing 

tape, foam sealant, or weatherstripping is installed forming a 

complete air barrier. 

(4) Skylights and kneewalls. Skylight shafts and knee walls are 

insulated to the same level as the exterior walls.

Renovation Note: Existing perimeter sill plates are sealed.

Renovation Note: Existing windows and doors are weather-stripped 

and sealed.

(5) Exterior Architectural features. Code required building 

envelope insulation and air sealing is not disrupted at exterior 

architectural features such as stairs and decks. 

Renovation Note: Existing attic access, knee wall door, or dropdown stairs are insulated.

(2) Band Joist and Rim Joists. Band and rim joists are insulated 

and air sealed.

701.4.3.4 CEILINGS AND ATTICS

Renovation Note: Existing uninsulated rim and/or band joists are 

insulated.

(a) Sill sealer, or other material that will expand and contract, shall be 

installed between foundation and sill plate.

(b) Caulk or the equivalent is installed to seal the bottom plate of 

exterior walls.

(3) Between Foundation and Sill Plate Bottom Plate

Renovation Note: Existing skylight shafts and kneewalls are 

insulated.

(1) Attic access (except unvented attics). Attic access, knee wall 

door, or drop down stair is covered with insulation and gasketed. 

Knee wall door is insulated unit or is covered with insulation.

(2) Recessed Lighting. Recessed light fixtures that penetrate the 

thermal envelope are airtight, IC rated, and sealed with gasket, caulk, 

or foam.

Table 703.1.1

Climate Zone

Addition Note: Section 703.1.1 applies to the new construction 

portion of additions.

Renovation Note: Replace existing recessed lights that penetrate 

the thermal envelope with airtight, IC-rated recessed light fixtures that 

are sealed to drywall with gasket, caulk, or foam. (Additional point 

per fixture)

703.1 Building envelope. Where the total building thermal envelope 

UA is less than required by ICC IECC, Section 402.1.4, the total 

building thermal envelope UA is in accordance with Table 703.1.1. 

Where insulation is used to achieve these percentages, a

Renovation Note: Application of Section 702.2: A baseline energy 

use measurement is calculated for the existing building. (Based on 

the reduction in whole building energy use, points are given for every 

increase in efficiency in accordance with Section

Page 8 of 25
248 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory 

0 Add'l Points

15

30

45

Points per Table 

703.1.2

Grade Points

1 15

2 10

3 0

Points per Table 

703.1.3

Table 703.1.3

Exterior Mass Walls

3 in. to <6 in. 6 in.

Climate Zones 1, 2, 3, 4 except marine, and 5 

dry. 4 6

Climate Zones 4 marine, 5 except dry, and 6. 3 5

Climate Zones 7 and 8 0 0

703.2 Insulation & Air Sealing

15

(2) No third party verification performed. 3

703.2.1.1 GENERAL

(ii) Floor insulation over vented or ambient conditions is enclosed on 

six sides.

(c) Floor insulation over unconditioned basements is not required to 

be enclosed on six sides. 

(d) Ceiling insulation is not required to be enclosed when the 

insulation is installed in complete contact with the drywall or plywood 

surfaces it is intended to insulate.

(e) Eave baffles or equivalent construction is installed to prevent wind 

washing.

(a) Standard insulation installation not in accordance with Grade 1 or 

Grade 2 criteria.

(f) Installation with occasional installation defects is permitted: gaps 

around wiring, electrical outlets, plumbing and other intrusions; 

rounded edges or shoulders.

703.1.2.4 Grade 3 installation is in accordance with the following:

703.1.3 More than 75% of the above-grade exterior opaque wall area 

of the building is mass walls. 

703.2.1.1.1 Air Barrier and Thermal Barriers

Mass Construction

(1) Third party verification performed.

703.2.1 Insulation and air sealing is installed in accordance with all of 

the following, as applicable:

(b) In conditioned basement or crawlspace the following apply:

(i) insulation is installed in complete contact with the subfloor 

surfaces. 

(a) A maximum of 2% of the surface area of insulation is missing. 

Compression or incomplete fill amounts to 10 percent or less, 

presuming the compression or fill is a minimum of 70 percent of the 

intended fill thickness.

(h) “Grade 1” insulation must meet or exceed all requirements of 

“Grade 2” insulation.

703.1.2.3 Grade 2 installation is in accordance with the following:

(g) ICFs, SIPs, and other wall systems that provide integral insulation 

comply with “Grade 1” insulation installation requirements where 

properly installed. 

(d) Cavity insulation is split, installed, and/or fitted tightly around 

wiring and other services.

(e) Exterior sheathing is not visible from the interior through gaps in 

the cavity insulation.

(f) Faced batt insulation is permitted to have side-stapled tabs, 

provided the tabs are stapled neatly with no buckling, and provided 

the batt is only compressed at the edges of each cavity, to the depth 

of the tab itself.

(c) Exterior rigid insulation shall have substantial contact with the 

structural framing members or sheathing materials, and is tightly 

fitted at joints.

(c) Wall cavity insulation is enclosed on all six sides, and is in 

substantial contact with the sheathing material on one or more sides 

(interior or exterior) of the cavity.

(a) Insulation uniformly fills each cavity side-to-side and top-tobottom, without substantial gaps or voids around obstructions (such 

as blocking or bridging).

703.1.2.2 Grade 1 installation in accordance with the following: 

(b) Compression or incomplete fill amounts to no more than 2% or 

less, presuming the compression or fill is at least 70% of the intended 

fill thickness; occasional small gaps are acceptable.

(a) Grades apply to cavity fill insulation, continuous rigid insulation, 

and any other field-installed insulation products. Grading applies to 

ceilings, walls, rim joists, conditioned basements and crawlspaces, 

except as specifically noted. Inspection s

(b) Insulation is installed in accordance with the manufacturer’s 

instructions and/or industry standards.

703.1.2.1 Both Grade 1 and Grade 2 installations are in accordance 

with the following:

(2) If the existing overall thermal performance is below the 

requirements of ICC IECC, Section 402.1.4, the overall thermal 

performance of the whole building thermal envelope UA is improved a 

minimum of the following:

Insulation Installation Grades

(a) 15 percent

(b) 30 percent

(a) 45 percent, or meets the requirement of ICC IECC, Section 

402.1.4

Table 703.1.2

703.1.2 The insulation installation is graded by a third party and is in 

accordance with Sections 703.1.2.1, 703.1.2.2, 703.1.2.3, and /or 

703.1.2.4, as applicable. (Points not awarded in this section if 

already awarded under Section 703.1.1)

Renovation Note: The existing whole building thermal envelope UA 

is evaluated. One of the following is selected based on the 

evaluation.

(1) If the overall thermal performance meets or exceeds the 

requirements of ICC IECC; Section 402.1.4; Section 703.1.1 applies 

to the renovation.

(1) Thermal insulation is installed in substantial contact with interior 

and exterior air barrier to provide continuous alignment of the 

insulation with the air barrier. The following are deemed to be their 

own air barrier:

(a) Any spray or rigid foam insulation with an air permeance of 0.02 

L/s-m2 or less at 75 Pa.

Page 9 of 25
APPENDIX B 249

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(d) Air impermeable insulation.

703.2.1.1.2 Plumbing and Wiring 

703.2.1.3 WALLS

703.2.1.4 CEILINGS and ATTICS

 0 Add'l Pts

 1 Add'l Pt

(a) 15 percent 1 Add'l Pt

(b) 30 percent 2 Add'l Pts

(c) 50 percent 3 Add'l Pts

703.3 FENESTRATION

Points Per 

Tables 

703.3.1(a) or 

703.3.1(b)

U-Factor and SHGC Climate Zone

0.45 0.30 1 and 2 8

0.35 0.30 3 8

0.30 Any 4 and 5 5

0.30 Any 6 and 8 6

0.55 0.35 1 to 3

0.55 Any 4 to 8

U-Factor and SHGC Climate Zone

0.45 0.25 1 and 2 10

0.35 0 .25 3 10

0.25 Any 4 and 5 10

0.25 Any 6 thru 8 12

0.50 0.35 1 to 3

0.50 Any 4 to 8

 0 Add'l Pts

(2) Access to vented attics, including knee wall doors, and/or drop 

down stairs, is caulked, gasketed, or otherwise sealed.

(3) Duplex and townhouse construction: In the common walls 

between dwelling units (e.g., gypsum shaft wall) an air barrier is 

installed to seal the gap between the common wall and the structural 

framing.

(2) Batt insulation is split or cut to fit around wiring and plumbing.

(3) Sprayed insulation is installed to encapsulate pipes where the pipe 

temperature is 180 degrees F (82.2C) or less. Wiring is fastened in 

place to prevent displacement prior to spraying.

(4) Skylight shafts and knee walls are air sealed. Insulation on attic 

knee walls and skylight shafts are physically supported by stapling in 

place, netting or using other mechanical attachment.

(5) Fireplace walls: Air barrier that is alligned with insulation; any 

gaps are sealed with caulk or foam.

703.2.1.1.4 HVAC register boots that penetrate the building envelope 

are caulked or sealed to the subfloor or drywall.

included above

included above

(3) An insulated cover is gasketed or sealed to the attic opening 

where a whole building or whole dwelling unit fan penetrates into the 

attic.

(1) Where the overall air infiltration rate is equal to or less than the 

requirements for new construction (as indicated in Section 704.6.2.1), 

this item applies to the renovation.

Addition Note: Section 703.2.1 applies only to the new construction 

portion of additions.

Windows and Exterior Doors (maximum certified ratings)

Addition Note: Section 703.3.1 applies only to the new construction 

portion of additions. (Points available on the basis of a ratio of new 

window area to total window area (new window area divided by total 

window area.)

(1) At dropped ceilings and soffits, the air barrier is substantially 

aligned with insulation and any gaps are sealed with caulk, foam, or 

tape. 

(2) Where the overall air infiltration rate is greater than the 

requirements for new construction (as indicated in Section 704.6.2.1), 

reduce the air infiltration of the whole building envelope by:

703.3.1 The NFRC-certified U-factor and SHGC for windows, exterior 

doors, skylights, and tubular daylighting devices (TDDs) are in 

accordance with Table 703.3.1(a) or (b). Decorative fenestration 

elements with a maximum of 15 square feet or 10% of the to

Table 703.3.1(a) - Enhanced Fenestration Specifications

Windows and Exterior Doors (maximum certified ratings)

Renovation Note: The air infiltration of the existing whole building 

envelope is evaluated. Based on the evaluation, choose one of the 

following: (Additional points awarded only where third-party 

verification is not performed.)

Skylights and TDDs (maximum certified ratings)

Table 703.3.1(b) - Enhanced Fenestration Specifications

Skylights and TDDs (maximum certified ratings)

703.2.1.1.3 Narrow cavities are filled and batts are cut to fit.

703.2.1.1.5 Masonry fireplace equipped with gasketed doors, outside 

combustion air, and a chimney top damper.

(1) Exterior walls behind the tub/shower are insulated and include an 

interior and exterior air barrier.

(2) Air sealed type electrical outlet boxes are installed or the air barrier 

extends completely behind the boxes. Insulation is placed between 

the sheathing and the rear of electrical or phone boxes located on 

exterior walls. Electrical outlet boxes ar

703.2.1.2 Air barrier is installed at any exterior edge of insulation at 

floors, foundations, and crawlspaces including insulated floors above 

garages and cantilevered floors.

(4) Any exterior rigid insulation is tightly fitted or interlocking at the 

joints. 

(1) At a minimum, insulation is placed between the outside (ceiling, 

wall, or floor) and the pipes.

(3) Insulation is in substantial contact with sheathing materials on 

one or more sides.

(b) ICFs, SIPS, and other wall systems that provide their own air 

barrier, except at interfaces with other materials or assemblies, or 

penetrations.

(c) Spray foam that complies with the following: 

(ii) Continuous in the cavity without any unrepaired breaks.

(iii) air impermeable

(2) Voids or areas of incomplete fill (less than 30% of full thickness) 

are 2% or less of the insulated area.

(i) continuously attached to the top, bottom and both sides of the 

cavity

Page 10 of 25
250 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2 Add'l Pts

703.4 HVAC Equipment Efficiency

4

(1) Table 703.4.2(1) Gas and propane 

heaters:

Climate Zone AFUE Points

1 >90% 0

1 >92% 0

1 >94% 0

2 >90% 2

2 >92% 2

2 >94% 3

3 >90% 5

3 >92% 6

3 >94% 7

4 >90% 8

4 >92% 9

4 >94% 10

5 >90% 11

5 >92% 12

5 >94% 14

6 through 8 >90% 14

6 through 8 >92% 15

6 through 8 >94% 17

Table 703.4.2(2) Oil Furnace:

Climate Zone AFUE Points

1 >83% 0

1 >90% 0

2 >83% 1

2 >90% 2

3 >83% 3

3 >90% 5

4 >83% 3

4 >90% 8

5 >83% 7

5 >90% 11

6 through 8 >83% 7

6 through 8 >90% 14

(3) Gas Boiler: Points per Table 

703.4.2(3)

Climate Zone AFUE Points

1 >85% 0

1 >90% 0

1 >94% 0

2 >85% 1

2 >90% 2

2 >94% 3

3 >85% 3

3 >90% 5

3 >94% 7

4 >85% 4

4 >90% 8

4 >94% 10

5 >85% 6

5 >90% 11

5 >94% 14

6 through 8 >85% 7

6 through 8 >90% 14

6 through 8 >94% 17

Table 703.4.3.2(4) Oil Boiler: Points per Table 

703.4.2(4)

Climate Zone AFUE Points

1 >85% 0

1 >90% 0

2 >85% 1

2 >90% 2

3 >85% 3

3 >90% 5

4 >85% 4

4 >90% 8

5 >85% 6

5 >90% 11

6 through 8 >85% 7

6 through 8 >90% 14

1

Points per Table 

703.4.4

Climate Zone Efficiency Points

1 8.2HSPF 11.5EER 0

1 9.0HSPF 12.5EER 0

2 8.2HSPF 11.5EER 1

2 9.0HSPF 12.5EER 2

3 8.2HSPF 11.5EER 2

3 9.0HSPF 12.5EER 5

4 8.2HSPF 11.5EER 5

4 9.0HSPF 12.5EER 10

5 8.2HSPF 11.5EER 7*

5 9.0HSPF 12.5EER 11*

6 through 8 8.2HSPF 11.5EER 7*

6 through 8 9.0HSPF 12.5EER 12*

Points per Table 703.4.2(2)

Points per Table 703.4.2(1)

Renovation Note: Section 703.3.1 applies only to the replacement 

of existing windows. (Points available on the basis of a ratio of new 

window area to total window area (new window area divided by total 

window area.)

 Table 703.4.4 - Heat Pump Heating

*Zones 5-8 require consideration for use of resistance heat in cold 

climates when installing a heat pump.

703.4.3 Boiler equipped with temperature reset control or burner 

delay control. 

703.4.1 Combination Space Heating and Water Heating System 

(“Combo” System) is installed using either a coil from the water 

heater connected to an air handler to provide heat for the building or 

dwelling unit, or a space heating boiler using an indirect 

703.4.2 Furnace and/or boiler efficiency is in accordance with one of 

the following: 

Table 703.4.2(1) - Gas / Propane Heaters

703.4.4 Heat pump heating efficiency is in accordance with Table 

703.4.4. Refrigerant charge is verified to be in conformance with 

manufacturer’s instructions.

Table 703.4.2(2) - Oil Furnace:

Table 703.4.2(3) - Gas Boiler

Table 703.4.2(4) - Oil Boiler

Page 11 of 25
APPENDIX B 251

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Points per Table 

703.4.5(1)

Climate Zone SEER (EER) Points

1 14 (11.5) 8

1 15 (12.5) 12

1 17 (12.5) 18

1 19 (12.5) 24

2 14 (11.5) 6

2 15 (12.5) 10

2 17 (12.5) 14

2 19 (12.5) 18

3 14 (11.5) 2

3 15 (12.5) 4

3 17 (12.5) 6

3 19 (12.5) 8

4 14 (11.5) 2

4 15 (12.5) 3

4 17 (12.5) 4

4 19 (12.5) 4

5 14 (11.5) 1

5 15 (12.5) 2

5 17 (12.5) 3

5 19 (12.5) 3

6 through 8 14 (11.5) 1

6 through 8 15 (12.5) 2

6 through 8 17 (12.5) 3

6 through 8 19 (12.5) 3

Points per 

Table 

Table 703.4.5(2) - Water Source and Cooled Air Conditioners

Climate Zone EER, COP Points

1 15 4.0 18

2 15 4.0 14

3 15 4.0 6

4 15 4.0 4

5 15 4.0 3

6 through 8 15 4.0 3

(1) Open loop; >16.2 EER and > 3.6 COP 20

20

20

30

1

2

1

4

1

0 Add'l Pts

1 Add'l Pt

(1) Gas Water Heating

Size (gallons) Energy Factor POINTS

30 to < 40 0.64 1

40 to < 50 0.62 1

50 to < 65 0.6 1

65 to < 75 0.58 1

75 0.56 1

 Any 0.8 10

Size (gallons) Thermal Efficiency POINTS

Any 82-86% 1

 Any > 86% 10

(2) Electric Water Heating

Size (gallons) Energy Factor POINTS

30 to < 40 0.95 1

40 to < 50 0.94 1

50 to < 65 0.92 1

65 to < 80 0.9 1

80 to < 100 0.88 1

100 0.86 1

(3) Oil Water Heating

Size (gallons) Energy Factor POINTS

30 to < 50 0.59 1

50 0.55 1

 (4) Heat Pump Water Heating

Energy Factor POINTS

Heat Pump 1.5 7

Heat Pump 2 10

Points per Table 

703.5.2

(Storage with input rate of 75,000 Btu/hr or less or instantaneous 

input rate of 200,000 Btu/hr or less)

(2) Install a device that can provide near real-time energy 

consumption information.

Renovation Note: Replace existing nonprogrammable thermostat.

703.4.10 An ENERGY STAR, or equivalent, programmable 

thermostat is installed to control each heating and cooling zone. 

(Points awarded per dwelling unit.)

(2) Water Source and Cooled Air Conditioners 

Addition Note: Section 703.4.10 applies to the new construction 

portion of additions. 

(2) Closed loop; >14.1 EER and > 3.3 COP

Table 703.5.1(2) – Electric Water Heating

Points Per 

Tables 

703.5.1(1)(a) or 

703.5.1(1)(b)

703.5.2 Desuperheater, s installed by a qualified installer or is preinstalled in the factory.

Table 703.5.1(1)(a) - Gas Water Heating

Points per Table 

703.5.1(3)

Table 703.5.1(1)(b) - Gas Water Heating

Points per Table 

703.5.1(4) Table 703.5.1(4) – Heat Pump Water Heating

(Storage with input rate of greater than 75,000 Btu/hr or 

instantaneous input rate greater than 200,000 Btu/hr)

Table 703.5.1(3) – Oil Water Heating

Points Per 

Tables 

703.5.1(2)

703.4.9 In multi-unit buildings, an advanced electric and fossil fuel 

submetering system is installed to monitor electricity and fossil fuel 

consumption for each unit. At a minimum, the information is 

available to the occupants on a monthly basis. 

703.4.7 ENERGY STAR, or equivalent, ceiling fans are installed. 

(Points awarded per building.)

703.4.8 Whole building or whole dwelling unit fan(s) with insulated 

louvers and a sealed enclosure is installed. (Points awarded per 

building.)

(1) Install a device providing monthly consumption information.

703.5 Water Heating Design, Equipment, and Installation

703.5.1 Water heater Energy Factor (EF) is equal to or greater than 

the following:

703.4.5 Cooling efficiency is in accordance with one of the following. 

Refrigerant charge is verified for conformance with manufacturer’s 

instructions.

Table 703.4.5(1) - Air Conditioner and Heat Pump Cooling

703.4.6 Ground source heat pump is installed by a Certified 

Geothermal Service Contractor in accordance with one of the 

following ENERGY STAR levels:

(3) Direct expansion; >15.0 EER and > 3.5 COP

(4) Any type (open, closed or direct expansion); >24 EER and > 4.3 

COP

Page 12 of 25
252 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Points for 

Desuper heater

5

2

2

703.5.4 Insulating hot water pipes 

1

1

 0 Add'l Pts

1 Add'l Pt

1

704 Additional Practices

704.2 Lighting and Appliances

8 pts max

4

4 

8

4 125 $25 per fixture; 5 fixtures

 0 Add'l Pts

 1 Add'l Pt

(2) 75 percent 2 Add'l Pts

(3) 100 percent 3 Add'l Pts

2

2 No recessed.

 Mandatory 0 

Add'l Pts

 1 Add'l Pt

(1) 25% of lighting 2

(2) 50% of lighting 4

2

(1) Refrigerator 5 5 0 Moved refrig to bronze. Cost neutral.

(2) Dishwasher 2 2 0 

(3) Washing machine 4 4 0 Moved to match Chapter 8 Washer. See cost in 801.2(2).

(1) replace existing refrigerator 2 Add'l Pts

(2) replace existing dishwasher 1 Add'l Pt

 1 Add'l Pt

704.2.6 Induction cooktop is installed. 1

1

5

Climate Zone

Zone 5-8

(c) Sloped skylights on slopes facing within 45o of true South, East or 

West are less than 1.5% of the Finished Ceiling area

(7) Overhangs or adjustable canopies or awnings or trellises provide 

shading on south facing glass for the appropriate climate zone in 

accordance with Table 704.3.1.1:

Table 704.3.1.1 Southern Window Overhang Depth

(5) Vertical glazing area is less than 8% of gross Conditioned Floor 

Area on the north face, and glazing is ENERGY STAR compliant or 

equivalent.

(6) Skylights, where installed, are in accordance with the following:

(a) Shades and insulated wells are used and all glazing is ENERGY 

STAR compliant or equivalent.

(b) Horizontal skylights are less than 0.5 % of Finished Ceiling Area

(1) The long side (or one side if of equal length) of the building faces 

within 20o of true south.

(2) Vertical glazing area is between 5% and 7% of gross Conditioned 

Floor Area on the south face (also see Section 704.3.1.1(8)).

(3) Vertical glazing area is less than 2% of gross Conditioned Floor 

Area on the west face, and glazing is ENERGY STAR compliant or 

equivalent.

(4) Vertical glazing area is less than 4% of gross Conditioned Floor 

Area on the east face and glazing is ENERGY STAR compliant or 

equivalent.

Renovation Note: Section 704.2.2 applies where room for 

installation within the conditioned envelope is available. (To receive 

additional points, a minimum of 50% of the total recessed ceiling 

lights are in accordance with Section 704.2.2.)

704.2.7 Occupancy sensors are installed for a minimum of 80% of 

hardwired lighting outlets.

704.3.1 Solar space heating and cooling.

Addition and Renovation Note: Section 704.2.5 applies as follows:

(3) replace existing washing machine

704.3 Renewable Energy/Solar Heating and Cooling

704.2.4 Tubular daylighting device (TDD) or a skylight with sealed, 

insulated, low-E glass is installed in rooms without windows. (Points 

awarded per building.)

(1) A minimum of 50% of the total hard-wired lighting fixtures, or the 

bulbs in those fixtures, qualify as ENERGY STAR or equivalent.

(2) A minimum of 50% of the total hard-wired lighting fixtures qualify 

as ENERGY STAR or equivalent.

704.2.5 ENERGY STAR or equivalent appliance(s) are installed:

(3) A minimum of 80% of the exterior lighting wattage has an 

efficiency of at least 40 lumens per watt or be a solar powered light 

fixture. 

704.2.2 The number of recessed light fixtures that penetrate the 

thermal envelope are less than 1 per 400 square feet of total 

conditioned floor area and are in accordance with Section 

701.4.3.4(2). 

704.2.3 Occupancy sensors are installed on indoor lights, and photo 

or motion sensors are installed on outdoor lights to control lighting. 

Addition Note: Section 704.2.1 applies only to the new construction 

portion of additions. 

Renovation Note: A percentage of the total lighting fixtures, or the 

lights in those fixtures, are replaced with fixtures or lights that qualify 

as ENERGY STAR or equivalent.

(1) 50 percent

Addition Note: Section 704.2.2 is mandatory for the new 

construction portion of additions.

703.5.5 Indirect fired water heater storage tanks heated from boiler 

systems are installed.

703.5.4.1 Hot water lines are insulated with a minimum of R-4 

insulation.

703.5.4.2 Boiler supply piping is insulated in unconditioned spaces.

Table 703.5.2 – Desuperheater

Zone 1-4

704.2.1 Hard-wired lighting meets one of the following: 

704.1 Application of Additional Practice Points. Points from 

Section 704 can be added to points earned in Section 702 

(Performance Path), Section 703 (Prescriptive Path) or Section 

701.1.3 (alternative Bronze Level compliance).

Renovation Note: Where hot water lines in the existing building are 

accessible, the hot water lines are insulated in accordance with 

Section 703.5.4. (To receive additional points, a minimum of 50 

percent of the existing hot water lines are insulated.)

703.5.3 Drain-water heat recovery system is installed in multi-family 

units. (Points awarded per building.)

704.3.1.1 Sun-tempered Design: Building orientation, sizing of 

glazing, and design of overhangs are in accordance with all of the 

following:

Addition Note: Section 703.5.4 applies only to the new or modified 

plumbing associated with the addition. 

Page 13 of 25
APPENDIX B 253

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Climate Zone and Overhang Depth

Vertical Distance 

between bottom of 

overhang and top of 

window sill

1 through 3 2' 8" <7' 4"

1 through 3 2' 8" <6' 4"

1 through 3 2' 4" <5' 4"

1 through 3 2' 0" <4' 4"

1 through 3 2' 0" <3' 4"

4 through 6 2' 4" <7' 4"

4 through 6 2' 4" <6' 4"

4 through 6 2' 0" <5' 4"

4 through 6 2' 0" <4' 4"

4 through 6 1' 8" <3' 4"

7 and 8 2' 0" <7' 4"

7 and 8 1' 8" <6' 4"

7 and 8 1' 8" <5' 4"

7 and 8 1' 4" <4' 4"

7 and 8 1' 0" <3' 4"

0 Add'l Pts

 1 Add'l Pt

1

3

1

(c) Covered porches

 0 Add'l Pts

 1 Add'l Pt

4

704.3.2 Solar water heating

SEF - Electric Tank SEF - Gas Tank POINTS

1.30 - 1.50 0.85 - 1.00 8 8 4,500 ICS Solar assists meeting 50% goal.

704.3.2.1 Solar water heater. SRCC (Solar Rating & Certification 

Corporation) OG 300 rated, or equivalent, solar domestic water 

heating system is installed. Solar Energy Factor (SEF as defined by 

SRCC) is in accordance with Table 704.3.2.1.

Table 704.3.2.1 - Solar Hot Water Systems

(a) Thermal mass is solid and a minimum of 3” in thickness. Where 

two thermal mass materials are layered together (e.g. ceramic tile on 

concrete base) to achieve the appropriate thickness, they are fully 

adhered to (touching) each other. 

(b) Thermal mass directly exposed to sunlight must be provided in the 

following minimum ratios: 

(i) Above latitude 35o: 5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(ii) Latitude 30o to 35o: 5.5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(iii) Latitude 25o to 30o: 6 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(c) Thermal mass not directly exposed to sunlight is permitted to be 

used to achieve thermal mass requirements of Section 704.3.1.4 (2) 

based on a ratio of 40 square feet of thermal mass for every 1 square 

foot of south facing glazing. 

(3) In addition to return air or transfer grilles/ducts required by Section 

704.3.1.1, provisions for forced airflow to adjoining areas are 

implemented as needed. 

(2) Additional thermal mass for any room with south-facing glazing of 

more than 7% of the finished floor area is provided in accordance with 

the following:

704.3.1.4 Passive solar heating design. In addition to the suntempered design features in Section 704.3.1.1, all of the following are 

implemented: 

Addition Note: Section 704.3.1.3 applies to the new construction 

portion of additions. (Points are available on the basis of a ratio of 

new buidling area to total building area. New building area divided by 

total building area.)

Renovation Note: Section 704.3.1.3 applies to existing construction. 

A minimum of one design feature is required.

(1) Additional glazing, no greater than12%, is permitted on the south 

wall. This additional glazing is in accordance with the requirements 

in Section 704.3.1.1. 

(b) Moveable awnings or louvers

(d) Attached or detached conditioned/unconditioned enclosed space 

that provides full shade of east and west windows (e.g., detached 

garage, shed or building)

(2) Overhangs are installed to provide shading on south-facing 

glazing in accordance with Section 704.3.1.1(7). (Points not 

awarded if points are taken under 704.3.1.1.)

(3) Windows and/or venting skylights are located to facilitate cross 

ventilation.

(4) Solar reflective roof or radiant barrier is installed in Climate Zones 

1, 2 or 3 and roof material meets a 3 year aged criteria of 0.50.

(5) Internal exposed thermal mass is a minimum of three inches in 

thickness. Thermal mass consists of concrete, brick, and/or tile that 

are fully adhered to a masonry base or other masonry material and is 

in accordance with one or a combination of the fo

(a) A minimum of one square foot of exposed thermal mass of floor 

per three square feet of gross finished floor area. 

(b) A minimum of three square feet of exposed thermal mass in 

interior walls or elements per square foot of gross finished floor area.

(6) Roofing material is installed with a minimum 0.75 inch 

continuous air space offset from the roof deck from eave to ridge.

(9) Return air or transfer grilles/ducts are in accordance with Section 

704.4.5. 

704.3.1.3 Passive cooling design features are in accordance with 

three or more of the following:

(1) Exterior shading is provided on east and west windows using one 

or a combination of the following strategies:

(a) Vine covered trellises with the vegetation separated a minimum of 

1 foot from face of building.

Addition Note: Section 704.3.1.1 applies to the new construction 

portion of additions. (Points are available on the basis of a ratio of 

new building area to total building area. New building area divided by 

total building area.)

Renovation Note: Section 704.3.1.1 applies to existing construction. 

704.3.1.2 Automated solar protection is installed to provide shading 

for windows.

Points for three items:

Points for one additional item:

(8) The south face windows have a SHGC of 0.40 or higher.

Page 14 of 25
254 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1.51 - 1.80 1.01 - 1.20 11

1.81 - 2.30 1.21 - 1.50 14

2.31 - 3.00 1.51 - 2.00 17

3.01 2.01 20

 1 Add'l Pt

1

0.5

704.4 Ducts

5 5 2006 IECC M1601.1

 Mandatory 0 

Add'l Pts

1 Add'l Pt

15

15

12

 0 Add'l Pts

 2 Add'l Pts

5

5 Plans indicate returns every room.

 0 Add'l Pts

 2 Add'l Pts

704.5 HVAC Design and Installation

1

1 

1

1 0 Standard.

3

3

Standard.

Standard.

Standard.

Standard.

149 Allow team of 2 2 hours at field rate.

Standard.

1

1 0 Trane and others include 15' of line set 

alternate refrigerant with product.

4

5

5 Included in verifier's field visit. See 701.3.

260 6% leakage modeled for 15% improvement. 

See cost in 902.

0 2006 IECC required for SLA .00036.

0 

0 

(3) Insulation is installed in accordance with Section 703.1.2 

3. Fireplaces and Fuel Burning Appliances are in accordance with 

901.2.

(4) Windows, skylights, and doors are flashed, caulked, and sealed 

in accordance with manufacturer’s recommendations and in 

accordance with Section 703.2.1.

704.6.2 Third party testing is conducted to verify performance. 

704.6.2.1 Building envelope leakage rate is demonstrated by blower 

door test. In addition to the test, the following practices are required:

1. Whole building ventilation is provided in accordance with Section 

902.2.

2. Fossil fuel furnace and water heater is sealed combustion or power 

vented in accordance with Section 901.1.

(5) Total air flow is within 10% of design flow.

704.5.5 Manufacturer’s label or printed specifications for sealed air 

handler (except furnaces) indicates the leakage is less than or equal 

to 2% of design airflow at a pressure of 1-inch w.g. (1250 Pa). Air 

handlers are tested with inlets, outlets, an

(1) Ducts are installed per IRC/IMC and ducts are sealed.

(2) Building envelope air sealing is installed.

704.5.4 HVAC equipment operates using an alternate refrigerant 

containing no HCFCs. (Points awarded only until January 20, 2010.)

(6) Total external system static does not exceed equipment capability 

at rated airflow. 

(1) Start-up procedure is performed according to manufacturer’s 

instructions.

(2) Refrigerant charge is verified by super-heat and/or sub-cooling 

method.

(2) Heating and cooling ducts and mechanical equipment are 

installed within the conditioned building space .

(3) Ductwork is not installed in exterior walls 

704.4.5 Return ducts or transfer grilles are installed in every room 

with a door. This practice does not apply to bathrooms, kitchens, 

closets, pantries, and laundry rooms. 

Addition Note: Section 704.4.4 applies to the new construction 

portion of additions. 

Renovation Note: Section 704.4.4 applies to renovations that 

involve the demolition, reconfiguration, and/or addition of interior 

walls, or a modification in the duct system of the building, or an 

intentional effort to implement the practices in Section 

704.5.1 ACCA Manual S or equivalent is used to select heating 

and/or cooling equipment.

704.5.2 HVAC contractor and service technician are certified by a 

nationally or regionally recognized program such as North American 

Technician Excellence, Inc. (NATE), Building Performance Institute 

(BPI), Radiant Panel Association, or manufacturers’ tr

704.5.3 Performance of the heating/cooling system is verified by the 

HVAC contractor in accordance with all of the following: 

Addition and Renovation Note: Section 704.3.2.1 applies to 

systems in additions and/or existing buildings. 

704.4.2 Space heating is provided by a system that does not include 

air ducts.

704.4.4 Ductwork is in accordance with all of the following: 

(1) Building cavities are not used as return ductwork.

704.4.3 Space cooling is provided by a system that does not include 

air ducts.

704.3.3.1 Photovoltaic panels are installed on the property. (Points 

awarded per every 100 watts DC of the rated PV system) 

704.3.3.2 Other onsite renewable energy source is installed (e.g., 

wind energy, onsite micro-hydro power, active solar space heating 

systems). (Points awarded per every 1/10 kW of the system) 

704.4.1 Duct system is sized, designed, and installed according to 

ACCA Manual D or equivalent.

Renovation Note: Section 704.4.1 applies only where the duct 

system in the existing building is readily accessible, and the duct 

system is sized, designed, and installed in accordance with ACCA 

Manual D or equivalent. A minimum of 75% of the duct runs a

704.3.3 Additional renewable energy options

Addition Note: New construction portion of additions.

Addition Note: Section 704.4.5 applies to the new construction 

portion of additions. 

(4) Air handler setting/fan speed is set per manufacturer’s 

instructions.

Renovation Note: Section 704.4.5 applies to renovations that 

involve the demolition, reconfiguration, and/or addition of interior 

walls, or a change in the heating, cooling, and ventilation system of 

the building, or a test of the building for balanced p

704.6 Installation and Performance Verification

(3) Burner is set to fire at nameplate input.

704.6.1 Third party onsite inspection is conducted to verify 

conformance with all of the following, as applicable. Minimum of 2 

inspections are performed. One inspection after insulation is installed 

and prior to being covered, and another inspection up

Page 15 of 25
APPENDIX B 255

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(a) 5 ACH50 0.25 nat 3

(b) 4 ACH50 0.2 6

(c) 3 ACH50 0.15 9

(d) 2 ACH50 0.1 12

(e) 1 ACH50 0.05 15

15

See 704.6.1(1) for cost of duct seal. BD and 

DB tests here not subtracted.

5

5 680 Move ducts and A/H inside building envelope. 

Cost is SF price to consumer given up to 

equipment - 

15

8

 0 Add'l Pts

1 Add'l Pt

 3 Add'l Pts

7 Points Max

2 2 0 

(2) Energy monitoring device 4 4 150

(3) Energy management control system 7

2

5

Base Pts. 5 0 9 114 23 348 18 350 17 534 Ch. 8 Subtotal 

Cost/Point 0 13 15 19 31

2

Water heater location in attic.

3 3 0 -3

Runs can be minimized further by locating the 

water at midpoint of bath and kitchen.

6

6

8 8 0

Simple to implement in a small house with 

two baths

 Mandatory 0 

Add'l Pts

Mandatory

Points Reduced 

by Half

0 Add'l Pts

Points Reduced 

by Half

2 Add'l Pts

2 2

8 8 348 (8) (348) Includes cost of EStar for 704.2.5

12 12 500

Addition Note: Section 704.6.2 applies to the new construction 

portion of additions. (Points are available on the basis of a ratio of 

new area to total area.) (New area divided by total area.)

(b) Total airflow is within 10% of design flow.

CHAPTER 8: WATER EFFICIENCY

(3) One of the following piping system designs is implemented:

(1) The overall energy performance features of the existing building 

are equal to or better than the requirements for new construction.

(2) If the overall energy performance features of the existing building 

are less than the requirements for new construction, third party 

testing is conducted to verify performance claimed in Sections 

701.4.2.1, 703.1 and 703.2.1.

705.1 Energy consumption control. A whole building or whole 

dwelling unit device is installed that controls or monitors energy 

consumption. 

(3) 6% for ductwork both inside and outside the building thermal 

envelope.

Renovation Note: Section 704.6.2 applies as follows: Evaluate the 

performance features of the existing whole building envelope. Choose 

one of the following based on the evaluation:

(b) On demand hot water recirculation system is installed.

801.2 Energy Star® or equivalent water-conserving appliances are 

installed 

Addition Note: Section 801.1 applies only to the new construction 

portion of addition(s) that alter portions of a building with hot water 

applicances and/or fixtures.

Renovation Note: Section 801.1 applies only to renovation projects 

that have the ability to meet the requirements of Section 801.1. 

(Renovation projects that are unable to meet the length of pipe 

runs indicated in Section 801.1, but are able to shorten e

(1) Minimum of 25% to less than 50% reduction in total pipe length or 

volume.

(2) More than or equal to 50% reduction in total pipe length or 

volume.

Addition Note - Section 801.1.1(3): Where a new hot water system 

is provided in an addition, this item applies. (Points for Section 

801.1.1(3)(a), (b), and (c).

Addition and Renovation Note - Section 801.1.1(3): Section 

801.1.1(3) applies only where hot water lines in the existing building 

are accessible. (To receive additional points, a minimum of 50 

percent of the hot water lines are in accordance with Section

(1) Dishwasher

(3) Washing machine with a water factor of 6.0 or less

(2) Washing machine

(b) Implement an engineered parallel piping system (i.e. manifold 

system) in which the hot water line distance from the water heater to 

the parallel piping system is less than 15 feet and the parallel piping 

to the fixture fittings contains a maximum of 8

(c) Central core plumbing system with all plumbing fixture fittings 

(e.g., faucets & showerheads) located such that the volume of water 

contained in each pipe run between the water heater and fixture fitting 

is a maximum of 6 cups (0.38 gallons).

1

(a) Tankless water heater is installed at point of use and is served 

only by cold water or a solar-assisted system.

(4) Pipe runs exceeding 40-feet from the water heater to fixture 

locations are aided by one of the following: 

(a) Use of structured-type plumbing with demand controlled hot water 

loops, in which the volume of water contained in the pipe and fixture 

fittings downstream of the recirculating trunk line is a maximum of 4 

cups (0.25 gallons).

(1) All hot water piping which runs to the plumbing fixtures in both the 

kitchen and bathrooms is 40-feet or less in length from the water 

heater and is sized in accordance with the code for the specified 

application.

(2) All hot water piping which runs to the plumbing fixtures in both the 

kitchen and bathrooms is 30-feet or less from the water heater and is 

sized in accordance with the code for the specified application.

(a) Measured flow at each supply and return register is within 25% of 

design flow.

801.0 Intent. Measures that reduce indoor and outdoor water usage 

are implemented.

801.1. Indoor hot water usage is reduced by one of the following 

practices: 

705 Innovative Practices

801 Indoor and Outdoor Water Use

(1) Programmable communicating thermostat

705.2 Renewable energy service plan is as follows:

704.6.2.3 Balanced HVAC air flows are demonstrated by flow hood 

or other acceptable flow measurement tool. Test results in 

accordance with both of the following:

704.6.2.2 The entire central HVAC duct system, including air 

handlers and register boots, is tested for leakage at a pressure 

differential of 0.1 inches w.g. (25 Pa). The maximum leakage as a 

percent of the system design flow rate is in accordance with 

(1) 6% for ductwork entirely outside the building's thermal envelope.

(2) 6% for ductwork entirely inside the building's thermal envelope.

The maximum leakage rate is in accordance with:

(2) The buyer of the home selects a renewable energy service plan 

provided by the utility prior to occupancy of the home.

(1) Builder selects a renewable energy service plan provided by the 

local electrical utility for interim (temporary) electric service. The 

builder’s local administrative office has renewable energy service.

Page 16 of 25
256 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1 Add'l Pt

1 Add'l Pt

1 Add'l Pt

1 1 114

1 Point 

(3 Points Max)

2 0

Showerhead flow rate max. EPA is 2.5.

1 Add'l Pt

2 Add'l Pts 2 0

Specify lower flow rate faucet/aerator.

0 Add'l Pts

1 Add'l Pt

1 Add'l Pt

1 

3 Pts Max 2 0

2 Add'l Pts 2 0

1 Add'l Pt

2 Add'l Pts

2 Add'l Pts

1 

3 Pts Max

1 Add'l Pt 

6 Pts Max

Mandatory

6 

18 Pts Max

12 350 Install (2) low flow toilets.

4 

Max 4 Points

6 

Add'l Points

6 0

0 Add'l Pts

1 Add'l Pt 

10 Pts. Max

2

4

4

4

4

6

1 Add'l Pt

2 Add'l Pts 

3

1 Add'l Pt

1 Add'l Pt

2

1 Add'l Pt

2 Add'l Pts

801.7.1 A low-volume, irrigation system is installed for each 

landscape type utilized: (Points awarded for each type of 

irrigation system installed.)

Addition and Renovation Note: Replace all faucets in nonrenovated bathrooms with faucets that are in accordance with Section 

801.5.1. 

(3) All shower compartments installed meet the above conditions and 

are 2.0 to less than 2.5 gpm. 

(4) All shower compartments installed meet the above conditions and 

are 1.6 to less than 2.0 gpm. 

801.5 Faucets

Addition and Renovation Note: Section 801.7.1 applies only to 

additions that increase the building footprint or affect the irrigation 

system.

801.3 A minimum of one food waste disposer is installed at the 

primary kitchen sink. 

801.4 (1&2) 1) The total showerhead flow rate at any point in time, 

for all showerheads in each shower compartment is less than 2.5 

gpm, tested at 80 psi per ASME A112.18.1/CSA B125.1. 2) In 

addition the showerheads must be equipped with an automatic com

(1) a bathroom (Points awarded for each bathroom.)

(2) all lavatory faucets in the home meet the conditions of 801.5.1

Addition Note: Section 801.5.1 applies only to additions that include 

a bathroom.

Renovation Note: Section 801.5.1 applies only to renovations of 

existing bathrooms.

(4) Drip emitters

Addition and Renovation Note: Section 801.6 applies only to 

additions and renovations that include bathrooms. 

801.7 Irrigation systems 

(5) Soaker hose

(6) Subsurface irrigation

1) designed by a professional in accordance with EPA WaterSense 

requirements or equivalent

801.7.2 Irrigation system is in accordance with both of the following: 

Renovation Note: Section 801.7.1 applies only to renovations of the 

landscape, hardscape, or outdoor living areas with existing irrigation 

systems or to renovations that replace the irrigation system.

2) installed in accordance with EPA WaterSense program or 

equivalent 

(1) High distribution uniformity (DU) rotating spray heads

(3) Bubblers

(2) Drip irrigation

Addition Note: Section 801.7.2 applies to additions that increase the 

building footprint or modify an existing irrigation system.

Renovation Note: Section 801.7.2 applies to renovations with 

existing irrigation systems that are modified, or to renovations where a 

new irrigation system is installed or the existing irrigation system is 

replaced.

Addition Note: Section 801.7.3 applies to additions that increase the 

building footprint or affect the irrigation system.

Renovation Note: Section 801.7.3 applies only to renovations with 

existing irrigation systems that are modified, or to renovations where a 

new irrigation system is installed or the existing irrigation system is 

replaced.

801.7.3 Irrigation system is zoned separately for turf and bedding 

areas.

801.5.2 Self-closing valve, motion sensor, metering, or pedalactivated faucet is installed to enable intermittent on/off operation. 

(Points awarded per fixture.)

Renovation Note: Additional points for Section 801.5.2 apply where 

installed.

Renovation Note: Renovations that do not include bathrooms 

receive points for replacing exisiting water closets with water closets 

in accordance with Section 801.6 (Points awarded per fixture.)

4) All water closets and all urinals are in accordance with Section 

801.6(2) or Section 801.6(3), as applicable. 

(3) A urinal is installed with a flush volume of 0.5 gallons or less 

when tested in accordance with ASME A112.19.2.

(1) Gold and Emerald Levels: All water closets and urinals are in 

accordance with either Section 801.6 or 802.2.

(3) Replace existing washing machine with a water factor of 6.0 or 

less

(2) Replace existing washing machine

Addition and Renovation Note: Section 801.2 applies as follows 

when existing appliance(s) are properly disposed of and not placed 

into secondary service in a dwelling unit. 

(1) Replace existing dishwasher

801.4 (3&4) All shower compartments in the home comply with 

801.4 (1&2).

801.6 Water closets and urinals. Water closets and urinals are in 

accordance with the following: (For water closets, points awarded 

for either Section 801.6 or 802.2, but not both.)

(2) A water closet is installed with an effective flush volume of 1.28 

gallons or less when tested in accordance with ASME A112.19.2 (all 

water closets) and ASME A112.19.14 (all dual flush water closets), 

and is in accordance with EPA WaterSense Tank-Typ

Addition Note: Section 801.4 applies only to additions that include a 

minimum of one bath or shower.

801.5.1 Water-efficient lavatory faucets with 1.5 gpm or less 

maximum flow rate when tested at 60 psi in accordance with ASME 

A112.18.1 are installed.

Renovation Note: Section 801.4 applies only to renovations that 

include one or more bathrooms with a bath or shower. (Points 

awarded per fixture.)

Addition and Renovation Note: Existing showerhead is replaced 

with a showerhead that has a flow rate in accordance with Section 

801.4. (Points awarded per additional showerhead.)

801.4 Showerheads

Page 17 of 25
APPENDIX B 257

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

4

15

15 0

6 6 382 

2

2 0 Distritution by gravity.

1

4 Points 

(per fixture)

10

2 Add'l Pts

5 Add'l Pts

24 Points Max

Mandatory

8

8 Add'l Points

2

Base Pts. 71 0 3 0 25 207 36 650 22 1,830 Ch. 9 Subtotal 

Cost/Point 0 0 8 18 83 

5

Furnace and water heater are electric.

Mandatory 

Mandatory 

2 Additional 

Points

5

5

2 Additional 

Points

Electric appliances.

5

3

5

2 Additional 

Points

2

5 5

7

4

6

6

901.2.1(2)(c) Wood stove and fireplace inserts, as defined in UL 

1482, Section 3.8 are in accordance with the certification 

requirements of UL 1482 and are in accordance with the emission 

requirements of the EPA Certification and the State of Washington W

 (b) Direct vent water heater

901.2.1(2)(b) Factory-built wood burning fireplaces are in accordance 

with the certification requirements of UL 127 and are EPA certified.

Renovation Note: Section 901.1.3 applies to renovations that replace 

existing space heating and water heating combustion equipment with 

equipment in accordance with Section 901.1.3 for new construction.

901.1.4 The following electric equipment is installed:

1) Heat pump air handler in unconditioned space

2) Heat pump air handler in conditioned space 

901.2.1(1) Natural gas and propane fireplaces that are power vented 

or direct vented, are equipped with permanently fixed glass fronts or 

gasketed doors, and comply with ANSI Z21.88/CSA 2.33a or ANSI 

Z21.50/CSA 2.22 

901.2 Fireplaces and Fuel Burning Appliances (except cooking 

appliances, clothes dryers, water heaters, and furnaces) located in 

conditioned space are code compliant, vented to the outdoors, and 

have adequate combustion and ventilation air provided to minimize 

spillage or back-drafting, in accordance with the following: All of the 

following items are mandatory, if applicable, for certification.

901.2.1(2)(a) Wood burning fireplaces are equipped with gasketed 

doors designed to operate with the doors closed, outside combustion 

air, and a means is provided for sealing the flue to minimize interior 

air (heat) loss when not in operation.

901.1.3 The following combustion space heating and water heating 

equipment is installed within conditioned space. 

(1) Direct vent furnace or boiler

(2) (a) Power vent water heater

901.1.1 Natural draft space heating or water heating equipment is not 

located in conditioned spaces, including conditioned crawl spaces. 

Natural draft equipment is permitted to be installed within the 

conditioned spaces if located in a mechanical room that has an 

outdoor air source, and is otherwise sealed and insulated to separate 

it from the conditioned space(s).

Addition Note: Section 901.1.1 applies to additions that include the 

use of natural draft space heating or water heating equipment.

901.1.2 Air handling equipment or return ducts are not located in the 

garage, unless placed in isolated, air-sealed mechanical rooms with 

an outside air source. 

Renovation Note: Section 901.1.1 applies to renovations that include 

areas where natural draft space heating or water heating equipment is 

located.

Renovation Note: Additional points are available for any renovation 

that modifies all of the existing building's natural draft space heating 

or water heating equipment in accordance with Section 901.1.1

Renovation Note: Section 901.1.2 applies to renovations that modify 

existing duct systems.

CHAPTER 9: INDOOR ENVIRONMENTAL QUALITY

901 Pollutant Source Control

901.0 Intent. Pollutant sources are controlled. 

901.1 Space and water heating options

(1) Excess Water Flow Shutoff

(2) Leak Detection System

802.3 Automatic shutoff water devices. One of the following 

automatic shutoff water supply devices is installed. Where a fire 

sprinkler system is present, installer is to ensure the device will not 

interfere with the operation of the fire sprinkler system

1) Gold and emerald levels: All water closets and urinals are in 

accordance with either Section 802.2 or Section 801.6. 

2) Composting or waterless toilet and/or urinal is installed. (Points 

awarded per fixture)

(1) Rainwater is collected and used 

(2) Rainwater is distributed using a renewable energy source or 

gravity.

801.9 Water Filters. Water filter is installed to improve water quality 

for the whole building or whole dwelling unit.

802.1 Gray water (as specified in ICC IRC, Appendix O) is separated 

and reused, as permitted by local building code. (Points awarded for 

either Section 802.1(1) or 802.1(2), not both)

(2) Soil moisture sensor based irrigation controller

3) All toilets and urinals are in accordance with Section 802.2 (2). 

(1) Each water closet flushed by reclaimed or recycled water.

(2) Irrigation from reclaimed or recycled water onsite

802.2 Composting or waterless toilets and/or urinals. Composting 

or waterless toilets and/or urinals are in accordance with the 

following: (For water closets, points awarded for either Section 

802.2 or 801.6, but not both) 

Addition and Renovation Note: Additional points are available for 

Section 802.1 as follows: 

2) irrigation from reclaimed or recycled water onsite

1) each water closet flushed by reclaimed or recycled water

(3) No irrigation is installed and a landscape plan is developed in 

accordance with Section 503.5(1) as applicable. (Points must be 

taken in 503.5(1) in order to receive points for 801.7.4(3)

801.8 Rainwater collection and distribution is provided.

801.7.4 The irrigation system(s) is controlled by a smart controller: 

(1) Evapotranspiration (ET) based irrigation controller with a rain 

sensor 

Page 18 of 25
258 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

6

6

2 Add'l Pts

2 Add'l Pts

2 Add'l Pts

7 7

Mandatory 

2 Points

Mandatory 

2 Points

4

10 10

Mandatory 

1 Add'l 

Point

3 Add'l 

Points

10 points 

max.

Mandatory

0

Meets.

2 Points per 

Product Group

2 Points per 

Product Group

3 Points per 

Product Group

4 Points per 

Product Group

4 0 Interior doors and trim.

4 Points per 

Product Group

2 Add'l Pts

Mandatory

0

6

BR & LR have carpet & pad - rebound is 

recycled.

2

2

2 Add'l Pts

2 Add'l Pts

0 Add'l Pts

1 Add'l Pts

6

6 specifications list only carpet and ceramic tile

4

4 941 Specify insulation, gypsum board and paints 

with low VOC and low emmitting products. 

Cost covers paperless drywall and low VOC 

paint. Insulation should be at n/c.

Renovation Note: Section 901.3 applies to renovations that involve 

construction adjacent to an attached garage.

Renovation Note: A focused effort to create a continuous air barrier 

between the garage and conditined space, including penetrations, 

occurring between walls and ceilings separating the garage and 

conditioned space.

(4) Particleboard, MDF, or hardwood plywood is in accordance with 

CPA 2.

Renovation Note: Additional points for Section 901.4 apply to 

renovations that replace all existing countertops, shelving, and other 

nonstructural products.

(3) Hardwood plywood is in accordance with HPVA HP-1 and HUD 

Title 24, Part 3280.

(5) Composite wood or agrifiber panel products contain no added ureaformaldehyde or are in accordance with the CARB Composite Wood 

Air Toxic Contaminant Measure Standard.

(6) Non-emitting products. 

901.4(1) Structural plywood used for floor, wall, and/or roof sheathing 

is compliant with DOC PS 1 and/or DOC PS 2. OSB used for floor, 

wall, and/or roof sheathing is compliant with DOC PS 2. The panels 

are made with moisture-resistant adhesives. The trademark indicates 

these adhesives as follows: Exposure 1 or Exterior for plywood, and 

Exposure 1 for OSB. 

901.4(2-6) Wood Materials. A minimum of 85% of material within a 

product group (i.e. wood structural panels, countertops, composite 

trim/doors, custom woodwork, and/or component closet shelving) is 

manufactured in accordance with the following: 

(2) Particleboard and MDF (medium density fiberboard) is 

manufactured and labeled in accordance with CPA A208.1 and CPA 

A208.2, respectively.

901.7 Wall coverings. A minimum of 85% of wall coverings are in 

accordance with the emission concentration limits of CDPH 01350 

(using the office scenario), as certified by a third-party program, such 

as the Scientific Certification Systems (SCS) Indoor Advantage Gold 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program. 

(c) Carpet adhesives

901.6 Hard-surface flooring. A minimum of 85% of installed hardsurface flooring is in accordance with the emission concentration 

limits of CDPH 01350 (using the office scenario), as certified by a 

third-party program, such as the RFCI's FloorScore Indoor Air 

Certification Program or the Greenguard Environmental Institute's 

Children and Schools Certification Program. 

Renovation Note: Section 901.5(2) applies to renovations where 

existing carpet is replaced. Remove existing carpet and perform one 

of the following repair methods:

1) Existing carpeted floor area is exposed, cleaned, and finished and 

is used as non-carpeted finished floor.

2) Carpet is installed in accordance with Section 901.5.

3) New non-carpet flooring product in compliance with an approved 

green labeling program(s) is installed.

901.5(2) A minimum of 85% of installed carpet area, carpet cushion 

(padding), and carpet adhesives are in accordance with the emission 

levels of CDPH 01350, as certified by a third-party program, such as 

the Carpet and Rug Institute’s (CRI) Green Label Pl

(a) Carpet

(b) Carpet cushion

901.5 Carpets are in accordance with the following:

901.5(1) Wall-to-wall carpeting is not installed adjacent to water 

closets and bathing fixtures .

901.3(1)(b) A continuous air barrier is provided between walls and 

ceilings separating the garage space from the conditioned living 

spaces. 

901.3(1)(c) For one and two-family dwelling unit attached garages, a 

100 cfm or greater ducted, or 70 cfm or greater unducted wall 

exhaust fan is installed and vented to the outdoors, designed and 

installed for continuous operation, or has controls (e.g., motion 

detectors, pressure switches) that activate operation for a minimum 

of 1 hour when either human passage door or roll-up automatic doors 

are operated. For ducted exhaust fans, the fan airflow rating and duct 

sizing are in accordance with Appendix A. (If you claim points for 

901.3(1)(c), you cannot claim points for 901.3(2). 

901.3(2) A carport is installed, the garage is detached from the 

building, or no garage is installed. (If you claim points for 901.3(2), 

you cannot claim points for 901.3(1)(a), 901.3(1)(b), or 901.3(1)(c).

Addition Note: Section 901.3 applies where the addition is a garage 

or shares a continuous air barrier with a garage.

901.3 Garages are in accordance with the following:

Renovation Note: Additional points are available for removing or 

rendering permanently unusable each existing wood-burning fireplace 

that is not in accordance with Section 901.2.1(2)(a) in areas other 

than the main renovation area.

901.3(1)(a) Where installed in the common wall between the 

attached garage and conditioned space, the door is tightly sealed and 

gasketed. 

901.2.1(2)(d) Pellet (biomass) stoves and furnaces are in accordance 

with the requirements of ASTM E1509 or are EPA Certified. 

Renovation Note: Removal of or rendering permanently unusable an 

existing fireplace and/or other fuel-burning appliances that are not in 

accordance with Section 901.2.1.

Renovation Note: Additional points are awarded for the replacement 

of each existing fireplace that is not in accordance with Section 

901.2.1 with a fireplace that is in accordance with Section 901.2.1

901.2.1(2)(e) Masonry heaters are in accordance with the definitions 

in ASTM E1602 and ICC IBC, Section 2112.1. 

901.2.2 Fireplaces, woodstoves, pellet stoves, or masonry heaters 

are not installed. 

Page 19 of 25
APPENDIX B 259

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

5

5 (5) can only achieve 8 pts max. so when 

upgrading paint to CDPH, loose 3 pts here

8

8 0 Specify low Voc paints. See cost in 901.6

Mandatory 

1 Add'l Point

5

5

108 Case adhesive - add to base.

8 Case caulk - add to base.

5

5 0

5

2

2 0 -2 0

3

5

5 0 Require better specs on cabinets.

2 Add'l Pts

4

4 0 Insulation can be respec'd to meet this 

criteria.

1

1 0 Specify.

3

3

1

1 44

1

1

Mandatory

901.14 Non-smoking areas. All interior common areas of a multi-unit 

building are designated as non-smoking areas with posted signage.

902 Pollutant Control

902.0 Intent. Pollutants generated in the building are controlled. 

902.1.1 Spot ventilation is in accordance with the following:

901.15 Renovation Note: For buildings constructed prior to 1978, 

lead-safe work practices are used during renovation, remodeling, 

painting, and demolition.

901.12 A carbon monoxide (CO) alarm is installed in a central 

location outside of each separate sleeping area in the immediate 

vicinity of the bedrooms. The CO alarm(s) is located in accordance 

with NFPA 720 and is hard-wired with a battery back-up. The alarm 

device(s) is certified by a third party for conformance with either CSA 

6.19 or UL 2034.

901.13 Building entrance pollutants control. Pollutants are controlled 

at all main building entrances by one of the following methods: (can 

only use one method)

(1) Exterior grilles or mats are installed in a fixed manner and may be 

removable for cleaning. 

(2) Interior grilles or mats are installed in a fixed manner and may be 

removable for cleaning. 

901.11 Insulation is in accordance with the following: 

(1) Formaldehyde emissions of wall, ceiling, and floor insulation 

materials are in accordance with the emissions levels of CDPH 

01350, as certified by a third-party program, such as the 

GREENGUARD Environmental Institute's Children and Schools 

Certification Program or theScientific Certifications Systems (SCS) 

Indoor Advantage Gold Program.

(2) Formaldehyde emissions of duct insulation materials are in 

accordance with the emissions levels of CDPH 01350, as certified by 

a third-party program, such as the GREENGUARD Environmental 

Institute's Children and Schools Certification Program or the Scientific 

Certifications Systems (SCS) Indoor Advantage Gold Program.

(2) Kitchen and bath vanity cabinets in accordance with CARB 

Composite Wood Air Toxic Contaminant Measure Standard are 

installed. 

(3) Kitchen and bath vanity cabinets are installed that contain no 

added urea formaldehyde or are in accordance with 

GGPS.EC.010.R0, ASTM D6670, or equivalent. 

Renovation Note: Additional Points for Section 901.10 apply to 

renovations that replace all existing kitchen and bath vanity cabinets. 

(2) GS-36

901.10 Cabinets. A minimum of 85% of kitchen and bath vanity 

cabinets are in accordance with one of the following: (Where more 

than one of the following practices is used, the practice with the 

fewer number of points is awarded)

(1) Kitchen and bath vanity cabinets in accordance with KCMA ESP 

01, or equivalent, are installed.

901.9.2 Interior Low-VOC Adhesives and Sealants. For interior low 

VOC adhesives and sealants, a minimum of 85% of site-applied 

products used within the interior of the building are in accordance 

with one of the following, as applicable:

1) CDPH 01350, as certified by a third party program, such as 

Scientific Certification Systems (SCS) Indoor Advantage Gold 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program.

c) The VOC content of all other caulks and sealants not to exceed 2% 

by weight or 30 grams/liter, whichever is greater.

(d) The VOC content of contact adhesives not to exceed 55% by 

weight or 480 grams/liter, whichever is greater.

(2) GS-36

a) Construction Adhesives: VOC content not to exceed 7% by weight 

or 75 grams/liter, whichever is greater. 

b) The VOC content of reactive sealants (i.e., silicones, 

polyurethanes, and hybrids, such as MS Polymer and silylated 

polyurethane resin or SPUR) not to exceed 4% by weight or 50 

grams/liter, whichever is greater.

901.9.1 For exterior low-VOC adhesives and sealants, a minimum of 

85% of site-applied products used for the installation of subfloors and 

on the exterior of the project are in accordance with one of the 

folllowing: 

(1) The California Air Resources Board consumer products regulation 

as follows: 

(d) 550 grams/liter clear wood lacquer 

901.8.2 Site-applied interior products are in accordance with the 

emissions levels of CDPH 01350, as certified by a third party program 

such as the Scientific Certification Systems (SCS) Indoor Advantage 

Gold Program or the Greenguard Environmental Institute's Children 

and Schools Certification Program.

Addition and Renovation Note: Section 901.8 applies when the 

building is occupied during construction.

901.9 Adhesives and Sealants. 

(b) 100 grams/liter non flat

(c) 350 grams/liter clear wood varnish

(4) VOC limits in accordance with:

(a) 50 grams/liter flat 

(2) CARB Suggested Control Measure for Architectural Coatings 

(3) GS-11

901.8.1 Site-applied interior products are in accordance with one or 

more of the following: 

(1) Zero VOC, determined by EPA Method 24 (VOC content below 

the detection limit for the method). 

901.8 Architectural coatings. A minimum of 85% of the architectural 

coatings are in accordance with one of the following conditions:

Page 20 of 25
260 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

0 Complies.

Mandatory 0 Complies.

8

8 See also 904.2

Mandatory 

Mandatory 

2 Add'l Pts

3 Add'l Points

1 Add'l Pts

9 Points Max

5 5 42 timer

2 2 42 timer

8

8 149 2 field personnel 2 hours.

Max. 6 

Points

2

3

6 tech spec pg 10. E* and 0.8 sone

8

10

10 345

15

17

0 Add'l Pts

1 Add'l Pts

2 Add'l Pts

8

3

3 0

0 Add'l Pts

1 Add'l Pts

Mandatory

0

10

15

10

3

3 35

0 Add'l Pts

902.4 HVAC system protection. One of the following HVAC system 

protection measures is performed: 

(1) HVAC supply registers (boots), return grilles, and rough-ins are 

covered during construction activities to prevent dust and other 

pollutants from entering the system. 

Addition and Renovation Note: Section 902.4(1) does not apply to 

additions and renovations except as noted in Addition and Renovation 

Note (3) below.

(b) An active radon system is installed.

902.3(2) Buildings located in Zone 2. 

(a) A passive radon system is installed. 

Addition Note: Section 902.2.3 applies only to additions that include 

a new HVAC system.

902.3 Radon control. Radon control measures are in accordance 

with ICC IRC Appendix F. (Zones are defined in Figure 9(1). 

902.3(1) Buildings located in Radon Zone 1 have a radon system 

installed.

(a) A passive radon system is installed. 

Renovation Note: Section 902.2.3 applies only to renovations that 

replace an existing HVAC system.

(3) Heat-recovery ventilator.

(4) Energy-recovery ventilator.

902.2.2 Ventilation airflow is tested to achieve the design fan airflow 

at point of exhaust in accordance with Appendix B. (Points must be 

claimed in 902.2.1 to claim points in 902.2.2) 

902.2.3 MERV filters 8 or greater are installed on central air systems. 

Designer or installer is to verify that the HVAC equipment is able to 

accommodate the greater pressure drop of MERV 8 filters. 

2) If the pressure and thermal boundaries of the addition are not 

separated from the existing building, Section 902.2.1 is applied to the 

whole building.

Renovation Note: Section 902.2.1 applies to the whole building for 

connected thermal and pressure boundaries.

Addition Note: Section 902.2.1 is applied to an addition in 

accordance with one of the following:

1) The pressure and thermal boundaries of the addition are separated 

from the existing building.

(1) Exhaust or supply fan(s) ready for continuous operation and with 

appropriately labeled controls.

(2) Balanced exhaust and supply fans with supply intakes located in 

accordance with the manufacturer's guidelines to not introduce 

polluted air back into the building. 

2) for each additional device

902.1.4 Exhaust fans are ENERGY STAR as applicable. 

902.1.3 Kitchen range, bathroom, and laundry exhaust are verified to 

specification. Ventilation airflow at the point of exhaust is tested to a 

minimum of 100 cfm intermittent or 25 cfm continuous for kitchens, 

and 50 cfm intermittent or 20 cfm continuous 

(1) ENERGY STAR, or equivalent, fans (Points awarded per fan) 

(2) ENERGY STAR, or equivalent, fans operating at or below 1 sone 

(Points awarded per fan)

902.2. Building ventilation systems. 

902.2.1 One of the following whole building ventilation systems is 

implemented and is in accordance with the specifications of Appendix 

B. (Points must be claimed in 902.2.1 to claim points in 902.2.2.

(1) Bathrooms (including powder rooms) are vented to the outdoors. 

The minimum ventilation rate is 50 cfm for intermittent operation or 

20 cfm for continuous operation in bathrooms. 

(2) Clothes dryers are vented to the outdoors. 

(3) Kitchen exhaust units and/or range hoods are ducted to the 

outdoors and have a minimum ventilation rate of 100 cfm for 

intermittent operation or 25 cfm for continuous operation. 

1) for first device

902.1.2 Bathroom and/or laundry exhaust fan is provided with an 

automatic timer and/or humidistat: 

Addition Note: Section 902.1 applies only to additions that include a 

kitchen or bathroom. 

Renovation Note: Section 902.1 applies to renovations that include a 

new or existing kitchen or bathroom. (Points available for all 

of the following conditions)

1) Existing non-vented kitchen range or bathroom exhaust systems in 

an area that is undergoing renovation are replaced with equipment 

that is in accordance with Section 902.1.

2) Existing non-vented kitchen range or bathroom exhaust systems in 

an area that is not undergoing renovation are replaced with equipment 

that is in accordance with Section 902.1.

3) New kitchen range or bathroom exhaust systems in accordance 

with Section 902.1 are installed where no exhaust system existed 

before renovation.

Page 21 of 25
APPENDIX B 261

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

3

Mandatory

1 Add'l Pt

1 Add'l Pt

1 Add'l Pt

5

2

2 127

2 2

2 2

2 2

Mandatory

0

Mandatory 0

3

Mandatory 

0 Add'l Pts

6

Mandatory

0

1 Add'l Pt

2 Add'l Pts

10

8

1 Add'l Pt

2 Add'l Pts

2 Points 

2

Mandatory 

2 Points

2 Include site superintendent's provision to test 

and record moisture in wall cavity prior to 

hanging drywall.

903.4.1(2) Walls are not enclosed (e.g. with drywall) if the insulation 

has a high moisture content. Wet insulation products are dry before 

enclosing. 

(2) Prior to owner occupancy, HVAC supply registers (boots), return 

grilles, and duct terminations are inspected and vacuumed. In 

addition, the coils are inspected and cleaned and the filter is replaced 

if necessary. 

902.5 Central vacuum systems. Central vacuum system is installed 

and vented to the outside.

Addition and Renovation Note: As an alternative to Section 

902.4(2), one of the following options is implemented: 

903.3.1(2) Damp-proof walls are provided below finished grade. 

Joints of vapor retarder overlap a minimum of 6 inches and are taped.

(2) 6-mil polyethylene sheeting, lapped a minimum of 6 inches and 

taped at the seams. 

903.4 Moisture control measures. 

903.4.1(1) Building materials with visible mold are not installed or are 

cleaned or encapsulated prior to concealment and closing.

Addition Note: Section 903.3.2 applies only to the new construction 

portion of additions.

Renovation Note: Section 903.3.2 applies only to renovations that 

include a focused effort to convert an existing vented crawl space into 

an unvented, conditioned crawl space.

903.3.2 Crawlspace that is built as a conditioned area is sealed to 

prevent outside air infiltration and provided with conditioned air at a 

rate not less than 0.02 cfm per square foot of horizontal area and one 

of the following is implemented:

(1) A concrete slab over lapped 6 mil polyethylene or polystyrene

b. In Dry climate locations, as defined by Figure 6(1), polyethylene 

sheeting is not required unless required for radon resistance (Section 

902.3).

903.2.2 Add a capillary break on footing to prevent moisture migration 

into foundation wall. 

903.3.1(1) Minimum 6-mil vapor retarder installed on the crawl space 

floor and extended up the wall sufficient to allow the material to be 

affixed with glue and furring strips. Joints of vapor retarder overlap a 

minimum of 6 inches and are taped.

2) Additional points available for installing a footing drainage system.

1) Additional points available for damp proofing below grade walls.

Renovation Note: Additional Points:

Addition Note: Section 903.2 applies only to the new construction 

portion of additions.

Renovation Note: Section 903.2 applies only to renovations that 

include slab removal and/or replacement.

903.3 Crawlspaces

1) During construction, a construction indoor air quality (IAQ) 

schedule is developed that includes, at a minimum, all of the 

following: 

a) type of construction activity

b) ability to occupy the building or dwelling unit

c) IAQ protections for occupant(s) of the building or dwelling unit

(b) Wall

(c) Floors

2) The addition or renovation area is sealed off from the occupied 

portion of the building or dwelling unit. The same HVAC system for 

conditioning the air in renovated and occupied space is not used. 

d) hazardous waste removal

e) name and age of occupants of the building or dwelling unit at a 

specific time

3) The building or dwelling unit is not occupied during the entire 

construction period and Sections 902.4(1) and 902.4(2) are 

implemented.

902.6 Living space contaminants. The living space is sealed to 

prevent unwanted contaminants.

(1) Attic access, knee wall door, or drop down stair is caulked, 

gasketed, or otherwise sealed. 

(2) All penetrations (e.g., top plates, HVAC register boots, recessed 

can lights, are sealed in the following areas:

903.2.1 A capillary break and vapor retarder are installed at all 

concrete slabs in accordance to the following:

1) A minimum 4-inch thick bed of 1⁄2 inch diameter or greater clean 

aggregate, covered with polyethylene or polystyrene sheeting in direct 

contact with the concrete slab, with the sheeting joints lapped in 

accordance with Section 903.3. (or)

903.2 Capillary breaks

903 Moisture Management: Vapor, Rainwater, Plumbing, HVAC

Modification for 1&2:

903.0 Intent. Moisture and moisture effects are controlled. 

903.1 Tile backing materials installed under tiled surfaces in wet 

areas are in accordance with ASTM C1178, C1278, C1288, or 

C1325. 

2) A minimum 4-inch thick uniform layer of sand, overlain with a 

layer or strips of geotextile drainage matting, covered with 

polyethylene sheeting, with the sheeting joints lapped according to 

Section 903.3.

(a) Attic/ceiling

a. In areas with free-draining soils, identified as Group 1 in the ICC 

IRC by a certified hydrologist, soil scientist, or engineer through a site 

visit, a gravel bed or geotextile matting is not required.

Page 22 of 25
262 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

4 0 Include in site superintendent's responsibilities

2

2 0 Include in the installers scope.

Mandatory

2 Add'l Pts

2

2 

Mandatory 

Mandatory

3 Add'l 

Points

2 Add'l Pts

2

1 Add'l Pt

2 Add'l Pts

5 5 0 Install pipes in conditioned space

2 Add'l Pts

Mandatory

0

2

2

Mandatory

2 Add'l Pts

2 Add'l Pts

3 Add'l 

Points

8 Points 

8 374

2

2 72

2

2 400 See 902.2.1(2) for make up air.

Mandatory 

1 

2

Base Pts.

1 0 8 950 6 94 0 0 0 0 Ch. 10 Subtotal 

1 point per 2 

items

0 100 Estimated 40 hours staff. O/H removed for 

separate reporting as one time cost. This 

reflects staff time to assemble.

Stand alone unit with hard drain. Cost should 

cover a dehumidification controller and multispeed blower for central unit that is rightsized.

CHAPTER 10: OPERATION, MAINT., AND BUILDING OWNER 

EDUCATION

Building Owners’ Manual for One- and Two-Family Dwellings

(Points awarded for mandatory and non-mandatory items)

Addition Note: Section 903.4.2 applies only where new finish flooring 

is applied.

Renovation Note: Section 903.4.2 applies only where new finish 

flooring is applied. Additional points available only for correcting 

excess moisture levels in an existing subfloor and/or substrate.

903.4.1(3) The moisture content of lumber is sampled to ensure it 

does not exceed 19 % prior to the surface and/or wall cavity 

enclosure. 

903.4.2 Moisture content of subfloor, substrate, or concrete slabs is 

in accordance with the appropriate industry standard for the finish 

flooring to be applied. 

Addition and Renovation Note: Section 903.4.1 (1) and (2) applies 

to new, reused, and salvaged materials only. It excludes undisturbed 

existing materials.

(2) Central HVAC system equipped with additional controls to operate 

in dehumidification mode.

904.3 Renovation Note: Existing unsealed combustion gas dryer 

vents related to renovations.

2) Existing unsealed combustion gas dryer vent is replaced with a 

sealed exhaust vent and ducted makeup air is provided.

1) Existing unsealed combustion gas dryer vent is replaced with a 

sealed exhaust vent.

904 Innovative Practices

904.1 A humidity monitoring system is installed with a mobile base 

unit that displays a reading of temperature and relative humidity at the 

base unit with a minimum of two remote units. One remote unit that 

is placed permanently inside the conditioned space in a central 

location, excluding attachment to exterior walls, and another remote 

unit is placed permanently outside of the conditioned space.

904.2 Kitchen exhaust unit(s) that equal or exceeds 400 cfm, and 

make-up air is provided.

1001.0 Intent. Information on the building’s use, maintenance and 

green components is provided. 

1) areas that include replacement or disturbance of HVAC ducts, 

plenums and trunk

2) in areas with specific condensation problems, remove any 

contaminated ductwork, remove or remediate mold-contaminated 

elements, and correct existing or add new insulation.

903.7 Relative Humidity. In climate zones 1A, 2A, 3A, 4A, and 5A as 

defined by Figure 6(1), equipment is installed to maintain relative 

humidity (RH) at or below 60% using one of the following: 

903.9.1 In “Warm-Humid” climates as defined by Figure 6(1) 

equipment is installed to maintain Relative Humidity (RH) at or below 

60% using one of the following:

3) insulation on the existing HVAC ducts, plenums and trunks is 

upgraded

(1) Additional dehumidification system(s)

903.5 Plumbing. 

903.5.1 Plumbing distribution lines are not installed in exterior wall 

cavities.

903.5.2 Cold water pipes in unconditioned spaces are insulated to a 

minimum of R-4 with pipe insulation or other covering that adequately 

prevents condensation.

Addition Note: Section 903.5.1 applies only to the new construction 

portion of additions.

Renovation Note: Section 903.5.1 applies only to renovations that 

include exterior walls and plumbing lines or plumbing lines in 

unconditioned spaces.

1) A minimum of 50 percent of exterior wall piping is removed.

2) A minimum of 50 percent of exterior wall piping is insulated.

2) Plumbing in unconditioned spaces is improved.

1001.1 A homeowner’s binder is provided that includes the following, 

as available and applicable:

Addition Note: Section 903.6 applies only to the new construction 

portion of additions.

Renovation Note: Section 903.6 applies to renovations as follows: 

903.6(1) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated to a 

minimum of R-6. Outdoor air supplies to ventilation systems are 

insulated to a minimum of R-6.

903.6(2) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated to a 

minimum of R-8. Outdoor air supplies to ventilation systems are 

insulated to a minimum of R-8.

5) drain, waste, and vent system is not in accordance with the ICC 

IPC.

4) lead or other toxic solders

Renovation Note: The entire plumbing system between the 

connections of the water distribution and/or waste lines and the 

equipment and fixtures is replaced. This item applies if one or more of 

the following conditions exist: 

1) poor joint connections

2) thin pipe walls

3) severely reduced water flow caused by debris buildup

Renovation Note: The entire plumbing system between the 

connections of the water distribution and/or waste lines and the 

equipment and fixtures is replaced. This item applies if one or more of 

the following is implemented: 

1) Plumbing in unconditioned spaces is repaired or replaced.

903.5.3 Plumbing is not installed in unconditioned spaces.

Page 23 of 25
APPENDIX B 263

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

0.5 850 $200 certification fee and 4 hours of 

professional time.

Mandatory

0.5 Included with 1001.1

Mandatory

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

Mandatory

Building Operation And Maintenance for One6

6 94 Walk thru orientation should take about 2 

hours and be standard.

(1) HVAC filters.

(2) Thermostat operation and programming.

(3) Lighting controls.

(4) Appliances and settings.

(5) Water heater settings.

(6) Fan controls.

1003 Construction, Operation and Maintenance 

Manuals and Training for Multi-Unit Buildings

1

Mandatory

Mandatory

Mandatory

(4) Record drawings of the building.

0

(3) the EPA publications “Reducing Lead Hazards When Remodeling 

Your Home” and “Asbestos in Your Home: A Homeowner’s Guide”

(8) A photo record of framing with utilities installed. Photos are taken

prior to installing insulation and clearly labeled.

1003.2 Operations manual. Operations manuals are created and

distributed to the responsible parties in accordance with Section

1003.0. Between all of the operation manuals, five or more of the

following options are included.

all mandatory items listed in Section 1003.1

1003.0 Intent. Manuals are provided to the responsible parties 

(owner, management, tenant, and/or maintenance team) regarding 

the construction, operation, and maintenance of the building. Paper or 

digital format manuals are to include information regarding those 

aspects of the building’s construction, maintenance, and operation 

that are within the area of responsibilities of the respective recipient. 

One or more responsible parties are to receive a copy of all 

documentation for archival purposes.

1003.1 Building construction manual. A building construction

manual, including five or more of the following, is compiled and

distributed in accordance with Section 1003.0.

a minimum of two of the non-mandatory items listed in Section 

1003.1

(1)A narrative detailing the importance of constructing a green 

building, including a list of green building attributes included in the 

building. This narrative is included in all responsible parties’ manuals.

(2) A local green building program certificate as well as a copy of the

National Green Building Standard TM , as adopted by the Adopting

Entity, and the individual measures achieved by the building.

(3)Warranty, operation, and maintenance instructions for all

equipment, fixtures, appliances, and finishes.

(5) A record drawing of the site including stormwater management

plans, utility lines, landscaping with common name and

genus/species of plantings.

(6) A diagram showing the location of safety valves and controls for

major building systems.

(7) A list of the type and wattage of light bulbs installed in light

fixtures.

Addition and Renovation Note : A building construction manual 

that includes the following:

(13) Maintenance checklist.

1002.1 Training of building owners. Building owners/occupants are

familiarized with the green building goals and strategies implemented

and the impacts of the occupants’ practices on the costs of operating

the building. Training is provided to the responsible party(ies)

regarding all equipment operation and control systems. Systems

include, but are not limited to, the following:

(14) List of common hazardous materials often used around the 

building and instructions for proper handling and disposal of these 

materials.

(15) Information about organic pest control, fertilizers, de-icers, and 

cleaning products.

(16) Information about native landscape materials and/or those that 

have low-water requirements.

(17) Information about methods of maintaining the building’s relative 

humidity in the range of 30-60%.

(18) Instructions for inspecting the building for termite infestation.

(19) Instructions for maintaining gutters and downspouts and 

importance of diverting water at least five feet away from foundation.

(10) Where frost protected shallow foundations are used, notify owner 

of precautions, including instructions not to remove or damage 

insulation when modifying landscaping, to provide heat to the home 

as required by the IRC/IBC, and to keep base materials 

(11) A list of local service providers that offer regularly scheduled 

service and maintenance contracts to assure proper performance of 

equipment and the structure (e.g., HVAC, water heating equipment, 

sealants, caulks, gutter and downspout system, showe

(12) A photo record of framing with utilities installed. Photos taken 

prior to installing insulation, clearly labeled, and included as part of 

the homeowner’s binder.

(6) Explanation of the benefits of using energy efficient lighting 

systems (e.g., compact fluorescent light bulbs, light emitting diode 

(LED)) in high usage areas.

(7) A list of practices to conserve water and energy.

(20) A narrative detailing the importance of maintenance and 

operation in retaining the attributes of a green-built building.

Renovations Note: A building owners’ manual that includes the 

following:

(1) all mandatory items listed in Section 1001.1

(1) A green building program certificate or completion document.

(8) Local public transportation options (if applicable).

(9) A diagram showing the location of safety valves and controls for 

major building systems.

(2) List of green building features (can include the national green 

building checklist).

(3) Product manufacturer’s manuals or product data sheet for 

installed major equipment, fixtures and appliances. If product data 

sheet is in the binder, manufacturer’s manual shall may be attached 

to appliance in lieu of inclusion in the binder. 

(4) Information on local recycling programs.

(5) Information about available local utility programs that purchase a 

portion of energy from renewable energy providers. 

(2) a minimum of six of the non-mandatory items listed in Section 

1001.1

Page 24 of 25
264 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

203 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1

Mandatory

Mandatory

Mandatory

(6) Local public transportation options.

0

1

Mandatory

a) HVAC filters

c) ighting controls

d) appliances and settings

e) water heater settings

f) fan controls

0

1004.1 (Reserved)

(5) Information on organic pest control, fertilizers, deicers, and

cleaning products.

(1) A narrative detailing the importance of maintaining a green

building. This narrative is included in all responsible parties’ manuals.

(2) A list of local service providers that offer regularly scheduled

service and maintenance contracts to ensure proper performance of

equipment and the structure (e.g., HVAC, water-heating equipment,

sealants, caulks, gutter and downspout system, shower 

(3) User-friendly maintenance checklist that includes:

b) thermostat operation and programming

(6) Instructions for maintaining gutters and downspouts and the 

importance of diverting water a minimum of 5 feet away from (7) Instructions for inspecting the building for termite infestation.

(Points awarded per two items. Points awarded for both 

mandatory and non-mandatory items.)

(1) A narrative detailing the importance of operating and living in a

green building. This narrative is included in all responsible parties’

manuals.

(4) Information on opportunities to purchase renewable energy from

local utilities or national green power providers and information on

utility and tax incentives for the installation of on-site renewable

energy systems.

(2)(A list of practices to conserve water and energy (e.g., turning off

lights when not in use, switching the rotation of ceiling fans in

changing seasons, purchasing ENERGY STAR appliances and

electronics).

(3) Information on methods of maintaining the building’s relative

humidity in the range of 30 percent to 60 percent.

(9) An outline of a formal green building training program for 

maintenance staff. Addition and Renovation Note : A maintenance manual that 

includes the following:

1003.3 Maintenance manual. Maintenance manuals are created and

distributed to the responsible parties in accordance with Section

1003.0. Between all of the maintenance manuals, five or more of the

following options are included.

(Points awarded per two items. Points awarded for both 

mandatory and non-mandatory items.)

(5) Information on local and on-site recycling and hazardous waste

disposal programs and, if applicable, building recycling and

hazardous waste handling and disposal procedures.

(7) Explanation of the benefits of using compact fluorescent light

bulbs, LEDs, or other high-efficiency lighting.

(8) Information on native landscape materials and/or those that have

low water requirements.

(9) Information on the radon mitigation system, where applicable.

1004

INNOVATIVE PRACTICES

(10) A procedure for educating tenants in rental properties on the

proper use, benefits, and maintenance of green building systems

including a maintenance staff notification process for improperly

functioning equipment.

Addition and Renovation Note: An operations manual that includes 

the following:

all mandatory items listed in Section 1003.2

a minimum of three of the non-mandatory items listed in Section 

1003.2

all mandatory items listed in Section 1003.3.

a minimum of three of the non-mandatory items listed in Section 

1003.3.

(8) A procedure for rental tenant occupancy turnover that preserves 

the green features.

(4) List of common hazardous materials often used around the

building and instructions for proper handling and disposal of these

materials.

Page 25 of 25
APPENDIX B 265

APPENDIX B 

GREEN SCORING & COST

2 — Climate Zone #3

A. Oakland, California
266 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Building Comparison Rated 2/23/2010

two story townhouse, Oakland, California

ANSI-ICC-700-2008 National Green Building StandardTM

Lot 35x85 2,975 Silver Gold Emerald

House 16 x 37' 1,105 sf Required Actual Required Actual Required Actual Required Actual KEY

2-story townhouse 5. Lot Design... 39 110 66 110 93 114 119 150 Points are Co-Dependant on at

Density per acre at this lot size 14.7 6. Resource Efficiency 45 52 79 80 113 116 146 150 least one other cell

7. Energy Efficiency 30 145 60 151 100 159 120 168 Overhead Cost - Dependant on

8. Water Efficiency 14 18 26 28 41 46 60 61 subdivision size

chapter 5 totals are for whole lot, 9. Indoor Env. Quality 36 47 65 79 100 118 140 158

can be divided by 2 units 10. Operation, Maintenance... 8 8 10 14 11 14 12 14

Additional Points 50 100 100 100

Total 222 380 406 462 558 567 697 701

0 Points Cost Points Cost Points Cost Points Cost

Chapter 5 110 0 110 0 114 0 150 1,670

Chapter 6 52 117 80 436 116 1,014 150 7,619

Chapter 7 145 520 151 520 159 520 168 594

Chapter 8 18 0 28 200 46 400 61 891

Chapter 9 47 0 79 250 118 592 158 1,439

Chapter 10 8 950 14 1,044 14 1,044 14 1,044

Total 380 1,587 462 2,450 567 3,570 701 13,257

0.00 1.44 2.22 3.23 12.00

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

Cost/Point 0 #DIV/0! #DIV/0! 0 46

Rating 110 0 0 0 0 0 4 0 36 1,670 Ch. 5 Subtotal Base

4

5

5 0 Leed ND docs - Brownfield cleanup

5

3

3 0 leed sk-07

3

3 0 mapquest

3

3 0 leed sk-07

4

4 0 Leed team already 

Lot Design

5

6

4

4

4 627 8 hour class plus cert

2

2 0 Leed ND docs

Cummulative

Emerald

(1) A natural resources inventory is completed under the direction of 

a qualified professional. 

(2) A plan is implemented to conserve the elements identified by the 

resource inventory as high priority resources. 

(3) Items listed for protection in the resource inventory plan are 

protected under the direction of a qualified professional. 

(4) Basic training in tree or other natural resource protection is 

provided for onsite supervisor.

(5) All tree pruning on site is conducted by a Certified Arborist.

(3) A lot is selected within one-half mile of six or more community 

resources (e.g., recreational facilities (such as pools, tennis courts, 

basketball courts), parks, grocery store, post office, place of worship, 

community center, daycare center, bank, school, restaurant, 

medical/dental office, laundromat/dry cleaner.) 

502.1 A knowledgeable team is established and team member roles 

are identified with respect to green lot design, preparation, and 

development. The project’s green goals and objectives are written 

into a mission statement. 

503.0 Intent. The lot is designed to avoid detrimental environmental 

impacts first, minimize any unavoidable impacts, and mitigate for 

those impacts that do occur. The project is designed to minimize 

environmental impacts and to protect, restore, and enhance the 

natural features and environmental quality of the lot. (To be awarded 

points allocated for design, the intent of the design shall be 

implemented.) 

503.1 Natural resources are conserved by one or more of the 

following:

502 Project Team, Mission Statement, and Goals

(2) A greyfield lot or an EPA-recognized brownfield lot is selected.

501.2 Mass Transportation. A range of mass transportation choices 

are promoted by one or more of the following:

(1) A lot is selected within one-half mile of pedestrian access to a 

mass transit system or within five miles of a mass transit station with 

provisions for parking.

(2) Walkways, street crossings, and entrances designed to promote 

pedestrian activity are provided. New buildings are connected to 

existing sidewalks and areas of development.

(3) Addition and Renovation Note: A renovation or addition project is 

implemented. (Points awarded for using an existing building and 

infrastructure.)

CH. 5 LOT DESIGN, PREPARATION, AND DEVELOPMENT

500.0 Intent. This section applies to lot development for the eventual 

construction of residential buildings, multi-unit buildings, or additions 

thereto that contain dwelling units. The buildings on the lot earn their 

own performance level by complying with the provisions of Sections 

303, 304, or 305.5, as applicable.

501.1 The lot is selected to minimize environmental impact by one or 

more of the following:

(1) An infill lot is selected.

ANSI National Green Building StandardTM Baseline Bronze Silver Gold

Bronze

Cost per SF ($)
APPENDIX B 267

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

3

3 0 Leed ND/ bay Friendly Landscape 

Maintenance Plan is title, reference ANSI 

A300

1 Additional 

Point

Unknown, no grading plan was provided.

(a) Less than 25% 2

(b) 25 to 75% 3

(c) Greater than 75% 4

5

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

6

4

2 Additional 

Points

5 5 0 swppp - page 3 and page 14 

5

5

5 0 swppp - shows dashed line...

6

6 0 very similar hydrology to existing

6

6 0 very similar hydrology to existing

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

(4) A minimum of 75% of the roof is vegetated 

(green roof) 3

5

5 0 L 1-4 landscape plan

4

4 0 leed ss9, landscape plan L2-7, specs section 

02900

(a) Lot is 0% turf 4

(b) Greater than 0% to less than 25% 3 3 0 54% impervious total

(c) 25% to less than 50% 2

(d) 50% to 75% 1

5

5 0 landscape plans L2-4, L1-4, L10-1, planters 

with similar plants

503.5 Landscape plan is developed to limit water and energy use 

while preserving or enhancing the natural environment. 

(1) A plan is formulated to restore or enhance natural vegetation that 

is cleared during construction. Landscaping is phased to coincide with 

achievement of final grades to ensure denuded areas are quickly 

vegetated.

(2) Turf grass species, other vegetation, and trees are selected that 

are native or regionally appropriate for local growing conditions.

(3) A percentage or all turf areas are limited. 

(4) Plants with similar watering needs are grouped (hydrozoning).

(d) placement of utilities under paved surfaces instead of yards.

(c) shared utility trenches or easements

Addition and Renovation Note: section 503.1 applies to additions that 

increase building footprint on the lot; and to renovations that include 

landscape, hardscape, and outdoor living area. (Additional points 

awarded for each strategy implemented.)

(3) All or a percentage of roads and parking are aligned with natural 

topography to reduce cut and fill.

(2) Hydrological/soil stability study for steep slopes is completed and 

used to guide the design of all buildings on the site.

Addition and Renovation Note: Section 503.2 applies to additions that 

increase building footprint on the lot; and to renovations that include 

landscape, hardscape, and outdoor living area. (Additional points 

awarded for each strategy implemented.)

503.2 Slope disturbance is minimized by one or more of the 

following: (Points awarded only if there are developable steep 

slopes on the lot.)

(1) All or a percentage of development on steep slopes is avoided.

(4) Long-term erosion effects are reduced through the design and 

implementation of terracing, retaining walls, landscaping, and 

restabilization techniques.

(5) Underground parking uses the natural slope for parking entrances.

(6) Ongoing maintenance of vegetation during construction is in 

accordance with TCIA A300.

503.3 Soil disturbance and erosion are minimized by one or more 

of the following: (Also see Section 504.3) (Points must be taken here 

to claim points in 504.1)

(3) All or a percentage of impervious surfaces are minimized and 

permeable materials are used for driveways, parking areas, 

walkways, and patios.

(a) tunneling instead of trenching

(b) use of smaller (low ground pressure) equipment or geomats to 

spread the weight of construction equipment

(1) Natural water and drainage features are preserved and used.

(2) A storm water management plan is developed and implemented 

that minimizes concentrated flows and simulates flows found in 

natural hydrology, e.g., vegetative swales, French drains, wetlands, 

drywells, and rain gardens.

(1) Construction activities are scheduled to minimize length of time 

that soils are exposed.

(2) Utilities are installed using one or more alternative means:

(3) Limits of clearing and grading are demarcated on the plan.

503.4 Storm Water Mgmt. Storm water is managed using one or 

more of the following low impact development techniques:
268 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

5

5 0 L2-4 plans show two large trees on east and 

west of building

4

4 360

3

3 0

4

4 0 section 02900

4

4 0 leed ND - protect and maintain wildlife habitat, 

food, water, shelter and nesting

6 6 0 townhouses, apartment, offices,...

3 3 0 epa brownfield

3

4

7

10 10 0 leed nd gct credit...

504 Lot Construction

4

4 0 standard

3

3 184

4

4 0

4

5 5 334

5

5 0

5

5 0 swppp

5

5 25 spec seed and tack 2 times

3

3

3 140 spec seed and tack 2 times

3 3 0 leed nd credit 1.5.3.3.E

505 INNOVATIVE PRACTICES

4

4 0 leed nd credit 1.3

4

4 0 patio paving is concrete and 2 trees 

overlapping/shading

505.2 Heat Island Mitigation. Any combination of the following 

strategies are provided for a minimum of 50% of the horizontal 

surface area of the hardscape:

5

tunneling instead of trenching, use of smaller equipment, use of low 

ground pressure equipment, use of geomats, shared utility trenches or 

easements. 

505.0 Intent. Innovative lot design, preparation and development 

practices are used to enhance environmental performance. Waivers 

or variances from local development regulations are obtained and 

innovative zoning practices are used to implement such pract

505.1 Driveways or parking areas are shared. Waivers or variances 

from local development regulations are obtained to implement such 

practices as applicable. In a multi-unit project, parking capacity is not 

to exceed the local minimum requirements.

(8) Utilities are installed using one or more alternative means such as: 

(1) Fencing or equivalent to protect trees and other vegetation is 

installed.

(4) Topsoil is stockpiled and stabilized for later use to establish 

landscape plantings.

(5) Soil compaction from construction equipment is reduced by 

distributing the weight of the equipment over a larger area (laying 

lightweight geogrids, mulch, chipped wood, plywood, OSB, metal 

plates, or other materials capable of weight distribution in the pathway 

of the equipment).

(6) Disturbed areas that are complete or to be left unworked for 

greater than 21 days are stabilized within 14 days using methods as 

recommended by the EPA or in the approved storm water pollution 

prevention plan (SWPPP), where required.

(7) Soil is improved with organic amendments and mulch.

(2) 14 to less than 21 dwelling units per acre

(2) Trenching, significant changes in grade, and compaction of soil 

and critical root zones in “tree save” areas are avoided.

(3) Sediment and erosion controls are installed and maintained in 

accordance with the storm water pollution prevention plan (SWPPP), 

where required.

(3) Damage to designated existing trees and vegetation is mitigated 

during construction through pruning, root pruning, fertilizing, and 

watering.

504.3 Soil disturbance and erosion. Onsite soil disturbance and 

erosion are minimized by one or more of the following: (also see 

section 503.3)

(1) Limits of clearing and grading are staked out.

504.2 Trees and vegetation. Designated trees and vegetation are 

preserved by one or more of the following:

(2) “No disturbance” zones are created using fencing or flagging to 

protect vegetation and sensitive areas from construction activity. 

504.0 Intent. Environmental impact during construction is avoided to 

the extent possible; impacts that do occur are minimized, and any 

significant impacts are mitigated.

504.1 Onsite supervision and coordination is provided during 

clearing, grading, trenching, paving, and installation of utilities to 

ensure that specified green development practices are implemented 

(Also see Section 503.3.)

(5) Species and locations for tree planting are identified that will 

provide summer shading of streets, parking areas, and buildings to 

moderate temperatures. 

(6) Vegetative wind breaks or channels are designed as appropriate 

for local conditions.

(1) 7 to less than 14 dwelling units per acre (4047 m2)

503.8 Environmentally Sensitive Areas.

(2) Compromised Environmentally Sensitive Areas are mitigated or 

restored.

(8) An integrated pest management plan to minimize chemical use in 

pesticides and fertilizers is developed.

503.9 Density. The average density on a net developable area basis 

is: 

(3) 21 or greater dwelling units per acre

(7) Onsite tree trimmings or stump grinding of regionally appropriate 

trees are used to provide protective mulch during construction and 

cleared trees are recycled as saw lumber or pulp wood.

503.6 Wildlife habitat. Measures are planned that will support 

wildlife habitat.

503.7 Mixed use development is incorporated.

(1) Environmentally Sensitive Areas are avoided.
APPENDIX B 269

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Base Pts.

49 0 3 117 28 320 36 578 34 6,605 Ch. 6 Subtotal 

Cost/Point 0 39 11 16 194

15

12 12 0 type D is 1105 sf

9

6

Mandatory

1 Addt'l Point

3 Addt'l Point

6 Add'l Points

1 Addt'l Point

3 pts per 

system (9 pts 

max)

3 0

roof truss at 24"

3

3 3 0

Wall precuts can be used for 1st and 2nd or 

panelize

3 3 0

verify roof is simple and waste should be 

nominal

3

1

4

4 1,040

Have suppliers prepare use reports with their 

bid at no charge for joists, wall studs and 

rafters. Allowed 1days of professional time to 

prepare sheathing layouts for prints. O/H.

 

(1) Floor system. 

4 4 0 should be precuts specified and shipped

(2) Wall system. 

4 4 0 These should have been shipped as precuts 

or panels

(3) Roof system. 4 4 0

13

13

Max 8 

points

(1)first stacked story 4 4 0

(2) for each additional story 2

Max 12 

points

5

CHAPTER 6: RESOURCE EFFICIENCY

601.6 Stories above grade are stacked, such as in 1 1/2 and 2 story 

or greater structures. The area of the upper story shall be at least 

50% of the area of the story below, based on areas with a minimum 

ceiling height of 7 feet. 

(4) modular construction for the entire building located above grade.

601.5 Pre-cut or pre-assembled components, or panelized or precast 

assemblies are utilized for 90% for the following system or building.

601.7 Site applied finishing materials. Building materials or 

assemblies that do not require additional site applied material for 

finishing are utilized. 

(1) 90% or more of the installed material or assembly listed below:

(1) Less than or equal to 1,000 square feet

(2) Less than or equal to 1,500 square feet

(3) Less than or equal to 2,000 square feet

(4) Less than or equal to 2,500 square feet

(1) Shading of hardscaping: Shade from existing or new vegetation is 

provided (within five years) or from trellises. Shade of hardscaping is 

to be measured on the summer solstice at noon.

(2) Light colored hardscaping: Horizontal hardscaping materials are 

installed with a solar reflectance index of 29 or greater. 

601.1 Conditioned floor area, as defined by ICC IRC calculated in 

accordance with ANSI Z765, is limited. Dwelling unit size is to be 

601 Quality of Construction Materials and Waste

601.0 Intent. Design and construction practices that minimize the 

environmental impact of the building materials are incorporated; 

environmentally efficient building systems and materials are 

incorporated; and waste generated during construction is reduc

(5) Greater than 4,000 square feet (373 m2

)

Multi-Unit Building Note: For a multi-unit building, use a weighted 

average of the individual unit sizes in qualifying for available points. 

601.2 Material Usage. Building-code-compliant structural systems 

or advanced framing techniques that optimize material usage are 

implemented. Points awarded for each system or framing technique 

implemented.

For every 100 square feet over 4,000 sf, one point is to be added 

to Table 303, category 7 for each performance level. 

Addition Note: Additions more than 75% of existing building. 

Section 601.1 does not apply to additions with an area of more than 

75% of the area of the existing building or dwelling unit. 

Additions less than or equal to 75% of existing building. Where 

the addition area is less than or equal to 75 percent of the existing 

buidling or dwelling unit area, points are awarded as follows:

(1) The existing structure is 50% to 75% of total building or dwelling 

unit area.

(2) The existing structure is 76% to 99% of total building or dwelling 

unit area.

Renovation Note: When renovations increase the total existing 

building or dwelling unit area by 1 percent or less, points are awarded 

as follows:

(a) The total area of the existing building or dwelling unit is less than 

or equal to 2500 sf.

(a) The total area of the existing building or dwelling unit is greater 

than 2500 sf.

(5) manufactured home construction for the entire building located 

above grade.

601.3 Building dimensions and layouts are designed to reduce 

material cuts and waste.

(1) When used for at least 80% of floor area

(3) When used for at least 80% of roof area 

(2) When used for at least 80% of wall area

(4) When used for at least 80% of cladding or siding area

(5) When used for at least 80% of penetrations or trim area

601.4 Detailed framing or structural plans, material quantity lists and 

onsite cut lists for framing, structural materials, and sheathing 

materials are provided.
270 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

5 0 windows - spec vinyl, 

5 0

spec siding to be pre finished fiber cement, or 

vinyl (unknown)

3

4

(1) Adobe

(2) Concrete/Masonry

(3) Logs 

(4) Rammed earth

Maximum 

number of 

points 5 

(1) Installing a porch roof or awning.

(2) Extending the roof overhang.

(3) Recessing the exterior door.

Main entrance door 3 3 500 design, material and labor for portico

Additional covered door assembly 1 1 500 design, material and labor for portico

4

Inches Rainfall*

Eave Overhang 

(Inches)

Rake Overhang 

(Inches)

Less than 20 12 12

21 to 40 12 12 4 0 

41 to 70 18 12

More than 70 24 12

0

1

Mandatory

0 0

Not applicable.

4

3 3 0 pretty standard

4

4 320

32 feet gutter, 2 - 20 feet downspouts w/ 

extensions or splash blocks

Mandatory

0 0

add to specs

4

4 348

2

602.8 Termite-resistant materials are used as follows: 

(1) In areas of slight to moderate termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, floors, 

concealed roof spaces not accessible for inspection, exterior decks, 

and exterior claddings within the first 2 feet above the top of the 

foundation. 

602.7 Termite barrier. Continuous, physical,foundation termite 

barrier used with or without low toxicity treatment is installed in 

geographical areas that have subterranean termite infestation 

potential determined in accordance with Figure 6(3).

602.6 Finish grade at all sides of building is sloped to provide a 

minimum of 6 inches of fall within 10 feet of the edge of the building. 

Where lot lines, walls, slopes or other physical barriers prohibit 6 

inches of fall within 10 feet, the final grade 

602.3.2 Interior and exterior foundation perimeter drains are installed 

and sloped to discharge to daylight, dry well, or sump pit.

602.4 Drip edge is installed at eaves and gable roof edges.

602.5 A gutter and downspout system with extensions, or splash 

blocks and effective grading, are provided to carry water at least 5 

feet away from perimeter foundation walls. 

602.3 Foundation Drainage

602.3.1 Where required by the IRC/IBC for habitable and usable 

spaces below grade, exterior drain tile is installed.

Addition Note: Section 602.2 applies to the new construction portion 

of additions. 

Renovation Note: Section 602.2 applies to renovations that alter the 

existing roof.

Table 602.2

Minimum Roof Overhang for One- & Two-Story Buildings

602.2 Roof overhangs, based on inches of rainfall in Table 602.2, are 

provided over at least 90% of exterior walls to protect the building 

envelope.

602.0 Intent. Design and construction practices are implemented that 

enhance the durability of materials and reduce in-service 

maintenance.

602.1 Entries at exterior door assemblies, inclusive of side lights, are 

covered by one of the following methods below to protect the building 

from the effects of precipitation and solar radiation. A projection factor 

of at least 0.375 is provided. Eastern and western facing entries in 

Climate Zones 1, 2, and 3, as determined in accordance with Figure 

6(1), shall have a projection factor of at least 1.0 unless otherwise 

protected from direct solar radiation by other means (e.g. screen wall, 

vegetation).

602 Enhanced Durability and Reduced Maintenance

601.8 Foundations such as frost-protected shallow foundations, pier 

and pad foundations, post foundations and other similar foundation 

types are designed and constructed.

601.9 One or more of the following above grade wall systems that 

provide sufficient structural and thermal characteristics are used for at 

least 75% of the gross exterior wall area of the building: 

(c) Window, skylight, and door assemblies not requiring paint or stain 

on exterior and/or interior surfaces.

(d) Wall coverings or systems not requiring paint or stain or other type 

of finishing application.

(a) Pigmented, stamped, decorative, or final finish concrete or 

masonry.

(2) 50% to less than 90% of the installed building material or 

assembly listed below:

(b) Trim not requiring paint or stain.
APPENDIX B 271

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

6

6 3500 1 deck plus all walls to be converted to termite 

resistant

Mandatory

0 117 very standard

Mandatory

0 0 very standard

4

(1) Rubberized coating, or

(2) Drainage mat.

6

6 520 architect 4 hours

(2) Roof valleys.

3

(2) A green (landscaped) roof system.

3

3 58 Include an under cabinet recycling container 

and back porch bin.

(2) Compost facility provided on-site. 3 3 72

 1 (Max 12 

points)

3

4

Points per Table 

604.1

Material Percentage Recycled Content Per 2 Minor Per 2 Major

25% - 50% 1 2

50% - 75% 2 4 Fibercement siding & aggregate at 

construction entrance for minors.

75% 3 6 9 0 Gypsum board and cellulose insulation. Note: 

specify correct gypsum board.

6

6 0 section 017419 divert 88% by weight or 

volume

7

7 0 section 017419 divert 88% by weight or 

volume

602.10 In areas where there has been a history of ice forming along 

the eaves causing a backup of water, an ice barrier is installed at roof 

eaves and is extended at least 24” inside the exterior wall line of the 

building, in accordance with the IRC/IBC.

Recycled Content

(a) Materials are ground or otherwise safely applied onsite as soil 

amendment or fill. At least 50% (by weight) of construction and landclearing waste shall be diverted from landfill.

605.2 Onsite recycling measures following applicable regulations and 

codes are implemented, such as the following:

Recycled Construction Waste 

605.0 Intent. Waste generated during construction is recycled. 

Note: All waste classified as hazardous shall be properly handled and 

disposed. (Points not awarded for hazardous waste removal.) 

605.1 A Construction Waste Management Plan is developed, 

implemented, and posted at the jobsite with a goal of recycling or 

salvaging a minimum of 50% (by weight) of construction and landclearing waste.

604.1 Building materials with recycled content are used for at least 

two minor and/or two major components of the building.(NOTE: Does 

not specify PConsumer. Implication is that max. allowable is 4 

materials. 9 points is max. in scoring tool. Have to use highest % to 

receive max pts.)

Table 604.1

603.3 Scrap Materials. Facilitation for sorting and reuse of scrap 

building material (e.g. provide a central storage area or dedicated 

bins.)

604 Recycled-Content Building Materials

603.1 Existing buildings and structures are reused, modified or 

deconstructed in lieu of demolition. (One point awarded for every 

200 sq. ft., 18.5m2, of floor area.)

603.2 Reclaimed and/or salvaged materials and components are 

used.Total material and labor cost of salvaged materials shall equal or 

exceed 1% of total construction costs.

602.14 Recycling. Occupant recycling is facilitated by one or more of 

the following methods:

(1) A built-in collection space in each kitchen and an aggregation/pickup space in a garage, covered outdoor space or other area for 

recycling containers.

603 Reused or Salvaged Materials 

603.0 Intent. Practices that reuse or modify existing structures, 

salvage materials for other uses, or use salvaged materials in 

building’s construction are implemented. 

602.13 Roof Surfaces. A minimum of 90% of roof surfaces are 

constructed of one or both of the following:

(1) Products which meet the requirements of the ENERGY STAR® 

cool roof certification or equivalent.

(4) At roof-to-wall intersection and at roof-to-chimney intersections.

(5) A drip cap is provided above windows and doors that are not 

Flashed or protected by covering per Section 602.1.

602.12 Flashing details are shown on plans and flashing is installed at 

all of the following locations, as applicable:

(1) Around exterior fenestrations, skylights and doors.

(3) Deck/balcony to building intersections.

(2) In areas of moderate to heavy termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, floors, 

concealed roof spaces not acessible for inspection, exterior decks, 

and exterior claddings within the first 3 feet above the top of the 

foundation. 

(3) In areas of very heavy termite infestation probability (as defined by 

Figure 6(3)) for the foundation, all structural walls, floors, concealed 

roof spaces not accessible for inspection, exterior decks, and exterior 

claddings.

602.9 Where required by the IRC/IBC, a water-resistive barrier and/or 

drainage plane system is installed behind exterior veneer and/or 

siding. 

602.11 Enhanced foundation waterproofing is installed:
272 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Max 6

3

3 0 section 017419 - asphalt, concrete, wood, 

metals, shingles, gypsum,...

1 3 0

Max 8

(b) engineered wood

(c) bamboo

(d) cotton

(e) cork

(f) straw

3

2 0 Wood cabinets and wood trim

6

6 0 engineered wood, osb walls, lvl beams

1 

(2 pts max)

(a) AFF American Tree Farm System®

606.2(1) Where a minimum of two certified 

wood-based products are used for minor 

elements of the building, such as all trim, 

cabinetry, or millwork. 3

3 420 Specify Masonite doors for FSC certified. 

Estimated added cost of $35/door. And 

kitchen cabinets at no cost.

4

6 pts. max.

2 0 2 225 Specify that OSB comes from a mill that 

complies. Identify another material that 

complies; allowed for added cost.

Max 9 points

6 0 Engineered wood - OSB floor and roof and 

LVL

(3) Roof or floor trusses. 3 0 roof truss

10 points max.

2 2 0

Use indigenous stone for driveway base.

2

8 0 Specify OSB from local mill. Deck lumber, 

windows and siding locally sourced.

(c) Forest Stewardship Council (FSC)

(g) natural fiber products made from crops (soy or corn-based)

(h) products with the minimum biobased contents of the USDA 7 CFR 

Part 2902

606.1(3) For each additional biobased material used for more than 

.5% of the project’s projected building material cost. 

606 Renewable Materials

606.0 Intent. Building materials derived from renewable resources 

are used.

606.1 The following biobased products are used. (Note: 606.1 and 

606.2 denote % of project mat'l cost req'd.)

(a) certified solid wood in accordance with Section 606.2

(b) Other methods approved by the NAHB Research Center (the 

Adopting Entity).

605.3 Recycled Construction materials: Construction materials (e.g., 

wood, cardboard, metals, drywall, plastic, asphalt roofing shingles, or 

concrete) are recycled offsite.

(1) A minimum of two types of materials are recycled.

(2) for each additional recycled material.

606.1(1) At least two types of biobased materials are used, each for 

more than .5% of the project’s projected building material cost. 

Combined 8 pts Max

606.1(2) At least two types of biobased materials are used, each for 

more than 1% of the project’s projected building material cost. 

606.2 Wood-based products are certified to the requirements of one 

of the following recognized product programs: 

(b) Canadian Standards Association’s Sustainable Forest 

Management System Standards (CAN/CSA Z809)

606.3 Manufacturing Energy. Materials are used for major 

components of the building that are manufactured using a minimum of 

33% of the primary manufacturing process energy derived from 

renewable sources, combustible waste sources, or renewable energy 

credits (RECs). (2 points awarded per material.)

608 Indigenous Materials

(d) Program for Endorsement of Forest Certification Systems 

(PEFC)

(e) Sustainable Forestry Initiative Program (SFI)

(6) Other product programs mutually recognized by PEFC

(2) Engineered wood or engineered steel products.

606.2(2) Where a minimum of two certified wood-based products are 

used in major elements of the building, such as walls, floors, or roof.

(1) Lighter, thinner brick with bed depth less than 3 inches, brick with 

coring above 25%, or both.

607 Resource-Efficient Materials

607.1 Products containing fewer materials are used to achieve the 

same end-use requirements as conventional products, including but 

not limited to: (3 points awarded for each material.)

(i) other biobased materials with a minimum of 50 percent biobased 

content (by weight or volume).

608.1 Indigenous materials are used for major elements of the 

building. 

609 Life Cycle Analysis

(1) one type of material.

(2) For each additional material.
APPENDIX B 273

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Max 15 points

(1) Per product/system comparison 3

(2) Whole building LCA analysis 15

Max 10 points

Base Pts. 145 0 0 520 6 0 8 0 9 74 Ch. 7 Subtotal 

Cost per 

point

0 #DIV/0! 0 0 8 

Performance path selected at all levels.

Performance path selected at all levels.

Mandatory Practices

Mandatory

0 0 Done by leed

701.4.1 HVAC SYSTEMS

Mandatory

0 0 2006 IECC requirement. 

Mandatory

0 520 4 hours by proffessional to verify system

701.4.2 DUCT SYSTEM

Mandatory

0 0 do not apply

Mandatory 0 0 do not apply

Mandatory

0 0 

Mandatory

0 0 do not apply

Mandatory

0 0 do not apply

Mandatory

0 0 do not apply

701.4.3.3 WALLS 

Mandatory

0 0 

Mandatory

0 0 

(1) Windows and Doors. Caulking, gasketing, adhesive flashing 

tape, foam sealant, or weatherstripping is installed forming a 

complete air barrier. 

(2) Band Joist and Rim Joists. Band and rim joists are insulated 

and air sealed.

(1) Floors (Including insulated floors above garages and cantilevered 

floors)

(2) Crawlspace. Where insulated, crawlspace wall insulation is 

permanently attached to the walls. Exposed earth in unvented 

crawlspaces is covered with continuous vapor retarder with 

overlapping joints taped or masticed. 

(b) Batt and loose-fill insulation is held in place by permanent 

attachments or systems in accordance with the manufacturer’s 

instructions.

(a) Insulation is installed to maintain permanent contact with the 

underside of the subfloor decking, enveloping any attached ductwork 

within the thermal envelope without compression or air gaps in the 

insulation. This practice does not apply to ducts or other mechanical 

equipment that are adjacent to the underside of the subfloor.

(1) Insulation shall be installed in accordance with the manufacturer’s 

instructions or local code, as applicable.

701.4.3.2 FLOOR / FOUNDATION / CRAWLSPACE

701.4.3 INSULATION and AIR SEALING

701.4.2.2 Building cavities are not used as supply ducts. 

(2) Shafts (duct shaft, piping shaft/penetrations, flue shaft.) Openings 

to unconditioned space are fully sealed with solid blocking or flashing 

and any remaining gaps are sealed with caulk or foam. Fire-rated 

collars and caulking are installed where re

701.4.3.1 GENERAL Insulation and air sealing is in accordance with 

the following: 

701.1.2 Minimum Prescriptive Path Requirements. A building complying with 

section 703 shall obtain a minimum of 30 points from Section 703, and shall include a 

minimum of two practices from Section 704. 

701.1.3 Alternative Bronze Level Compliance. As an alternative, any building that 

qualifies as an ENERGY STAR qualified home or equivalent achieves the Bronze Level 

for Chapter 7.

701.4.2.1 Ducts are sealed with tape complying with UL 181, mastic, 

gaskets, or an approved system as required by the ICC IRC (Section 

M1601.3.1, or ICC IMC Section 603.9) to reduce leakage.

701.2 Emerald Level Points. The Performance Path shall be used to achieve to the 

Emerald Level.

701.4.1.1 Space heating and cooling system/equipment shall be 

sized according to heating and cooling loads calculated using ACCA 

Manual J or equivalent. 

701.4.1.2 Where installed, as a primary heat source in the building, 

radiant or hydronic space heating system is designed using industryapproved guidelines (e.g. ACCA Manual J, GAMA H-22, or an 

accredited design professional's and manufacturer's recommen

701.3 A review by the Adopting Entity or designated third party shall 

be conducted to verify design and compliance with Chapter 7. 

701.1.1 Minimum Performance Path Requirements. A building complying with 

Section 702 shall exceed the baseline minimum performance required by the IECC by 

15%, and shall include a minimum of two practices from Section 704.

609.1 A more environmentally preferable product or assembly for an 

application based upon the use of a Life Cycle Assessment (LCA) tool 

compliant with ISO 14044 or other recognized standards that 

compare the environmental impact of building materials, as

610 Innovative Practices

610.1 Manufacturer's environmental managment system 

concepts. Product manufacturer’s operations and business practices 

include environmental management system concepts and the 

production facility is ISO 14001 certified or equivalent. The aggregate 

value of building products from ISO 14001 certified or equivalent 

production facilities is at least 1% or more of the estimated total 

building materials cost. (1 point awarded for every percent.) 

701.1 Mandatory requirements. The building shall comply with either Section 702 

(Performance Path) or Section 703 (Prescriptive Path). Items listed as “Mandatory” in 

Section 701.4 apply to both the Performance and Prescriptive Paths.

CHAPTER 7: ENERGY EFFICIENCY
274 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory 0 0 

Mandatory

0 0 do not apply

Mandatory

0 0 

Mandatory

0 0 

Mandatory

0 0 do not apply

 1 Add'l Pt

Mandatory

0 0 

 2 Add'l Pts

701.4.4 FENESTRATION

Mandatory

Table 701.4.4.1

Fenestration Specifications

Climate Zones U-Factor SHGC

1 and 2 0.65 0.4

3 0.4 0.4 0 0

4 to 8 0.35 Any

1 to 3 0.75 0.4

4 to 8 0.6 Any

702 Performance Path

Mandatory

Performance path.

(1) 15% 30

(2) 30%

60

(3) 50% 100

(4) 60%

120

120 0 energy guage eRatio of 0.55 or 45% base, but 

with solar DHW 0.36 or 64%

703 Prescriptive Path 

704 Additional Practices

704.2 Lighting and Appliances

4

8

8 0 section 260650-11 - fixtures are e*

(3) A minimum of 80% of the exterior lighting wattage has an 

efficiency of at least 40 lumens per watt or be a solar powered light 

fixture. 

704.2.1 Hard-wired lighting meets one of the following: 

704.1 Application of Additional Practice Points. Points from 

Section 704 can be added to points earned in Section 702 

(Performance Path), Section 703 (Prescriptive Path) or Section 

701.1.3 (alternative Bronze Level compliance).

(1) A minimum of 50% of the total hard-wired lighting fixtures, or the 

bulbs in those fixtures, qualify as ENERGY STAR or equivalent.

(2) A minimum of 50% of the total hard-wired lighting fixtures qualify 

as ENERGY STAR or equivalent.

(3) Eave vents. Where ceiling/attic assemblies or designs have eave 

vents, baffles, or other means shall be utilized to minimize air 

movement into or under the insulation.

701.4.4.1 The NFRC-certified U-factor and SHGC windows, exterior 

doors, skylights, and tubular daylighting devices (TDDs) are in 

accordance with ENERGY STAR, or equivalent, or Table 701.4.4.1. 

Decorative fenestration elements with a maximum area of 15 sq

Skylights and TDDs 

(max. certified ratings)

Windows and Exterior Doors (maximum 

certified ratings)

701.4.3.4 CEILINGS AND ATTICS

(5) Exterior Architectural features. Code required building 

envelope insulation and air sealing is not disrupted at exterior 

architectural features such as stairs and decks. 

(a) Sill sealer, or other material that will expand and contract, shall be 

installed between foundation and sill plate.

(3) Between Foundation and Sill Plate Bottom Plate

(4) Skylights and kneewalls. Skylight shafts and knee walls are 

insulated to the same level as the exterior walls.

(1) Attic access (except unvented attics). Attic access, knee wall 

door, or drop down stair is covered with insulation and gasketed. 

Knee wall door is insulated unit or is covered with insulation.

(b) Caulk or the equivalent is installed to seal the bottom plate of 

exterior walls.

(2) Recessed Lighting. Recessed light fixtures that penetrate the 

thermal envelope are airtight, IC rated, and sealed with gasket, caulk, 

or foam.

Renovation Note: Replace existing recessed lights that penetrate 

the thermal envelope with airtight, IC-rated recessed light fixtures that 

are sealed to drywall with gasket, caulk, or foam. (Additional point 

per fixture)

702.2 Energy efficiency features are implemented to achieve energy 

cost performance that exceeds ICC IECC by the following. A 

documented analysis using software in accordance with ICC IECC, 

Section 404, or ICC IECC Section 506.2 through 506.5, applied a

Renovation Note: Provide blocking or baffle at eaves to ensure 

ventilation over attic iinsulation.

702.1 Points from Section 702 (Performance Path) shall not be 

combined with points from Section 703 (Prescriptive Path).
APPENDIX B 275

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

2 0 no recess

(1) 25% of lighting 2

(2) 50% of lighting 4

2

(1) Refrigerator 5 5 0 cost nuetral

(2) Dishwasher 2 2 0 see chapter 8

(3) Washing machine 4 4 0 see chapter 8

704.2.6 Induction cooktop is installed. 1

1

5

Climate Zone and Overhang Depth

Vertical Distance 

between bottom of 

overhang and top of 

window sill

1 through 3 2' 8" <7' 4"

1 through 3 2' 8" <6' 4"

1 through 3 2' 4" <5' 4"

1 through 3 2' 0" <4' 4"

1 through 3 2' 0" <3' 4"

4 through 6 2' 4" <7' 4"

4 through 6 2' 4" <6' 4"

4 through 6 2' 0" <5' 4"

4 through 6 2' 0" <4' 4"

4 through 6 1' 8" <3' 4"

7 and 8 2' 0" <7' 4"

7 and 8 1' 8" <6' 4"

7 and 8 1' 8" <5' 4"

7 and 8 1' 4" <4' 4"

7 and 8 1' 0" <3' 4"

1

3

1

(9) Return air or transfer grilles/ducts are in accordance with Section 

704.4.5. 

704.3.1.3 Passive cooling design features are in accordance with 

three or more of the following:

704.3.1.2 Automated solar protection is installed to provide shading 

for windows.

Points for three items:

Points for one additional item:

(c) Sloped skylights on slopes facing within 45o of true South, East or 

West are less than 1.5% of the Finished Ceiling area

(7) Overhangs or adjustable canopies or awnings or trellises provide 

shading on south facing glass for the appropriate climate zone in 

accordance with Table 704.3.1.1:

(8) The south face windows have a SHGC of 0.40 or higher.

Table 704.3.1.1 Southern Window Overhang Depth

(5) Vertical glazing area is less than 8% of gross Conditioned Floor 

Area on the north face, and glazing is ENERGY STAR compliant or 

equivalent.

(6) Skylights, where installed, are in accordance with the following:

(a) Shades and insulated wells are used and all glazing is ENERGY 

STAR compliant or equivalent.

(b) Horizontal skylights are less than 0.5 % of Finished Ceiling Area

(1) The long side (or one side if of equal length) of the building faces 

within 20o of true south.

(2) Vertical glazing area is between 5% and 7% of gross Conditioned 

Floor Area on the south face (also see Section 704.3.1.1(8)).

(3) Vertical glazing area is less than 2% of gross Conditioned Floor 

Area on the west face, and glazing is ENERGY STAR compliant or 

equivalent.

(4) Vertical glazing area is less than 4% of gross Conditioned Floor 

Area on the east face and glazing is ENERGY STAR compliant or 

equivalent.

704.2.7 Occupancy sensors are installed for a minimum of 80% of 

hardwired lighting outlets.

704.3.1 Solar space heating and cooling.

704.3 Renewable Energy/Solar Heating and Cooling

704.2.4 Tubular daylighting device (TDD) or a skylight with sealed, 

insulated, low-E glass is installed in rooms without windows. (Points 

awarded per building.)

704.2.5 ENERGY STAR or equivalent appliance(s) are installed:

704.2.2 The number of recessed light fixtures that penetrate the 

thermal envelope are less than 1 per 400 square feet of total 

conditioned floor area and are in accordance with Section 

701.4.3.4(2). 

704.2.3 Occupancy sensors are installed on indoor lights, and photo 

or motion sensors are installed on outdoor lights to control lighting. 

704.3.1.1 Sun-tempered Design: Building orientation, sizing of 

glazing, and design of overhangs are in accordance with all of the 

following:
276 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(c) Covered porches

4

704.3.2 Solar water heating

SEF - Electric Tank SEF - Gas Tank POINTS

1.30 - 1.50 0.85 - 1.00 8 8 0 installed at base w/ no specs...need min.

1.51 - 1.80 1.01 - 1.20 11

1.81 - 2.30 1.21 - 1.50 14

2.31 - 3.00 1.51 - 2.00 17

 3.01 2.01 20

1

0.5

704.3.3.1 Photovoltaic panels are installed on the property. (Points 

awarded per every 100 watts DC of the rated PV system) 

704.3.3.2 Other onsite renewable energy source is installed (e.g., 

wind energy, onsite micro-hydro power, active solar space heating 

systems). (Points awarded per every 1/10 kW of the system) 

704.3.2.1 Solar water heater. SRCC (Solar Rating & Certification 

Corporation) OG 300 rated, or equivalent, solar domestic water 

heating system is installed. Solar Energy Factor (SEF as defined by 

SRCC) is in accordance with Table 704.3.2.1.

704.3.3 Additional renewable energy options

Table 704.3.2.1 - Solar Hot Water Systems

(a) Thermal mass is solid and a minimum of 3” in thickness. Where 

two thermal mass materials are layered together (e.g. ceramic tile on 

concrete base) to achieve the appropriate thickness, they are fully 

adhered to (touching) each other. 

(b) Thermal mass directly exposed to sunlight must be provided in the 

following minimum ratios: 

(i) Above latitude 35o: 5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(ii) Latitude 30o to 35o: 5.5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(iii) Latitude 25o to 30o: 6 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(c) Thermal mass not directly exposed to sunlight is permitted to be 

used to achieve thermal mass requirements of Section 704.3.1.4 (2) 

based on a ratio of 40 square feet of thermal mass for every 1 square 

foot of south facing glazing. 

(3) In addition to return air or transfer grilles/ducts required by Section 

704.3.1.1, provisions for forced airflow to adjoining areas are 

implemented as needed. 

(6) Roofing material is installed with a minimum 0.75 inch continuous 

air space offset from the roof deck from eave to ridge.

(2) Additional thermal mass for any room with south-facing glazing of 

more than 7% of the finished floor area is provided in accordance with 

the following:

704.3.1.4 Passive solar heating design. In addition to the suntempered design features in Section 704.3.1.1, all of the following are 

implemented: 

(1) Additional glazing, no greater than12%, is permitted on the south 

wall. This additional glazing is in accordance with the requirements in 

Section 704.3.1.1. 

(4) Solar reflective roof or radiant barrier is installed in Climate Zones 

1, 2 or 3 and roof material meets a 3 year aged criteria of 0.50.

(5) Internal exposed thermal mass is a minimum of three inches in 

thickness. Thermal mass consists of concrete, brick, and/or tile that 

are fully adhered to a masonry base or other masonry material and is 

in accordance with one or a combination of the fo

(a) A minimum of one square foot of exposed thermal mass of floor 

per three square feet of gross finished floor area. 

(b) A minimum of three square feet of exposed thermal mass in 

interior walls or elements per square foot of gross finished floor area.

(b) Moveable awnings or louvers

(d) Attached or detached conditioned/unconditioned enclosed space 

that provides full shade of east and west windows (e.g., detached 

garage, shed or building)

(2) Overhangs are installed to provide shading on south-facing 

glazing in accordance with Section 704.3.1.1(7). (Points not 

awarded if points are taken under 704.3.1.1.)

(3) Windows and/or venting skylights are located to facilitate cross 

ventilation.

(1) Exterior shading is provided on east and west windows using one 

or a combination of the following strategies:

(a) Vine covered trellises with the vegetation separated a minimum of 

1 foot from face of building.
APPENDIX B 277

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

704.4 Ducts

5

15

15 0 

15

12

5

704.5 HVAC Design and Installation

1

1

1 0 Standard.

3

3 0 Specify in scope.

Standard.

Standard.

74 Allow team of 2 - 1 hours at field rate.

1

4

5

(a) 5 ACH50 0.25 nat 3

(b) 4 ACH50 0.2 6

(c) 3 ACH50 0.15 9

(d) 2 ACH50 0.1 12

(e) 1 ACH50 0.05 15

(2) Refrigerant charge is verified by super-heat and/or sub-cooling 

method.

2. Fossil fuel furnace and water heater is sealed combustion or power 

vented in accordance with Section 901.1.

(3) Burner is set to fire at nameplate input.

704.6.1 Third party onsite inspection is conducted to verify 

conformance with all of the following, as applicable. Minimum of 2 

inspections are performed. One inspection after insulation is installed 

and prior to being covered, and another inspection upon completion of 

the project. Where multiple building or dwelling units of the same 

model are built by the same builder, a representative sample 

inspection of a minimum of 15% of the buildings or dwelling units is 

permitted. 

(5) Total air flow is within 10% of design flow.

704.5.5 Manufacturer’s label or printed specifications for sealed air 

handler (except furnaces) indicates the leakage is less than or equal 

to 2% of design airflow at a pressure of 1-inch w.g. (1250 Pa). Air 

handlers are tested with inlets, outlets, an

(4) Air handler setting/fan speed is set per manufacturer’s 

instructions.

704.5.4 HVAC equipment operates using an alternate refrigerant 

containing no HCFCs. (Points awarded only until January 20, 2010.)

(6) Total external system static does not exceed equipment capability 

at rated airflow. 

704.4.1 Duct system is sized, designed, and installed according to 

ACCA Manual D or equivalent.

(2) Heating and cooling ducts and mechanical equipment are 

installed within the conditioned building space .

(1) Start-up procedure is performed according to manufacturer’s 

instructions.

704.4.2 Space heating is provided by a system that does not include 

air ducts.

704.4.4 Ductwork is in accordance with all of the following: 

(1) Building cavities are not used as return ductwork.

704.4.3 Space cooling is provided by a system that does not include 

air ducts.

704.5.2 HVAC contractor and service technician are certified by a 

nationally or regionally recognized program such as North American 

Technician Excellence, Inc. (NATE), Building Performance Institute 

(BPI), Radiant Panel Association, or manufacturers’ tr

704.5.3 Performance of the heating/cooling system is verified by the 

HVAC contractor in accordance with all of the following: 

(3) Ductwork is not installed in exterior walls 

704.4.5 Return ducts or transfer grilles are installed in every room 

with a door. This practice does not apply to bathrooms, kitchens, 

closets, pantries, and laundry rooms. 

704.5.1 ACCA Manual S or equivalent is used to select heating and/or 

cooling equipment.

704.6 Installation and Performance Verification

(2) Building envelope air sealing is installed.

The maximum leakage rate is in accordance with:

704.6.2 Third party testing is conducted to verify performance. 

704.6.2.1 Building envelope leakage rate is demonstrated by blower 

door test. In addition to the test, the following practices are required:

1. Whole building ventilation is provided in accordance with Section 

902.2.

(1) Ducts are installed per IRC/IMC and ducts are sealed.

(4) Windows, skylights, and doors are flashed, caulked, and sealed in 

accordance with manufacturer’s recommendations and in accordance 

with Section 703.2.1.

(3) Insulation is installed in accordance with Section 703.1.2 

3. Fireplaces and Fuel Burning Appliances are in accordance with 

901.2.
278 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

15

5

15

8

7 Points Max

2

(2) Energy monitoring device 4

(3) Energy management control system 7

2

5

Base Pts. 18 0 0 0 10 200 18 200 15 491 Ch. 8 Subtotal 

Cost/Point 0 #DIV/0! 20 33

2

3

6

6

8

2 2 0

8 8 200 (8) (200)

12 12 500

1 1 0

section 220000 ...in-sink-erator...

1 Point 

(3 Points Max)

1 0

section 220000 - shower head 1.6 gpm 

maximum flow

1 Add'l Pt

(3) One of the following piping system designs is implemented:

801.3 A minimum of one food waste disposer is installed at the 

primary kitchen sink. 

801.4 (1&2) 1) The total showerhead flow rate at any point in time, 

for all showerheads in each shower compartment is less than 2.5 

gpm, tested at 80 psi per ASME A112.18.1/CSA B125.1. 2) In 

addition the showerheads must be equipped with an automatic com

(b) On demand hot water recirculation system is installed.

801.2 Energy Star® or equivalent water-conserving appliances are 

installed 

(a) Measured flow at each supply and return register is within 25% of 

design flow.

(1) Dishwasher

(3) Washing machine with a water factor of 6.0 or less

(2) Washing machine

(3) All shower compartments installed meet the above conditions and 

are 2.0 to less than 2.5 gpm. 

(2) All hot water piping which runs to the plumbing fixtures in both the 

kitchen and bathrooms is 30-feet or less from the water heater and is 

sized in accordance with the code for the specified application.

801.0 Intent. Measures that reduce indoor and outdoor water usage 

are implemented.

801.4 Showerheads

(b) Total airflow is within 10% of design flow.

704.6.2.3 Balanced HVAC air flows are demonstrated by flow hood 

or other acceptable flow measurement tool. Test results in 

accordance with both of the following:

704.6.2.2 The entire central HVAC duct system, including air 

handlers and register boots, is tested for leakage at a pressure 

differential of 0.1 inches w.g. (25 Pa). The maximum leakage as a 

percent of the system design flow rate is in accordance with 

(1) 6% for ductwork entirely outside the building's thermal envelope.

(2) 6% for ductwork entirely inside the building's thermal envelope.

1

(a) Tankless water heater is installed at point of use and is served 

only by cold water or a solar-assisted system.

(4) Pipe runs exceeding 40-feet from the water heater to fixture 

locations are aided by one of the following: 

(a) Use of structured-type plumbing with demand controlled hot water 

loops, in which the volume of water contained in the pipe and fixture 

fittings downstream of the recirculating trunk line is a maximum of 4 

cups (0.25 gallons).

(b) Implement an engineered parallel piping system (i.e. manifold 

system) in which the hot water line distance from the water heater to 

the parallel piping system is less than 15 feet and the parallel piping to 

the fixture fittings contains a maximum of 8

(c) Central core plumbing system with all plumbing fixture fittings (e.g., 

faucets & showerheads) located such that the volume of water 

contained in each pipe run between the water heater and fixture fitting 

is a maximum of 6 cups (0.38 gallons).

801.4 (3&4) All shower compartments in the home comply with 801.4 

(1&2).

(2) The buyer of the home selects a renewable energy service plan 

provided by the utility prior to occupancy of the home.

(1) Builder selects a renewable energy service plan provided by the 

local electrical utility for interim (temporary) electric service. The 

builder’s local administrative office has renewable energy service.

705.1 Energy consumption control. A whole building or whole 

dwelling unit device is installed that controls or monitors energy 

consumption. 

(1) All hot water piping which runs to the plumbing fixtures in both the 

kitchen and bathrooms is 40-feet or less in length from the water 

heater and is sized in accordance with the code for the specified 

application.

801.1. Indoor hot water usage is reduced by one of the following 

practices: 

705 Innovative Practices

801 Indoor and Outdoor Water Use

(1) Programmable communicating thermostat

705.2 Renewable energy service plan is as follows:

CHAPTER 8: WATER EFFICIENCY

(3) 6% for ductwork both inside and outside the building thermal 

envelope.
APPENDIX B 279

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2 Add'l Pts 2 0

section 220000 - shower head 1.6 gpm 

maximum flow

1 

3 Pts Max 2 0 section 220000 - 1.5 gpm maximum flow

2 Add'l Pts 2 0

section 220000 - 1.5 gpm maximum flow

Mandatory

6 

18 Pts Max

12 200 Install low flow toilet.

4 

Max 4 Points

6 

Add'l Points

6 0

10 Pts. Max

2 20 L3-6, sawn spray, bubbler, root watering...

4

4 4 0

4

4

6 4 max of 10

3

3 0 job this size should have been spec'd

2

2 0 include in design of system

4

4

15

6 6 191 

2

1

4 Points 

(per fixture)

10

24 Points Max

Mandatory

8

8 Add'l Points

2

801.5.1 Water-efficient lavatory faucets with 1.5 gpm or less 

maximum flow rate when tested at 60 psi in accordance with ASME 

A112.18.1 are installed.

(4) All shower compartments installed meet the above conditions and 

are 1.6 to less than 2.0 gpm. 

801.5 Faucets

(2) all lavatory faucets in the home meet the conditions of 801.5.1

(1) a bathroom (Points awarded for each bathroom.)

801.9 Water Filters. Water filter is installed to improve water quality 

for the whole building or whole dwelling unit.

802.1 Gray water (as specified in ICC IRC, Appendix O) is separated 

and reused, as permitted by local building code. (Points awarded for 

either Section 802.1(1) or 802.1(2), not both)

(1) Excess Water Flow Shutoff

(2) Leak Detection System

802.3 Automatic shutoff water devices. One of the following 

automatic shutoff water supply devices is installed. Where a fire 

sprinkler system is present, installer is to ensure the device will not 

interfere with the operation of the fire sprinkler system

1) Gold and emerald levels: All water closets and urinals are in 

accordance with either Section 802.2 or Section 801.6. 

(2) Soil moisture sensor based irrigation controller

3) All toilets and urinals are in accordance with Section 802.2 (2). 

(1) Each water closet flushed by reclaimed or recycled water.

(2) Irrigation from reclaimed or recycled water onsite

802.2 Composting or waterless toilets and/or urinals. Composting 

or waterless toilets and/or urinals are in accordance with the following: 

(For water closets, points awarded for either Section 802.2 or 

801.6, but not both) 

(3) No irrigation is installed and a landscape plan is developed in 

accordance with Section 503.5(1) as applicable. (Points must be 

taken in 503.5(1) in order to receive points for 801.7.4(3)

801.8 Rainwater collection and distribution is provided.

2) Composting or waterless toilet and/or urinal is installed. (Points 

awarded per fixture)

(1) Rainwater is collected and used 

(2) Rainwater is distributed using a renewable energy source or 

gravity.

(1) Evapotranspiration (ET) based irrigation controller with a rain 

sensor 

(1) High distribution uniformity (DU) rotating spray heads

(3) Bubblers

(2) Drip irrigation

801.7.3 Irrigation system is zoned separately for turf and bedding 

areas.

(5) Soaker hose

(6) Subsurface irrigation

1) designed by a professional in accordance with EPA WaterSense 

requirements or equivalent

801.7.2 Irrigation system is in accordance with both of the following: 

2) installed in accordance with EPA WaterSense program or 

equivalent 

4) All water closets and all urinals are in accordance with Section 

801.6(2) or Section 801.6(3), as applicable. 

(3) A urinal is installed with a flush volume of 0.5 gallons or less 

when tested in accordance with ASME A112.19.2.

(1) Gold and Emerald Levels: All water closets and urinals are in 

accordance with either Section 801.6 or 802.2.

801.7.4 The irrigation system(s) is controlled by a smart controller: 

(4) Drip emitters

801.7 Irrigation systems 

801.7.1 A low-volume, irrigation system is installed for each 

landscape type utilized: (Points awarded for each type of 

irrigation system installed.)

(2) A water closet is installed with an effective flush volume of 1.28 

gallons or less when tested in accordance with ASME A112.19.2 (all 

water closets) and ASME A112.19.14 (all dual flush water closets), 

and is in accordance with EPA WaterSense Tank-Typ
280 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Base Pts. 43 0 4 0 32 250 39 342 40 847 Ch. 9 Subtotal 

Cost/Point 0 0 8 9 21 

5

5 0 92% gas boiler in exterior mechanical room

5

5 5 100 add radiator to mech room to condition

3

5 5 0 boiler

2

5

7

4

6

6

6

6

7 7 0 

Mandatory 

2 Points 0 0 

do not apply

Mandatory 

2 Points 0 0 

do not apply

4

10 10 0 

10 points 

max.

901.3(1)(b) A continuous air barrier is provided between walls and 

ceilings separating the garage space from the conditioned living 

spaces. 

901.3(1)(c) For one and two-family dwelling unit attached garages, a 

100 cfm or greater ducted, or 70 cfm or greater unducted wall 

exhaust fan is installed and vented to the outdoors, designed and 

installed for continuous operation, or has controls (e.g., motion 

detectors, pressure switches) that activate operation for a minimum 

of 1 hour when either human passage door or roll-up automatic doors 

are operated. For ducted exhaust fans, the fan airflow rating and duct 

sizing are in accordance with Appendix A. (If you claim points for 

901.3(1)(c), you cannot claim points for 901.3(2). 

901.3(2) A carport is installed, the garage is detached from the 

building, or no garage is installed. (If you claim points for 901.3(2), 

you cannot claim points for 901.3(1)(a), 901.3(1)(b), or 901.3(1)(c).

901.4(2-6) Wood Materials. A minimum of 85% of material within a 

product group (i.e. wood structural panels, countertops, composite 

trim/doors, custom woodwork, and/or component closet shelving) is 

manufactured in accordance with the following: 

901.3 Garages are in accordance with the following:

901.3(1)(a) Where installed in the common wall between the attached 

garage and conditioned space, the door is tightly sealed and 

gasketed. 

901.2.1(2)(c) Wood stove and fireplace inserts, as defined in UL 

1482, Section 3.8 are in accordance with the certification 

requirements of UL 1482 and are in accordance with the emission 

requirements of the EPA Certification and the State of Washington W

901.2.1(2)(d) Pellet (biomass) stoves and furnaces are in accordance 

with the requirements of ASTM E1509 or are EPA Certified. 

901.2.1(2)(e) Masonry heaters are in accordance with the definitions 

in ASTM E1602 and ICC IBC, Section 2112.1. 

901.2.2 Fireplaces, woodstoves, pellet stoves, or masonry heaters 

are not installed. 

 (b) Direct vent water heater

901.2.1(2)(b) Factory-built wood burning fireplaces are in accordance 

with the certification requirements of UL 127 and are EPA certified.

901.1.4 The following electric equipment is installed:

1) Heat pump air handler in unconditioned space

2) Heat pump air handler in conditioned space 

901.2.1(1) Natural gas and propane fireplaces that are power vented 

or direct vented, are equipped with permanently fixed glass fronts or 

gasketed doors, and comply with ANSI Z21.88/CSA 2.33a or ANSI 

Z21.50/CSA 2.22 

901.2 Fireplaces and Fuel Burning Appliances (except cooking 

appliances, clothes dryers, water heaters, and furnaces) located in 

conditioned space are code compliant, vented to the outdoors, and 

have adequate combustion and ventilation air provided to minimize 

spillage or back-drafting, in accordance with the following: All of the 

following items are mandatory, if applicable, for certification.

901.2.1(2)(a) Wood burning fireplaces are equipped with gasketed 

doors designed to operate with the doors closed, outside combustion 

air, and a means is provided for sealing the flue to minimize interior air 

(heat) loss when not in operation.

901.1.3 The following combustion space heating and water heating 

equipment is installed within conditioned space. 

(1) Direct vent furnace or boiler

(2) (a) Power vent water heater

901.1.1 Natural draft space heating or water heating equipment is not 

located in conditioned spaces, including conditioned crawl spaces. 

Natural draft equipment is permitted to be installed within the 

conditioned spaces if located in a mechanical room that has an 

outdoor air source, and is otherwise sealed and insulated to separate 

it from the conditioned space(s).

901.1.2 Air handling equipment or return ducts are not located in the 

garage, unless placed in isolated, air-sealed mechanical rooms with 

an outside air source. 

CHAPTER 9: INDOOR ENVIRONMENTAL QUALITY

901 Pollutant Source Control

901.0 Intent. Pollutant sources are controlled. 

901.1 Space and water heating options
APPENDIX B 281

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

0 0

add to specs

2 Points per 

Product Group

2 0 cabinets

2 Points per 

Product Group

2 0 trim

3 Points per 

Product Group

4 Points per 

Product Group

4 Points per 

Product Group

2 Add'l Pts

Mandatory

0 0 show flooring break lines on plans

6 6 0 should already comply in california

2 2 0 should already comply in california

2 2 0 should already comply in california

6

6 0 should already comply in california

4

5

8

8 0 should be spec/or code

5

5 0 should be spec/or code

(4) Particleboard, MDF, or hardwood plywood is in accordance with 

CPA 2.

(6) Non-emitting products. 

a) Construction Adhesives: VOC content not to exceed 7% by weight 

or 75 grams/liter, whichever is greater. 

901.9.1 For exterior low-VOC adhesives and sealants, a minimum of 

85% of site-applied products used for the installation of subfloors and 

on the exterior of the project are in accordance with one of the 

folllowing: 

(1) The California Air Resources Board consumer products regulation 

as follows: 

(d) 550 grams/liter clear wood lacquer 

901.8.2 Site-applied interior products are in accordance with the 

emissions levels of CDPH 01350, as certified by a third party program 

such as the Scientific Certification Systems (SCS) Indoor Advantage 

Gold Program or the Greenguard Environmental Institute's Children 

and Schools Certification Program.

901.9 Adhesives and Sealants. 

(b) 100 grams/liter non flat

(c) 350 grams/liter clear wood varnish

(4) VOC limits in accordance with:

(a) 50 grams/liter flat 

(2) CARB Suggested Control Measure for Architectural Coatings 

(3) GS-11

901.8.1 Site-applied interior products are in accordance with one or 

more of the following; not both.

(1) Zero VOC, determined by EPA Method 24 (VOC content below 

the detection limit for the method). 

901.7 Wall coverings. A minimum of 85% of wall coverings are in 

accordance with the emission concentration limits of CDPH 01350 

(using the office scenario), as certified by a third-party program, such 

as the Scientific Certification Systems (SCS) Indoor Advantage Gold 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program. 

901.8 Architectural coatings. A minimum of 85% of the architectural 

coatings are in accordance with one of the following conditions:

(c) Carpet adhesives

901.6 Hard-surface flooring. A minimum of 85% of installed hardsurface flooring is in accordance with the emission concentration limits 

of CDPH 01350 (using the office scenario), as certified by a thirdparty program, such as the RFCI's FloorScore Indoor Air Certification 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program. 

(a) Carpet

(b) Carpet cushion

901.5 Carpets are in accordance with the following:

901.5(1) Wall-to-wall carpeting is not installed adjacent to water 

closets and bathing fixtures .

901.5(2) A minimum of 85% of installed carpet area, carpet cushion 

(padding), and carpet adhesives are in accordance with the emission 

levels of CDPH 01350, as certified by a third-party program, such as 

the Carpet and Rug Institute’s (CRI) Green Label Pl

901.4(1) Structural plywood used for floor, wall, and/or roof sheathing 

is compliant with DOC PS 1 and/or DOC PS 2. OSB used for floor, 

wall, and/or roof sheathing is compliant with DOC PS 2. The panels 

are made with moisture-resistant adhesives. The trademark indicates 

these adhesives as follows: Exposure 1 or Exterior for plywood, and 

Exposure 1 for OSB. 

(2) Particleboard and MDF (medium density fiberboard) is 

manufactured and labeled in accordance with CPA A208.1 and CPA 

A208.2, respectively.

(3) Hardwood plywood is in accordance with HPVA HP-1 and HUD 

Title 24, Part 3280.

Renovation Note: Additional points for Section 901.4 apply to 

renovations that replace all existing countertops, shelving, and other 

nonstructural products.

(5) Composite wood or agrifiber panel products contain no added 

urea-formaldehyde or are in accordance with the CARB Composite 

Wood Air Toxic Contaminant Measure Standard.
282 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

5

5 0 should be spec/or code

5

2

3

3 0 (3) 0 should be spec/or code

5

5 0 Require better specs on cabinets.

4

4 0 should be spec/or code

1

1 0 should be spec/or code

3

1

1 44

1

1

Mandatory

0 0 plans M2.3.4 fans 70 and 100 cfm

Mandatory

0 0 

8

8 0 should be spec/or code

(1) Bathrooms (including powder rooms) are vented to the outdoors. 

The minimum ventilation rate is 50 cfm for intermittent operation or 20 

cfm for continuous operation in bathrooms. 

(2) Clothes dryers are vented to the outdoors. 

(3) Kitchen exhaust units and/or range hoods are ducted to the 

outdoors and have a minimum ventilation rate of 100 cfm for 

intermittent operation or 25 cfm for continuous operation. 

901.14 Non-smoking areas. All interior common areas of a multi-unit 

building are designated as non-smoking areas with posted signage.

902 Pollutant Control

902.0 Intent. Pollutants generated in the building are controlled. 

902.1.1 Spot ventilation is in accordance with the following:

901.12 A carbon monoxide (CO) alarm is installed in a central location 

outside of each separate sleeping area in the immediate vicinity of the 

bedrooms. The CO alarm(s) is located in accordance with NFPA 720 

and is hard-wired with a battery back-up. The alarm device(s) is 

certified by a third party for conformance with either CSA 6.19 or UL 

2034.

901.13 Building entrance pollutants control. Pollutants are controlled 

at all main building entrances by one of the following methods: 

(1) Exterior grilles or mats are installed in a fixed manner and may be 

removable for cleaning. 

(2) Interior grilles or mats are installed in a fixed manner and may be 

removable for cleaning. 

901.11 Insulation is in accordance with the following: 

(1) Formaldehyde emissions of wall, ceiling, and floor insulation 

materials are in accordance with the emissions levels of CDPH 

01350, as certified by a third-party program, such as the 

GREENGUARD Environmental Institute's Children and Schools 

Certification Program or theScientific Certifications Systems (SCS) 

Indoor Advantage Gold Program.

(2) Formaldehyde emissions of duct insulation materials are in 

accordance with the emissions levels of CDPH 01350, as certified by 

a third-party program, such as the GREENGUARD Environmental 

Institute's Children and Schools Certification Program or the Scientific 

Certifications Systems (SCS) Indoor Advantage Gold Program.

(2) Kitchen and bath vanity cabinets in accordance with CARB 

Composite Wood Air Toxic Contaminant Measure Standard are 

installed. 

(3) Kitchen and bath vanity cabinets are installed that contain no 

added urea formaldehyde or are in accordance with 

GGPS.EC.010.R0, ASTM D6670, or equivalent. 

(2) GS-36

901.10 Cabinets. A minimum of 85% of kitchen and bath vanity 

cabinets are in accordance with one of the following: (Where more 

than one of the following practices is used, the practice with the 

fewer number of points is awarded)

(1) Kitchen and bath vanity cabinets in accordance with KCMA ESP 

01, or equivalent, are installed.

901.9.2 Interior Low-VOC Adhesives and Sealants. For interior low 

VOC adhesives and sealants, a minimum of 85% of site-applied 

products used within the interior of the building are in accordance with 

one of the following, as applicable:

1) CDPH 01350, as certified by a third party program, such as 

Scientific Certification Systems (SCS) Indoor Advantage Gold 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program.

c) The VOC content of all other caulks and sealants not to exceed 2% 

by weight or 30 grams/liter, whichever is greater.

(d) The VOC content of contact adhesives not to exceed 55% by 

weight or 480 grams/liter, whichever is greater.

(2) GS-36

b) The VOC content of reactive sealants (i.e., silicones, 

polyurethanes, and hybrids, such as MS Polymer and silylated 

polyurethane resin or SPUR) not to exceed 4% by weight or 50 

grams/liter, whichever is greater.
APPENDIX B 283

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

9 Points Max

5 5 0 m0.0.3 ef9 - broan qtxe110s

2 2 50 change specs on second device

8

8 148 2 man crew - 2 hours

Max. 6 

Points

2

3

6 0 m0.0.3 ef9 - broan qtxe110s is 0.7 sone, and 

broan qtxe080 is 0.3 sone in powder room

8

10

15

15 700 design and installation of "clean air circulation" 

1/3 fresh air supply - 2/3 cold air return

17

8

3

Mandatory

0 0 zone 2

10

15

10 not realistic w/ slab on grade

3

3 0 included in 902.2.1

3

5

2

2 250 specify, and verify

2

2 0 specify, and verify

2

2 0 specify, and verify

2 2 0 specify, and verify

902.4 HVAC system protection. One of the following HVAC system 

protection measures is performed: 

(1) HVAC supply registers (boots), return grilles, and rough-ins are 

covered during construction activities to prevent dust and other 

pollutants from entering the system. 

(2) Prior to owner occupancy, HVAC supply registers (boots), return 

grilles, and duct terminations are inspected and vacuumed. In 

addition, the coils are inspected and cleaned and the filter is replaced 

if necessary. 

902.5 Central vacuum systems. Central vacuum system is installed 

and vented to the outside.

(b) An active radon system is installed.

902.3(2) Buildings located in Zone 2. 

(a) A passive radon system is installed. 

(3) Heat-recovery ventilator.

(4) Energy-recovery ventilator.

902.2.2 Ventilation airflow is tested to achieve the design fan airflow 

at point of exhaust in accordance with Appendix B. (Points must be 

claimed in 902.2.1 to claim points in 902.2.2) 

902.2.3 MERV filters 8 or greater are installed on central air systems. 

Designer or installer is to verify that the HVAC equipment is able to 

accommodate the greater pressure drop of MERV 8 filters. 

(1) Exhaust or supply fan(s) ready for continuous operation and with 

appropriately labeled controls.

(2) Balanced exhaust and supply fans with supply intakes located in 

accordance with the manufacturer's guidelines to not introduce 

polluted air back into the building. 

(a) A passive radon system is installed. 

902.3 Radon control. Radon control measures are in accordance 

with ICC IRC Appendix F. (Zones are defined in Figure 9(1). 

902.3(1) Buildings located in Radon Zone 1 have a radon system 

installed.

902.1.3 Kitchen range, bathroom, and laundry exhaust are verified to 

specification. Ventilation airflow at the point of exhaust is tested to a 

minimum of 100 cfm intermittent or 25 cfm continuous for kitchens, 

and 50 cfm intermittent or 20 cfm continuous 

(1) ENERGY STAR, or equivalent, fans (Points awarded per fan) 

(2) ENERGY STAR, or equivalent, fans operating at or below 1 sone 

(Points awarded per fan)

902.2. Building ventilation systems. 

902.2.1 One of the following whole building ventilation systems is 

implemented and is in accordance with the specifications of Appendix 

B. (Points must be claimed in 902.2.1 to claim points in 902.2.2.

1) for first device

902.1.2 Bathroom and/or laundry exhaust fan is provided with an 

automatic timer and/or humidistat: 

2) for each additional device

902.1.4 Exhaust fans are ENERGY STAR as applicable. 

903 Moisture Management: Vapor, Rainwater, Plumbing, HVAC

902.6 Living space contaminants. The living space is sealed to 

prevent unwanted contaminants.

(1) Attic access, knee wall door, or drop down stair is caulked, 

gasketed, or otherwise sealed. 

(2) All penetrations (e.g., top plates, HVAC register boots, recessed 

can lights, are sealed in the following areas:

(b) Wall

(c) Floors

(a) Attic/ceiling
284 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

0 0

Mandatory 0 0

3

3 75

6

Mandatory

0 0 do not apply

10

8

2 Points 

2 0 Put into specs.

Mandatory 

2 Points

2 0 add to supervisors duties - to verify

4

4 0 add to supervisors duties - to verify

2

2 0 add to supervisors duties - to verify

2

2 0 Put into specs.

2

5 5 0

Mandatory

0 0

2

8 Points zone - 3C

903.4.1(3) The moisture content of lumber is sampled to ensure it 

does not exceed 19 % prior to the surface and/or wall cavity 

enclosure. 

903.3.1(2) Damp-proof walls are provided below finished grade. 

Joints of vapor retarder overlap a minimum of 6 inches and are taped.

903.4.2 Moisture content of subfloor, substrate, or concrete slabs is 

in accordance with the appropriate industry standard for the finish 

flooring to be applied. 

(2) 6-mil polyethylene sheeting, lapped a minimum of 6 inches and 

taped at the seams. 

903.4 Moisture control measures. 

903.4.1(1) Building materials with visible mold are not installed or are 

cleaned or encapsulated prior to concealment and closing.

903.3.2 Crawlspace that is built as a conditioned area is sealed to 

prevent outside air infiltration and provided with conditioned air at a 

rate not less than 0.02 cfm per square foot of horizontal area and one 

of the following is implemented:

(1) A concrete slab over lapped 6 mil polyethylene or polystyrene

903.4.1(2) Walls are not enclosed (e.g. with drywall) if the insulation 

has a high moisture content. Wet insulation products are dry before 

enclosing. 

(2) Central HVAC system equipped with additional controls to operate 

in dehumidification mode.

903.5.2 Cold water pipes in unconditioned spaces are insulated to a 

minimum of R-4 with pipe insulation or other covering that adequately 

prevents condensation.

903.7 Relative Humidity. In climate zones 1A, 2A, 3A, 4A, and 5A as 

defined by Figure 6(1), equipment is installed to maintain relative 

humidity (RH) at or below 60% using one of the following: 

903.9.1 In “Warm-Humid” climates as defined by Figure 6(1) 

equipment is installed to maintain Relative Humidity (RH) at or below 

60% using one of the following:

(1) Additional dehumidification system(s)

903.6(1) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated to a 

minimum of R-6. Outdoor air supplies to ventilation systems are 

insulated to a minimum of R-6.

903.6(2) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated to a 

minimum of R-8. Outdoor air supplies to ventilation systems are 

insulated to a minimum of R-8.

903.2.1 A capillary break and vapor retarder are installed at all 

concrete slabs in accordance to the following:

1) A minimum 4-inch thick bed of 1⁄2 inch diameter or greater clean 

aggregate, covered with polyethylene or polystyrene sheeting in direct 

contact with the concrete slab, with the sheeting joints lapped in 

accordance with Section 903.3. (or)

b. In Dry climate locations, as defined by Figure 6(1), polyethylene 

sheeting is not required unless required for radon resistance (Section 

902.3).

903.2.2 Add a capillary break on footing to prevent moisture migration 

into foundation wall. 

903.3.1(1) Minimum 6-mil vapor retarder installed on the crawl space 

floor and extended up the wall sufficient to allow the material to be 

affixed with glue and furring strips. Joints of vapor retarder overlap a 

minimum of 6 inches and are taped.

903.3 Crawlspaces

903.5 Plumbing. 

903.5.1 Plumbing distribution lines are not installed in exterior wall 

cavities.

a. In areas with free-draining soils, identified as Group 1 in the ICC 

IRC by a certified hydrologist, soil scientist, or engineer through a site 

visit, a gravel bed or geotextile matting is not required.

903.5.3 Plumbing is not installed in unconditioned spaces.

Modification for 1&2:

903.0 Intent. Moisture and moisture effects are controlled. 

903.1 Tile backing materials installed under tiled surfaces in wet areas 

are in accordance with ASTM C1178, C1278, C1288, or C1325. 

2) A minimum 4-inch thick uniform layer of sand, overlain with a layer 

or strips of geotextile drainage matting, covered with polyethylene 

sheeting, with the sheeting joints lapped according to Section 903.3.

903.2 Capillary breaks
APPENDIX B 285

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

2 72 Bath fans are already triggered by 

humidistats.

2

Base Pts.

0 0 8 950 6 94 0 0 0 0 Ch. 10 Subtotal 

1 point per 2 

items

0 100 Estimated 40 hours staff. O/H removed for 

separate reporting as one time cost. This 

reflects staff time to assemble.

Mandatory

0.5 850 $200 certification fee and 4 hours of 

professional time.

Mandatory

0.5 0 Included with 1001.1

Mandatory

0.5 0

0.5 0

0.5 0

0.5 0

0.5 0

0.5 0

0.5 0

0.5 0

0.5 0

0.5 0

0.5 0

0.5 0

0.5 0

0.5 0

Mandatory

1002 Education Training of Building Owners 

on Building Operation And Maintenance for 

One- and Two-Family Dwellings or Multi-Unit 

Buildings

(3) the EPA publications “Reducing Lead Hazards When Remodeling 

Your Home” and “Asbestos in Your Home: A Homeowner’s Guide”

CHAPTER 10: OPERATION, MAINT., AND BUILDING OWNER 

EDUCATION

Building Owners’ Manual for One- and Two-Family Dwellings

(Points awarded for mandatory and non-mandatory items)

(14) List of common hazardous materials often used around the 

building and instructions for proper handling and disposal of these 

materials.

(15) Information about organic pest control, fertilizers, de-icers, and 

cleaning products.

(16) Information about native landscape materials and/or those that 

have low-water requirements.

(17) Information about methods of maintaining the building’s relative 

humidity in the range of 30-60%.

(18) Instructions for inspecting the building for termite infestation.

(19) Instructions for maintaining gutters and downspouts and 

importance of diverting water at least five feet away from foundation.

(13) Maintenance checklist.

(10) Where frost protected shallow foundations are used, notify owner 

of precautions, including instructions not to remove or damage 

insulation when modifying landscaping, to provide heat to the home as 

required by the IRC/IBC, and to keep base materials 

(11) A list of local service providers that offer regularly scheduled 

service and maintenance contracts to assure proper performance of 

equipment and the structure (e.g., HVAC, water heating equipment, 

sealants, caulks, gutter and downspout system, showe

904 Innovative Practices

904.1 A humidity monitoring system is installed with a mobile base 

unit that displays a reading of temperature and relative humidity at the 

base unit with a minimum of two remote units. One remote unit that is 

placed permanently inside the conditioned space in a central location, 

excluding attachment to exterior walls, and another remote unit is 

placed permanently outside of the conditioned space.

904.2 Kitchen exhaust unit(s) that equal or exceeds 400 cfm, and 

make-up air is provided.

Renovations Note: A building owners’ manual that includes the 

following:

(1) all mandatory items listed in Section 1001.1

(1) A green building program certificate or completion document.

(8) Local public transportation options (if applicable).

(9) A diagram showing the location of safety valves and controls for 

major building systems.

(2) List of green building features (can include the national green 

building checklist).

(3) Product manufacturer’s manuals or product data sheet for 

installed major equipment, fixtures and appliances. If product data 

sheet is in the binder, manufacturer’s manual shall may be attached to 

appliance in lieu of inclusion in the binder. 

(4) Information on local recycling programs.

(5) Information about available local utility programs that purchase a 

portion of energy from renewable energy providers. 

(12) A photo record of framing with utilities installed. Photos taken 

prior to installing insulation, clearly labeled, and included as part of the 

homeowner’s binder.

(20) A narrative detailing the importance of maintenance and 

operation in retaining the attributes of a green-built building.

1001.0 Intent. Information on the building’s use, maintenance and 

green components is provided. 

(6) Explanation of the benefits of using energy efficient lighting 

systems (e.g., compact fluorescent light bulbs, light emitting diode 

(LED)) in high usage areas.

(7) A list of practices to conserve water and energy.

1001.1 A homeowner’s binder is provided that includes the following, 

as available and applicable:

(2) a minimum of six of the non-mandatory items listed in Section 

1001.1
286 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

365 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

6

6 94 Walk thru orientation should take about 2 

hours and be standard.

(1) HVAC filters.

(2) Thermostat operation and programming.

(3) Lighting controls.

(4) Appliances and settings.

(5) Water heater settings.

(6) Fan controls.

1003 Construction, Operation and 

Maintenance Manuals and Training for MultiUnit Buildings

1

1003.1 Building construction manual. A building construction

manual, including five or more of the following, is compiled and

distributed in accordance with Section 1003.0.

1003.0 Intent. Manuals are provided to the responsible parties 

(owner, management, tenant, and/or maintenance team) regarding 

the construction, operation, and maintenance of the building. Paper or 

digital format manuals are to include information regarding those 

aspects of the building’s construction, maintenance, and operation 

that are within the area of responsibilities of the respective recipient. 

One or more responsible parties are to receive a copy of all 

documentation for archival purposes.

1002.1 Training of building owners. Building owners/occupants are

familiarized with the green building goals and strategies implemented

and the impacts of the occupants’ practices on the costs of operating

the building. Training is provided to the responsible party(ies)

regarding all equipment operation and control systems. Systems

include, but are not limited to, the following:
APPENDIX B 287

APPENDIX B 

GREEN SCORING & COST

3 — Climate Zone #4

A. Richmond, Virginia
288 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Building Comparison Rated 2/4/2010

18' SFD, Richmond VA

ANSI-ICC-700-2008 National Green Building StandardTM

Lot 41.6 x 140' 5,824 Silver Gold Emerald

House 18 x 50' 1,695 sf Required Actual Required Actual Required Actual Required Actual KEY

2-story on cond. crawl 5. Lot Design... 39 68 66 68 93 95 119 122 Points are Co-Dependant on at

Density per acre at this lot size 15.0 6. Resource Efficiency 45 78 79 82 113 114 146 147 least one other cell

7. Energy Efficiency 30 70 60 102 100 155 120 189 Overhead Cost - Dependant on

8. Water Efficiency 14 14 26 38 41 53 60 61 subdivision size

9. Indoor Env. Quality 36 111 65 131 100 139 140 165

10. Operation, Maintenance... 8 9 10 15 11 15 12 15

Additional Points 50 100 100 100

Total 222 350 406 436 558 571 697 699

0 Points Cost Points Cost Points Cost Points Cost

Chapter 5 68 0 68 0 95 1,590 122 6,256

Chapter 6 78 0 82 0 114 0 147 3,728

#DIV/0! Chapter 7 70 0 102 6,384 155 13,009 189 19,528

Chapter 8 14 0 38 525 53 525 61 907

Chapter 9 111 0 131 44 139 44 165 1,840

Chapter 10 9 950 15 1,044 15 1,044 15 1,044

Total 350 950 436 7,997 571 16,212 699 33,303

331 Est. House Cost 7,047 8,215 17,091

% of Estimated Cost

0.56 4.72 9.56 19.65

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

Cost/Point 0 #DIV/0! #DIV/0! 59 173

Rating 68 0 0 0 0 0 27 1,590 27 4,666 Ch. 5 Subtotal Base

4

5

5 0

5

3

3 0 mapquest

3

3 0 mapquest

3

3 0 mapquest

4

4 754 Minimum 2 person team for 1 day. Varies 

with size of operations.

Lot Design

5

6

4

4

4 627 Mandatory in some states. Overhead cost of 

training a superintendent in a program like 

MD's Green Card . 8 hrs. plus $250 

ANSI National Green Building StandardTM Baseline Bronze Silver Gold

Bronze

Cost per SF ($)

CH. 5 LOT DESIGN, PREPARATION, AND DEVELOPMENT

500.0 Intent. This section applies to lot development for the eventual 

construction of residential buildings, multi-unit buildings, or additions 

thereto that contain dwelling units. The buildings on the lot earn their 

own performance level by complying with the provisions of Sections 

303, 304, or 305.5, as applicable.

501.1 The lot is selected to minimize environmental impact by one or 

more of the following:

(1) An infill lot is selected.

(2) A greyfield lot or an EPA-recognized brownfield lot is selected.

501.2 Mass Transportation. A range of mass transportation choices 

are promoted by one or more of the following:

(1) A lot is selected within one-half mile of pedestrian access to a 

mass transit system or within five miles of a mass transit station with 

provisions for parking.

(2) Walkways, street crossings, and entrances designed to promote 

pedestrian activity are provided. New buildings are connected to 

existing sidewalks and areas of development.

(3) Addition and Renovation Note: A renovation or addition project is 

implemented. (Points awarded for using an existing building and 

infrastructure.)

(3) A lot is selected within one-half mile of six or more community 

resources (e.g., recreational facilities (such as pools, tennis courts, 

basketball courts), parks, grocery store, post office, place of worship, 

community center, daycare center, bank, school, restaurant, 

medical/dental office, laundromat/dry cleaner.) 

502.1 A knowledgeable team is established and team member roles 

are identified with respect to green lot design, preparation, and 

development. The project’s green goals and objectives are written 

into a mission statement. 

503.0 Intent. The lot is designed to avoid detrimental environmental 

impacts first, minimize any unavoidable impacts, and mitigate for 

those impacts that do occur. The project is designed to minimize 

environmental impacts and to protect, restore, and enhance the 

natural features and environmental quality of the lot. (To be awarded 

points allocated for design, the intent of the design shall be 

implemented.) 

503.1 Natural resources are conserved by one or more of the 

following:

502 Project Team, Mission Statement, and Goals

(1) A natural resources inventory is completed under the direction of 

a qualified professional. 

(2) A plan is implemented to conserve the elements identified by the 

resource inventory as high priority resources. 

(3) Items listed for protection in the resource inventory plan are 

protected under the direction of a qualified professional. 

(4) Basic training in tree or other natural resource protection is 

provided for onsite supervisor.

Emerald

Cummulative
APPENDIX B 289

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

3

1 Additional 

Point

Unknown, no grading plan was provided.

(a) Less than 25% 2

(b) 25 to 75% 3

(c) Greater than 75% 4

5

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

6

4

2 Additional 

Points

5 5 0 Virginia State Soil Erosion & Control 

Handbook to be followed

5

5

5 0

6

6

6 754 Minimum 2 person team for 1 day. Varies 

with size of operations.

Less than 15% impervious structure/driveway 

to land

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

(4) A minimum of 75% of the roof is vegetated 

(green roof) 3

5

5 520 Simple implementation on infill lot. Allowed 

1/2 day for professional to develop plan that 

includes noted actions. Include 503.5(8) and 

503.6 in plan. Plan needed for 801.7.4 points.

4

4 504 See 503.5(1) for plan cost. Cost of several 3 

shrubs, 2 trees and hydroseed.

(a) Lot is 0% turf 4

(b) Greater than 0% to less than 25% 3

(c) 25% to less than 50% 2 2 678 28% mulched.

(d) 50% to 75% 1

5

5 535 See 503.5(1) for plan cost. 3 trees and 5 

shrubs. 

503.3 Soil disturbance and erosion are minimized by one or more 

of the following: (Also see Section 504.3) (Points must be taken here 

to claim points in 504.1)

(3) All or a percentage of impervious surfaces are minimized and 

permeable materials are used for driveways, parking areas, 

walkways, and patios.

(a) tunneling instead of trenching

(b) use of smaller (low ground pressure) equipment or geomats to 

spread the weight of construction equipment

(1) Natural water and drainage features are preserved and used.

(2) A storm water management plan is developed and implemented 

that minimizes concentrated flows and simulates flows found in 

natural hydrology, e.g., vegetative swales, French drains, wetlands, 

drywells, and rain gardens.

(1) Construction activities are scheduled to minimize length of time 

that soils are exposed.

(2) Utilities are installed using one or more alternative means:

(3) Limits of clearing and grading are demarcated on the plan.

503.4 Storm Water Mgmt. Storm water is managed using one or 

more of the following low impact development techniques:

(6) Ongoing maintenance of vegetation during construction is in 

accordance with TCIA A300.

(5) All tree pruning on site is conducted by a Certified Arborist.

(d) placement of utilities under paved surfaces instead of yards.

(c) shared utility trenches or easements

Addition and Renovation Note: section 503.1 applies to additions that 

increase building footprint on the lot; and to renovations that include 

landscape, hardscape, and outdoor living area. (Additional points 

awarded for each strategy implemented.)

(3) All or a percentage of roads and parking are aligned with natural 

topography to reduce cut and fill.

(2) Hydrological/soil stability study for steep slopes is completed and 

used to guide the design of all buildings on the site.

Addition and Renovation Note: Section 503.2 applies to additions that 

increase building footprint on the lot; and to renovations that include 

landscape, hardscape, and outdoor living area. (Additional points 

awarded for each strategy implemented.)

503.2 Slope disturbance is minimized by one or more of the 

following: (Points awarded only if there are developable steep 

slopes on the lot.)

(1) All or a percentage of development on steep slopes is avoided.

(4) Long-term erosion effects are reduced through the design and 

implementation of terracing, retaining walls, landscaping, and 

restabilization techniques.

(5) Underground parking uses the natural slope for parking entrances.

503.5 Landscape plan is developed to limit water and energy use 

while preserving or enhancing the natural environment. 

(1) A plan is formulated to restore or enhance natural vegetation that 

is cleared during construction. Landscaping is phased to coincide with 

achievement of final grades to ensure denuded areas are quickly 

vegetated.

(2) Turf grass species, other vegetation, and trees are selected that 

are native or regionally appropriate for local growing conditions.

(3) A percentage or all turf areas are limited. 

(4) Plants with similar watering needs are grouped (hydrozoning).
290 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

5

5 0 See 503.5(1) for plan cost. Plant 3 trees from 

503.5(2) to provide shade. See 505.2(1)

4

4 360 See 503.5(1) for plan cost. Add 3 trees.

3

3 0 page A1.0 gerneral site notes 7. All woody 

debris..ground into mulch for use in planted 

areas

4

4 0 See 503.5(1)

4

4 175 See 503.5(1). Include additional 5 shrubs.

6

3 3 0

3

4 4 0

7

10

504 Lot Construction

4

4 1,130 3 days for one person to supervise. 

3

3 0 A8.0 division 2.9. protect trees, 

vegetation...construction fence...drip line

4

4 0 A8.0 division 2.9. protect trees, 

vegetation...construction fence...drip line

4

5 5 0 Note: Specs indicate that there is a grading 

plan that was not submitted.

5

5 0 A8.0 division 2.9. protect trees, 

vegetation...construction fence...drip line

5

5 0 A8.0 division 2.2. implement erosion&...during 

construction

5

5 0 A8.0 division 2.11. strip topsoil...cover pile 

with tarp

3

3 0 z A8.0 division 2.7

3

See 503.1(6)

3 3 220 Soil ammendment.

See 504.1(2) and 503.3(2)

505 INNOVATIVE PRACTICES

4

Plan parking at front or side curb in alley 

instead of additional pad on lot.

4

(3) 21 or greater dwelling units per acre

(7) Onsite tree trimmings or stump grinding of regionally appropriate 

trees are used to provide protective mulch during construction and 

cleared trees are recycled as saw lumber or pulp wood.

503.6 Wildlife habitat. Measures are planned that will support 

wildlife habitat.

503.7 Mixed use development is incorporated.

(1) Environmentally Sensitive Areas are avoided.

(5) Species and locations for tree planting are identified that will 

provide summer shading of streets, parking areas, and buildings to 

moderate temperatures. 

(6) Vegetative wind breaks or channels are designed as appropriate 

for local conditions.

(1) 7 to less than 14 dwelling units per acre (4047 m2

)

503.8 Environmentally Sensitive Areas.

(2) Compromised Environmentally Sensitive Areas are mitigated or 

restored.

(8) An integrated pest management plan to minimize chemical use in 

pesticides and fertilizers is developed.

503.9 Density. The average density on a net developable area basis 

is: 

(2) 14 to less than 21 dwelling units per acre

(2) Trenching, significant changes in grade, and compaction of soil 

and critical root zones in “tree save” areas are avoided.

(3) Sediment and erosion controls are installed and maintained in 

accordance with the storm water pollution prevention plan (SWPPP), 

where required.

(3) Damage to designated existing trees and vegetation is mitigated 

during construction through pruning, root pruning, fertilizing, and 

watering.

504.3 Soil disturbance and erosion. Onsite soil disturbance and 

erosion are minimized by one or more of the following: (also see 

section 503.3)

(1) Limits of clearing and grading are staked out.

504.2 Trees and vegetation. Designated trees and vegetation are 

preserved by one or more of the following:

(2) “No disturbance” zones are created using fencing or flagging to 

protect vegetation and sensitive areas from construction activity. 

504.0 Intent. Environmental impact during construction is avoided to 

the extent possible; impacts that do occur are minimized, and any 

significant impacts are mitigated.

504.1 Onsite supervision and coordination is provided during 

clearing, grading, trenching, paving, and installation of utilities to 

ensure that specified green development practices are implemented 

(Also see Section 503.3.)

(8) Utilities are installed using one or more alternative means such as: 

(1) Fencing or equivalent to protect trees and other vegetation is 

installed.

(4) Topsoil is stockpiled and stabilized for later use to establish 

landscape plantings.

(5) Soil compaction from construction equipment is reduced by 

distributing the weight of the equipment over a larger area (laying 

lightweight geogrids, mulch, chipped wood, plywood, OSB, metal 

plates, or other materials capable of weight distribution in the pathway 

of the equipment).

(6) Disturbed areas that are complete or to be left unworked for 

greater than 21 days are stabilized within 14 days using methods as 

recommended by the EPA or in the approved storm water pollution 

prevention plan (SWPPP), where required.

(7) Soil is improved with organic amendments and mulch.

5

tunneling instead of trenching, use of smaller equipment, use of low 

ground pressure equipment, use of geomats, shared utility trenches or 

easements. 

505.0 Intent. Innovative lot design, preparation and development 

practices are used to enhance environmental performance. Waivers 

or variances from local development regulations are obtained and 

innovative zoning practices are used to implement such pract

505.1 Driveways or parking areas are shared. Waivers or variances 

from local development regulations are obtained to implement such 

practices as applicable. In a multi-unit project, parking capacity is not 

to exceed the local minimum requirements.

505.2 Heat Island Mitigation. Any combination of the following 

strategies are provided for a minimum of 50% of the horizontal 

surface area of the hardscape:
APPENDIX B 291

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

See 503.3(5). Complies but points taken in 

part 2 aren't available here.

4 0 Concrete parking pad qualifies as 100% of 

hardscape excepting house footprint.

Base Pts.

78 0 0 0 4 0 32 0 33 3,728 Ch. 6 Subtotal 

Cost/Point 0 #DIV/0! 0 0 113

15

12 1,656

9 9

6

Mandatory

1 Addt'l Point

3 Addt'l Point

6 Add'l Points

1 Addt'l Point

3 pts per 

system (9 pts 

max)

9 0

Floors, walls, and roof at 24"oc with I-joists 

and open web floor truss, single top plates, 

trusses

3 30

Floors - 4.5 sheets across 6.25 sheets in 

length (18x50)

3 3 0

Wall precuts can be used for 1st and 2nd 

3 30

18x50 with nominal slope

3

1

4

4 1,040

Have suppliers prepare use reports with their 

bid at no charge for joists, wall studs and 

rafters. Allowed 1days of professional time to 

prepare sheathing layouts for prints. O/H.

 

(1) Floor system. 

4 4 0 Estimated no premimium for precuts, 18' 

lengths. 2 flr is open web floor joists

(2) Wall system. 

4 4 0 These should have been shipped as precuts 

or panels

(3) Roof system. 4 4 0

13

13

Max 8 

points

(1)first stacked story 4 4 0

(2) for each additional story 2

Max 12 

points

5

(a) The total area of the existing building or dwelling unit is less than 

or equal to 2500 sf.

(a) The total area of the existing building or dwelling unit is greater 

than 2500 sf.

(5) manufactured home construction for the entire building located 

above grade.

601.3 Building dimensions and layouts are designed to reduce 

material cuts and waste.

(1) When used for at least 80% of floor area

(3) When used for at least 80% of roof area 

(2) When used for at least 80% of wall area

(4) When used for at least 80% of cladding or siding area

(5) When used for at least 80% of penetrations or trim area

601.4 Detailed framing or structural plans, material quantity lists and 

onsite cut lists for framing, structural materials, and sheathing 

materials are provided.

Additions less than or equal to 75% of existing building. Where 

the addition area is less than or equal to 75 percent of the existing 

buidling or dwelling unit area, points are awarded as follows:

(1) The existing structure is 50% to 75% of total building or dwelling 

unit area.

(2) The existing structure is 76% to 99% of total building or dwelling 

unit area.

Renovation Note: When renovations increase the total existing 

building or dwelling unit area by 1 percent or less, points are awarded 

as follows:

(5) Greater than 4,000 square feet (373 m2

)

Multi-Unit Building Note: For a multi-unit building, use a weighted 

average of the individual unit sizes in qualifying for available points. 

601.2 Material Usage. Building-code-compliant structural systems 

or advanced framing techniques that optimize material usage are 

implemented. Points awarded for each system or framing technique 

implemented.

For every 100 square feet over 4,000 sf, one point is to be added 

to Table 303, category 7 for each performance level. 

Addition Note: Additions more than 75% of existing building. 

Section 601.1 does not apply to additions with an area of more than 

75% of the area of the existing building or dwelling unit. 

(1) Shading of hardscaping: Shade from existing or new vegetation is 

provided (within five years) or from trellises. Shade of hardscaping is 

to be measured on the summer solstice at noon.

(2) Light colored hardscaping: Horizontal hardscaping materials are 

installed with a solar reflectance index of 29 or greater. 

601.1 Conditioned floor area, as defined by ICC IRC calculated in 

accordance with ANSI Z765, is limited. Dwelling unit size is to be 

601 Quality of Construction Materials and Waste

601.0 Intent. Design and construction practices that minimize the 

environmental impact of the building materials are incorporated; 

environmentally efficient building systems and materials are 

incorporated; and waste generated during construction is reduc

(1) Less than or equal to 1,000 square feet

(2) Less than or equal to 1,500 square feet

(3) Less than or equal to 2,000 square feet

(4) Less than or equal to 2,500 square feet

601.7 Site applied finishing materials. Building materials or 

assemblies that do not require additional site applied material for 

finishing are utilized. 

(1) 90% or more of the installed material or assembly listed below:

601.5 Pre-cut or pre-assembled components, or panelized or precast 

assemblies are utilized for 90% for the following system or building.

601.6 Stories above grade are stacked, such as in 1 1/2 and 2 story 

or greater structures. The area of the upper story shall be at least 

50% of the area of the story below, based on areas with a minimum 

ceiling height of 7 feet. 

(4) modular construction for the entire building located above grade.

CHAPTER 6: RESOURCE EFFICIENCY
292 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

5

pre finished hardi plank siding

5 vinyl windows

2 exterior porch is composite deck

3

Pier foundation.

4

(1) Adobe

(2) Concrete/Masonry

(3) Logs 

(4) Rammed earth

Maximum 

number of 

points 5 

(1) Installing a porch roof or awning.

(2) Extending the roof overhang.

(3) Recessing the exterior door.

Main entrance door 3 3 0

Additional covered door assembly 1 1 0

4

Inches Rainfall*

Eave Overhang 

(Inches)

Rake Overhang 

(Inches)

Less than 20 12 12

21 to 40 12 12

41 to 70 18 12 4 265 43.9" Extend overhangs by 9" and 4"

More than 70 24 12

0

1

Mandatory 0 Not applicable.

4

3 3 0

4

4 162

Plans indicate gutters and downspouts; cost is 

for 4 extensions and fold back elbows.

Mandatory

4

Plans require borate treated wood; unspecific 

about location.

2

(c) Window, skylight, and door assemblies not requiring paint or stain 

on exterior and/or interior surfaces.

(d) Wall coverings or systems not requiring paint or stain or other type 

of finishing application.

(a) Pigmented, stamped, decorative, or final finish concrete or 

masonry.

(2) 50% to less than 90% of the installed building material or 

assembly listed below:

(b) Trim not requiring paint or stain.

602 Enhanced Durability and Reduced Maintenance

601.8 Foundations such as frost-protected shallow foundations, pier 

and pad foundations, post foundations and other similar foundation 

types are designed and constructed.

601.9 One or more of the following above grade wall systems that 

provide sufficient structural and thermal characteristics are used for at 

least 75% of the gross exterior wall area of the building: 

Table 602.2

Minimum Roof Overhang for One- & Two-Story Buildings

602.2 Roof overhangs, based on inches of rainfall in Table 602.2, are 

provided over at least 90% of exterior walls to protect the building 

envelope.

602.0 Intent. Design and construction practices are implemented that 

enhance the durability of materials and reduce in-service 

maintenance.

602.1 Entries at exterior door assemblies, inclusive of side lights, are 

covered by one of the following methods below to protect the building 

from the effects of precipitation and solar radiation. A projection factor 

of at least 0.375 is provided. Eastern and western facing entries in 

Climate Zones 1, 2, and 3, as determined in accordance with Figure 

6(1), shall have a projection factor of at least 1.0 unless otherwise 

protected from direct solar radiation by other means (e.g. screen wall, 

vegetation).

602.5 A gutter and downspout system with extensions, or splash 

blocks and effective grading, are provided to carry water at least 5 

feet away from perimeter foundation walls. 

602.3 Foundation Drainage

602.3.1 Where required by the IRC/IBC for habitable and usable 

spaces below grade, exterior drain tile is installed.

Addition Note: Section 602.2 applies to the new construction portion 

of additions. 

Renovation Note: Section 602.2 applies to renovations that alter the 

existing roof.

602.8 Termite-resistant materials are used as follows: 

(1) In areas of slight to moderate termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, floors, 

concealed roof spaces not accessible for inspection, exterior decks, 

and exterior claddings within the first 2 feet above the top of the 

foundation. 

602.7 Termite barrier. Continuous, physical,foundation termite 

barrier used with or without low toxicity treatment is installed in 

geographical areas that have subterranean termite infestation 

potential determined in accordance with Figure 6(3).

602.6 Finish grade at all sides of building is sloped to provide a 

minimum of 6 inches of fall within 10 feet of the edge of the building. 

Where lot lines, walls, slopes or other physical barriers prohibit 6 

inches of fall within 10 feet, the final grade 

602.3.2 Interior and exterior foundation perimeter drains are installed 

and sloped to discharge to daylight, dry well, or sump pit.

602.4 Drip edge is installed at eaves and gable roof edges.
APPENDIX B 293

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

6

Heavy termite area.

Mandatory

0 0 Complies. 

Mandatory

0 0

Not applicable.

4 Not applicable.

(1) Rubberized coating, or

(2) Drainage mat.

6

6 0 A5.1 and A5.2

(2) Roof valleys.

3

Note: Roof indicates fiberglass shingles, but 

slope isn't sufficient.

(2) A green (landscaped) roof system.

3

3 58 Include an under cabinet recycling container 

and back porch bin.

(2) Compost facility provided on-site. 3 3 72

 1 (Max 12 

points)

3

4

4 0 A8.0 notes 1 construction and ...to be 

recycled or... to the maximum extent possible

Points per Table 

604.1

Material Percentage Recycled Content Per 2 Minor Per 2 Major

25% - 50% 1 2

50% - 75% 2 4 Fibercement siding & aggregate at 

construction entrance for minors.

75% 3 6 9 0 Gypsum board and cellulose insulation. Note: 

specify correct gypsum board.

6

6 989 Estimate is one day for set-up and one 

hour/week for record keeping. Costs of 

removal assumed even for each method. 90 

day cycle time.

7

602.12 Flashing details are shown on plans and flashing is installed at 

all of the following locations, as applicable:

(1) Around exterior fenestrations, skylights and doors.

(3) Deck/balcony to building intersections.

(2) In areas of moderate to heavy termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, floors, 

concealed roof spaces not acessible for inspection, exterior decks, 

and exterior claddings within the first 3 feet above the top of the 

foundation. 

(3) In areas of very heavy termite infestation probability (as defined by 

Figure 6(3)) for the foundation, all structural walls, floors, concealed 

roof spaces not accessible for inspection, exterior decks, and exterior 

claddings.

602.9 Where required by the IRC/IBC, a water-resistive barrier and/or 

drainage plane system is installed behind exterior veneer and/or 

siding. 

602.11 Enhanced foundation waterproofing is installed:

602.13 Roof Surfaces. A minimum of 90% of roof surfaces are 

constructed of one or both of the following:

(1) Products which meet the requirements of the ENERGY STAR® 

cool roof certification or equivalent.

(4) At roof-to-wall intersection and at roof-to-chimney intersections.

(5) A drip cap is provided above windows and doors that are not 

Flashed or protected by covering per Section 602.1.

603.1 Existing buildings and structures are reused, modified or 

deconstructed in lieu of demolition. (One point awarded for every 

200 sq. ft., 18.5m2, of floor area.)

603.2 Reclaimed and/or salvaged materials and components are 

used.Total material and labor cost of salvaged materials shall equal or 

exceed 1% of total construction costs.

602.14 Recycling. Occupant recycling is facilitated by one or more of 

the following methods:

(1) A built-in collection space in each kitchen and an aggregation/pickup space in a garage, covered outdoor space or other area for 

recycling containers.

603 Reused or Salvaged Materials 

603.0 Intent. Practices that reuse or modify existing structures, 

salvage materials for other uses, or use salvaged materials in 

building’s construction are implemented. 

604.1 Building materials with recycled content are used for at least 

two minor and/or two major components of the building.(NOTE: Does 

not specify PConsumer. Implication is that max. allowable is 4 

materials. 9 points is max. in scoring tool. Have to use highest % to 

receive max pts.)

Table 604.1

603.3 Scrap Materials. Facilitation for sorting and reuse of scrap 

building material (e.g. provide a central storage area or dedicated 

bins.)

604 Recycled-Content Building Materials

Recycled Construction Waste 

605.0 Intent. Waste generated during construction is recycled. 

Note: All waste classified as hazardous shall be properly handled and 

disposed. (Points not awarded for hazardous waste removal.) 

605.1 A Construction Waste Management Plan is developed, 

implemented, and posted at the jobsite with a goal of recycling or 

salvaging a minimum of 50% (by weight) of construction and landclearing waste.

Recycled Content

(a) Materials are ground or otherwise safely applied onsite as soil 

amendment or fill. At least 50% (by weight) of construction and landclearing waste shall be diverted from landfill.

605.2 Onsite recycling measures following applicable regulations and 

codes are implemented, such as the following:

602.10 In areas where there has been a history of ice forming along 

the eaves causing a backup of water, an ice barrier is installed at roof 

eaves and is extended at least 24” inside the exterior wall line of the 

building, in accordance with the IRC/IBC.
294 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Max 6

3

3 0 Recycle steel and copper wire. Net savings is 

anticipated. Note: If steel were ordered in 

precuts recycle drywall.

1 1 0 Recycle cardboard. 

Max 8

(b) engineered wood

(c) bamboo

(d) cotton

(e) cork

(f) straw

3

2 0 Wood cabinets and wood trim

6

6 0 engineered wood, osb walls, lvl beams

1 

(2 pts max)

(a) AFF American Tree Farm System®

606.2(1) Where a minimum of two certified 

wood-based products are used for minor 

elements of the building, such as all trim, 

cabinetry, or millwork. 3

3 350 Specify Masonite doors for FSC certified. 

Estimated added cost of $35/door. And 

kitchen cabinets at no cost.

4

4 566 Specify that front/rear decks/railing are 

certified wood.

6 pts. max.

2 0 2 225 Specify that OSB comes from a mill that 

complies. Identify another material that 

complies; allowed for added cost.

Max 9 points

3 0 Engineered wood - OSB floor and roof

(3) Roof or floor trusses. 6 0 Ijoists are engineered for less wood & roof 

truss components.

10 points max.

2 2 0

Use indigenous stone for driveway base.

2

8 0 Specify OSB from local mill. Deck lumber, 

windows and siding locally sourced.

(1) one type of material.

(2) For each additional material.

608.1 Indigenous materials are used for major elements of the 

building. 

609 Life Cycle Analysis

(i) other biobased materials with a minimum of 50 percent biobased 

content (by weight or volume).

608 Indigenous Materials

(d) Program for Endorsement of Forest Certification Systems 

(PEFC)

(e) Sustainable Forestry Initiative Program (SFI)

(6) Other product programs mutually recognized by PEFC

(2) Engineered wood or engineered steel products.

606.2(2) Where a minimum of two certified wood-based products are 

used in major elements of the building, such as walls, floors, or roof.

(1) Lighter, thinner brick with bed depth less than 3 inches, brick with 

coring above 25%, or both.

607 Resource-Efficient Materials

607.1 Products containing fewer materials are used to achieve the 

same end-use requirements as conventional products, including but 

not limited to: (3 points awarded for each material.)

606.1(1) At least two types of biobased materials are used, each for 

more than .5% of the project’s projected building material cost. 

Combined 8 pts Max

606.1(2) At least two types of biobased materials are used, each for 

more than 1% of the project’s projected building material cost. 

606.2 Wood-based products are certified to the requirements of one 

of the following recognized product programs: 

(b) Canadian Standards Association’s Sustainable Forest 

Management System Standards (CAN/CSA Z809)

606.3 Manufacturing Energy. Materials are used for major 

components of the building that are manufactured using a minimum of 

33% of the primary manufacturing process energy derived from 

renewable sources, combustible waste sources, or renewable energy 

credits (RECs). (2 points awarded per material.)

(b) Other methods approved by the NAHB Research Center (the 

Adopting Entity).

605.3 Recycled Construction materials: Construction materials (e.g., 

wood, cardboard, metals, drywall, plastic, asphalt roofing shingles, or 

concrete) are recycled offsite.

(1) A minimum of two types of materials are recycled.

(2) for each additional recycled material.

(g) natural fiber products made from crops (soy or corn-based)

(h) products with the minimum biobased contents of the USDA 7 CFR 

Part 2902

606.1(3) For each additional biobased material used for more than 

.5% of the project’s projected building material cost. 

606 Renewable Materials

606.0 Intent. Building materials derived from renewable resources 

are used.

606.1 The following biobased products are used. (Note: 606.1 and 

606.2 denote % of project mat'l cost req'd.)

(a) certified solid wood in accordance with Section 606.2

(c) Forest Stewardship Council (FSC)
APPENDIX B 295

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Max 15 points

(1) Per product/system comparison 3

(2) Whole building LCA analysis 15

Max 10 points

Base Pts. 70 0 0 0 32 6,384 53 6,625 34 6,519 Ch. 7 Subtotal 

Cost per 

point

0 #DIV/0! 199 125 192 

Performance path selected at all levels.

Performance path selected at all levels.

Mandatory Practices

Mandatory

0 0 

701.4.1 HVAC SYSTEMS

Mandatory

0 0 2006 IECC requirement. Complies A8.0.

Mandatory

0 0 

701.4.2 DUCT SYSTEM

Mandatory

0 0 Complies. A8.0 requires mastic seal and 

max. leakage of 5%.

Mandatory 0 0 Complies

Mandatory

0 0 Specify

Mandatory

0 0 

Mandatory

0 0 n/a

Mandatory

0 0 Complies.

701.4.3.3 WALLS 

Mandatory

0 0 See flashing details on plan.

Mandatory

0 0 SPF?

701.1.1 Minimum Performance Path Requirements. A building complying with 

Section 702 shall exceed the baseline minimum performance required by the IECC by 

15%, and shall include a minimum of two practices from Section 704.

609.1 A more environmentally preferable product or assembly for an 

application based upon the use of a Life Cycle Assessment (LCA) tool 

compliant with ISO 14044 or other recognized standards that 

compare the environmental impact of building materials, as

610 Innovative Practices

610.1 Manufacturer's environmental managment system 

concepts. Product manufacturer’s operations and business practices 

include environmental management system concepts and the 

production facility is ISO 14001 certified or equivalent. The aggregate 

value of building products from ISO 14001 certified or equivalent 

production facilities is at least 1% or more of the estimated total 

building materials cost. (1 point awarded for every percent.) 

701.1 Mandatory requirements. The building shall comply with either Section 702 

(Performance Path) or Section 703 (Prescriptive Path). Items listed as “Mandatory” in 

Section 701.4 apply to both the Performance and Prescriptive Paths.

CHAPTER 7: ENERGY EFFICIENCY

701.1.3 Alternative Bronze Level Compliance. As an alternative, any building that 

qualifies as an ENERGY STAR qualified home or equivalent achieves the Bronze Level 

for Chapter 7.

701.4.2.1 Ducts are sealed with tape complying with UL 181, mastic, 

gaskets, or an approved system as required by the ICC IRC (Section 

M1601.3.1, or ICC IMC Section 603.9) to reduce leakage.

701.2 Emerald Level Points. The Performance Path shall be used to achieve to the 

Emerald Level.

701.4.1.1 Space heating and cooling system/equipment shall be 

sized according to heating and cooling loads calculated using ACCA 

Manual J or equivalent. 

701.4.1.2 Where installed, as a primary heat source in the building, 

radiant or hydronic space heating system is designed using industryapproved guidelines (e.g. ACCA Manual J, GAMA H-22, or an 

accredited design professional's and manufacturer's recommen

701.3 A review by the Adopting Entity or designated third party shall 

be conducted to verify design and compliance with Chapter 7. 

701.1.2 Minimum Prescriptive Path Requirements. A building complying with 

section 703 shall obtain a minimum of 30 points from Section 703, and shall include a 

minimum of two practices from Section 704. 

(1) Insulation shall be installed in accordance with the manufacturer’s 

instructions or local code, as applicable.

701.4.3.2 FLOOR / FOUNDATION / CRAWLSPACE

701.4.3 INSULATION and AIR SEALING

701.4.2.2 Building cavities are not used as supply ducts. 

(2) Shafts (duct shaft, piping shaft/penetrations, flue shaft.) Openings 

to unconditioned space are fully sealed with solid blocking or flashing 

and any remaining gaps are sealed with caulk or foam. Fire-rated 

collars and caulking are installed where re

701.4.3.1 GENERAL Insulation and air sealing is in accordance with 

the following: 

(1) Floors (Including insulated floors above garages and cantilevered 

floors)

(2) Crawlspace. Where insulated, crawlspace wall insulation is 

permanently attached to the walls. Exposed earth in unvented 

crawlspaces is covered with continuous vapor retarder with 

overlapping joints taped or masticed. 

(b) Batt and loose-fill insulation is held in place by permanent 

attachments or systems in accordance with the manufacturer’s 

instructions.

(a) Insulation is installed to maintain permanent contact with the 

underside of the subfloor decking, enveloping any attached ductwork 

within the thermal envelope without compression or air gaps in the 

insulation. This practice does not apply to ducts or other mechanical 

equipment that are adjacent to the underside of the subfloor.

(1) Windows and Doors. Caulking, gasketing, adhesive flashing 

tape, foam sealant, or weatherstripping is installed forming a 

complete air barrier. 

(2) Band Joist and Rim Joists. Band and rim joists are insulated 

and air sealed.
296 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory 0 0 

N/a pier foundation.

A5/1 detail 12 shows a cont. seal gasket 

beneath plate.

Mandatory

0 0 N/a

Mandatory

0 0 

Mandatory

0 0 No access required.

Mandatory

0 0 

 1 Add'l Pt

Mandatory

0 0 plans A4.1

 2 Add'l Pts

701.4.4 FENESTRATION

Mandatory

zone 4 - installed - u0.35, shgc 0.40

Table 701.4.4.1

Fenestration Specifications

Climate Zones U-Factor SHGC

1 and 2 0.65 0.4

3 0.4 0.4

4 to 8 0.35 Any 0 0 

1 to 3 0.75 0.4

4 to 8 0.6 Any

702 Performance Path

Mandatory

Performance path.

(1) 15% 30 30 0 (30)

(2) 30%

60

60 6,384 (60) R-49 in ceiling, 1" foam sheathing, change 

window u-value to .30 from .35; reduce 

ACHnat by 50%; upgrade HVAC to 9.0 hspf 

from 7.7 and 16 SEER, and tankless water 

heater

(3) 50%

100 100 6,500 (100) Closed loop solar hot water w/tankless 

backup.

(4) 60%

120

120 6,072 R-60 attic; 2" of exterior foam, triple pane 

u=.25 windows, 25% infiltration improvement; 

18 SEER A/C; NOTE: hspf upgrades to 9.5

703 Prescriptive Path 

Points per Table 

703.1.1

Sect. 703 pts. 0

Practices 704 3

Zone 2 Zone 3

10% UA improvement 10 points 12 points

20% UA improvement 20 points 24 points

Zone 4 Zone 5-6

10% UA improvement 14 points 16 points

20% UA improvement 28 points 32 points

Zone 7-8

10% UA improvement 18 points

703.1 Building envelope. Where the total building thermal envelope 

UA is less than required by ICC IECC, Section 402.1.4, the total 

building thermal envelope UA is in accordance with Table 703.1.1. 

Table 703.1.1

Total Building Thermal Envelope UA

Climate Zone

(1) Attic access (except unvented attics). Attic access, knee wall 

door, or drop down stair is covered with insulation and gasketed. 

Knee wall door is insulated unit or is covered with insulation.

(b) Caulk or the equivalent is installed to seal the bottom plate of 

exterior walls.

(2) Recessed Lighting. Recessed light fixtures that penetrate the 

thermal envelope are airtight, IC rated, and sealed with gasket, caulk, 

or foam.

Renovation Note: Replace existing recessed lights that penetrate 

the thermal envelope with airtight, IC-rated recessed light fixtures that 

are sealed to drywall with gasket, caulk, or foam. (Additional point 

per fixture)

702.2 Energy efficiency features are implemented to achieve energy 

cost performance that exceeds ICC IECC by the following. A 

documented analysis using software in accordance with ICC IECC, 

Section 404, or ICC IECC Section 506.2 through 506.5, applied a

Renovation Note: Provide blocking or baffle at eaves to ensure 

ventilation over attic iinsulation.

702.1 Points from Section 702 (Performance Path) shall not be 

combined with points from Section 703 (Prescriptive Path).

(5) Exterior Architectural features. Code required building 

envelope insulation and air sealing is not disrupted at exterior 

architectural features such as stairs and decks. 

(a) Sill sealer, or other material that will expand and contract, shall be 

installed between foundation and sill plate.

(3) Between Foundation and Sill Plate Bottom Plate

(4) Skylights and kneewalls. Skylight shafts and knee walls are 

insulated to the same level as the exterior walls.

(3) Eave vents. Where ceiling/attic assemblies or designs have eave 

vents, baffles, or other means shall be utilized to minimize air 

movement into or under the insulation.

701.4.4.1 The NFRC-certified U-factor and SHGC windows, exterior 

doors, skylights, and tubular daylighting devices (TDDs) are in 

accordance with ENERGY STAR, or equivalent, or Table 701.4.4.1. 

Decorative fenestration elements with a maximum area of 15 sq

Skylights and TDDs 

(max. certified ratings)

Windows and Exterior Doors (maximum 

certified ratings)

701.4.3.4 CEILINGS AND ATTICS
APPENDIX B 297

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

20% UA improvement 36 points

 0 Add'l Pts

Mandatory 

0 Add'l Points

15

30

45

Points per Table 

703.1.2

Grade Points

1 15

2 10

3 0

Points per 

Table 703.1.3

Table 703.1.3

Exterior Mass Walls

3 in. to <6 in. 6 in.

Climate Zones 1, 2, 3, 4 except marine, and 5 

dry. 4 6

Climate Zones 4 marine, 5 except dry, and 6. 3 5

Climate Zones 7 and 8 0 0

703.2 Insulation & Air Sealing

15

(2) No third party verification performed. 3

703.2.1.1 GENERAL

(d) Air impermeable insulation.

703.2.1.1.2 Plumbing and Wiring 

703.2.1.3 WALLS

(1) Exterior walls behind the tub/shower are insulated and include an 

interior and exterior air barrier. (2) Air sealed type electrical outlet boxes are installed or the air barrier 

extends completely behind the boxes. Insulation is placed between (3) Duplex and townhouse construction: In the common walls 

between dwelling units (e.g., gypsum shaft wall) an air barrier is (4) Skylight shafts and knee walls are air sealed. Insulation on attic 

knee walls and skylight shafts are physically supported by stapling in 

703.2.1.1.3 Narrow cavities are filled and batts are cut to fit.

703.2.1.1.4 HVAC register boots that penetrate the building envelope 

are caulked or sealed to the subfloor or drywall. 703.2.1.1.5 Masonry fireplace equipped with gasketed doors, outside 

combustion air, and a chimney top damper. 703.2.1.2 Air barrier is installed at any exterior edge of insulation at 

floors, foundations, and crawlspaces including insulated floors above 

(4) Any exterior rigid insulation is tightly fitted or interlocking at the 

joints. 

(1) At a minimum, insulation is placed between the outside (ceiling, 

wall, or floor) and the pipes. (2) Batt insulation is split or cut to fit around wiring and plumbing.

(3) Sprayed insulation is installed to encapsulate pipes where the pipe 

temperature is 180 degrees F (82.2C) or less. Wiring is fastened in 

(ii) Continuous in the cavity without any unrepaired breaks.

(iii) air impermeable

(2) Voids or areas of incomplete fill (less than 30% of full thickness) 

are 2% or less of the insulated area. (3) Insulation is in substantial contact with sheathing materials on one 

or more sides.

(a) Any spray or rigid foam insulation with an air permeance of 0.02 

L/s-m2 or less at 75 Pa. (b) ICFs, SIPS, and other wall systems that provide their own air 

barrier, except at interfaces with other materials or assemblies, or (c) Spray foam that complies with the following: 

(i) continuously attached to the top, bottom and both sides of the 

cavity

703.2.1 Insulation and air sealing is installed in accordance with all of 

the following, as applicable: (1) Third party verification performed.

703.2.1.1.1 Air Barrier and Thermal Barriers

(1) Thermal insulation is installed in substantial contact with interior 

and exterior air barrier to provide continuous alignment of the 

703.1.2.4 Grade 3 installation is in accordance with the following:

(a) Standard insulation installation not in accordance with Grade 1 or 

Grade 2 criteria. 703.1.3 More than 75% of the above-grade exterior opaque wall area 

of the building is mass walls. 

Mass Construction

(c) Floor insulation over unconditioned basements is not required to 

be enclosed on six sides. (d) Ceiling insulation is not required to be enclosed when the 

insulation is installed in complete contact with the drywall or plywood (e) Eave baffles or equivalent construction is installed to prevent wind 

washing. (f) Installation with occasional installation defects is permitted: gaps 

around wiring, electrical outlets, plumbing and other intrusions; 

(a) A maximum of 2% of the surface area of insulation is missing. 

Compression or incomplete fill amounts to 10 percent or less, (b) In conditioned basement or crawlspace the following apply:

(i) insulation is installed in complete contact with the subfloor surfaces. 

(ii) Floor insulation over vented or ambient conditions is enclosed on 

six sides.

(f) Faced batt insulation is permitted to have side-stapled tabs, 

provided the tabs are stapled neatly with no buckling, and provided (g) ICFs, SIPs, and other wall systems that provide integral insulation 

comply with “Grade 1” insulation installation requirements where (h) “Grade 1” insulation must meet or exceed all requirements of 

“Grade 2” insulation. 703.1.2.3 Grade 2 installation is in accordance with the following:

(b) Compression or incomplete fill amounts to no more than 2% or 

less, presuming the compression or fill is at least 70% of the intended (c) Exterior rigid insulation shall have substantial contact with the 

structural framing members or sheathing materials, and is tightly fitted (d) Cavity insulation is split, installed, and/or fitted tightly around wiring 

and other services. (e) Exterior sheathing is not visible from the interior through gaps in 

the cavity insulation.

(b) Insulation is installed in accordance with the manufacturer’s 

instructions and/or industry standards. (c) Wall cavity insulation is enclosed on all six sides, and is in 

substantial contact with the sheathing material on one or more sides 703.1.2.2 Grade 1 installation in accordance with the following: 

(a) Insulation uniformly fills each cavity side-to-side and top-tobottom, without substantial gaps or voids around obstructions (such as 

Table 703.1.2

Insulation Installation Grades

703.1.2.1 Both Grade 1 and Grade 2 installations are in accordance 

with the following: (a) Grades apply to cavity fill insulation, continuous rigid insulation, 

and any other field-installed insulation products. Grading applies to 

(a) 15 percent

(b) 30 percent

(a) 45 percent, or meets the requirement of ICC IECC, Section 

402.1.4 703.1.2 The insulation installation is graded by a third party and is in 

accordance with Sections 703.1.2.1, 703.1.2.2, 703.1.2.3, and /or 

703.1.2.4, as applicable. (Points not awarded in this section if 

Addition Note: Section 703.1.1 applies to the new construction 

portion of additions. Renovation Note: The existing whole building thermal envelope UA 

is evaluated. One of the following is selected based on the (1) If the overall thermal performance meets or exceeds the 

requirements of ICC IECC; Section 402.1.4; Section 703.1.1 applies 

to the renovation. (2) If the existing overall thermal performance is below the 

requirements of ICC IECC, Section 402.1.4, the overall thermal 
298 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

703.2.1.4 CEILINGS and ATTICS

 0 Add'l Pts

1 Add'l Pt

(a) 15 percent 1 Add'l Pt

(b) 30 percent 2 Add'l Pts

(c) 50 percent 3 Add'l Pts

703.3 FENESTRATION

Points Per 

Tables 

703.3.1(a) 

or 

703.3.1(b)

U-Factor and SHGC Climate Zone

0.45 0.30 1 and 2 8

0.35 0.30 3 8

0.30 Any 4 and 5 5

0.30 Any 6 and 8 6

0.55 0.35 1 to 3

0.55 Any 4 to 8

U-Factor and SHGC Climate Zone

0.45 0.25 1 and 2 10

0.35 0 .25 3 10

0.25 Any 4 and 5 10

0.25 Any 6 thru 8 12

0.50 0.35 1 to 3

0.50 Any 4 to 8

 0 Add'l Pts

2 Add'l Pts

703.4 HVAC Equipment Efficiency

4

(1) Table 703.4.2(1) Gas and propane 

heaters:

Climate Zone AFUE Points

1 >90% 0

1 >92% 0

1 >94% 0

2 >90% 2

2 >92% 2

2 >94% 3

3 >90% 5

3 >92% 6

3 >94% 7

4 >90% 8

4 >92% 9

4 >94% 10

5 >90% 11

5 >92% 12

5 >94% 14

6 through 8 >90% 14

6 through 8 >92% 15

6 through 8 >94% 17

Table 703.4.2(2) Oil Furnace:

Climate Zone AFUE Points

1 >83% 0

1 >90% 0

2 >83% 1

2 >90% 2

3 >83% 3

3 >90% 5

4 >83% 3

4 >90% 8

5 >83% 7

5 >90% 11

6 through 8 >83% 7

6 through 8 >90% 14

Table 703.4.2(2) - Oil Furnace:

703.4.2 Furnace and/or boiler efficiency is in accordance with one of 

the following: 

Points per Table 703.4.2(1)

Table 703.4.2(1) - Gas / Propane Heaters

Points per Table 703.4.2(2)

included above

Addition Note: Section 703.3.1 applies only to the new construction 

portion of additions. (Points available on the basis of a ratio of new Renovation Note: Section 703.3.1 applies only to the replacement 

of existing windows. (Points available on the basis of a ratio of new 

703.4.1 Combination Space Heating and Water Heating System 

(“Combo” System) is installed using either a coil from the water heater 

included above

Table 703.3.1(b) - Enhanced Fenestration Specifications

Windows and Exterior Doors (maximum certified ratings)

Skylights and TDDs (maximum certified ratings)

703.3.1 The NFRC-certified U-factor and SHGC for windows, 

exterior doors, skylights, and tubular daylighting devices (TDDs) are in 

accordance with Table 703.3.1(a) or (b). Decorative fenestration 

elements with a maximum of 15 square feet or 10% of the to

Table 703.3.1(a) - Enhanced Fenestration Specifications

Windows and Exterior Doors (maximum certified ratings)

Skylights and TDDs (maximum certified ratings)

Addition Note: Section 703.2.1 applies only to the new construction 

portion of additions. Renovation Note: The air infiltration of the existing whole building 

envelope is evaluated. Based on the evaluation, choose one of the (1) Where the overall air infiltration rate is equal to or less than the 

requirements for new construction (as indicated in Section 704.6.2.1), (2) Where the overall air infiltration rate is greater than the 

requirements for new construction (as indicated in Section 704.6.2.1), 

(5) Fireplace walls: Air barrier that is alligned with insulation; any gaps 

are sealed with caulk or foam.

(1) At dropped ceilings and soffits, the air barrier is substantially 

aligned with insulation and any gaps are sealed with caulk, foam, or (2) Access to vented attics, including knee wall doors, and/or drop 

down stairs, is caulked, gasketed, or otherwise sealed. (3) An insulated cover is gasketed or sealed to the attic opening 

where a whole building or whole dwelling unit fan penetrates into the 
APPENDIX B 299

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(3) Gas Boiler: Points per Table 

703.4.2(3)

Climate Zone AFUE Points

1 >85% 0

1 >90% 0

1 >94% 0

2 >85% 1

2 >90% 2

2 >94% 3

3 >85% 3

3 >90% 5

3 >94% 7

4 >85% 4

4 >90% 8

4 >94% 10

5 >85% 6

5 >90% 11

5 >94% 14

6 through 8 >85% 7

6 through 8 >90% 14

6 through 8 >94% 17

Table 703.4.3.2(4) Oil Boiler: Points per Table 

703.4.2(4)

Climate Zone AFUE Points

1 >85% 0

1 >90% 0

2 >85% 1

2 >90% 2

3 >85% 3

3 >90% 5

4 >85% 4

4 >90% 8

5 >85% 6

5 >90% 11

6 through 8 >85% 7

6 through 8 >90% 14

1

Points per Table 

703.4.4

Climate Zone Efficiency Points

1 8.2HSPF 11.5EER 0

1 9.0HSPF 12.5EER 0

2 8.2HSPF 11.5EER 1

2 9.0HSPF 12.5EER 2

3 8.2HSPF 11.5EER 2

3 9.0HSPF 12.5EER 5

4 8.2HSPF 11.5EER 5

4 9.0HSPF 12.5EER 10

5 8.2HSPF 11.5EER 7*

5 9.0HSPF 12.5EER 11*

6 through 8 8.2HSPF 11.5EER 7*

6 through 8 9.0HSPF 12.5EER 12*

Points per Table 

703.4.5(1)

Climate Zone SEER (EER) Points

1 14 (11.5) 8

1 15 (12.5) 12

1 17 (12.5) 18

1 19 (12.5) 24

2 14 (11.5) 6

2 15 (12.5) 10

2 17 (12.5) 14

2 19 (12.5) 18

3 14 (11.5) 2

3 15 (12.5) 4

3 17 (12.5) 6

3 19 (12.5) 8

4 14 (11.5) 2

4 15 (12.5) 3

4 17 (12.5) 4

4 19 (12.5) 4

5 14 (11.5) 1

5 15 (12.5) 2

5 17 (12.5) 3

5 19 (12.5) 3

Table 703.4.5(1) - Air Conditioner and Heat Pump Cooling

703.4.4 Heat pump heating efficiency is in accordance with Table 

703.4.4. Refrigerant charge is verified to be in conformance with 

manufacturer’s instructions. Table 703.4.4 - Heat Pump Heating

*Zones 5-8 require consideration for use of resistance heat in cold 

climates when installing a heat pump. 703.4.5 Cooling efficiency is in accordance with one of the following. 

Refrigerant charge is verified for conformance with manufacturer’s 

instructions.

Table 703.4.2(3) - Gas Boiler

Table 703.4.2(4) - Oil Boiler

703.4.3 Boiler equipped with temperature reset control or burner 

delay control. 
300 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

6 through 8 14 (11.5) 1

6 through 8 15 (12.5) 2

6 through 8 17 (12.5) 3

6 through 8 19 (12.5) 3

Points per 

Table 

703.4.5(2)

Table 703.4.5(2) - Water Source and Cooled Air Conditioners

Climate Zone EER, COP Points

1 15 4.0 18

2 15 4.0 14

3 15 4.0 6

4 15 4.0 4

5 15 4.0 3

6 through 8 15 4.0 3

(1) Open loop; >16.2 EER and > 3.6 COP

20

20

20

30

1

2

1

4

1

 0 Add'l Pts

1 Add'l Pt

(1) Gas Water Heating

Size (gallons) Energy Factor POINTS

30 to < 40 0.64 1

40 to < 50 0.62 1

50 to < 65 0.6 1

65 to < 75 0.58 1

75 0.56 1

 Any 0.8 10

Size (gallons) Thermal Efficiency POINTS

Any 82-86% 1

 Any > 86% 10

(2) Electric Water Heating

Size (gallons) Energy Factor POINTS

30 to < 40 0.95 1

40 to < 50 0.94 1

50 to < 65 0.92 1

65 to < 80 0.9 1

80 to < 100 0.88 1

100 0.86 1

(3) Oil Water Heating

Size (gallons) Energy Factor POINTS

30 to < 50 0.59 1

50 0.55 1

 (4) Heat Pump Water Heating

Energy Factor POINTS

Heat Pump 1.5 7

Heat Pump 2 10

Points per 

Table 703.5.2

Points for 

Desuper heater

5

2

2

703.5.4 Insulating hot water pipes 

1

1

 0 Add'l Pts

1 Add'l Pt

1

704 Additional Practices

Addition Note: Section 703.5.4 applies only to the new or modified 

plumbing associated with the addition. Renovation Note: Where hot water lines in the existing building are 

accessible, the hot water lines are insulated in accordance with 703.5.5 Indirect fired water heater storage tanks heated from boiler 

systems are installed.

Zone 5-8

703.5.3 Drain-water heat recovery system is installed in multi-family 

units. (Points awarded per building.)

703.5.4.1 Hot water lines are insulated with a minimum of R-4 

insulation. 703.5.4.2 Boiler supply piping is insulated in unconditioned spaces.

703.5.2 Desuperheater, s installed by a qualified installer or is preinstalled in the factory.

Table 703.5.2 – Desuperheater

Climate Zone

Zone 1-4

Points per 

Table 703.5.1(3) Table 703.5.1(3) – Oil Water Heating

Points per 

Table 703.5.1(4) Table 703.5.1(4) – Heat Pump Water Heating

(Storage with input rate of 75,000 Btu/hr or less or instantaneous input 

rate of 200,000 Btu/hr or less)

Table 703.5.1(1)(b) - Gas Water Heating

(Storage with input rate of greater than 75,000 Btu/hr or 

instantaneous input rate greater than 200,000 Btu/hr)

Points Per 

Tables 

703.5.1(2) Table 703.5.1(2) – Electric Water Heating

Addition Note: Section 703.4.10 applies to the new construction 

portion of additions. Renovation Note: Replace existing nonprogrammable thermostat.

703.5 Water Heating Design, Equipment, and Installation

703.5.1 Water heater Energy Factor (EF) is equal to or greater than 

the following:

Points Per 

Tables 

703.5.1(1)(a) or 

703.5.1(1)(b) Table 703.5.1(1)(a) - Gas Water Heating

703.4.9 In multi-unit buildings, an advanced electric and fossil fuel 

submetering system is installed to monitor electricity and fossil fuel (1) Install a device providing monthly consumption information.

(2) Install a device that can provide near real-time energy 

consumption information. 703.4.10 An ENERGY STAR, or equivalent, programmable 

thermostat is installed to control each heating and cooling zone. 

(3) Direct expansion; >15.0 EER and > 3.5 COP

(4) Any type (open, closed or direct expansion); >24 EER and > 4.3 

COP 703.4.7 ENERGY STAR, or equivalent, ceiling fans are installed. 

(Points awarded per building.) 703.4.8 Whole building or whole dwelling unit fan(s) with insulated 

louvers and a sealed enclosure is installed. (Points awarded per 

(2) Water Source and Cooled Air Conditioners 

703.4.6 Ground source heat pump is installed by a Certified 

Geothermal Service Contractor in accordance with one of the 

(2) Closed loop; >14.1 EER and > 3.3 COP
APPENDIX B 301

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

704.2 Lighting and Appliances

4

4 0 CFLs.

8

4 125 $25 per fixture; 5 fixtures

2

2 0 No recessed.

(1) 25% of lighting 2

(2) 50% of lighting 4

2

(1) Refrigerator

5

A8.0 "Refrig by others" presumably owner.

(2) Dishwasher 2 2 0 A8.0

(3) Washing machine 4

704.2.6 Induction cooktop is installed. 1

1

5

Climate Zone and Overhang Depth

Vertical Distance 

between bottom of 

overhang and top of 

window sill

1 through 3 2' 8" <7' 4"

1 through 3 2' 8" <6' 4"

1 through 3 2' 4" <5' 4"

1 through 3 2' 0" <4' 4"

1 through 3 2' 0" <3' 4"

4 through 6 2' 4" <7' 4"

4 through 6 2' 4" <6' 4"

4 through 6 2' 0" <5' 4"

4 through 6 2' 0" <4' 4"

4 through 6 1' 8" <3' 4"

7 and 8 2' 0" <7' 4"

7 and 8 1' 8" <6' 4"

7 and 8 1' 8" <5' 4"

704.3.1.1 Sun-tempered Design: Building orientation, sizing of 

glazing, and design of overhangs are in accordance with all of the 

following:

704.1 Application of Additional Practice Points. Points from 

Section 704 can be added to points earned in Section 702 

(Performance Path), Section 703 (Prescriptive Path) or Section 

701.1.3 (alternative Bronze Level compliance).

(1) A minimum of 50% of the total hard-wired lighting fixtures, or the 

bulbs in those fixtures, qualify as ENERGY STAR or equivalent.

(2) A minimum of 50% of the total hard-wired lighting fixtures qualify 

as ENERGY STAR or equivalent.

(3) A minimum of 80% of the exterior lighting wattage has an 

efficiency of at least 40 lumens per watt or be a solar powered light 

fixture. 

704.2.2 The number of recessed light fixtures that penetrate the 

thermal envelope are less than 1 per 400 square feet of total 

conditioned floor area and are in accordance with Section 

701.4.3.4(2). 

704.2.3 Occupancy sensors are installed on indoor lights, and photo 

or motion sensors are installed on outdoor lights to control lighting. 

704.2.1 Hard-wired lighting meets one of the following: 

704.2.7 Occupancy sensors are installed for a minimum of 80% of 

hardwired lighting outlets.

704.3.1 Solar space heating and cooling.

704.3 Renewable Energy/Solar Heating and Cooling

704.2.4 Tubular daylighting device (TDD) or a skylight with sealed, 

insulated, low-E glass is installed in rooms without windows. (Points 

awarded per building.)

704.2.5 ENERGY STAR or equivalent appliance(s) are installed:

(1) The long side (or one side if of equal length) of the building faces 

within 20o of true south.

(2) Vertical glazing area is between 5% and 7% of gross Conditioned 

Floor Area on the south face (also see Section 704.3.1.1(8)).

(3) Vertical glazing area is less than 2% of gross Conditioned Floor 

Area on the west face, and glazing is ENERGY STAR compliant or 

equivalent.

(4) Vertical glazing area is less than 4% of gross Conditioned Floor 

Area on the east face and glazing is ENERGY STAR compliant or 

equivalent.

(5) Vertical glazing area is less than 8% of gross Conditioned Floor 

Area on the north face, and glazing is ENERGY STAR compliant or 

equivalent.

(6) Skylights, where installed, are in accordance with the following:

(a) Shades and insulated wells are used and all glazing is ENERGY 

STAR compliant or equivalent.

(b) Horizontal skylights are less than 0.5 % of Finished Ceiling Area

(c) Sloped skylights on slopes facing within 45o of true South, East or 

West are less than 1.5% of the Finished Ceiling area

(7) Overhangs or adjustable canopies or awnings or trellises provide 

shading on south facing glass for the appropriate climate zone in 

accordance with Table 704.3.1.1:

Table 704.3.1.1 Southern Window Overhang Depth
302 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

7 and 8 1' 4" <4' 4"

7 and 8 1' 0" <3' 4"

1

3

1

(c) Covered porches

4

704.3.2 Solar water heating

SEF - Electric Tank SEF - Gas Tank POINTS

1.30 - 1.50 0.85 - 1.00 8

(8) The south face windows have a SHGC of 0.40 or higher.

(9) Return air or transfer grilles/ducts are in accordance with Section 

704.4.5. 

704.3.1.3 Passive cooling design features are in accordance with 

three or more of the following:

(1) Exterior shading is provided on east and west windows using one 

or a combination of the following strategies:

(a) Vine covered trellises with the vegetation separated a minimum of 

1 foot from face of building.

704.3.1.2 Automated solar protection is installed to provide shading 

for windows.

Points for three items:

Points for one additional item:

(b) Moveable awnings or louvers

(d) Attached or detached conditioned/unconditioned enclosed space 

that provides full shade of east and west windows (e.g., detached 

garage, shed or building)

(2) Overhangs are installed to provide shading on south-facing 

glazing in accordance with Section 704.3.1.1(7). (Points not 

awarded if points are taken under 704.3.1.1.)

(3) Windows and/or venting skylights are located to facilitate cross 

ventilation.

(4) Solar reflective roof or radiant barrier is installed in Climate Zones 

1, 2 or 3 and roof material meets a 3 year aged criteria of 0.50.

(5) Internal exposed thermal mass is a minimum of three inches in 

thickness. Thermal mass consists of concrete, brick, and/or tile that 

are fully adhered to a masonry base or other masonry material and is 

in accordance with one or a combination of the fo

(a) A minimum of one square foot of exposed thermal mass of floor 

per three square feet of gross finished floor area. 

(b) A minimum of three square feet of exposed thermal mass in 

interior walls or elements per square foot of gross finished floor area.

(6) Roofing material is installed with a minimum 0.75 inch continuous 

air space offset from the roof deck from eave to ridge.

(2) Additional thermal mass for any room with south-facing glazing of 

more than 7% of the finished floor area is provided in accordance with 

the following:

704.3.1.4 Passive solar heating design. In addition to the suntempered design features in Section 704.3.1.1, all of the following are 

implemented: 

(1) Additional glazing, no greater than12%, is permitted on the south 

wall. This additional glazing is in accordance with the requirements in 

Section 704.3.1.1. 

704.3.2.1 Solar water heater. SRCC (Solar Rating & Certification 

Corporation) OG 300 rated, or equivalent, solar domestic water 

heating system is installed. Solar Energy Factor (SEF as defined by 

SRCC) is in accordance with Table 704.3.2.1.

Table 704.3.2.1 - Solar Hot Water Systems

(a) Thermal mass is solid and a minimum of 3” in thickness. Where 

two thermal mass materials are layered together (e.g. ceramic tile on 

concrete base) to achieve the appropriate thickness, they are fully 

adhered to (touching) each other. 

(b) Thermal mass directly exposed to sunlight must be provided in the 

following minimum ratios: 

(i) Above latitude 35o: 5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(ii) Latitude 30o to 35o: 5.5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(iii) Latitude 25o to 30o: 6 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(c) Thermal mass not directly exposed to sunlight is permitted to be 

used to achieve thermal mass requirements of Section 704.3.1.4 (2) 

based on a ratio of 40 square feet of thermal mass for every 1 square 

foot of south facing glazing. 

(3) In addition to return air or transfer grilles/ducts required by Section 

704.3.1.1, provisions for forced airflow to adjoining areas are 

implemented as needed. 
APPENDIX B 303

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1.51 - 1.80 1.01 - 1.20 11

1.81 - 2.30 1.21 - 1.50 14

2.31 - 3.00 1.51 - 2.00 17

 3.01 2.01 20

1

0.5

704.4 Ducts

5 5 0 2006 IECC M1601.1

15

15

12

12 0 A2.0

5

5 0 Plans indicate returns every room.

704.5 HVAC Design and Installation

1

1 0 The code does not require Manual S, 

however, Manual D, code required; references 

using S.

1

1 0 Standard.

3

3 0 Specify in scope.

Standard.

Standard.

Standard.

Standard.

149 Allow team of 2 2 hours at field rate.

Standard.

1

1 0 Trane and others include 15' of line set 

alternate refrigerant with product.

4

5

5 0 Included in TBC with EStar inspection.

(3) Insulation is installed in accordance with Section 703.1.2 

704.6 Installation and Performance Verification

(2) Building envelope air sealing is installed.

704.6.2 Third party testing is conducted to verify performance. 

704.6.2.1 Building envelope leakage rate is demonstrated by blower 

door test. In addition to the test, the following practices are required:

1. Whole building ventilation is provided in accordance with Section 

902.2.

(1) Ducts are installed per IRC/IMC and ducts are sealed.

(4) Windows, skylights, and doors are flashed, caulked, and sealed in 

accordance with manufacturer’s recommendations and in accordance 

with Section 703.2.1.

704.3.3 Additional renewable energy options

(1) Start-up procedure is performed according to manufacturer’s 

instructions.

704.4.2 Space heating is provided by a system that does not include 

air ducts.

704.4.4 Ductwork is in accordance with all of the following: 

(1) Building cavities are not used as return ductwork.

704.4.3 Space cooling is provided by a system that does not include 

air ducts.

704.5.2 HVAC contractor and service technician are certified by a 

nationally or regionally recognized program such as North American 

Technician Excellence, Inc. (NATE), Building Performance Institute 

(BPI), Radiant Panel Association, or manufacturers’ tr

704.5.3 Performance of the heating/cooling system is verified by the 

HVAC contractor in accordance with all of the following: 

(3) Ductwork is not installed in exterior walls 

704.4.5 Return ducts or transfer grilles are installed in every room 

with a door. This practice does not apply to bathrooms, kitchens, 

closets, pantries, and laundry rooms. 

704.5.1 ACCA Manual S or equivalent is used to select heating and/or 

cooling equipment.

704.3.3.1 Photovoltaic panels are installed on the property. (Points 

awarded per every 100 watts DC of the rated PV system) 

704.3.3.2 Other onsite renewable energy source is installed (e.g., 

wind energy, onsite micro-hydro power, active solar space heating 

systems). (Points awarded per every 1/10 kW of the system) 

704.4.1 Duct system is sized, designed, and installed according to 

ACCA Manual D or equivalent.

(2) Heating and cooling ducts and mechanical equipment are 

installed within the conditioned building space .

(3) Burner is set to fire at nameplate input.

704.6.1 Third party onsite inspection is conducted to verify 

conformance with all of the following, as applicable. Minimum of 2 

inspections are performed. One inspection after insulation is installed 

and prior to being covered, and another inspection upon completion of 

the project. Where multiple building or dwelling units of the same 

model are built by the same builder, a representative sample 

inspection of a minimum of 15% of the buildings or dwelling units is 

permitted. 

(5) Total air flow is within 10% of design flow.

704.5.5 Manufacturer’s label or printed specifications for sealed air 

handler (except furnaces) indicates the leakage is less than or equal 

to 2% of design airflow at a pressure of 1-inch w.g. (1250 Pa). Air 

handlers are tested with inlets, outlets, an

(4) Air handler setting/fan speed is set per manufacturer’s 

instructions.

704.5.4 HVAC equipment operates using an alternate refrigerant 

containing no HCFCs. (Points awarded only until January 20, 2010.)

(6) Total external system static does not exceed equipment capability 

at rated airflow. 

(2) Refrigerant charge is verified by super-heat and/or sub-cooling 

method.
304 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(a) 5 ACH50 0.25 nat 3

(b) 4 ACH50 0.2 6 6 0 (6) 0 Technically qualified for 6 points at silver

(c) 3 ACH50 0.15 9 9 0 $ included in performance rating

(d) 2 ACH50 0.1 12

(e) 1 ACH50 0.05 15

15

See 704.6.1(1) for cost of duct seal. BD and 

DB tests here not subtracted.

5

5 0 Move ducts and A/H inside building envelope. 

Cost is SF price to consumer given up to 

equipment - 

15

8

8 298 4 hours 2 technicians.

incl

incl

7 Points Max

2

2 0 Check w/ Dominion Power or similar for free 

device 

http://dom.mediaroom.com/index.php?s=43&it

em=784

(2) Energy monitoring device 4

(3) Energy management control system 7

2

5

Base Pts. 8 0 6 0 24 525 15 0 8 382 Ch. 8 Subtotal 

Cost/Point 0 0 21.875 48

2 20

Water heater location in attic.

3

Runs can be minimized further by locating the 

water at midpoint of bath and kitchen.

6

6

8

2 2 0

(1) All hot water piping which runs to the plumbing fixtures in both the 

kitchen and bathrooms is 40-feet or less in length from the water 

heater and is sized in accordance with the code for the specified 

application.

3. Fireplaces and Fuel Burning Appliances are in accordance with 

901.2.

801.1. Indoor hot water usage is reduced by one of the following 

practices: 

705 Innovative Practices

801 Indoor and Outdoor Water Use

(1) Programmable communicating thermostat

705.2 Renewable energy service plan is as follows:

CHAPTER 8: WATER EFFICIENCY

(3) 6% for ductwork both inside and outside the building thermal 

envelope.

(1) Builder selects a renewable energy service plan provided by the 

local electrical utility for interim (temporary) electric service. The 

builder’s local administrative office has renewable energy service.

The maximum leakage rate is in accordance with:

705.1 Energy consumption control. A whole building or whole 

dwelling unit device is installed that controls or monitors energy 

consumption. 

(2) The buyer of the home selects a renewable energy service plan 

provided by the utility prior to occupancy of the home.

1

(a) Tankless water heater is installed at point of use and is served 

only by cold water or a solar-assisted system.

(4) Pipe runs exceeding 40-feet from the water heater to fixture 

locations are aided by one of the following: 

(a) Use of structured-type plumbing with demand controlled hot water 

loops, in which the volume of water contained in the pipe and fixture 

fittings downstream of the recirculating trunk line is a maximum of 4 

cups (0.25 gallons).

(b) Implement an engineered parallel piping system (i.e. manifold 

system) in which the hot water line distance from the water heater to 

the parallel piping system is less than 15 feet and the parallel piping to 

the fixture fittings contains a maximum of 8

(c) Central core plumbing system with all plumbing fixture fittings (e.g., 

faucets & showerheads) located such that the volume of water 

contained in each pipe run between the water heater and fixture fitting 

is a maximum of 6 cups (0.38 gallons).

(2) All hot water piping which runs to the plumbing fixtures in both the 

kitchen and bathrooms is 30-feet or less from the water heater and is 

sized in accordance with the code for the specified application.

801.0 Intent. Measures that reduce indoor and outdoor water usage 

are implemented.

(b) Total airflow is within 10% of design flow.

2. Fossil fuel furnace and water heater is sealed combustion or power 

vented in accordance with Section 901.1.

704.6.2.3 Balanced HVAC air flows are demonstrated by flow hood 

or other acceptable flow measurement tool. Test results in 

accordance with both of the following:

704.6.2.2 The entire central HVAC duct system, including air 

handlers and register boots, is tested for leakage at a pressure 

differential of 0.1 inches w.g. (25 Pa). The maximum leakage as a 

percent of the system design flow rate is in accordance with 

(1) 6% for ductwork entirely outside the building's thermal envelope.

(2) 6% for ductwork entirely inside the building's thermal envelope.

(a) Measured flow at each supply and return register is within 25% of 

design flow.

(1) Dishwasher

(3) One of the following piping system designs is implemented:

(b) On demand hot water recirculation system is installed.

801.2 Energy Star® or equivalent water-conserving appliances are 

installed 
APPENDIX B 305

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

8

12

1 1 0

1 Point 

(3 Points Max)

2 0

Showerhead flow rate max. EPA is 2.5.

1 Add'l Pt 1 0 -1 0

2 Add'l Pts

2 0 Specify lower flow rate faucet/aerator.

1 

3 Pts Max 3 0

2 Add'l Pts

2 0

Mandatory

6 

18 Pts Max 18 525

Install low flow toilet.

4 

Max 4 Points

6 

Add'l Points 6 0

10 Pts. Max

2

4

4

4

4

6

3

2

4

4

15 15 0

6 6 382 

2

2 0 Distritution by gravity.

1

4 Points 

(per fixture)

10

24 Points Max

801.4 (3&4) All shower compartments in the home comply with 801.4 

(1&2).

4) All water closets and all urinals are in accordance with Section 

801.6(2) or Section 801.6(3), as applicable. 

(3) A urinal is installed with a flush volume of 0.5 gallons or less 

when tested in accordance with ASME A112.19.2.

(1) Gold and Emerald Levels: All water closets and urinals are in 

accordance with either Section 801.6 or 802.2.

801.7.4 The irrigation system(s) is controlled by a smart controller: 

(4) Drip emitters

801.7 Irrigation systems 

801.7.1 A low-volume, irrigation system is installed for each 

landscape type utilized: (Points awarded for each type of 

irrigation system installed.)

(2) A water closet is installed with an effective flush volume of 1.28 

gallons or less when tested in accordance with ASME A112.19.2 (all 

water closets) and ASME A112.19.14 (all dual flush water closets), 

and is in accordance with EPA WaterSense Tank-Typ

(1) Evapotranspiration (ET) based irrigation controller with a rain 

sensor 

(1) High distribution uniformity (DU) rotating spray heads

(3) Bubblers

(2) Drip irrigation

801.7.3 Irrigation system is zoned separately for turf and bedding 

areas.

(5) Soaker hose

(6) Subsurface irrigation

1) designed by a professional in accordance with EPA WaterSense 

requirements or equivalent

801.7.2 Irrigation system is in accordance with both of the following: 

2) installed in accordance with EPA WaterSense program or 

equivalent 

(2) Soil moisture sensor based irrigation controller

(1) Each water closet flushed by reclaimed or recycled water.

(2) Irrigation from reclaimed or recycled water onsite

802.2 Composting or waterless toilets and/or urinals. Composting 

or waterless toilets and/or urinals are in accordance with the following: 

(For water closets, points awarded for either Section 802.2 or 

801.6, but not both) 

(3) No irrigation is installed and a landscape plan is developed in 

accordance with Section 503.5(1) as applicable. (Points must be 

taken in 503.5(1) in order to receive points for 801.7.4(3)

801.8 Rainwater collection and distribution is provided.

(1) Rainwater is collected and used 

(2) Rainwater is distributed using a renewable energy source or 

gravity.

801.9 Water Filters. Water filter is installed to improve water quality 

for the whole building or whole dwelling unit.

802.1 Gray water (as specified in ICC IRC, Appendix O) is separated 

and reused, as permitted by local building code. (Points awarded for 

either Section 802.1(1) or 802.1(2), not both)

801.4 Showerheads

(3) Washing machine with a water factor of 6.0 or less

(2) Washing machine

(1) a bathroom (Points awarded for each bathroom.)

(3) All shower compartments installed meet the above conditions and 

are 2.0 to less than 2.5 gpm. 

(4) All shower compartments installed meet the above conditions and 

are 1.6 to less than 2.0 gpm. 

801.5 Faucets

(2) all lavatory faucets in the home meet the conditions of 801.5.1

801.3 A minimum of one food waste disposer is installed at the 

primary kitchen sink. 

801.4 (1&2) 1) The total showerhead flow rate at any point in time, 

for all showerheads in each shower compartment is less than 2.5 

gpm, tested at 80 psi per ASME A112.18.1/CSA B125.1. 2) In 

addition the showerheads must be equipped with an automatic com

801.5.1 Water-efficient lavatory faucets with 1.5 gpm or less 

maximum flow rate when tested at 60 psi in accordance with ASME 

A112.18.1 are installed.
306 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

8

8 Add'l Points

2

Base Pts. 103 0 8 0 20 44 8 0 26 1,796 Ch. 9 Subtotal 

Cost/Point 0 0 2 0 69 

5

Furnace and water heater are electric.

5

5 0 

Electric appliances.

5

3

5

2

5 50

Costs to move into conditioned space in 

704.6.2.2.(2). Cost of higher eff. in 702.

7

4

6

6

6

6

7 7 0 

Mandatory 

2 Points 0 0 

Mandatory 

2 Points 0 0 

3) All toilets and urinals are in accordance with Section 802.2 (2). 

2) Composting or waterless toilet and/or urinal is installed. (Points 

awarded per fixture)

(1) Excess Water Flow Shutoff

(2) Leak Detection System

802.3 Automatic shutoff water devices. One of the following 

automatic shutoff water supply devices is installed. Where a fire 

sprinkler system is present, installer is to ensure the device will not 

interfere with the operation of the fire sprinkler system

1) Gold and emerald levels: All water closets and urinals are in 

accordance with either Section 802.2 or Section 801.6. 

CHAPTER 9: INDOOR ENVIRONMENTAL QUALITY

901 Pollutant Source Control

901.0 Intent. Pollutant sources are controlled. 

901.1 Space and water heating options

901.1.3 The following combustion space heating and water heating 

equipment is installed within conditioned space. 

(1) Direct vent furnace or boiler

(2) (a) Power vent water heater

901.1.1 Natural draft space heating or water heating equipment is not 

located in conditioned spaces, including conditioned crawl spaces. 

Natural draft equipment is permitted to be installed within the 

conditioned spaces if located in a mechanical room that has an 

outdoor air source, and is otherwise sealed and insulated to separate 

it from the conditioned space(s).

901.1.2 Air handling equipment or return ducts are not located in the 

garage, unless placed in isolated, air-sealed mechanical rooms with 

an outside air source. 

 (b) Direct vent water heater

901.2.1(2)(b) Factory-built wood burning fireplaces are in accordance 

with the certification requirements of UL 127 and are EPA certified.

901.1.4 The following electric equipment is installed:

1) Heat pump air handler in unconditioned space

2) Heat pump air handler in conditioned space 

901.2.1(1) Natural gas and propane fireplaces that are power vented 

or direct vented, are equipped with permanently fixed glass fronts or 

gasketed doors, and comply with ANSI Z21.88/CSA 2.33a or ANSI 

Z21.50/CSA 2.22 

901.2 Fireplaces and Fuel Burning Appliances (except cooking 

appliances, clothes dryers, water heaters, and furnaces) located in 

conditioned space are code compliant, vented to the outdoors, and 

have adequate combustion and ventilation air provided to minimize 

spillage or back-drafting, in accordance with the following: All of the 

following items are mandatory, if applicable, for certification.

901.2.1(2)(a) Wood burning fireplaces are equipped with gasketed 

doors designed to operate with the doors closed, outside combustion 

air, and a means is provided for sealing the flue to minimize interior air 

(heat) loss when not in operation.

901.3 Garages are in accordance with the following:

901.3(1)(a) Where installed in the common wall between the attached 

garage and conditioned space, the door is tightly sealed and 

gasketed. 

901.2.1(2)(c) Wood stove and fireplace inserts, as defined in UL 

1482, Section 3.8 are in accordance with the certification 

requirements of UL 1482 and are in accordance with the emission 

requirements of the EPA Certification and the State of Washington W

901.2.1(2)(d) Pellet (biomass) stoves and furnaces are in accordance 

with the requirements of ASTM E1509 or are EPA Certified. 

901.2.1(2)(e) Masonry heaters are in accordance with the definitions 

in ASTM E1602 and ICC IBC, Section 2112.1. 

901.2.2 Fireplaces, woodstoves, pellet stoves, or masonry heaters 

are not installed. 

901.3(1)(b) A continuous air barrier is provided between walls and 

ceilings separating the garage space from the conditioned living 

spaces. 
APPENDIX B 307

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

10 10 0 

10 points 

max.

Mandatory

0 0 

2 Points per 

Product Group 2 0

Specify for kitchen cabinets and all interior 

products.

2 Points per 

Product Group 2 0

Specify for kitchen cabinets and all interior 

products.

3 Points per 

Product Group

4 Points per 

Product Group

4 0 Specify for interior doors and trim.

4 Points per 

Product Group

2 Add'l Pts

Mandatory 0 0 

No carpeting is installed. Laminated wood 

product.

No padding installed.

6 6 0 

2 2 0 Specify.

2 2 0 Specify.

6

4

5

Can't take points here.

901.3(1)(c) For one and two-family dwelling unit attached garages, a 

100 cfm or greater ducted, or 70 cfm or greater unducted wall 

exhaust fan is installed and vented to the outdoors, designed and 

installed for continuous operation, or has controls (e.g., motion 

detectors, pressure switches) that activate operation for a minimum 

of 1 hour when either human passage door or roll-up automatic doors 

are operated. For ducted exhaust fans, the fan airflow rating and duct 

sizing are in accordance with Appendix A. (If you claim points for 

901.3(1)(c), you cannot claim points for 901.3(2). 

901.3(2) A carport is installed, the garage is detached from the 

building, or no garage is installed. (If you claim points for 901.3(2), 

you cannot claim points for 901.3(1)(a), 901.3(1)(b), or 901.3(1)(c).

901.5(2) A minimum of 85% of installed carpet area, carpet cushion 

(padding), and carpet adhesives are in accordance with the emission 

levels of CDPH 01350, as certified by a third-party program, such as 

the Carpet and Rug Institute’s (CRI) Green Label Pl

901.4(1) Structural plywood used for floor, wall, and/or roof sheathing 

is compliant with DOC PS 1 and/or DOC PS 2. OSB used for floor, 

wall, and/or roof sheathing is compliant with DOC PS 2. The panels 

are made with moisture-resistant adhesives. The trademark indicates 

these adhesives as follows: Exposure 1 or Exterior for plywood, and 

Exposure 1 for OSB. 

901.4(2-6) Wood Materials. A minimum of 85% of material within a 

product group (i.e. wood structural panels, countertops, composite 

trim/doors, custom woodwork, and/or component closet shelving) is 

manufactured in accordance with the following: 

(2) Particleboard and MDF (medium density fiberboard) is 

manufactured and labeled in accordance with CPA A208.1 and CPA 

A208.2, respectively.

(3) Hardwood plywood is in accordance with HPVA HP-1 and HUD 

Title 24, Part 3280.

Renovation Note: Additional points for Section 901.4 apply to 

renovations that replace all existing countertops, shelving, and other 

nonstructural products.

(5) Composite wood or agrifiber panel products contain no added 

urea-formaldehyde or are in accordance with the CARB Composite 

Wood Air Toxic Contaminant Measure Standard.

(a) Carpet

(b) Carpet cushion

901.5 Carpets are in accordance with the following:

901.5(1) Wall-to-wall carpeting is not installed adjacent to water 

closets and bathing fixtures .

901.7 Wall coverings. A minimum of 85% of wall coverings are in 

accordance with the emission concentration limits of CDPH 01350 

(using the office scenario), as certified by a third-party program, such 

as the Scientific Certification Systems (SCS) Indoor Advantage Gold 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program. 

901.8 Architectural coatings. A minimum of 85% of the architectural 

coatings are in accordance with one of the following conditions:

(c) Carpet adhesives

901.6 Hard-surface flooring. A minimum of 85% of installed hardsurface flooring is in accordance with the emission concentration limits 

of CDPH 01350 (using the office scenario), as certified by a thirdparty program, such as the RFCI's FloorScore Indoor Air Certification 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program. 

(2) CARB Suggested Control Measure for Architectural Coatings 

(3) GS-11

901.8.1 Site-applied interior products are in accordance with one or 

more of the following; not both.

(1) Zero VOC, determined by EPA Method 24 (VOC content below 

the detection limit for the method). 

(b) 100 grams/liter non flat

(c) 350 grams/liter clear wood varnish

(4) VOC limits in accordance with:

(a) 50 grams/liter flat 

(d) 550 grams/liter clear wood lacquer 

(4) Particleboard, MDF, or hardwood plywood is in accordance with 

CPA 2.

(6) Non-emitting products. 
308 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

8

8 0 

5

5 0 

5

5 0

5

2

2 0

3

Require better specs on cabinets.

5

4

4 0 Insulation can be respec'd to meet this 

criteria.

1

1 0 Specify.

3

1

1 44

1

1

901.9.1 For exterior low-VOC adhesives and sealants, a minimum of 

85% of site-applied products used for the installation of subfloors and 

on the exterior of the project are in accordance with one of the 

folllowing: 

(1) The California Air Resources Board consumer products regulation 

as follows: 

901.8.2 Site-applied interior products are in accordance with the 

emissions levels of CDPH 01350, as certified by a third party program 

such as the Scientific Certification Systems (SCS) Indoor Advantage 

Gold Program or the Greenguard Environmental Institute's Children 

and Schools Certification Program.

901.9 Adhesives and Sealants. 

c) The VOC content of all other caulks and sealants not to exceed 2% 

by weight or 30 grams/liter, whichever is greater.

(d) The VOC content of contact adhesives not to exceed 55% by 

weight or 480 grams/liter, whichever is greater.

(2) GS-36

a) Construction Adhesives: VOC content not to exceed 7% by weight 

or 75 grams/liter, whichever is greater. 

b) The VOC content of reactive sealants (i.e., silicones, 

polyurethanes, and hybrids, such as MS Polymer and silylated 

polyurethane resin or SPUR) not to exceed 4% by weight or 50 

grams/liter, whichever is greater.

(2) GS-36

901.10 Cabinets. A minimum of 85% of kitchen and bath vanity 

cabinets are in accordance with one of the following: (Where more 

than one of the following practices is used, the practice with the 

fewer number of points is awarded)

(1) Kitchen and bath vanity cabinets in accordance with KCMA ESP 

01, or equivalent, are installed.

901.9.2 Interior Low-VOC Adhesives and Sealants. For interior low 

VOC adhesives and sealants, a minimum of 85% of site-applied 

products used within the interior of the building are in accordance with 

one of the following, as applicable:

1) CDPH 01350, as certified by a third party program, such as 

Scientific Certification Systems (SCS) Indoor Advantage Gold 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program.

901.11 Insulation is in accordance with the following: 

(1) Formaldehyde emissions of wall, ceiling, and floor insulation 

materials are in accordance with the emissions levels of CDPH 

01350, as certified by a third-party program, such as the 

GREENGUARD Environmental Institute's Children and Schools 

Certification Program or theScientific Certifications Systems (SCS) 

Indoor Advantage Gold Program.

(2) Formaldehyde emissions of duct insulation materials are in 

accordance with the emissions levels of CDPH 01350, as certified by 

a third-party program, such as the GREENGUARD Environmental 

Institute's Children and Schools Certification Program or the Scientific 

Certifications Systems (SCS) Indoor Advantage Gold Program.

(2) Kitchen and bath vanity cabinets in accordance with CARB 

Composite Wood Air Toxic Contaminant Measure Standard are 

installed. 

(3) Kitchen and bath vanity cabinets are installed that contain no 

added urea formaldehyde or are in accordance with 

GGPS.EC.010.R0, ASTM D6670, or equivalent. 

901.12 A carbon monoxide (CO) alarm is installed in a central location 

outside of each separate sleeping area in the immediate vicinity of the 

bedrooms. The CO alarm(s) is located in accordance with NFPA 720 

and is hard-wired with a battery back-up. The alarm device(s) is 

certified by a third party for conformance with either CSA 6.19 or UL 

2034.

901.13 Building entrance pollutants control. Pollutants are controlled 

at all main building entrances by one of the following methods: 

(1) Exterior grilles or mats are installed in a fixed manner and may be 

removable for cleaning. 

(2) Interior grilles or mats are installed in a fixed manner and may be 

removable for cleaning. 

901.14 Non-smoking areas. All interior common areas of a multi-unit 

building are designated as non-smoking areas with posted signage.
APPENDIX B 309

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

0 0 Complies.

Mandatory 0 0 Complies.

8

8 0 See also 904.2

9 Points Max

5 5 0 

2 4 0 n/a

8

8 149 2 field personnel 2 hours, however supply side 

ventilation is already provided.

Max. 6 

Points

2

6 0 

3

8

8 0 

10

15

17

8

3

3 0 

Mandatory

0 0

10

15

10

3

3

3 0 Have central vac installer test drive with duct 

cleaning.

5

5 1500

902 Pollutant Control

902.0 Intent. Pollutants generated in the building are controlled. 

902.1.1 Spot ventilation is in accordance with the following:

(2) ENERGY STAR, or equivalent, fans operating at or below 1 sone 

(Points awarded per fan)

902.2. Building ventilation systems. 

902.2.1 One of the following whole building ventilation systems is 

implemented and is in accordance with the specifications of Appendix 

B. (Points must be claimed in 902.2.1 to claim points in 902.2.2.

(1) Bathrooms (including powder rooms) are vented to the outdoors. 

The minimum ventilation rate is 50 cfm for intermittent operation or 20 

cfm for continuous operation in bathrooms. 

(2) Clothes dryers are vented to the outdoors. 

(3) Kitchen exhaust units and/or range hoods are ducted to the 

outdoors and have a minimum ventilation rate of 100 cfm for 

intermittent operation or 25 cfm for continuous operation. 

1) for first device

902.1.2 Bathroom and/or laundry exhaust fan is provided with an 

automatic timer and/or humidistat: 

2) for each additional device

902.1.4 Exhaust fans are ENERGY STAR as applicable. 

902.1.3 Kitchen range, bathroom, and laundry exhaust are verified to 

specification. Ventilation airflow at the point of exhaust is tested to a 

minimum of 100 cfm intermittent or 25 cfm continuous for kitchens, 

and 50 cfm intermittent or 20 cfm continuous 

(1) ENERGY STAR, or equivalent, fans (Points awarded per fan) 

(a) A passive radon system is installed. 

902.3 Radon control. Radon control measures are in accordance 

with ICC IRC Appendix F. (Zones are defined in Figure 9(1). 

902.3(1) Buildings located in Radon Zone 1 have a radon system 

installed.

(b) An active radon system is installed.

902.3(2) Buildings located in Zone 2. 

(a) A passive radon system is installed. 

(3) Heat-recovery ventilator.

(4) Energy-recovery ventilator.

902.2.2 Ventilation airflow is tested to achieve the design fan airflow 

at point of exhaust in accordance with Appendix B. (Points must be 

claimed in 902.2.1 to claim points in 902.2.2) 

902.2.3 MERV filters 8 or greater are installed on central air systems. 

Designer or installer is to verify that the HVAC equipment is able to 

accommodate the greater pressure drop of MERV 8 filters. 

(1) Exhaust or supply fan(s) ready for continuous operation and with 

appropriately labeled controls.

(2) Balanced exhaust and supply fans with supply intakes located in 

accordance with the manufacturer's guidelines to not introduce 

polluted air back into the building. 

902.4 HVAC system protection. One of the following HVAC system 

protection measures is performed: 

(1) HVAC supply registers (boots), return grilles, and rough-ins are 

covered during construction activities to prevent dust and other 

pollutants from entering the system. 

(2) Prior to owner occupancy, HVAC supply registers (boots), return 

grilles, and duct terminations are inspected and vacuumed. In 

addition, the coils are inspected and cleaned and the filter is replaced 

if necessary. 

902.5 Central vacuum systems. Central vacuum system is installed 

and vented to the outside.
310 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

2 0 

2 2 0 

2 2 0 

2 2 0 

Mandatory

0 0 

Mandatory 0 0 does not apply

3

3 75

6

6 0 Alter specs to accommodate.

Mandatory

0 0

10

8

8 0 

2 Points 

2 0 Put into specs.

Mandatory 

2 Points

2 0 Include site superintendent's provision to test 

and record moisture in wall cavity prior to 

hanging drywall.

4

4 0 Include in site superintendent's responsibilities

2

2 0 Include in the installers scope.

2

2 0 Plumbing lines are in unconditioned attic, but 

not exterior walls. Insulate attic lines.

2

See 903.5.1. 

5 5 0

Mandatory

0 0

a. In areas with free-draining soils, identified as Group 1 in the ICC 

IRC by a certified hydrologist, soil scientist, or engineer through a site 

visit, a gravel bed or geotextile matting is not required.

903.5.3 Plumbing is not installed in unconditioned spaces.

Modification for 1&2:

903.0 Intent. Moisture and moisture effects are controlled. 

903.1 Tile backing materials installed under tiled surfaces in wet areas 

are in accordance with ASTM C1178, C1278, C1288, or C1325. 

2) A minimum 4-inch thick uniform layer of sand, overlain with a layer 

or strips of geotextile drainage matting, covered with polyethylene 

sheeting, with the sheeting joints lapped according to Section 903.3.

(a) Attic/ceiling

903.2 Capillary breaks

903.6(1) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated to a 

minimum of R-6. Outdoor air supplies to ventilation systems are 

insulated to a minimum of R-6.

903.2.1 A capillary break and vapor retarder are installed at all 

concrete slabs in accordance to the following:

1) A minimum 4-inch thick bed of 1⁄2 inch diameter or greater clean 

aggregate, covered with polyethylene or polystyrene sheeting in direct 

contact with the concrete slab, with the sheeting joints lapped in 

accordance with Section 903.3. (or)

b. In Dry climate locations, as defined by Figure 6(1), polyethylene 

sheeting is not required unless required for radon resistance (Section 

902.3).

903.2.2 Add a capillary break on footing to prevent moisture migration 

into foundation wall. 

903.3.1(1) Minimum 6-mil vapor retarder installed on the crawl space 

floor and extended up the wall sufficient to allow the material to be 

affixed with glue and furring strips. Joints of vapor retarder overlap a 

minimum of 6 inches and are taped.

903.3 Crawlspaces

903.5 Plumbing. 

903.5.1 Plumbing distribution lines are not installed in exterior wall 

cavities.

903 Moisture Management: Vapor, Rainwater, Plumbing, HVAC

902.6 Living space contaminants. The living space is sealed to 

prevent unwanted contaminants.

(1) Attic access, knee wall door, or drop down stair is caulked, 

gasketed, or otherwise sealed. 

(2) All penetrations (e.g., top plates, HVAC register boots, recessed 

can lights, are sealed in the following areas:

(b) Wall

(c) Floors

903.5.2 Cold water pipes in unconditioned spaces are insulated to a 

minimum of R-4 with pipe insulation or other covering that adequately 

prevents condensation.

903.4.1(1) Building materials with visible mold are not installed or are 

cleaned or encapsulated prior to concealment and closing.

903.3.2 Crawlspace that is built as a conditioned area is sealed to 

prevent outside air infiltration and provided with conditioned air at a 

rate not less than 0.02 cfm per square foot of horizontal area and one 

of the following is implemented:

(1) A concrete slab over lapped 6 mil polyethylene or polystyrene

903.4.1(2) Walls are not enclosed (e.g. with drywall) if the insulation 

has a high moisture content. Wet insulation products are dry before 

enclosing. 

903.4.1(3) The moisture content of lumber is sampled to ensure it 

does not exceed 19 % prior to the surface and/or wall cavity 

enclosure. 

903.3.1(2) Damp-proof walls are provided below finished grade. 

Joints of vapor retarder overlap a minimum of 6 inches and are taped.

903.4.2 Moisture content of subfloor, substrate, or concrete slabs is 

in accordance with the appropriate industry standard for the finish 

flooring to be applied. 

(2) 6-mil polyethylene sheeting, lapped a minimum of 6 inches and 

taped at the seams. 

903.4 Moisture control measures. 
APPENDIX B 311

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

8 Points 

Richmond VA is not warm/humid climate

2

2 72 Bath fans are already triggered by 

humidistats.

2

Base Pts.

0 0 9 950 6 94 0 0 0 0 Ch. 10 Subtotal 

1 point per 2 

items

0 100 Estimated 40 hours staff. O/H removed for 

separate reporting as one time cost. This 

reflects staff time to assemble.

Mandatory

0.5 850 $200 certification fee and 5 hours of 

professional time.

Mandatory

0.5 Included with 1001.1

Mandatory

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

903.6(2) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated to a 

minimum of R-8. Outdoor air supplies to ventilation systems are 

insulated to a minimum of R-8.

1001.1 A homeowner’s binder is provided that includes the following, 

as available and applicable:

1001.0 Intent. Information on the building’s use, maintenance and 

green components is provided. 

903.7 Relative Humidity. In climate zones 1A, 2A, 3A, 4A, and 5A as 

defined by Figure 6(1), equipment is installed to maintain relative 

humidity (RH) at or below 60% using one of the following: 

903.9.1 In “Warm-Humid” climates as defined by Figure 6(1) 

equipment is installed to maintain Relative Humidity (RH) at or below 

60% using one of the following:

(6) Explanation of the benefits of using energy efficient lighting 

systems (e.g., compact fluorescent light bulbs, light emitting diode 

(LED)) in high usage areas.

(7) A list of practices to conserve water and energy.

(1) Additional dehumidification system(s)

(1) A green building program certificate or completion document.

(8) Local public transportation options (if applicable).

(9) A diagram showing the location of safety valves and controls for 

major building systems.

(2) List of green building features (can include the national green 

building checklist).

(3) Product manufacturer’s manuals or product data sheet for 

installed major equipment, fixtures and appliances. If product data 

sheet is in the binder, manufacturer’s manual shall may be attached to 

appliance in lieu of inclusion in the binder. 

(4) Information on local recycling programs.

(5) Information about available local utility programs that purchase a 

portion of energy from renewable energy providers. 

(12) A photo record of framing with utilities installed. Photos taken 

prior to installing insulation, clearly labeled, and included as part of the 

homeowner’s binder.

(10) Where frost protected shallow foundations are used, notify owner 

of precautions, including instructions not to remove or damage 

insulation when modifying landscaping, to provide heat to the home as 

required by the IRC/IBC, and to keep base materials 

(11) A list of local service providers that offer regularly scheduled 

service and maintenance contracts to assure proper performance of 

equipment and the structure (e.g., HVAC, water heating equipment, 

sealants, caulks, gutter and downspout system, showe

(2) Central HVAC system equipped with additional controls to operate 

in dehumidification mode.

904 Innovative Practices

904.1 A humidity monitoring system is installed with a mobile base 

unit that displays a reading of temperature and relative humidity at the 

base unit with a minimum of two remote units. One remote unit that is 

placed permanently inside the conditioned space in a central location, 

excluding attachment to exterior walls, and another remote unit is 

placed permanently outside of the conditioned space.

904.2 Kitchen exhaust unit(s) that equal or exceeds 400 cfm, and 

make-up air is provided.

(13) Maintenance checklist.

(14) List of common hazardous materials often used around the 

building and instructions for proper handling and disposal of these 

materials.

(15) Information about organic pest control, fertilizers, de-icers, and 

cleaning products.

(16) Information about native landscape materials and/or those that 

have low-water requirements.

(17) Information about methods of maintaining the building’s relative 

humidity in the range of 30-60%.

(18) Instructions for inspecting the building for termite infestation.

(19) Instructions for maintaining gutters and downspouts and 

importance of diverting water at least five feet away from foundation.

CHAPTER 10: OPERATION, MAINT., AND BUILDING OWNER 

EDUCATION

Building Owners’ Manual for One- and Two-Family Dwellings

(Points awarded for mandatory and non-mandatory items)
312 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

343 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

0.5

Mandatory

on Building Operation And Maintenance for 

6

6 94 Walk thru orientation should take about 2 

hours and be standard.

(1) HVAC filters.

(2) Thermostat operation and programming.

(3) Lighting controls.

(4) Appliances and settings.

(5) Water heater settings.

(6) Fan controls.

(2) a minimum of six of the non-mandatory items listed in Section 

1001.1

(20) A narrative detailing the importance of maintenance and 

operation in retaining the attributes of a green-built building.

Renovations Note: A building owners’ manual that includes the 

following:

(1) all mandatory items listed in Section 1001.1

1002.1 Training of building owners. Building owners/occupants are

familiarized with the green building goals and strategies implemented

and the impacts of the occupants’ practices on the costs of operating

the building. Training is provided to the responsible party(ies)

regarding all equipment operation and control systems. Systems

include, but are not limited to, the following:

(3) the EPA publications “Reducing Lead Hazards When Remodeling 

Your Home” and “Asbestos in Your Home: A Homeowner’s Guide”

1004.1 (Reserved)

1004

INNOVATIVE PRACTICES
APPENDIX B 313

APPENDIX B 

GREEN SCORING & COST

B. Seattle, Washington
314 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Building Comparison Rated 2/15/2010

2 story stack multi, Seattle WA

ANSI-ICC-700-2008 National Green Building StandardTM

Lot 69.3x53.7 3,721 Silver Gold Emerald

House 26 x 38' 946 sf Required Actual Required Actual Required Actual Required Actual KEY

2-story stack multi family 5. Lot Design... 39 109 66 109 93 109 119 146 Points are Co-Dependant on at

Density per acre at this lot size 23.5 6. Resource Efficiency 45 99 79 99 113 127 146 147 least one other cell

7. Energy Efficiency 30 49 60 101 100 154 120 180 Overhead Cost - Dependant on

8. Water Efficiency 14 16 26 37 41 44 60 62 subdivision size

chapter 5 totals are for whole lot, 9. Indoor Env. Quality 36 104 65 119 100 123 140 146

can be divided by 2 units 10. Operation, Maintenance... 8 12 10 12 11 12 12 17

Additional Points 50 100 100 100

Total 222 389 406 477 558 569 697 698

0 Points Cost Points Cost Points Cost Points Cost

Chapter 5 109 0 109 0 109 0 146 3,616

Chapter 6 99 0 99 0 127 0 147 4,686

Chapter 7 49 966 101 4,954 154 11,579 180 14,831

Chapter 8 16 0 37 150 44 150 62 582

Chapter 9 104 0 119 0 123 44 146 191

Chapter 10 12 950 12 950 12 950 17 950

Total 389 1,916 477 6,054 569 12,723 698 24,856

Est. House Cost 4,137 6,669 12,133

% of Estimated Cost

0.00 2.03 6.40 13.45 26.28

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

Cost/Point 0 #DIV/0! #DIV/0! #DIV/0! 98

Rating 109 0 0 0 0 0 0 0 37 3,616 Ch. 5 Subtotal Base

4

5

5 0 previously demolished apartment complex

5

3

3 0 mapquest

3

3 0 mapquest

3

3 0 mapquest

4

4 752 Minimum 2 person team for 1 day. Varies 

with size of operations.

Lot Design

5

5 0 section 015639-8

6

6 0 section 015639 appendix B

4

4 0 section 015639-1

4

4 0 section 015639-1

Cummulative

Emerald

(1) A natural resources inventory is completed under the direction of 

a qualified professional. 

(2) A plan is implemented to conserve the elements identified by the 

resource inventory as high priority resources. 

(3) Items listed for protection in the resource inventory plan are 

protected under the direction of a qualified professional. 

(4) Basic training in tree or other natural resource protection is 

provided for onsite supervisor.

(3) A lot is selected within one-half mile of six or more community 

resources (e.g., recreational facilities (such as pools, tennis courts, 

basketball courts), parks, grocery store, post office, place of worship, 

community center, daycare center, bank, school, restaurant, 

medical/dental office, laundromat/dry cleaner.) 

502.1 A knowledgeable team is established and team member roles 

are identified with respect to green lot design, preparation, and 

development. The project’s green goals and objectives are written 

into a mission statement. 

503.0 Intent. The lot is designed to avoid detrimental environmental 

impacts first, minimize any unavoidable impacts, and mitigate for 

those impacts that do occur. The project is designed to minimize 

environmental impacts and to protect, restore, and enhance the 

natural features and environmental quality of the lot. (To be awarded 

points allocated for design, the intent of the design shall be 

implemented.) 

503.1 Natural resources are conserved by one or more of the 

following:

502 Project Team, Mission Statement, and Goals

(2) A greyfield lot or an EPA-recognized brownfield lot is selected.

501.2 Mass Transportation. A range of mass transportation choices 

are promoted by one or more of the following:

(1) A lot is selected within one-half mile of pedestrian access to a 

mass transit system or within five miles of a mass transit station with 

provisions for parking.

(2) Walkways, street crossings, and entrances designed to promote 

pedestrian activity are provided. New buildings are connected to 

existing sidewalks and areas of development.

(3) Addition and Renovation Note: A renovation or addition project is 

implemented. (Points awarded for using an existing building and 

infrastructure.)

CH. 5 LOT DESIGN, PREPARATION, AND DEVELOPMENT

500.0 Intent. This section applies to lot development for the eventual 

construction of residential buildings, multi-unit buildings, or additions 

thereto that contain dwelling units. The buildings on the lot earn their 

own performance level by complying with the provisions of Sections 

303, 304, or 305.5, as applicable.

501.1 The lot is selected to minimize environmental impact by one or 

more of the following:

(1) An infill lot is selected.

ANSI National Green Building StandardTM Baseline Bronze Silver Gold

Bronze

Cost per SF ($)
APPENDIX B 315

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

2 0 section 015639-1

3

3 0 section 015639-4

1 Additional 

Point

Unknown, no grading plan was provided.

(a) Less than 25% 2

(b) 25 to 75% 3

(c) Greater than 75% 4

5

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

6

4

2 Additional 

Points

5 5 0 Virginia State Soil Erosion & Control 

Handbook to be followed

5

5

6

6

6 0 section 015713-1 part 1.1.B

Less than 15% impervious structure/driveway 

to land

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5 5 0

(4) A minimum of 75% of the roof is vegetated 

(green roof) 3

5

5 520 Allowed 1/2 day for professional to develop 

plan that includes noted actions. Include 

503.5(8) and 503.6 in plan. Plan needed for 

801.7.4 points.

4

4 165 See 503.5(1) for plan cost. Cost of 

hydroseed.

(a) Lot is 0% turf 4

(b) Greater than 0% to less than 25% 3

(c) 25% to less than 50% 2 2 222 28% mulched.

(d) 50% to 75% 1

5

5 535 See 503.5(1) for plan cost. 3 trees and 5 

shrubs. 

503.5 Landscape plan is developed to limit water and energy use 

while preserving or enhancing the natural environment. 

(1) A plan is formulated to restore or enhance natural vegetation that 

is cleared during construction. Landscaping is phased to coincide with 

achievement of final grades to ensure denuded areas are quickly 

vegetated.

(2) Turf grass species, other vegetation, and trees are selected that 

are native or regionally appropriate for local growing conditions.

(3) A percentage or all turf areas are limited. 

(4) Plants with similar watering needs are grouped (hydrozoning).

(d) placement of utilities under paved surfaces instead of yards.

(c) shared utility trenches or easements

Addition and Renovation Note: section 503.1 applies to additions that 

increase building footprint on the lot; and to renovations that include 

landscape, hardscape, and outdoor living area. (Additional points 

awarded for each strategy implemented.)

(3) All or a percentage of roads and parking are aligned with natural 

topography to reduce cut and fill.

(2) Hydrological/soil stability study for steep slopes is completed and 

used to guide the design of all buildings on the site.

Addition and Renovation Note: Section 503.2 applies to additions that 

increase building footprint on the lot; and to renovations that include 

landscape, hardscape, and outdoor living area. (Additional points 

awarded for each strategy implemented.)

503.2 Slope disturbance is minimized by one or more of the 

following: (Points awarded only if there are developable steep 

slopes on the lot.)

(1) All or a percentage of development on steep slopes is avoided.

(4) Long-term erosion effects are reduced through the design and 

implementation of terracing, retaining walls, landscaping, and 

restabilization techniques.

(5) Underground parking uses the natural slope for parking entrances.

(6) Ongoing maintenance of vegetation during construction is in 

accordance with TCIA A300.

(5) All tree pruning on site is conducted by a Certified Arborist.

503.3 Soil disturbance and erosion are minimized by one or more 

of the following: (Also see Section 504.3) (Points must be taken here 

to claim points in 504.1)

(3) All or a percentage of impervious surfaces are minimized and 

permeable materials are used for driveways, parking areas, 

walkways, and patios.

(a) tunneling instead of trenching

(b) use of smaller (low ground pressure) equipment or geomats to 

spread the weight of construction equipment

(1) Natural water and drainage features are preserved and used.

(2) A storm water management plan is developed and implemented 

that minimizes concentrated flows and simulates flows found in 

natural hydrology, e.g., vegetative swales, French drains, wetlands, 

drywells, and rain gardens.

(1) Construction activities are scheduled to minimize length of time 

that soils are exposed.

(2) Utilities are installed using one or more alternative means:

(3) Limits of clearing and grading are demarcated on the plan.

503.4 Storm Water Mgmt. Storm water is managed using one or 

more of the following low impact development techniques:
316 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

5

5 0 See 503.5(1) for plan cost. Plant 3 trees from 

503.5(2) to provide shade. See 505.2(1)

4

4 360 See 503.5(1) for plan cost. Add 3 trees.

3

3 0 section 015639-5

4

4 0 section 320190-2

4

4 175 See 503.5(1). Include additional 5 shrubs.

6

3

3

4

7 7 0 approximate w/ no site plan and scale

10

504 Lot Construction

4

4 888 3 days for one person to supervise. 

3

3 0 section 015639-1

4

4 0 section 015639-4

4

4 0 section 015639-6

5 5 0 section 015713-3

5

5 0 section 015639 and 015713

5

5 0 section 015713-4

5

5 0 section 310000-6

3

3

3 0

3 3 0 section 329113-3

See 504.1(2) and 503.3(2)

505 INNOVATIVE PRACTICES

4

4 0 site plan blown up appears to have a 15 foot 

parking space and a 7 foot leadwalk. This 

would constitute shared for the two units

4

505.2 Heat Island Mitigation. Any combination of the following 

strategies are provided for a minimum of 50% of the horizontal 

surface area of the hardscape:

5

tunneling instead of trenching, use of smaller equipment, use of low 

ground pressure equipment, use of geomats, shared utility trenches or 

easements. 

505.0 Intent. Innovative lot design, preparation and development 

practices are used to enhance environmental performance. Waivers 

or variances from local development regulations are obtained and 

innovative zoning practices are used to implement such pract

505.1 Driveways or parking areas are shared. Waivers or variances 

from local development regulations are obtained to implement such 

practices as applicable. In a multi-unit project, parking capacity is not 

to exceed the local minimum requirements.

(8) Utilities are installed using one or more alternative means such as: 

(1) Fencing or equivalent to protect trees and other vegetation is 

installed.

(4) Topsoil is stockpiled and stabilized for later use to establish 

landscape plantings.

(5) Soil compaction from construction equipment is reduced by 

distributing the weight of the equipment over a larger area (laying 

lightweight geogrids, mulch, chipped wood, plywood, OSB, metal 

plates, or other materials capable of weight distribution in the pathway 

of the equipment).

(6) Disturbed areas that are complete or to be left unworked for 

greater than 21 days are stabilized within 14 days using methods as 

recommended by the EPA or in the approved storm water pollution 

prevention plan (SWPPP), where required.

(7) Soil is improved with organic amendments and mulch.

(2) 14 to less than 21 dwelling units per acre

(2) Trenching, significant changes in grade, and compaction of soil 

and critical root zones in “tree save” areas are avoided.

(3) Sediment and erosion controls are installed and maintained in 

accordance with the storm water pollution prevention plan (SWPPP), 

where required.

(3) Damage to designated existing trees and vegetation is mitigated 

during construction through pruning, root pruning, fertilizing, and 

watering.

504.3 Soil disturbance and erosion. Onsite soil disturbance and 

erosion are minimized by one or more of the following: (also see 

section 503.3)

(1) Limits of clearing and grading are staked out.

504.2 Trees and vegetation. Designated trees and vegetation are 

preserved by one or more of the following:

(2) “No disturbance” zones are created using fencing or flagging to 

protect vegetation and sensitive areas from construction activity. 

504.0 Intent. Environmental impact during construction is avoided to 

the extent possible; impacts that do occur are minimized, and any 

significant impacts are mitigated.

504.1 Onsite supervision and coordination is provided during 

clearing, grading, trenching, paving, and installation of utilities to 

ensure that specified green development practices are implemented 

(Also see Section 503.3.)

(5) Species and locations for tree planting are identified that will 

provide summer shading of streets, parking areas, and buildings to 

moderate temperatures. 

(6) Vegetative wind breaks or channels are designed as appropriate 

for local conditions.

(1) 7 to less than 14 dwelling units per acre (4047 m2)

503.8 Environmentally Sensitive Areas.

(2) Compromised Environmentally Sensitive Areas are mitigated or 

restored.

(8) An integrated pest management plan to minimize chemical use in 

pesticides and fertilizers is developed.

503.9 Density. The average density on a net developable area basis 

is: 

(3) 21 or greater dwelling units per acre

(7) Onsite tree trimmings or stump grinding of regionally appropriate 

trees are used to provide protective mulch during construction and 

cleared trees are recycled as saw lumber or pulp wood.

503.6 Wildlife habitat. Measures are planned that will support 

wildlife habitat.

503.7 Mixed use development is incorporated.

(1) Environmentally Sensitive Areas are avoided.
APPENDIX B 317

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Base Pts.

99 0 0 0 0 0 28 0 20 4,686 Ch. 6 Subtotal 

Cost/Point 0 #DIV/0! #DIV/0! 0 234

15

12 12 0 second floor is worst case - 1041 sf

9

6

Mandatory

1 Addt'l Point

3 Addt'l Point

6 Add'l Points

1 Addt'l Point

3 pts per 

system (9 pts 

max)

9 0

roof truss at 24", studs at 24", 2 stud corners

3 30 Floors - 26x38

3 3 0

Wall precuts can be used for 1st and 2nd or 

panelize

3

3

1

4

4 1,040

Have suppliers prepare use reports with their 

bid at no charge for joists, wall studs and 

rafters. Allowed 1days of professional time to 

prepare sheathing layouts for prints. O/H.

 

(1) Floor system. 4 4 0

(2) Wall system. 

4 4 0 These should have been shipped as precuts 

or panels

(3) Roof system. 4 4 0

13

13

Max 8 

points

(1)first stacked story 4 4 0

(2) for each additional story 2

Max 12 

points

5

CHAPTER 6: RESOURCE EFFICIENCY

601.6 Stories above grade are stacked, such as in 1 1/2 and 2 story 

or greater structures. The area of the upper story shall be at least 

50% of the area of the story below, based on areas with a minimum 

ceiling height of 7 feet. 

(4) modular construction for the entire building located above grade.

601.5 Pre-cut or pre-assembled components, or panelized or precast 

assemblies are utilized for 90% for the following system or building.

601.7 Site applied finishing materials. Building materials or 

assemblies that do not require additional site applied material for 

finishing are utilized. 

(1) 90% or more of the installed material or assembly listed below:

(1) Less than or equal to 1,000 square feet

(2) Less than or equal to 1,500 square feet

(3) Less than or equal to 2,000 square feet

(4) Less than or equal to 2,500 square feet

(1) Shading of hardscaping: Shade from existing or new vegetation is 

provided (within five years) or from trellises. Shade of hardscaping is 

to be measured on the summer solstice at noon.

(2) Light colored hardscaping: Horizontal hardscaping materials are 

installed with a solar reflectance index of 29 or greater. 

601.1 Conditioned floor area, as defined by ICC IRC calculated in 

accordance with ANSI Z765, is limited. Dwelling unit size is to be 

601 Quality of Construction Materials and Waste

601.0 Intent. Design and construction practices that minimize the 

environmental impact of the building materials are incorporated; 

environmentally efficient building systems and materials are 

incorporated; and waste generated during construction is reduc

(5) Greater than 4,000 square feet (373 m2

)

Multi-Unit Building Note: For a multi-unit building, use a weighted 

average of the individual unit sizes in qualifying for available points. 

601.2 Material Usage. Building-code-compliant structural systems 

or advanced framing techniques that optimize material usage are 

implemented. Points awarded for each system or framing technique 

implemented.

For every 100 square feet over 4,000 sf, one point is to be added 

to Table 303, category 7 for each performance level. 

Addition Note: Additions more than 75% of existing building. 

Section 601.1 does not apply to additions with an area of more than 

75% of the area of the existing building or dwelling unit. 

Additions less than or equal to 75% of existing building. Where 

the addition area is less than or equal to 75 percent of the existing 

buidling or dwelling unit area, points are awarded as follows:

(1) The existing structure is 50% to 75% of total building or dwelling 

unit area.

(2) The existing structure is 76% to 99% of total building or dwelling 

unit area.

Renovation Note: When renovations increase the total existing 

building or dwelling unit area by 1 percent or less, points are awarded 

as follows:

(a) The total area of the existing building or dwelling unit is less than 

or equal to 2500 sf.

(a) The total area of the existing building or dwelling unit is greater 

than 2500 sf.

(5) manufactured home construction for the entire building located 

above grade.

601.3 Building dimensions and layouts are designed to reduce 

material cuts and waste.

(1) When used for at least 80% of floor area

(3) When used for at least 80% of roof area 

(2) When used for at least 80% of wall area

(4) When used for at least 80% of cladding or siding area

(5) When used for at least 80% of penetrations or trim area

601.4 Detailed framing or structural plans, material quantity lists and 

onsite cut lists for framing, structural materials, and sheathing 

materials are provided.
318 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

5 0 vinyl windows

5 3,046

spec siding to be pre finished fiber cement.

3

4

(1) Adobe

(2) Concrete/Masonry

(3) Logs 

(4) Rammed earth

Maximum 

number of 

points 5 

(1) Installing a porch roof or awning.

(2) Extending the roof overhang.

(3) Recessing the exterior door.

Main entrance door 3 3 0

Additional covered door assembly 1 1 0

4

Inches Rainfall*

Eave Overhang 

(Inches)

Rake Overhang 

(Inches)

Less than 20 12 12

21 to 40 12 12 4 0 12" rake and 16" eave overhangs

41 to 70 18 12

More than 70 24 12

0

1

Mandatory 0 0 Not applicable.

4

3 3 0

4

4 0

section 034816-1

Mandatory

0 0

section 31000-6

4

2

602.8 Termite-resistant materials are used as follows: 

(1) In areas of slight to moderate termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, floors, 

concealed roof spaces not accessible for inspection, exterior decks, 

and exterior claddings within the first 2 feet above the top of the 

foundation. 

602.7 Termite barrier. Continuous, physical,foundation termite 

barrier used with or without low toxicity treatment is installed in 

geographical areas that have subterranean termite infestation 

potential determined in accordance with Figure 6(3).

602.6 Finish grade at all sides of building is sloped to provide a 

minimum of 6 inches of fall within 10 feet of the edge of the building. 

Where lot lines, walls, slopes or other physical barriers prohibit 6 

inches of fall within 10 feet, the final grade 

602.3.2 Interior and exterior foundation perimeter drains are installed 

and sloped to discharge to daylight, dry well, or sump pit.

602.4 Drip edge is installed at eaves and gable roof edges.

602.5 A gutter and downspout system with extensions, or splash 

blocks and effective grading, are provided to carry water at least 5 

feet away from perimeter foundation walls. 

602.3 Foundation Drainage

602.3.1 Where required by the IRC/IBC for habitable and usable 

spaces below grade, exterior drain tile is installed.

Addition Note: Section 602.2 applies to the new construction portion 

of additions. 

Renovation Note: Section 602.2 applies to renovations that alter the 

existing roof.

Table 602.2

Minimum Roof Overhang for One- & Two-Story Buildings

602.2 Roof overhangs, based on inches of rainfall in Table 602.2, are 

provided over at least 90% of exterior walls to protect the building 

envelope.

602.0 Intent. Design and construction practices are implemented that 

enhance the durability of materials and reduce in-service 

maintenance.

602.1 Entries at exterior door assemblies, inclusive of side lights, are 

covered by one of the following methods below to protect the building 

from the effects of precipitation and solar radiation. A projection factor 

of at least 0.375 is provided. Eastern and western facing entries in 

Climate Zones 1, 2, and 3, as determined in accordance with Figure 

6(1), shall have a projection factor of at least 1.0 unless otherwise 

protected from direct solar radiation by other means (e.g. screen wall, 

vegetation).

602 Enhanced Durability and Reduced Maintenance

601.8 Foundations such as frost-protected shallow foundations, pier 

and pad foundations, post foundations and other similar foundation 

types are designed and constructed.

601.9 One or more of the following above grade wall systems that 

provide sufficient structural and thermal characteristics are used for at 

least 75% of the gross exterior wall area of the building: 

(c) Window, skylight, and door assemblies not requiring paint or stain 

on exterior and/or interior surfaces.

(d) Wall coverings or systems not requiring paint or stain or other type 

of finishing application.

(a) Pigmented, stamped, decorative, or final finish concrete or 

masonry.

(2) 50% to less than 90% of the installed building material or 

assembly listed below:

(b) Trim not requiring paint or stain.
APPENDIX B 319

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

6

Mandatory

0 0 section072500

Mandatory

0 0

not required in seattle residential code

4 Not applicable.

(1) Rubberized coating, or

(2) Drainage mat.

6

6 0 A7.2, A7.5, and A7.8

(2) Roof valleys.

3

(2) A green (landscaped) roof system.

3

3 58 Include an under cabinet recycling container 

and back porch bin.

(2) Compost facility provided on-site. 3 3 72

 1 (Max 12 

points)

3

4

4 0

Points per Table 

604.1

Material Percentage Recycled Content Per 2 Minor Per 2 Major

25% - 50% 1 2

50% - 75% 2 4 Fibercement siding & aggregate at 

construction entrance for minors.

75% 3 6 9 0 Gypsum board and cellulose insulation. Note: 

specify correct gypsum board.

6

6 0 section 017419-1

7

602.10 In areas where there has been a history of ice forming along 

the eaves causing a backup of water, an ice barrier is installed at roof 

eaves and is extended at least 24” inside the exterior wall line of the 

building, in accordance with the IRC/IBC.

Recycled Content

(a) Materials are ground or otherwise safely applied onsite as soil 

amendment or fill. At least 50% (by weight) of construction and landclearing waste shall be diverted from landfill.

605.2 Onsite recycling measures following applicable regulations and 

codes are implemented, such as the following:

Recycled Construction Waste 

605.0 Intent. Waste generated during construction is recycled. 

Note: All waste classified as hazardous shall be properly handled and 

disposed. (Points not awarded for hazardous waste removal.) 

605.1 A Construction Waste Management Plan is developed, 

implemented, and posted at the jobsite with a goal of recycling or 

salvaging a minimum of 50% (by weight) of construction and landclearing waste.

604.1 Building materials with recycled content are used for at least 

two minor and/or two major components of the building.(NOTE: Does 

not specify PConsumer. Implication is that max. allowable is 4 

materials. 9 points is max. in scoring tool. Have to use highest % to 

receive max pts.)

Table 604.1

603.3 Scrap Materials. Facilitation for sorting and reuse of scrap 

building material (e.g. provide a central storage area or dedicated 

bins.)

604 Recycled-Content Building Materials

603.1 Existing buildings and structures are reused, modified or 

deconstructed in lieu of demolition. (One point awarded for every 

200 sq. ft., 18.5m2, of floor area.)

603.2 Reclaimed and/or salvaged materials and components are 

used.Total material and labor cost of salvaged materials shall equal or 

exceed 1% of total construction costs.

602.14 Recycling. Occupant recycling is facilitated by one or more of 

the following methods:

(1) A built-in collection space in each kitchen and an aggregation/pickup space in a garage, covered outdoor space or other area for 

recycling containers.

603 Reused or Salvaged Materials 

603.0 Intent. Practices that reuse or modify existing structures, 

salvage materials for other uses, or use salvaged materials in 

building’s construction are implemented. 

602.13 Roof Surfaces. A minimum of 90% of roof surfaces are 

constructed of one or both of the following:

(1) Products which meet the requirements of the ENERGY STAR® 

cool roof certification or equivalent.

(4) At roof-to-wall intersection and at roof-to-chimney intersections.

(5) A drip cap is provided above windows and doors that are not 

Flashed or protected by covering per Section 602.1.

602.12 Flashing details are shown on plans and flashing is installed at 

all of the following locations, as applicable:

(1) Around exterior fenestrations, skylights and doors.

(3) Deck/balcony to building intersections.

(2) In areas of moderate to heavy termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, floors, 

concealed roof spaces not acessible for inspection, exterior decks, 

and exterior claddings within the first 3 feet above the top of the 

foundation. 

(3) In areas of very heavy termite infestation probability (as defined by 

Figure 6(3)) for the foundation, all structural walls, floors, concealed 

roof spaces not accessible for inspection, exterior decks, and exterior 

claddings.

602.9 Where required by the IRC/IBC, a water-resistive barrier and/or 

drainage plane system is installed behind exterior veneer and/or 

siding. 

602.11 Enhanced foundation waterproofing is installed:
320 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Max 6

3

3 0 section 017419 - asphalt, concrete, wood, 

glass, gypsum, paint, insulation

1 3 0

Max 8

(b) engineered wood

(c) bamboo

(d) cotton

(e) cork

(f) straw

3

2 0 Wood cabinets and wood trim

6

6 0 engineered wood, osb walls, lvl beams

1 

(2 pts max)

(a) AFF American Tree Farm System®

606.2(1) Where a minimum of two certified 

wood-based products are used for minor 

elements of the building, such as all trim, 

cabinetry, or millwork. 3

3 245 Specify Masonite doors for FSC certified. 

Estimated added cost of $35/door. And 

kitchen cabinets at no cost.

4

4 0 section 061600 part 1.4 - sheathing FSC; 

section 061753 part 1.6 - trusses FSC

6 pts. max.

2 0 2 225 Specify that OSB comes from a mill that 

complies. Identify another material that 

complies; allowed for added cost.

Max 9 points

3 0 Engineered wood - OSB floor and roof and 

LVL

(3) Roof or floor trusses. 6 0 Ijoists and floor truss & roof truss components.

10 points max.

2 2 0

Use indigenous stone for driveway base.

2

8 0 Specify OSB from local mill. Deck lumber, 

windows and siding locally sourced.

(c) Forest Stewardship Council (FSC)

(g) natural fiber products made from crops (soy or corn-based)

(h) products with the minimum biobased contents of the USDA 7 CFR 

Part 2902

606.1(3) For each additional biobased material used for more than 

.5% of the project’s projected building material cost. 

606 Renewable Materials

606.0 Intent. Building materials derived from renewable resources 

are used.

606.1 The following biobased products are used. (Note: 606.1 and 

606.2 denote % of project mat'l cost req'd.)

(a) certified solid wood in accordance with Section 606.2

(b) Other methods approved by the NAHB Research Center (the 

Adopting Entity).

605.3 Recycled Construction materials: Construction materials (e.g., 

wood, cardboard, metals, drywall, plastic, asphalt roofing shingles, or 

concrete) are recycled offsite.

(1) A minimum of two types of materials are recycled.

(2) for each additional recycled material.

606.1(1) At least two types of biobased materials are used, each for 

more than .5% of the project’s projected building material cost. 

Combined 8 pts Max

606.1(2) At least two types of biobased materials are used, each for 

more than 1% of the project’s projected building material cost. 

606.2 Wood-based products are certified to the requirements of one 

of the following recognized product programs: 

(b) Canadian Standards Association’s Sustainable Forest 

Management System Standards (CAN/CSA Z809)

606.3 Manufacturing Energy. Materials are used for major 

components of the building that are manufactured using a minimum of 

33% of the primary manufacturing process energy derived from 

renewable sources, combustible waste sources, or renewable energy 

credits (RECs). (2 points awarded per material.)

608 Indigenous Materials

(d) Program for Endorsement of Forest Certification Systems 

(PEFC)

(e) Sustainable Forestry Initiative Program (SFI)

(6) Other product programs mutually recognized by PEFC

(2) Engineered wood or engineered steel products.

606.2(2) Where a minimum of two certified wood-based products are 

used in major elements of the building, such as walls, floors, or roof.

(1) Lighter, thinner brick with bed depth less than 3 inches, brick with 

coring above 25%, or both.

607 Resource-Efficient Materials

607.1 Products containing fewer materials are used to achieve the 

same end-use requirements as conventional products, including but 

not limited to: (3 points awarded for each material.)

(i) other biobased materials with a minimum of 50 percent biobased 

content (by weight or volume).

608.1 Indigenous materials are used for major elements of the 

building. 

609 Life Cycle Analysis

(1) one type of material.

(2) For each additional material.
APPENDIX B 321

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Max 15 points

(1) Per product/system comparison 3

(2) Whole building LCA analysis 15

Max 10 points

Base Pts. 49 0 0 966 52 3,987 53 6,625 26 3,252 Ch. 7 Subtotal 

Cost per 

point

0 #DIV/0! 77 125 125 

Performance path selected at all levels.

30 0 (30) 0 

Performance path selected at all levels.

Mandatory Practices

Mandatory

0 520 Review by verifier. 4 hrs at professional time. 

Could be blower door testing. Add'l hours 

alotted Ch.10.

701.4.1 HVAC SYSTEMS

Mandatory

0 0 2006 IECC requirement. 

Mandatory

0 0 

701.4.2 DUCT SYSTEM

Mandatory

0 0 

Mandatory 0 0 

Mandatory

0 0 

Mandatory

0 0 

Mandatory

0 0 

Mandatory

0 0 

701.4.3.3 WALLS 

Mandatory

0 0 

Mandatory

0 0 

(1) Windows and Doors. Caulking, gasketing, adhesive flashing 

tape, foam sealant, or weatherstripping is installed forming a 

complete air barrier. 

(2) Band Joist and Rim Joists. Band and rim joists are insulated 

and air sealed.

(1) Floors (Including insulated floors above garages and cantilevered 

floors)

(2) Crawlspace. Where insulated, crawlspace wall insulation is 

permanently attached to the walls. Exposed earth in unvented 

crawlspaces is covered with continuous vapor retarder with 

overlapping joints taped or masticed. 

(b) Batt and loose-fill insulation is held in place by permanent 

attachments or systems in accordance with the manufacturer’s 

instructions.

(a) Insulation is installed to maintain permanent contact with the 

underside of the subfloor decking, enveloping any attached ductwork 

within the thermal envelope without compression or air gaps in the 

insulation. This practice does not apply to ducts or other mechanical 

equipment that are adjacent to the underside of the subfloor.

(1) Insulation shall be installed in accordance with the manufacturer’s 

instructions or local code, as applicable.

701.4.3.2 FLOOR / FOUNDATION / CRAWLSPACE

701.4.3 INSULATION and AIR SEALING

701.4.2.2 Building cavities are not used as supply ducts. 

(2) Shafts (duct shaft, piping shaft/penetrations, flue shaft.) Openings 

to unconditioned space are fully sealed with solid blocking or flashing 

and any remaining gaps are sealed with caulk or foam. Fire-rated 

collars and caulking are installed where re

701.4.3.1 GENERAL Insulation and air sealing is in accordance with 

the following: 

701.1.2 Minimum Prescriptive Path Requirements. A building complying with 

section 703 shall obtain a minimum of 30 points from Section 703, and shall include a 

minimum of two practices from Section 704. 

701.1.3 Alternative Bronze Level Compliance. As an alternative, any building that 

qualifies as an ENERGY STAR qualified home or equivalent achieves the Bronze Level 

for Chapter 7.

701.4.2.1 Ducts are sealed with tape complying with UL 181, mastic, 

gaskets, or an approved system as required by the ICC IRC (Section 

M1601.3.1, or ICC IMC Section 603.9) to reduce leakage.

701.2 Emerald Level Points. The Performance Path shall be used to achieve to the 

Emerald Level.

701.4.1.1 Space heating and cooling system/equipment shall be 

sized according to heating and cooling loads calculated using ACCA 

Manual J or equivalent. 

701.4.1.2 Where installed, as a primary heat source in the building, 

radiant or hydronic space heating system is designed using industryapproved guidelines (e.g. ACCA Manual J, GAMA H-22, or an 

accredited design professional's and manufacturer's recommen

701.3 A review by the Adopting Entity or designated third party shall 

be conducted to verify design and compliance with Chapter 7. 

701.1.1 Minimum Performance Path Requirements. A building complying with 

Section 702 shall exceed the baseline minimum performance required by the IECC by 

15%, and shall include a minimum of two practices from Section 704.

609.1 A more environmentally preferable product or assembly for an 

application based upon the use of a Life Cycle Assessment (LCA) tool 

compliant with ISO 14044 or other recognized standards that 

compare the environmental impact of building materials, as

610 Innovative Practices

610.1 Manufacturer's environmental managment system 

concepts. Product manufacturer’s operations and business practices 

include environmental management system concepts and the 

production facility is ISO 14001 certified or equivalent. The aggregate 

value of building products from ISO 14001 certified or equivalent 

production facilities is at least 1% or more of the estimated total 

building materials cost. (1 point awarded for every percent.) 

701.1 Mandatory requirements. The building shall comply with either Section 702 

(Performance Path) or Section 703 (Prescriptive Path). Items listed as “Mandatory” in 

Section 701.4 apply to both the Performance and Prescriptive Paths.

CHAPTER 7: ENERGY EFFICIENCY
322 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory 0 0 

Mandatory

0 0 

Mandatory

0 0 

Mandatory

0 0 

Mandatory

0 0 

 1 Add'l Pt

Mandatory

0 0 

 2 Add'l Pts

701.4.4 FENESTRATION

Mandatory

0 0 

Table 701.4.4.1

Fenestration Specifications

Climate Zones U-Factor SHGC

1 and 2 0.65 0.4

3 0.4 0.4

4 to 8 0.35 Any 0 0 

1 to 3 0.75 0.4

4 to 8 0.6 Any

702 Performance Path

Mandatory

Performance path.

(1) 15%

30

30 446 (30) slab insulation R5 to R10, window change to 

U=0.33 to 0.30 and shgc=0.40 to 0.50

(2) 30%

60

60 3,481 (60) 1" foam sheathing, reduce ACH50 to 3.93; 

upgrade boiler/hot water heater to 0.94 from 

0.90, and exterior doors to u-value to 0.30 

from 0.40

(3) 50%

100 100 6,500 (100) Closed loop solar hot water and tighten 

building ACH50 from 3.93 to 2.75

(4) 60%

120

120 3,103 2" of exterior foam; triple pane u=0.22 and 

shgc=0.60 windows; exterior doors to u=0.18; 

infiltration improved toACH50=1.98; boiler eff 

to 0.95

703 Prescriptive Path 

704 Additional Practices

704.2 Lighting and Appliances

4

8

8 125 $25 per fixture; 5 fixtures

704.2.1 Hard-wired lighting meets one of the following: 

704.1 Application of Additional Practice Points. Points from 

Section 704 can be added to points earned in Section 702 

(Performance Path), Section 703 (Prescriptive Path) or Section 

701.1.3 (alternative Bronze Level compliance).

(1) A minimum of 50% of the total hard-wired lighting fixtures, or the 

bulbs in those fixtures, qualify as ENERGY STAR or equivalent.

(2) A minimum of 50% of the total hard-wired lighting fixtures qualify 

as ENERGY STAR or equivalent.

(3) Eave vents. Where ceiling/attic assemblies or designs have eave 

vents, baffles, or other means shall be utilized to minimize air 

movement into or under the insulation.

701.4.4.1 The NFRC-certified U-factor and SHGC windows, exterior 

doors, skylights, and tubular daylighting devices (TDDs) are in 

accordance with ENERGY STAR, or equivalent, or Table 701.4.4.1. 

Decorative fenestration elements with a maximum area of 15 sq

Skylights and TDDs 

(max. certified ratings)

Windows and Exterior Doors (maximum 

certified ratings)

701.4.3.4 CEILINGS AND ATTICS

(5) Exterior Architectural features. Code required building 

envelope insulation and air sealing is not disrupted at exterior 

architectural features such as stairs and decks. 

(a) Sill sealer, or other material that will expand and contract, shall be 

installed between foundation and sill plate.

(3) Between Foundation and Sill Plate Bottom Plate

(4) Skylights and kneewalls. Skylight shafts and knee walls are 

insulated to the same level as the exterior walls.

(1) Attic access (except unvented attics). Attic access, knee wall 

door, or drop down stair is covered with insulation and gasketed. 

Knee wall door is insulated unit or is covered with insulation.

(b) Caulk or the equivalent is installed to seal the bottom plate of 

exterior walls.

(2) Recessed Lighting. Recessed light fixtures that penetrate the 

thermal envelope are airtight, IC rated, and sealed with gasket, caulk, 

or foam.

Renovation Note: Replace existing recessed lights that penetrate 

the thermal envelope with airtight, IC-rated recessed light fixtures that 

are sealed to drywall with gasket, caulk, or foam. (Additional point 

per fixture)

702.2 Energy efficiency features are implemented to achieve energy 

cost performance that exceeds ICC IECC by the following. A 

documented analysis using software in accordance with ICC IECC, 

Section 404, or ICC IECC Section 506.2 through 506.5, applied a

Renovation Note: Provide blocking or baffle at eaves to ensure 

ventilation over attic iinsulation.

702.1 Points from Section 702 (Performance Path) shall not be 

combined with points from Section 703 (Prescriptive Path).
APPENDIX B 323

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

2 0 plans A8.1

(1) 25% of lighting 2

(2) 50% of lighting 4

2

(1) Refrigerator 5 5 158 

(2) Dishwasher 2 2 0 section 113100-2

(3) Washing machine 4 4 348 

704.2.6 Induction cooktop is installed. 1

1

5

Climate Zone and Overhang Depth

Vertical Distance 

between bottom of 

overhang and top of 

window sill

1 through 3 2' 8" <7' 4"

1 through 3 2' 8" <6' 4"

1 through 3 2' 4" <5' 4"

1 through 3 2' 0" <4' 4"

1 through 3 2' 0" <3' 4"

4 through 6 2' 4" <7' 4"

4 through 6 2' 4" <6' 4"

4 through 6 2' 0" <5' 4"

4 through 6 2' 0" <4' 4"

4 through 6 1' 8" <3' 4"

7 and 8 2' 0" <7' 4"

7 and 8 1' 8" <6' 4"

7 and 8 1' 8" <5' 4"

7 and 8 1' 4" <4' 4"

7 and 8 1' 0" <3' 4"

1

3

(9) Return air or transfer grilles/ducts are in accordance with Section 

704.4.5. 

704.3.1.3 Passive cooling design features are in accordance with 

three or more of the following:

704.3.1.2 Automated solar protection is installed to provide shading 

for windows.

Points for three items:

(c) Sloped skylights on slopes facing within 45o of true South, East or 

West are less than 1.5% of the Finished Ceiling area

(7) Overhangs or adjustable canopies or awnings or trellises provide 

shading on south facing glass for the appropriate climate zone in 

accordance with Table 704.3.1.1:

(8) The south face windows have a SHGC of 0.40 or higher.

Table 704.3.1.1 Southern Window Overhang Depth

(5) Vertical glazing area is less than 8% of gross Conditioned Floor 

Area on the north face, and glazing is ENERGY STAR compliant or 

equivalent.

(6) Skylights, where installed, are in accordance with the following:

(a) Shades and insulated wells are used and all glazing is ENERGY 

STAR compliant or equivalent.

(b) Horizontal skylights are less than 0.5 % of Finished Ceiling Area

(1) The long side (or one side if of equal length) of the building faces 

within 20o of true south.

(2) Vertical glazing area is between 5% and 7% of gross Conditioned 

Floor Area on the south face (also see Section 704.3.1.1(8)).

(3) Vertical glazing area is less than 2% of gross Conditioned Floor 

Area on the west face, and glazing is ENERGY STAR compliant or 

equivalent.

(4) Vertical glazing area is less than 4% of gross Conditioned Floor 

Area on the east face and glazing is ENERGY STAR compliant or 

equivalent.

704.2.7 Occupancy sensors are installed for a minimum of 80% of 

hardwired lighting outlets.

704.3.1 Solar space heating and cooling.

704.3 Renewable Energy/Solar Heating and Cooling

704.2.4 Tubular daylighting device (TDD) or a skylight with sealed, 

insulated, low-E glass is installed in rooms without windows. (Points 

awarded per building.)

704.2.5 ENERGY STAR or equivalent appliance(s) are installed:

(3) A minimum of 80% of the exterior lighting wattage has an 

efficiency of at least 40 lumens per watt or be a solar powered light 

fixture. 

704.2.2 The number of recessed light fixtures that penetrate the 

thermal envelope are less than 1 per 400 square feet of total 

conditioned floor area and are in accordance with Section 

701.4.3.4(2). 

704.2.3 Occupancy sensors are installed on indoor lights, and photo 

or motion sensors are installed on outdoor lights to control lighting. 

704.3.1.1 Sun-tempered Design: Building orientation, sizing of 

glazing, and design of overhangs are in accordance with all of the 

following:
324 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1

(c) Covered porches

4

704.3.2 Solar water heating

SEF - Electric Tank SEF - Gas Tank POINTS

1.30 - 1.50 0.85 - 1.00 8

1.51 - 1.80 1.01 - 1.20 11

1.81 - 2.30 1.21 - 1.50 14

2.31 - 3.00 1.51 - 2.00 17

 3.01 2.01 20

1

704.3.3.1 Photovoltaic panels are installed on the property. (Points 

awarded per every 100 watts DC of the rated PV system) 

704.3.2.1 Solar water heater. SRCC (Solar Rating & Certification 

Corporation) OG 300 rated, or equivalent, solar domestic water 

heating system is installed. Solar Energy Factor (SEF as defined by 

SRCC) is in accordance with Table 704.3.2.1.

704.3.3 Additional renewable energy options

Table 704.3.2.1 - Solar Hot Water Systems

(a) Thermal mass is solid and a minimum of 3” in thickness. Where 

two thermal mass materials are layered together (e.g. ceramic tile on 

concrete base) to achieve the appropriate thickness, they are fully 

adhered to (touching) each other. 

(b) Thermal mass directly exposed to sunlight must be provided in the 

following minimum ratios: 

(i) Above latitude 35o: 5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(ii) Latitude 30o to 35o: 5.5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(iii) Latitude 25o to 30o: 6 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(c) Thermal mass not directly exposed to sunlight is permitted to be 

used to achieve thermal mass requirements of Section 704.3.1.4 (2) 

based on a ratio of 40 square feet of thermal mass for every 1 square 

foot of south facing glazing. 

(3) In addition to return air or transfer grilles/ducts required by Section 

704.3.1.1, provisions for forced airflow to adjoining areas are 

implemented as needed. 

(6) Roofing material is installed with a minimum 0.75 inch continuous 

air space offset from the roof deck from eave to ridge.

(2) Additional thermal mass for any room with south-facing glazing of 

more than 7% of the finished floor area is provided in accordance with 

the following:

704.3.1.4 Passive solar heating design. In addition to the suntempered design features in Section 704.3.1.1, all of the following are 

implemented: 

(1) Additional glazing, no greater than12%, is permitted on the south 

wall. This additional glazing is in accordance with the requirements in 

Section 704.3.1.1. 

(4) Solar reflective roof or radiant barrier is installed in Climate Zones 

1, 2 or 3 and roof material meets a 3 year aged criteria of 0.50.

(5) Internal exposed thermal mass is a minimum of three inches in 

thickness. Thermal mass consists of concrete, brick, and/or tile that 

are fully adhered to a masonry base or other masonry material and is 

in accordance with one or a combination of the fo

(a) A minimum of one square foot of exposed thermal mass of floor 

per three square feet of gross finished floor area. 

(b) A minimum of three square feet of exposed thermal mass in 

interior walls or elements per square foot of gross finished floor area.

(b) Moveable awnings or louvers

(d) Attached or detached conditioned/unconditioned enclosed space 

that provides full shade of east and west windows (e.g., detached 

garage, shed or building)

(2) Overhangs are installed to provide shading on south-facing 

glazing in accordance with Section 704.3.1.1(7). (Points not 

awarded if points are taken under 704.3.1.1.)

(3) Windows and/or venting skylights are located to facilitate cross 

ventilation.

(1) Exterior shading is provided on east and west windows using one 

or a combination of the following strategies:

(a) Vine covered trellises with the vegetation separated a minimum of 

1 foot from face of building.

Points for one additional item:
APPENDIX B 325

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

0.5

704.4 Ducts

5

15

15 0 hydronic boiler w/ radiators

15

12

5

Plans indicate returns every room.

704.5 HVAC Design and Installation

1

1 0 The code does not require Manual S, 

however, Manual D, code required; references 

using S.

1

1 0 Standard.

3

3 0 Specify in scope.

Standard.

Standard.

Standard.

Standard.

149 Allow team of 2 - 2 hours at field rate.

Standard.

1

4

5

5 0 included in 30% verification

(a) 5 ACH50 0.25 nat 3

(b) 4 ACH50 0.2 6 6 0 (6) $ included in performance rating

(c) 3 ACH50 0.15 9 9 0 (9) 0 $ included in performance rating

(2) Refrigerant charge is verified by super-heat and/or sub-cooling 

method.

2. Fossil fuel furnace and water heater is sealed combustion or power 

vented in accordance with Section 901.1.

(3) Burner is set to fire at nameplate input.

704.6.1 Third party onsite inspection is conducted to verify 

conformance with all of the following, as applicable. Minimum of 2 

inspections are performed. One inspection after insulation is installed 

and prior to being covered, and another inspection upon completion of 

the project. Where multiple building or dwelling units of the same 

model are built by the same builder, a representative sample 

inspection of a minimum of 15% of the buildings or dwelling units is 

permitted. 

(5) Total air flow is within 10% of design flow.

704.5.5 Manufacturer’s label or printed specifications for sealed air 

handler (except furnaces) indicates the leakage is less than or equal 

to 2% of design airflow at a pressure of 1-inch w.g. (1250 Pa). Air 

handlers are tested with inlets, outlets, an

(4) Air handler setting/fan speed is set per manufacturer’s 

instructions.

704.5.4 HVAC equipment operates using an alternate refrigerant 

containing no HCFCs. (Points awarded only until January 20, 2010.)

(6) Total external system static does not exceed equipment capability 

at rated airflow. 

704.3.3.2 Other onsite renewable energy source is installed (e.g., 

wind energy, onsite micro-hydro power, active solar space heating 

systems). (Points awarded per every 1/10 kW of the system) 

704.4.1 Duct system is sized, designed, and installed according to 

ACCA Manual D or equivalent.

(2) Heating and cooling ducts and mechanical equipment are 

installed within the conditioned building space .

(1) Start-up procedure is performed according to manufacturer’s 

instructions.

704.4.2 Space heating is provided by a system that does not include 

air ducts.

704.4.4 Ductwork is in accordance with all of the following: 

(1) Building cavities are not used as return ductwork.

704.4.3 Space cooling is provided by a system that does not include 

air ducts.

704.5.2 HVAC contractor and service technician are certified by a 

nationally or regionally recognized program such as North American 

Technician Excellence, Inc. (NATE), Building Performance Institute 

(BPI), Radiant Panel Association, or manufacturers’ tr

704.5.3 Performance of the heating/cooling system is verified by the 

HVAC contractor in accordance with all of the following: 

(3) Ductwork is not installed in exterior walls 

704.4.5 Return ducts or transfer grilles are installed in every room 

with a door. This practice does not apply to bathrooms, kitchens, 

closets, pantries, and laundry rooms. 

704.5.1 ACCA Manual S or equivalent is used to select heating and/or 

cooling equipment.

704.6 Installation and Performance Verification

(2) Building envelope air sealing is installed.

The maximum leakage rate is in accordance with:

704.6.2 Third party testing is conducted to verify performance. 

704.6.2.1 Building envelope leakage rate is demonstrated by blower 

door test. In addition to the test, the following practices are required:

1. Whole building ventilation is provided in accordance with Section 

902.2.

(1) Ducts are installed per IRC/IMC and ducts are sealed.

(4) Windows, skylights, and doors are flashed, caulked, and sealed in 

accordance with manufacturer’s recommendations and in accordance 

with Section 703.2.1.

(3) Insulation is installed in accordance with Section 703.1.2 

3. Fireplaces and Fuel Burning Appliances are in accordance with 

901.2.
326 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(d) 2 ACH50 0.1 12 12 0 $ included in performance rating

(e) 1 ACH50 0.05 15

15

5

15

8

7 Points Max

2 2 0 

(2) Energy monitoring device 4

(3) Energy management control system 7

2

5

Base Pts. 11 0 5 0 21 150 7 0 18 432 Ch. 8 Subtotal 

Cost/Point 0 0 7.142857 24

2 20

plans A20.1

3

6

6

8

2 2 0 section 113100

8 8 50 (8) (50)

12 12 100

1 1 0

section 22400

1 Point 

(3 Points Max)

1 0

Showerhead flow rate max. EPA is 2.5.

(3) One of the following piping system designs is implemented:

801.3 A minimum of one food waste disposer is installed at the 

primary kitchen sink. 

801.4 (1&2) 1) The total showerhead flow rate at any point in time, 

for all showerheads in each shower compartment is less than 2.5 

gpm, tested at 80 psi per ASME A112.18.1/CSA B125.1. 2) In 

addition the showerheads must be equipped with an automatic com

(b) On demand hot water recirculation system is installed.

801.2 Energy Star® or equivalent water-conserving appliances are 

installed 

(a) Measured flow at each supply and return register is within 25% of 

design flow.

(1) Dishwasher

(3) Washing machine with a water factor of 6.0 or less

(2) Washing machine

(2) All hot water piping which runs to the plumbing fixtures in both the 

kitchen and bathrooms is 30-feet or less from the water heater and is 

sized in accordance with the code for the specified application.

801.0 Intent. Measures that reduce indoor and outdoor water usage 

are implemented.

801.4 Showerheads

(b) Total airflow is within 10% of design flow.

704.6.2.3 Balanced HVAC air flows are demonstrated by flow hood 

or other acceptable flow measurement tool. Test results in 

accordance with both of the following:

704.6.2.2 The entire central HVAC duct system, including air 

handlers and register boots, is tested for leakage at a pressure 

differential of 0.1 inches w.g. (25 Pa). The maximum leakage as a 

percent of the system design flow rate is in accordance with 

(1) 6% for ductwork entirely outside the building's thermal envelope.

(2) 6% for ductwork entirely inside the building's thermal envelope.

1

(a) Tankless water heater is installed at point of use and is served 

only by cold water or a solar-assisted system.

(4) Pipe runs exceeding 40-feet from the water heater to fixture 

locations are aided by one of the following: 

(a) Use of structured-type plumbing with demand controlled hot water 

loops, in which the volume of water contained in the pipe and fixture 

fittings downstream of the recirculating trunk line is a maximum of 4 

cups (0.25 gallons).

(b) Implement an engineered parallel piping system (i.e. manifold 

system) in which the hot water line distance from the water heater to 

the parallel piping system is less than 15 feet and the parallel piping to 

the fixture fittings contains a maximum of 8

(c) Central core plumbing system with all plumbing fixture fittings (e.g., 

faucets & showerheads) located such that the volume of water 

contained in each pipe run between the water heater and fixture fitting 

is a maximum of 6 cups (0.38 gallons).

801.4 (3&4) All shower compartments in the home comply with 801.4 

(1&2).

(2) The buyer of the home selects a renewable energy service plan 

provided by the utility prior to occupancy of the home.

(1) Builder selects a renewable energy service plan provided by the 

local electrical utility for interim (temporary) electric service. The 

builder’s local administrative office has renewable energy service.

705.1 Energy consumption control. A whole building or whole 

dwelling unit device is installed that controls or monitors energy 

consumption. 

(1) All hot water piping which runs to the plumbing fixtures in both the 

kitchen and bathrooms is 40-feet or less in length from the water 

heater and is sized in accordance with the code for the specified 

application.

801.1. Indoor hot water usage is reduced by one of the following 

practices: 

705 Innovative Practices

801 Indoor and Outdoor Water Use

(1) Programmable communicating thermostat

705.2 Renewable energy service plan is as follows:

CHAPTER 8: WATER EFFICIENCY

(3) 6% for ductwork both inside and outside the building thermal 

envelope.
APPENDIX B 327

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1 Add'l Pt

1 0 -1 0

2 Add'l Pts 2 0

Specify lower flow rate faucet/aerator.

1 

3 Pts Max 1 0 Specify low flow rate faucet/aerator.

2 Add'l Pts

2 0

Mandatory

6 

18 Pts Max 6 100

Install low flow toilet.

4 

Max 4 Points

6 

Add'l Points 6 0

10 Pts. Max

2 20 section328400

4 4

4 4

4

4

6

3 3

2

2

4 4

section 328400

4

15

6 6 382 

2

2 0 Distritution by gravity.

1

4 Points 

(per fixture)

10

24 Points Max

Mandatory

8

8 Add'l Points

2

801.5.1 Water-efficient lavatory faucets with 1.5 gpm or less 

maximum flow rate when tested at 60 psi in accordance with ASME 

A112.18.1 are installed.

(4) All shower compartments installed meet the above conditions and 

are 1.6 to less than 2.0 gpm. 

801.5 Faucets

(2) all lavatory faucets in the home meet the conditions of 801.5.1

(1) a bathroom (Points awarded for each bathroom.)

(3) All shower compartments installed meet the above conditions and 

are 2.0 to less than 2.5 gpm. 

801.9 Water Filters. Water filter is installed to improve water quality 

for the whole building or whole dwelling unit.

802.1 Gray water (as specified in ICC IRC, Appendix O) is separated 

and reused, as permitted by local building code. (Points awarded for 

either Section 802.1(1) or 802.1(2), not both)

(1) Excess Water Flow Shutoff

(2) Leak Detection System

802.3 Automatic shutoff water devices. One of the following 

automatic shutoff water supply devices is installed. Where a fire 

sprinkler system is present, installer is to ensure the device will not 

interfere with the operation of the fire sprinkler system

1) Gold and emerald levels: All water closets and urinals are in 

accordance with either Section 802.2 or Section 801.6. 

(2) Soil moisture sensor based irrigation controller

3) All toilets and urinals are in accordance with Section 802.2 (2). 

(1) Each water closet flushed by reclaimed or recycled water.

(2) Irrigation from reclaimed or recycled water onsite

802.2 Composting or waterless toilets and/or urinals. Composting 

or waterless toilets and/or urinals are in accordance with the following: 

(For water closets, points awarded for either Section 802.2 or 

801.6, but not both) 

(3) No irrigation is installed and a landscape plan is developed in 

accordance with Section 503.5(1) as applicable. (Points must be 

taken in 503.5(1) in order to receive points for 801.7.4(3)

801.8 Rainwater collection and distribution is provided.

2) Composting or waterless toilet and/or urinal is installed. (Points 

awarded per fixture)

(1) Rainwater is collected and used 

(2) Rainwater is distributed using a renewable energy source or 

gravity.

(1) Evapotranspiration (ET) based irrigation controller with a rain 

sensor 

(1) High distribution uniformity (DU) rotating spray heads

(3) Bubblers

(2) Drip irrigation

801.7.3 Irrigation system is zoned separately for turf and bedding 

areas.

(5) Soaker hose

(6) Subsurface irrigation

1) designed by a professional in accordance with EPA WaterSense 

requirements or equivalent

801.7.2 Irrigation system is in accordance with both of the following: 

2) installed in accordance with EPA WaterSense program or 

equivalent 

4) All water closets and all urinals are in accordance with Section 

801.6(2) or Section 801.6(3), as applicable. 

(3) A urinal is installed with a flush volume of 0.5 gallons or less 

when tested in accordance with ASME A112.19.2.

(1) Gold and Emerald Levels: All water closets and urinals are in 

accordance with either Section 801.6 or 802.2.

801.7.4 The irrigation system(s) is controlled by a smart controller: 

(4) Drip emitters

801.7 Irrigation systems 

801.7.1 A low-volume, irrigation system is installed for each 

landscape type utilized: (Points awarded for each type of 

irrigation system installed.)

(2) A water closet is installed with an effective flush volume of 1.28 

gallons or less when tested in accordance with ASME A112.19.2 (all 

water closets) and ASME A112.19.14 (all dual flush water closets), 

and is in accordance with EPA WaterSense Tank-Typ
328 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Base Pts. 104 0 0 0 15 0 4 44 23 147 Ch. 9 Subtotal 

Cost/Point 0 #DIV/0! 0 11 6 

5

boiler

5

5 0 

5

3

5 boiler

2

5

7

4

6

6

6

6

7 7 0 

Mandatory 

2 Points 0 0 

Mandatory 

2 Points 0 0 

4

10 10 0 

10 points 

max.

901.3(1)(b) A continuous air barrier is provided between walls and 

ceilings separating the garage space from the conditioned living 

spaces. 

901.3(1)(c) For one and two-family dwelling unit attached garages, a 

100 cfm or greater ducted, or 70 cfm or greater unducted wall 

exhaust fan is installed and vented to the outdoors, designed and 

installed for continuous operation, or has controls (e.g., motion 

detectors, pressure switches) that activate operation for a minimum 

of 1 hour when either human passage door or roll-up automatic doors 

are operated. For ducted exhaust fans, the fan airflow rating and duct 

sizing are in accordance with Appendix A. (If you claim points for 

901.3(1)(c), you cannot claim points for 901.3(2). 

901.3(2) A carport is installed, the garage is detached from the 

building, or no garage is installed. (If you claim points for 901.3(2), 

you cannot claim points for 901.3(1)(a), 901.3(1)(b), or 901.3(1)(c).

901.4(2-6) Wood Materials. A minimum of 85% of material within a 

product group (i.e. wood structural panels, countertops, composite 

trim/doors, custom woodwork, and/or component closet shelving) is 

manufactured in accordance with the following: 

901.3 Garages are in accordance with the following:

901.3(1)(a) Where installed in the common wall between the attached 

garage and conditioned space, the door is tightly sealed and 

gasketed. 

901.2.1(2)(c) Wood stove and fireplace inserts, as defined in UL 

1482, Section 3.8 are in accordance with the certification 

requirements of UL 1482 and are in accordance with the emission 

requirements of the EPA Certification and the State of Washington W

901.2.1(2)(d) Pellet (biomass) stoves and furnaces are in accordance 

with the requirements of ASTM E1509 or are EPA Certified. 

901.2.1(2)(e) Masonry heaters are in accordance with the definitions 

in ASTM E1602 and ICC IBC, Section 2112.1. 

901.2.2 Fireplaces, woodstoves, pellet stoves, or masonry heaters 

are not installed. 

 (b) Direct vent water heater

901.2.1(2)(b) Factory-built wood burning fireplaces are in accordance 

with the certification requirements of UL 127 and are EPA certified.

901.1.4 The following electric equipment is installed:

1) Heat pump air handler in unconditioned space

2) Heat pump air handler in conditioned space 

901.2.1(1) Natural gas and propane fireplaces that are power vented 

or direct vented, are equipped with permanently fixed glass fronts or 

gasketed doors, and comply with ANSI Z21.88/CSA 2.33a or ANSI 

Z21.50/CSA 2.22 

901.2 Fireplaces and Fuel Burning Appliances (except cooking 

appliances, clothes dryers, water heaters, and furnaces) located in 

conditioned space are code compliant, vented to the outdoors, and 

have adequate combustion and ventilation air provided to minimize 

spillage or back-drafting, in accordance with the following: All of the 

following items are mandatory, if applicable, for certification.

901.2.1(2)(a) Wood burning fireplaces are equipped with gasketed 

doors designed to operate with the doors closed, outside combustion 

air, and a means is provided for sealing the flue to minimize interior air 

(heat) loss when not in operation.

901.1.3 The following combustion space heating and water heating 

equipment is installed within conditioned space. 

(1) Direct vent furnace or boiler

(2) (a) Power vent water heater

901.1.1 Natural draft space heating or water heating equipment is not 

located in conditioned spaces, including conditioned crawl spaces. 

Natural draft equipment is permitted to be installed within the 

conditioned spaces if located in a mechanical room that has an 

outdoor air source, and is otherwise sealed and insulated to separate 

it from the conditioned space(s).

901.1.2 Air handling equipment or return ducts are not located in the 

garage, unless placed in isolated, air-sealed mechanical rooms with 

an outside air source. 

CHAPTER 9: INDOOR ENVIRONMENTAL QUALITY

901 Pollutant Source Control

901.0 Intent. Pollutant sources are controlled. 

901.1 Space and water heating options
APPENDIX B 329

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

0 0 

section 061600-2

2 Points per 

Product Group 2 0 

section 064023-1 - mdf and trim

2 Points per 

Product Group 2 0 

section 123530-2 - cabinets

3 Points per 

Product Group

4 Points per 

Product Group

4 Points per 

Product Group

4 0 section 064023 no added formaldehyde 

2 Add'l Pts

Mandatory 0 0 

plans A20.1

6 6 0 section 096816-1

2 2 0 Specify.

2 2 0 

6

6 Specify hardwood, ceramic, or vinyl are in 

accordance

4

5

8

5

5 0 specify low voc

(4) Particleboard, MDF, or hardwood plywood is in accordance with 

CPA 2.

(6) Non-emitting products. 

a) Construction Adhesives: VOC content not to exceed 7% by weight 

or 75 grams/liter, whichever is greater. 

b) The VOC content of reactive sealants (i.e., silicones, 

polyurethanes, and hybrids, such as MS Polymer and silylated 

polyurethane resin or SPUR) not to exceed 4% by weight or 50 

grams/liter, whichever is greater.

901.9.1 For exterior low-VOC adhesives and sealants, a minimum of 

85% of site-applied products used for the installation of subfloors and 

on the exterior of the project are in accordance with one of the 

folllowing: 

(1) The California Air Resources Board consumer products regulation 

as follows: 

(d) 550 grams/liter clear wood lacquer 

901.8.2 Site-applied interior products are in accordance with the 

emissions levels of CDPH 01350, as certified by a third party program 

such as the Scientific Certification Systems (SCS) Indoor Advantage 

Gold Program or the Greenguard Environmental Institute's Children 

and Schools Certification Program.

901.9 Adhesives and Sealants. 

(b) 100 grams/liter non flat

(c) 350 grams/liter clear wood varnish

(4) VOC limits in accordance with:

(a) 50 grams/liter flat 

(2) CARB Suggested Control Measure for Architectural Coatings 

(3) GS-11

901.8.1 Site-applied interior products are in accordance with one or 

more of the following; not both.

(1) Zero VOC, determined by EPA Method 24 (VOC content below 

the detection limit for the method). 

901.7 Wall coverings. A minimum of 85% of wall coverings are in 

accordance with the emission concentration limits of CDPH 01350 

(using the office scenario), as certified by a third-party program, such 

as the Scientific Certification Systems (SCS) Indoor Advantage Gold 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program. 

901.8 Architectural coatings. A minimum of 85% of the architectural 

coatings are in accordance with one of the following conditions:

(c) Carpet adhesives

901.6 Hard-surface flooring. A minimum of 85% of installed hardsurface flooring is in accordance with the emission concentration limits 

of CDPH 01350 (using the office scenario), as certified by a thirdparty program, such as the RFCI's FloorScore Indoor Air Certification 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program. 

(a) Carpet

(b) Carpet cushion

901.5 Carpets are in accordance with the following:

901.5(1) Wall-to-wall carpeting is not installed adjacent to water 

closets and bathing fixtures .

901.5(2) A minimum of 85% of installed carpet area, carpet cushion 

(padding), and carpet adhesives are in accordance with the emission 

levels of CDPH 01350, as certified by a third-party program, such as 

the Carpet and Rug Institute’s (CRI) Green Label Pl

901.4(1) Structural plywood used for floor, wall, and/or roof sheathing 

is compliant with DOC PS 1 and/or DOC PS 2. OSB used for floor, 

wall, and/or roof sheathing is compliant with DOC PS 2. The panels 

are made with moisture-resistant adhesives. The trademark indicates 

these adhesives as follows: Exposure 1 or Exterior for plywood, and 

Exposure 1 for OSB. 

(2) Particleboard and MDF (medium density fiberboard) is 

manufactured and labeled in accordance with CPA A208.1 and CPA 

A208.2, respectively.

(3) Hardwood plywood is in accordance with HPVA HP-1 and HUD 

Title 24, Part 3280.

Renovation Note: Additional points for Section 901.4 apply to 

renovations that replace all existing countertops, shelving, and other 

nonstructural products.

(5) Composite wood or agrifiber panel products contain no added 

urea-formaldehyde or are in accordance with the CARB Composite 

Wood Air Toxic Contaminant Measure Standard.
330 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

5

5 0 specify low voc

5

2

3

3 0 (3) 0 plans A8.3 and section 123530 part 2.2.C.3.b - 

CARB

5

5 0 Require better specs on cabinets.

4

4 0 Insulation can be respec'd to meet this 

criteria.

1

1 0 Specify.

3

3 0

1

1 44

1

1

Mandatory

0 0 plans A20.1

Mandatory

0 0 plans A7.8, per washington state IAQ Code

8

8 0 plans A20.1

9 Points Max

5

(1) Bathrooms (including powder rooms) are vented to the outdoors. 

The minimum ventilation rate is 50 cfm for intermittent operation or 20 

cfm for continuous operation in bathrooms. 

(2) Clothes dryers are vented to the outdoors. 

(3) Kitchen exhaust units and/or range hoods are ducted to the 

outdoors and have a minimum ventilation rate of 100 cfm for 

intermittent operation or 25 cfm for continuous operation. 

1) for first device

902.1.2 Bathroom and/or laundry exhaust fan is provided with an 

automatic timer and/or humidistat: 

901.14 Non-smoking areas. All interior common areas of a multi-unit 

building are designated as non-smoking areas with posted signage.

902 Pollutant Control

902.0 Intent. Pollutants generated in the building are controlled. 

902.1.1 Spot ventilation is in accordance with the following:

901.12 A carbon monoxide (CO) alarm is installed in a central location 

outside of each separate sleeping area in the immediate vicinity of the 

bedrooms. The CO alarm(s) is located in accordance with NFPA 720 

and is hard-wired with a battery back-up. The alarm device(s) is 

certified by a third party for conformance with either CSA 6.19 or UL 

2034.

901.13 Building entrance pollutants control. Pollutants are controlled 

at all main building entrances by one of the following methods: 

(1) Exterior grilles or mats are installed in a fixed manner and may be 

removable for cleaning. 

(2) Interior grilles or mats are installed in a fixed manner and may be 

removable for cleaning. 

901.11 Insulation is in accordance with the following: 

(1) Formaldehyde emissions of wall, ceiling, and floor insulation 

materials are in accordance with the emissions levels of CDPH 

01350, as certified by a third-party program, such as the 

GREENGUARD Environmental Institute's Children and Schools 

Certification Program or theScientific Certifications Systems (SCS) 

Indoor Advantage Gold Program.

(2) Formaldehyde emissions of duct insulation materials are in 

accordance with the emissions levels of CDPH 01350, as certified by 

a third-party program, such as the GREENGUARD Environmental 

Institute's Children and Schools Certification Program or the Scientific 

Certifications Systems (SCS) Indoor Advantage Gold Program.

(2) Kitchen and bath vanity cabinets in accordance with CARB 

Composite Wood Air Toxic Contaminant Measure Standard are 

installed. 

(3) Kitchen and bath vanity cabinets are installed that contain no 

added urea formaldehyde or are in accordance with 

GGPS.EC.010.R0, ASTM D6670, or equivalent. 

(2) GS-36

901.10 Cabinets. A minimum of 85% of kitchen and bath vanity 

cabinets are in accordance with one of the following: (Where more 

than one of the following practices is used, the practice with the 

fewer number of points is awarded)

(1) Kitchen and bath vanity cabinets in accordance with KCMA ESP 

01, or equivalent, are installed.

901.9.2 Interior Low-VOC Adhesives and Sealants. For interior low 

VOC adhesives and sealants, a minimum of 85% of site-applied 

products used within the interior of the building are in accordance with 

one of the following, as applicable:

1) CDPH 01350, as certified by a third party program, such as 

Scientific Certification Systems (SCS) Indoor Advantage Gold 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program.

c) The VOC content of all other caulks and sealants not to exceed 2% 

by weight or 30 grams/liter, whichever is greater.

(d) The VOC content of contact adhesives not to exceed 55% by 

weight or 480 grams/liter, whichever is greater.

(2) GS-36
APPENDIX B 331

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

8

8 0 section 220000.3.4.E air balance testing

Max. 6 

Points

2

3

6 0 section 233400-2 - verified online

8

10

15

15 0 section 233400-1

17

8

8 0 

3

Mandatory

0 0 zone 3

10

15

10

3

3 0 section 013513-2 

3

5

2

2 0 plans A8.1

2

2 0 specify, and verification is done with blower 

door and costed their also

2

2 0 specify, and verification is done with blower 

door and costed their also

2 2 0 specify, and verification is done with blower 

door and costed their also

902.4 HVAC system protection. One of the following HVAC system 

protection measures is performed: 

(1) HVAC supply registers (boots), return grilles, and rough-ins are 

covered during construction activities to prevent dust and other 

pollutants from entering the system. 

(2) Prior to owner occupancy, HVAC supply registers (boots), return 

grilles, and duct terminations are inspected and vacuumed. In 

addition, the coils are inspected and cleaned and the filter is replaced 

if necessary. 

902.5 Central vacuum systems. Central vacuum system is installed 

and vented to the outside.

(b) An active radon system is installed.

902.3(2) Buildings located in Zone 2. 

(a) A passive radon system is installed. 

(3) Heat-recovery ventilator.

(4) Energy-recovery ventilator.

902.2.2 Ventilation airflow is tested to achieve the design fan airflow 

at point of exhaust in accordance with Appendix B. (Points must be 

claimed in 902.2.1 to claim points in 902.2.2) 

902.2.3 MERV filters 8 or greater are installed on central air systems. 

Designer or installer is to verify that the HVAC equipment is able to 

accommodate the greater pressure drop of MERV 8 filters. 

(1) Exhaust or supply fan(s) ready for continuous operation and with 

appropriately labeled controls.

(2) Balanced exhaust and supply fans with supply intakes located in 

accordance with the manufacturer's guidelines to not introduce 

polluted air back into the building. 

(a) A passive radon system is installed. 

902.3 Radon control. Radon control measures are in accordance 

with ICC IRC Appendix F. (Zones are defined in Figure 9(1). 

902.3(1) Buildings located in Radon Zone 1 have a radon system 

installed.

902.1.3 Kitchen range, bathroom, and laundry exhaust are verified to 

specification. Ventilation airflow at the point of exhaust is tested to a 

minimum of 100 cfm intermittent or 25 cfm continuous for kitchens, 

and 50 cfm intermittent or 20 cfm continuous 

(1) ENERGY STAR, or equivalent, fans (Points awarded per fan) 

(2) ENERGY STAR, or equivalent, fans operating at or below 1 sone 

(Points awarded per fan)

902.2. Building ventilation systems. 

902.2.1 One of the following whole building ventilation systems is 

implemented and is in accordance with the specifications of Appendix 

B. (Points must be claimed in 902.2.1 to claim points in 902.2.2.

2) for each additional device

902.1.4 Exhaust fans are ENERGY STAR as applicable. 

903 Moisture Management: Vapor, Rainwater, Plumbing, HVAC

902.6 Living space contaminants. The living space is sealed to 

prevent unwanted contaminants.

(1) Attic access, knee wall door, or drop down stair is caulked, 

gasketed, or otherwise sealed. 

(2) All penetrations (e.g., top plates, HVAC register boots, recessed 

can lights, are sealed in the following areas:

(b) Wall

(c) Floors

903.0 Intent. Moisture and moisture effects are controlled. 

(a) Attic/ceiling
332 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

0 0 no ceramic installed

Mandatory 0 0 plans A7.1

3

3 75

6

Mandatory

0 0 

10

8

2 Points 

2 0 Put into specs.

Mandatory 

2 Points 2 0

4

4 0 section 061000

2

2 0 section 096816 and 096500

2

2

5 5 0

Mandatory

0 0 section 233100-1

2

8 Points 

Richmond VA is not warm/humid climate

903.4.1(3) The moisture content of lumber is sampled to ensure it 

does not exceed 19 % prior to the surface and/or wall cavity 

enclosure. 

903.3.1(2) Damp-proof walls are provided below finished grade. 

Joints of vapor retarder overlap a minimum of 6 inches and are taped.

903.4.2 Moisture content of subfloor, substrate, or concrete slabs is 

in accordance with the appropriate industry standard for the finish 

flooring to be applied. 

(2) 6-mil polyethylene sheeting, lapped a minimum of 6 inches and 

taped at the seams. 

903.4 Moisture control measures. 

903.4.1(1) Building materials with visible mold are not installed or are 

cleaned or encapsulated prior to concealment and closing.

903.3.2 Crawlspace that is built as a conditioned area is sealed to 

prevent outside air infiltration and provided with conditioned air at a 

rate not less than 0.02 cfm per square foot of horizontal area and one 

of the following is implemented:

(1) A concrete slab over lapped 6 mil polyethylene or polystyrene

903.4.1(2) Walls are not enclosed (e.g. with drywall) if the insulation 

has a high moisture content. Wet insulation products are dry before 

enclosing. 

(2) Central HVAC system equipped with additional controls to operate 

in dehumidification mode.

903.5.2 Cold water pipes in unconditioned spaces are insulated to a 

minimum of R-4 with pipe insulation or other covering that adequately 

prevents condensation.

903.7 Relative Humidity. In climate zones 1A, 2A, 3A, 4A, and 5A as 

defined by Figure 6(1), equipment is installed to maintain relative 

humidity (RH) at or below 60% using one of the following: 

903.9.1 In “Warm-Humid” climates as defined by Figure 6(1) 

equipment is installed to maintain Relative Humidity (RH) at or below 

60% using one of the following:

(1) Additional dehumidification system(s)

903.6(1) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated to a 

minimum of R-6. Outdoor air supplies to ventilation systems are 

insulated to a minimum of R-6.

903.6(2) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated to a 

minimum of R-8. Outdoor air supplies to ventilation systems are 

insulated to a minimum of R-8.

903.2.1 A capillary break and vapor retarder are installed at all 

concrete slabs in accordance to the following:

1) A minimum 4-inch thick bed of 1⁄2 inch diameter or greater clean 

aggregate, covered with polyethylene or polystyrene sheeting in direct 

contact with the concrete slab, with the sheeting joints lapped in 

accordance with Section 903.3. (or)

b. In Dry climate locations, as defined by Figure 6(1), polyethylene 

sheeting is not required unless required for radon resistance (Section 

902.3).

903.2.2 Add a capillary break on footing to prevent moisture migration 

into foundation wall. 

903.3.1(1) Minimum 6-mil vapor retarder installed on the crawl space 

floor and extended up the wall sufficient to allow the material to be 

affixed with glue and furring strips. Joints of vapor retarder overlap a 

minimum of 6 inches and are taped.

903.3 Crawlspaces

903.5 Plumbing. 

903.5.1 Plumbing distribution lines are not installed in exterior wall 

cavities.

a. In areas with free-draining soils, identified as Group 1 in the ICC 

IRC by a certified hydrologist, soil scientist, or engineer through a site 

visit, a gravel bed or geotextile matting is not required.

903.5.3 Plumbing is not installed in unconditioned spaces.

Modification for 1&2:

903.1 Tile backing materials installed under tiled surfaces in wet areas 

are in accordance with ASTM C1178, C1278, C1288, or C1325. 

2) A minimum 4-inch thick uniform layer of sand, overlain with a layer 

or strips of geotextile drainage matting, covered with polyethylene 

sheeting, with the sheeting joints lapped according to Section 903.3.

903.2 Capillary breaks
APPENDIX B 333

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

2 72 Bath fans are already triggered by 

humidistats.

2

Base Pts.

6 0 6 950 0 0 0 0 5 0 Ch. 10 Subtotal 

1 point per 2 

items

Mandatory

Mandatory

Mandatory

Mandatory

1002 Education Training of Building Owners 

on Building Operation And Maintenance for 

One- and Two-Family Dwellings or Multi-Unit 

Buildings

(3) the EPA publications “Reducing Lead Hazards When Remodeling 

Your Home” and “Asbestos in Your Home: A Homeowner’s Guide”

CHAPTER 10: OPERATION, MAINT., AND BUILDING OWNER 

EDUCATION

Building Owners’ Manual for One- and Two-Family Dwellings

(Points awarded for mandatory and non-mandatory items)

(14) List of common hazardous materials often used around the 

building and instructions for proper handling and disposal of these 

materials.

(15) Information about organic pest control, fertilizers, de-icers, and 

cleaning products.

(16) Information about native landscape materials and/or those that 

have low-water requirements.

(17) Information about methods of maintaining the building’s relative 

humidity in the range of 30-60%.

(18) Instructions for inspecting the building for termite infestation.

(19) Instructions for maintaining gutters and downspouts and 

importance of diverting water at least five feet away from foundation.

(13) Maintenance checklist.

(10) Where frost protected shallow foundations are used, notify owner 

of precautions, including instructions not to remove or damage 

insulation when modifying landscaping, to provide heat to the home as 

required by the IRC/IBC, and to keep base materials 

(11) A list of local service providers that offer regularly scheduled 

service and maintenance contracts to assure proper performance of 

equipment and the structure (e.g., HVAC, water heating equipment, 

sealants, caulks, gutter and downspout system, showe

904 Innovative Practices

904.1 A humidity monitoring system is installed with a mobile base 

unit that displays a reading of temperature and relative humidity at the 

base unit with a minimum of two remote units. One remote unit that is 

placed permanently inside the conditioned space in a central location, 

excluding attachment to exterior walls, and another remote unit is 

placed permanently outside of the conditioned space.

904.2 Kitchen exhaust unit(s) that equal or exceeds 400 cfm, and 

make-up air is provided.

Renovations Note: A building owners’ manual that includes the 

following:

(1) all mandatory items listed in Section 1001.1

(1) A green building program certificate or completion document.

(8) Local public transportation options (if applicable).

(9) A diagram showing the location of safety valves and controls for 

major building systems.

(2) List of green building features (can include the national green 

building checklist).

(3) Product manufacturer’s manuals or product data sheet for 

installed major equipment, fixtures and appliances. If product data 

sheet is in the binder, manufacturer’s manual shall may be attached to 

appliance in lieu of inclusion in the binder. 

(4) Information on local recycling programs.

(5) Information about available local utility programs that purchase a 

portion of energy from renewable energy providers. 

(12) A photo record of framing with utilities installed. Photos taken 

prior to installing insulation, clearly labeled, and included as part of the 

homeowner’s binder.

(20) A narrative detailing the importance of maintenance and 

operation in retaining the attributes of a green-built building.

1001.0 Intent. Information on the building’s use, maintenance and 

green components is provided. 

(6) Explanation of the benefits of using energy efficient lighting 

systems (e.g., compact fluorescent light bulbs, light emitting diode 

(LED)) in high usage areas.

(7) A list of practices to conserve water and energy.

1001.1 A homeowner’s binder is provided that includes the following, 

as available and applicable:

(2) a minimum of six of the non-mandatory items listed in Section 

1001.1
334 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

378 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

6

6 0 section 017000-2

(1) HVAC filters.

(2) Thermostat operation and programming.

(3) Lighting controls.

(4) Appliances and settings.

(5) Water heater settings.

(6) Fan controls.

1003 Construction, Operation and 

Maintenance Manuals and Training for MultiUnit Buildings

1

1003.1 Building construction manual. A building construction

manual, including five or more of the following, is compiled and

distributed in accordance with Section 1003.0.

1003.0 Intent. Manuals are provided to the responsible parties 

(owner, management, tenant, and/or maintenance team) regarding 

the construction, operation, and maintenance of the building. Paper or 

digital format manuals are to include information regarding those 

aspects of the building’s construction, maintenance, and operation 

that are within the area of responsibilities of the respective recipient. 

One or more responsible parties are to receive a copy of all 

documentation for archival purposes.

1002.1 Training of building owners. Building owners/occupants are

familiarized with the green building goals and strategies implemented

and the impacts of the occupants’ practices on the costs of operating

the building. Training is provided to the responsible party(ies)

regarding all equipment operation and control systems. Systems

include, but are not limited to, the following:
APPENDIX B 335

APPENDIX B 

GREEN SCORING & COST

4 — Climate Zone #5

A. Akron, Ohio – Townhouse
336 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Building Comparison

Akron, OH - TC Project 14-A-08 - TownHouse - A unit

ANSI-ICC-700-2008 National Green Building StandardTM

Lot 22 x 75' (approx.) 1,750 Silver Gold Emerald

House 18 x 42' 1,371 Required Actual Required Actual Required Actual Required Actual

Garage (att'd) 12.67'x 30' 380.1 5. Lot Design... 39 76 66 88 93 125 119 137 KEY

End unit townhouse with front facing East. 6. Resource Efficiency 45 74 79 92 113 118 146 155 Points are Co-Dependant on at

yard 429 7. Energy Efficiency 30 65 60 87 100 161 120 192 least one other cell

walks & driveway 236 8. Water Efficiency 14 36 26 36 41 54 60 62 Overhead Cost - Dependant on

pervious 24.51% 9. Indoor Env. Quality 36 60 65 101 100 137 140 142 subdivision size

Base rating 11/12/09 10. Operation, Maintenance... 8 9 10 15 11 15 12 15

summit county Additional Points 50 100 100 100

Total 222 320 406 419 558 610 697 703

Points Cost Points Cost Points Cost Points Cost

Chapter 5 76 0 88 520 125 628 137 2,181

Chapter 6 74 365 92 371 118 1,561 155 4,630

Chapter 7 65 647 87 3,293 161 11,724 192 20,445

Chapter 8 36 0 36 0 54 525 62 907

Chapter 9 60 106 101 367 137 1,039 142 1,155

Chapter 10 9 950 15 1,044 15 1,044 15 1,044

Total 320 2,068 419 5,595 610 16,520 703 30,361

1.51 4.08 12.05 22.15

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

Cost/Point 3 43 3 129

Rating 76 260 0 0 12 520 37 108 12 1,553 Ch. 5 Subtotal Base

Because of lead impacted soil mitigation area 

denoted then omitted A001; may have been 

grey/brownfield.

4

5

5

5

http://www.edgewoodakron.com/communityT

ransportation.asp

3

3

3

3 New urbanism - alleys and garages in back 

with porches and sidewalks in front. 

Connection to other phases of project, 

community center, neighborhood.

3

3 Park on site. Community Center and 

continuing education classes on site. Tennis 

courts across Euclid. Grocery shopping, 

schools, and a bar nearby.

4

4 752

Lot Design

C101 - Existing Conditions & Demoliton Plan 

shows all trees being removed from Phase 

IV; subject.

5

6

4

4

4 626

2

3 3 108

C101 and C102 indicate slopes at Raymond 

St. singles. Construction entrance is brought 

in perpendicular to slope. No steep slopes at 

towns on Edgewood.

(a) Less than 25% 2

(b) 25 to 75% 3

(c) Greater than 75% 4

5

Raymond St. SFDs, driveways, paths are 

perpendicular to slopes. No steep slopes on 

Edgewood towns.

ANSI National Green Building StandardTM Baseline Bronze Silver Gold

Bronze

Cost per SF ($)

Cummulative

CH. 5 LOT DESIGN, PREPARATION, AND DEVELOPMENT

500.0 Intent. This section applies to lot development for the 

eventual construction of residential buildings, multi-unit buildings, 

or additions thereto that contain dwelling units. The buildings on 

the lot earn their own performance level by complying with the 

provisions of Sections 303, 304, or 305.5, as applicable.

501.1 The lot is selected to minimize environmental impact by one 

or more of the following:

(1) An infill lot is selected.

(2) A greyfield lot or an EPA-recognized brownfield lot is selected.

501.2 Mass Transportation. A range of mass transportation 

choices are promoted by one or more of the following:

(1) A lot is selected within one-half mile of pedestrian access to a 

mass transit system or within five miles of a mass transit station 

with provisions for parking.

(2) Walkways, street crossings, and entrances designed to 

promote pedestrian activity are provided. New buildings are 

connected to existing sidewalks and areas of development.

(3) Addition and Renovation Note: A renovation or addition project 

is implemented. (Points awarded for using an existing 

building and infrastructure.)

(3) A lot is selected within one-half mile of six or more community 

resources (e.g., recreational facilities (such as pools, tennis 

courts, basketball courts), parks, grocery store, post office, place 

of worship, community center, daycare center, bank, school, 

restaurant, medical/dental office, laundromat/dry cleaner.) 

502.1 A knowledgeable team is established and team member 

roles are identified with respect to green lot design, preparation, 

and development. The project’s green goals and objectives are 

written into a mission statement. 

503.0 Intent. The lot is designed to avoid detrimental 

environmental impacts first, minimize any unavoidable impacts, 

and mitigate for those impacts that do occur. The project is 

designed to minimize environmental impacts and to protect, 

restore, and enhance the natural features and environmental 

quality of the lot. (To be awarded points allocated for design, 

the intent of the design shall be implemented.) 

503.1 Natural resources are conserved by one or more of the 

following:

502 Project Team, Mission Statement, and Goals

(6) Ongoing maintenance of vegetation during construction is in 

accordance with TCIA A300.

(1) A natural resources inventory is completed under the 

direction of a qualified professional. 

(2) A plan is implemented to conserve the elements identified by 

the resource inventory as high priority resources. 

(3) Items listed for protection in the resource inventory plan are 

protected under the direction of a qualified professional. 

(4) Basic training in tree or other natural resource protection is 

provided for onsite supervisor.

(5) All tree pruning on site is conducted by a Certified Arborist.

503.2 Slope disturbance is minimized by one or more of the 

following: (Points awarded only if there are developable 

steep slopes on the lot.)

(1) All or a percentage of development on steep slopes is 

avoided.

(3) All or a percentage of roads and parking are aligned with 

natural topography to reduce cut and fill.

(2) Hydrological/soil stability study for steep slopes is completed 

and used to guide the design of all buildings on the site.

Emerald
APPENDIX B 337

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

6

4

2 Additional 

Points

5 5

5

5 C503 shows sewer & water separate with 

front access. Storm along side. No electric. 

5

5 No limits are denoted on C403 - grading plan.

6

6 0 Plan appears to be largely in place. Allowed 

4 hours professional time.

6

6 520 C404. SWPP notes and details. Final grade, 

C403, moves water around densely-built 

area. 

Alley is impervious. Doesn't count toward lot 

line.

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

(4) A minimum of 75% of the roof is 

vegetated (green roof) 3

5

5 260 C403. Nice landscape plan for green space. 

L201-2 covers individual. Search did not 

indicate these to be native. Allowed 2 prof. 

hrs. to make plan indigenous.

4

4 0 Because of density on lot there is less than 

10% of impervious area.

(a) Lot is 0% turf 4

(b) Greater than 0% to less than 25% 3

(c) 25% to less than 50% 2

(d) 50% to 75% 1 1 L203 indicates about 1/3 of the yard is 

5

5 0

5

5

4

4 0

3

3 0 38 trees were removed from Phase IV. 

Could have been mulched and reused, but 

02230-4 says "dispose of off-site".

4

4 0

2 Additional 

Points

4

4 175

(1) Maintain wildlife habitat.

1 Addt'l Point

(2) Expand wildlife habitat.

2 Addt'l Points

6

3

3

Density based on Phase IV is 48 units on 

6.14 acres = 7.8/acre (C101-102&A001)

4 4

7

10

504 Lot Construction

No cost was included here because the 

landscape is extensive. Challenge is to 

incorporate native species. Professional time 

allowed under the plan.

(3) All or a percentage of impervious surfaces are minimized and 

permeable materials are used for driveways, parking areas, 

walkways, and patios.

(a) tunneling instead of trenching

(b) use of smaller (low ground pressure) equipment or geomats to 

spread the weight of construction equipment

(1) Natural water and drainage features are preserved and used.

(2) A storm water management plan is developed and 

implemented that minimizes concentrated flows and simulates 

flows found in natural hydrology, e.g., vegetative swales, French 

drains, wetlands, drywells, and rain gardens.

(3) Limits of clearing and grading are demarcated on the plan.

503.4 Storm Water Mgmt. Storm water is managed using one 

or more of the following low impact development techniques:

(d) placement of utilities under paved surfaces instead of yards.

(c) shared utility trenches or easements

(1) Construction activities are scheduled to minimize length of 

time that soils are exposed.

(2) Utilities are installed using one or more alternative means:

(4) Long-term erosion effects are reduced through the design 

and implementation of terracing, retaining walls, landscaping, and 

restabilization techniques.

(5) Underground parking uses the natural slope for parking 

entrances.

Addition and Renovation Note: Section 503.2 applies to additions 

that increase building footprint on the lot; and to renovations that 

include landscape, hardscape, and outdoor living area. 

(Additional points awarded for each strategy implemented.)

503.3 Soil disturbance and erosion are minimized by one or 

more of the following: (Also see Section 504.3) (Points must be 

taken here to claim points in 504.1)

503.5 Landscape plan is developed to limit water and energy 

use while preserving or enhancing the natural environment. 

(1) A plan is formulated to restore or enhance natural vegetation 

that is cleared during construction. Landscaping is phased to 

coincide with achievement of final grades to ensure denuded 

areas are quickly vegetated.

(2) Turf grass species, other vegetation, and trees are selected 

that are native or regionally appropriate for local growing 

conditions.

(3) 21 or greater dwelling units per acre

Addition and Renovation Note: Section 503.5 applies to additions 

that address protection and renovation of existing vegetation 

during and after construction and the preservation or 

enhancement of the natural environment. 

(3) A percentage or all turf areas are limited. 

(7) Onsite tree trimmings or stump grinding of regionally 

appropriate trees are used to provide protective mulch during 

construction and cleared trees are recycled as saw lumber or 

pulp wood.

503.6 Wildlife habitat. Measures are planned that will support 

wildlife habitat.

503.7 Mixed use development is incorporated.

(1) Environmentally Sensitive Areas are avoided.

(4) Plants with similar watering needs are grouped (hydrozoning).

(5) Species and locations for tree planting are identified that will 

provide summer shading of streets, parking areas, and buildings 

to moderate temperatures. 

(6) Vegetative wind breaks or channels are designed as 

appropriate for local conditions.

(1) 7 to less than 14 dwelling units per acre (4047 m2

)

Addition and Renovation Note: Section 503.6 applies to additions 

that increase building footprint on the lot; and to renovations that 

include landscape, hardscape, and outdoor living area. The 

existing landscape is either maintained to preserve a wildli

503.8 Environmentally Sensitive Areas.

(2) Compromised Environmentally Sensitive Areas are mitigated 

or restored.

(8) An integrated pest management plan to minimize chemical 

use in pesticides and fertilizers is developed.

503.9 Density. The average density on a net developable area 

basis is: 

(2) 14 to less than 21 dwelling units per acre
338 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

4

3

3

4

4 0 Include when formal plan is drawn.

4

02230-3. "Protect existing... and restore 

damaged improvements to their original 

condition." 02230-3 "Repair/replace trees and 

vegetation...damaged."

5 5

5

5 0 02230-2. "Locate and clearly flag trees to 

remain from damage during construction." 

However, no trees remained on the site.

5

5 02230-2. "No clearing until erosion & 

sedimentation control in place."

5

5 02230-4 "Stockpile topsoil... cover."

3

3

3 02370-2 "owner has authority to limit erodible 

surface area...""slopes that erode easily or 

will not be graded for 14 days [to be] 

temporarily seeded.."

3

3 02230-4 "stockpile surplus topsoil to allow for 

respreading..." and PM 02920-3 amend soil 

for 6% organic content per ASTM D5268".

5 0

505 INNOVATIVE PRACTICES

4

Driveway length and sidewalk length is 

minimized.

4

Sidewalks and driveways are concrete. Alley 

is pervious pavers- brick colored.

4 Concrete meets index - driveway and walks.

Base Pts.

66 0 8 365 18 6 26 1,190 37 3,069 Ch. 6 Subtotal 

Cost/Point

15

12 12 1,371

9

6

Mandatory

1 Addt'l Point

3 Addt'l Point

(6) Disturbed areas that are complete or to be left unworked for 

greater than 21 days are stabilized within 14 days using methods 

as recommended by the EPA or in the approved storm water 

pollution prevention plan (SWPPP), where required.

(7) Soil is improved with organic amendments and mulch.

504.2 Trees and vegetation. Designated trees and vegetation 

are preserved by one or more of the following:

(1) Fencing or equivalent to protect trees and other vegetation is 

installed.

(4) Topsoil is stockpiled and stabilized for later use to establish 

landscape plantings.

(5) Soil compaction from construction equipment is reduced by 

distributing the weight of the equipment over a larger area (laying 

lightweight geogrids, mulch, chipped wood, plywood, OSB, metal 

plates, or other materials capable of weight distribution in the 

pathway of the equipment).

(2) Trenching, significant changes in grade, and compaction of 

soil and critical root zones in “tree save” areas are avoided.

(3) Sediment and erosion controls are installed and maintained in 

accordance with the storm water pollution prevention plan 

(SWPPP), where required.

(3) Damage to designated existing trees and vegetation is 

mitigated during construction through pruning, root pruning, 

fertilizing, and watering.

504.3 Soil disturbance and erosion. Onsite soil disturbance 

and erosion are minimized by one or more of the following: (also 

see section 503.3)

(1) Limits of clearing and grading are staked out.

(2) “No disturbance” zones are created using fencing or flagging 

to protect vegetation and sensitive areas from construction 

activity. 

504.0 Intent. Environmental impact during construction is 

avoided to the extent possible; impacts that do occur are 

minimized, and any significant impacts are mitigated.

504.1 Onsite supervision and coordination is provided during 

clearing, grading, trenching, paving, and installation of utilities to 

ensure that specified green development practices are 

implemented (Also see Section 503.3.)

(8) Utilities are installed using one or more alternative means 

such as: 

5

tunneling instead of trenching, use of smaller equipment, use of 

low ground pressure equipment, use of geomats, shared utility 

trenches or easements. 

(5) Greater than 4,000 square feet (373 m2

)

Multi-Unit Building Note: For a multi-unit building, use a 

weighted average of the individual unit sizes in qualifying for 

available points. 

For every 100 square feet over 4,000 sf, one point is to be 

added to Table 303, category 7 for each performance level. 

Addition Note: Additions more than 75% of existing building. 

Section 601.1 does not apply to additions with an area of more 

than 75% of the area of the existing building or dwelling unit. 

505.0 Intent. Innovative lot design, preparation and development 

practices are used to enhance environmental performance. 

Waivers or variances from local development regulations are 

obtained and innovative zoning practices are used to implement 

such pract

505.1 Driveways or parking areas are shared. Waivers or 

variances from local development regulations are obtained to 

implement such practices as applicable. In a multi-unit project, 

parking capacity is not to exceed the local minimum requirements.

505.2 Heat Island Mitigation. Any combination of the following 

strategies are provided for a minimum of 50% of the horizontal 

surface area of the hardscape:

(1) Shading of hardscaping: Shade from existing or new 

vegetation is provided (within five years) or from trellises. Shade 

of hardscaping is to be measured on the summer solstice at 

noon.

(2) Light colored hardscaping: Horizontal hardscaping materials 

are installed with a solar reflectance index of 29 or greater. 

601.1 Conditioned floor area, as defined by ICC IRC calculated 

in accordance with ANSI Z765, is limited. Dwelling unit size is to 

601 Quality of Construction Materials and Waste

601.0 Intent. Design and construction practices that minimize 

the environmental impact of the building materials are 

incorporated; environmentally efficient building systems and 

materials are incorporated; and waste generated during 

construction is reduc

(1) Less than or equal to 1,000 square feet

(2) Less than or equal to 1,500 square feet

(3) Less than or equal to 2,000 square feet

(4) Less than or equal to 2,500 square feet

Additions less than or equal to 75% of existing building. 

Where the addition area is less than or equal to 75 percent of the 

existing buidling or dwelling unit area, points are awarded as 

follows:

(1) The existing structure is 50% to 75% of total building or 

dwelling unit area.

(2) The existing structure is 76% to 99% of total building or 

dwelling unit area.

CHAPTER 6: RESOURCE EFFICIENCY
APPENDIX B 339

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

6 Add'l Points

1 Addt'l Point

3 pts per 

system (9 pts 

max)

3 0 6 0

roof truss @ base level. Incorporate: single 

top plate, stud wall spacing @ 24". Design 

cost vs material cost should be equal

3 3 0

3 3 1,040

Allowed 2 days of prof. time to fine tune 

architecturals.

3 3 0

3 3 0

1

4

4 1,040

Included in architectural revision.

(1) Floor system. 

4

4 2nd floor is open web trusses,12" deep, at 

16" oc. A501& S101

(2) Wall system. 

4 A501 assume 10-1 1/8" walls aren't precuts.

(3) Roof system. 4 4 A501 trusses at 24" oc.

13

13

Max 8 

points

(1)first stacked story 4 4

(2) for each additional story 2

Max 12 

points

5

5

0

Use architectural redesign to included 

specification for siding that meets this 

requirement.

2

PM 07460-2 CVPVC trim is pre-finished. 

Porch soffits prefinished aluminum. (A006 

5 PM 8565-2 Windows and decorative louvre 

are vinyl. 08250-2 Doors are fiberglass. No 

2 A502. Walls are brick first level and fiber 

cement 2nd. 50% brick - prefinished. 

3

3 1,040 Included 8 hours of engineer's time to design 

FPSF. Should net a savings in concrete 

which isn't factored here.

4

(1) Adobe

(2) Concrete/Masonry

(3) Logs 

(4) Rammed earth

Maximum 

number of 

points 5 

(1) Installing a porch roof or awning.

(2) Extending the roof overhang.

(3) Recessing the exterior door.

Main entrance door 3 3

Additional covered door assembly 1 2

4

Inches Rainfall*

Eave Overhang 

(Inches)

Rake Overhang 

(Inches)

36.2" average annual. 16" overhangs.

Less than 20 12 12

21 to 40 12 12 4

41 to 70 18 12

More than 70 24 12

0

1

(a) The total area of the existing building or dwelling unit is 

greater than 2500 sf.

(5) manufactured home construction for the entire building located 

above grade.

601.3 Building dimensions and layouts are designed to reduce 

material cuts and waste.

(1) When used for at least 80% of floor area

(3) When used for at least 80% of roof area 

(2) When used for at least 80% of wall area

(4) When used for at least 80% of cladding or siding area

(5) When used for at least 80% of penetrations or trim area

601.4 Detailed framing or structural plans, material quantity lists 

and onsite cut lists for framing, structural materials, and 

sheathing materials are provided.

601.2 Material Usage. Building-code-compliant structural 

systems or advanced framing techniques that optimize material 

usage are implemented. Points awarded for each system or 

framing technique implemented.

(c) Window, skylight, and door assemblies not requiring paint or 

stain on exterior and/or interior surfaces.

601.5 Pre-cut or pre-assembled components, or panelized or 

precast assemblies are utilized for 90% for the following system 

or building.

Renovation Note: When renovations increase the total existing 

building or dwelling unit area by 1 percent or less, points are 

awarded as follows:

(a) The total area of the existing building or dwelling unit is less 

than or equal to 2500 sf.

(d) Wall coverings or systems not requiring paint or stain or other 

type of finishing application.

601.7 Site applied finishing materials. Building materials or 

assemblies that do not require additional site applied material for 

finishing are utilized. 

(a) Pigmented, stamped, decorative, or final finish concrete or 

masonry.

(1) 90% or more of the installed material or assembly listed below:

(2) 50% to less than 90% of the installed building material or 

assembly listed below:

(b) Trim not requiring paint or stain.

601.8 Foundations such as frost-protected shallow foundations, 

pier and pad foundations, post foundations and other similar 

foundation types are designed and constructed.

601.9 One or more of the following above grade wall systems 

that provide sufficient structural and thermal characteristics are 

used for at least 75% of the gross exterior wall area of the 

building: 

602.2 Roof overhangs, based on inches of rainfall in Table 602.2, 

are provided over at least 90% of exterior walls to protect the 

building envelope.

602.0 Intent. Design and construction practices are implemented 

that enhance the durability of materials and reduce in-service 

maintenance.

602.1 Entries at exterior door assemblies, inclusive of side lights, 

are covered by one of the following methods below to protect the 

building from the effects of precipitation and solar radiation. A 

projection factor of at least 0.375 is provided. Eastern and 

western facing entries in Climate Zones 1, 2, and 3, as 

determined in accordance with Figure 6(1), shall have a projection 

factor of at least 1.0 unless otherwise protected from direct solar 

radiation by other means (e.g. screen wall, vegetation).

602 Enhanced Durability and Reduced Maintenance

Addition Note: Section 602.2 applies to the new construction 

portion of additions. 

Renovation Note: Section 602.2 applies to renovations that alter 

the existing roof.

Table 602.2

Minimum Roof Overhang for One- & Two-Story Buildings

602.3 Foundation Drainage

601.6 Stories above grade are stacked, such as in 1 1/2 and 2 

story or greater structures. The area of the upper story shall be 

at least 50% of the area of the story below, based on areas with a 

minimum ceiling height of 7 feet. 

(4) modular construction for the entire building located above 

grade.

Side door, North, has PF of .447 and 

protected from solar by adjacent building
340 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

0 Met. No habitable below grade spaces.

4

4 365 A501. Interior sub-slab drain not indicated. 

0

2 Additional 

Points

3 3 A501 details drip edge. Not in roofing specs. 

07311-3. 

4

4 0 07600-3. 07600-2 implies that downspout 

drainage boots will serve as transition to 

storm drain tie-in. 

1 Add'l Point

Mandatory

0 Not met. Specifications should be 

ammended to include this. Site plan should 

be provided.

Mandatory 0 

Add'l Points

2 Add'l Points 

4

Moderate to heavy zone.

 0 Add'l Points

1 Add'l Point 

3 Add'l Points

2

4

6

Mandatory

0 Met. A502

Mandatory 0 

Add'l Points

Mandatory 0 

Add'l Points

Mandatory

0 Met. PM 07311-3 "Apply waterproofing 

underlayment at eaves...at least 36" inside 

exterior wall line."

4 PM -7190 calls for masonry sealer - 

(1) Rubberized coating, or

(2) Drainage mat.

0 Additional 

Points

2 Additional 

Points

6

6

0

At plan revision include all flashing details. 

(2) Roof valleys.

3

Shingle color not stated.

(2) A green (landscaped) roof system.

1 Add'l Point 

3

3 75 

(2) Compost facility provided on-site. 3 3 75 

602.3.2 Interior and exterior foundation perimeter drains are 

installed and sloped to discharge to daylight, dry well, or sump pit.

602.4 Drip edge is installed at eaves and gable roof edges.

602.5 A gutter and downspout system with extensions, or splash 

blocks and effective grading, are provided to carry water at least 5 

feet away from perimeter foundation walls. 

602.3.1 Where required by the IRC/IBC for habitable and usable 

spaces below grade, exterior drain tile is installed.

Renovation Note: Section 602.5 applies only to renovations.

Addition Note: Section 602.3.2 applies to the new construction 

portion of additions. 

Renovation Note: Section 602.3.2 applies to renovations that 

involve the demolition/reconfiguration of exterior walls and/or 

modification of the existing foundation drainage system. 

602.6 Finish grade at all sides of building is sloped to provide a 

minimum of 6 inches of fall within 10 feet of the edge of the 

building. Where lot lines, walls, slopes or other physical barriers 

prohibit 6 inches of fall within 10 feet, the final grade 

Addition Note: Section 602.6 applies only to additions that 

increase the footprint of the building.

Renovation Note: The additional points for Section 602.6 apply 

only to renovations.

Addition Note: Section 602.7 applies only to the new construction 

portion of additions.

Renovation Note: The additional points for section 602.7 applies 

only to renovations that alter the existing roof.

602.7 Termite barrier. Continuous, physical,foundation termite 

barrier used with or without low toxicity treatment is installed in 

geographical areas that have subterranean termite infestation 

potential determined in accordance with Figure 6(3).

602.8 Termite-resistant materials are used as follows: 

(1) In areas of slight to moderate termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, 

floors, concealed roof spaces not accessible for inspection, 

exterior decks, and exterior claddings within the first 2 feet above 

the top of the foundation. 

(1) new non-chemical termite barrier is provided

(2) existing chemical barrier is removed and replaced with a nonchemical barrier

602.12 Flashing details are shown on plans and flashing is 

installed at all of the following locations, as applicable:

(1) Around exterior fenestrations, skylights and doors.

(3) Deck/balcony to building intersections.

(2) In areas of moderate to heavy termite infestation probability 

(as defined by Figure 6(3)) for the foundation, all structural walls, 

floors, concealed roof spaces not acessible for inspection, exterior 

decks, and exterior claddings within the first 3 feet above the top 

of the foundation. 

(3) In areas of very heavy termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, 

floors, concealed roof spaces not accessible for inspection, 

exterior decks, and exterior claddings.

602.9 Where required by the IRC/IBC, a water-resistive barrier 

and/or drainage plane system is installed behind exterior veneer 

and/or siding. 

Addition Note: Section 602.9 applies to the new construction 

portion of additions.

Renovation Note: Section 602.9 applies to renovations that 

include exterior veneer and/or siding replacement.

Addition Note: Section 602.11 applies to the new construction 

portion of additions.

Renovation Note: Section 602.11 applies to renovations that 

involve the demolition/reconfiguration of exterior walls, 

modification of the foundation wall, or an effort to improve 

foundation waterproofing.

602.13 Roof Surfaces. A minimum of 90% of roof surfaces are 

constructed of one or both of the following:

(1) Products which meet the requirements of the ENERGY 

STAR® cool roof certification or equivalent.

(4) At roof-to-wall intersection and at roof-to-chimney 

intersections.

(5) A drip cap is provided above windows and doors that are not 

Flashed or protected by covering per Section 602.1.

602.14 Recycling. Occupant recycling is facilitated by one or 

more of the following methods:

Renovation Note: Section 602.13 applies to renovations that 

include roof replacement.

(1) A built-in collection space in each kitchen and an 

aggregation/pick-up space in a garage, covered outdoor space or 

other area for recycling containers.

603 Reused or Salvaged Materials 

602.10 In areas where there has been a history of ice forming 

along the eaves causing a backup of water, an ice barrier is 

installed at roof eaves and is extended at least 24” inside the 

exterior wall line of the building, in accordance with the IRC/IBC.

602.11 Enhanced foundation waterproofing is installed:
APPENDIX B 341

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

 1 

(Max 12 points)

3

4

4 6 Based on min. of 33 units.

Points per Table 

604.1

Material Percentage Recycled Content Per 2 Minor Per 2 Major

25% - 50% 1 2 2 carpet padding and wood/plastic 

50% - 75% 2 4 6 gypsum board and cellulose insulation. Note: 

specify correct gypsum board

75% 3 6 Mirror and s.s sink

This is important in view of possible 

contaminated soil.

6

6 989

Mandatory 2 

Additional 

Points

7

7 0 Cost varies with location.

Mandatory 0 

Add'l Points

Max 6

3 3 0 Recycle drywall and copper wire. Net savings 

1 2 0 Recycle cardboard and wood

Max 8

3

(b) engineered wood 3 OSB & Kitchen cabinets.

(c) bamboo

(d) cotton

(e) cork

(f) straw

6

5 Interior trim package, tji floor joists, osb roof 

and walls, plywood floors

1 

(2 pts max)

(a) AFF American Tree Farm System®

(2) for each additional recycled material.

606.1(1) At least two types of biobased materials are used, each 

for more than .5% of the project’s projected building material 

cost. Combined 8 pts Max

606.1(2) At least two types of biobased materials are used, each 

for more than 1% of the project’s projected building material cost. 

606.2 Wood-based products are certified to the requirements of 

one of the following recognized product programs: 

(b) Canadian Standards Association’s Sustainable Forest 

Management System Standards (CAN/CSA Z809)

3

(c) Forest Stewardship Council (FSC)

(i) other biobased materials with a minimum of 50 percent 

biobased content (by weight or volume).

(d) Program for Endorsement of Forest Certification Systems 

(PEFC)

(e) Sustainable Forestry Initiative Program (SFI)

(6) Other product programs mutually recognized by PEFC

603.1 Existing buildings and structures are reused, modified or 

deconstructed in lieu of demolition. (One point awarded for 

every 200 sq. ft., 18.5m2, of floor area.)

603.2 Reclaimed and/or salvaged materials and components are 

used.Total material and labor cost of salvaged materials shall 

equal or exceed 1% of total construction costs.

603.0 Intent. Practices that reuse or modify existing structures, 

salvage materials for other uses, or use salvaged materials in 

building’s construction are implemented. 

604.1 Building materials with recycled content are used for at 

least two minor and/or two major components of the 

building.(NOTE: Does not specify PConsumer. Implication is that 

max. allowable is 4 materials. 9 points is max. in scoring tool.)

Table 604.1

603.3 Scrap Materials. Facilitation for sorting and reuse of scrap 

building material (e.g. provide a central storage area or dedicated 

bins.)

604 Recycled-Content Building Materials

606.0 Intent. Building materials derived from renewable 

resources are used.

606.1 The following biobased products are used. (Note: 606.1 

and 606.2 denote % of project mat'l cost req'd.)

(a) certified solid wood in accordance with Section 606.2

Recycled Construction Waste 

605.0 Intent. Waste generated during construction is recycled. 

Note: All waste classified as hazardous shall be properly handled 

and disposed. (Points not awarded for hazardous waste 

removal.) 

605.1 A Construction Waste Management Plan is developed, 

implemented, and posted at the jobsite with a goal of recycling or 

salvaging a minimum of 50% (by weight) of construction and landclearing waste.

(b) Other methods approved by the NAHB Research Center (the 

Adopting Entity).

605.3 Recycled Construction materials: Construction materials 

(e.g., wood, cardboard, metals, drywall, plastic, asphalt roofing 

shingles, or concrete) are recycled offsite.

(1) A minimum of two types of materials are recycled.

Recycled Content

(g) natural fiber products made from crops (soy or corn-based)

(h) products with the minimum biobased contents of the USDA 7 

CFR Part 2902 (Approx. 7%)

606.1(3) For each additional biobased material used for more than 

.5% of the project’s projected building material cost. 

Addition and Renovation Note: The construction waste 

managment plan includes information on the proper handling and 

disposal of hazardous wastes.

Addition and Renovation Note: All waste classified as 

hazardous waste is properly handled and disposed of. The 

weight of this material is exempted from landfill diversion when 

Section 605.2 is applied to existing buildings.

606 Renewable Materials

(a) Materials are ground or otherwise safely applied onsite as soil 

amendment or fill. At least 50% (by weight) of construction and 

land-clearing waste shall be diverted from landfill.

605.2 Onsite recycling measures following applicable regulations 

and codes are implemented, such as the following:

606.2(1) Where a minimum of two certified wood-based products 

are used for minor elements of the building, such as all trim, 

cabinetry, or millwork.
342 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

6 pts. max.

2 0 Specify that OSB comes from a mill that 

complies

Max 9 points

LVL headers and floor girder.

(3) Roof or floor trusses. 9 Roof and floor trusses.

10 points max.

2 2 0 stone for driveway base

2

8 0 osb, steel, siding and deck lumber locally 

sourced

Max 15 points

(1) Per product/system comparison 3

(2) Whole building LCA analysis 15

Max 10 points

Base Pts. 53 0 12 647 22 2,646 74 8,430 31 8,721 Ch. 7 Subtotal 

Use 703 path.

Only 10% better in the cost approach

Mandatory Practices

Mandatory

0 520 4 hrs. prof time assumed.

701.4.1 HVAC SYSTEMS

Mandatory

0 0 

Mandatory 

0 Add'l Points

 2 Add'l 

Points

Mandatory

0 

701.4.2 DUCT SYSTEM

Mandatory

0 

Mandatory 

0 Add'l Points

 0 Add'l Points

(1) one type of material.

(2) For each additional material.

608.1 Indigenous materials are used for major elements of the 

building. 

(2) For the Green Remodel Path (Section 305.5), the existing 

building or dwelling unit shall comply with Table 305.5)

(1) For the Green Building Path (Section 305.4), the existing 

building or dwelling unit shall comply with the mandatory 

renovation/addition practices and shall achieve the points 

indicated in Table 303.

701.1.1 Minimum Performance Path Requirements. A building complying with 

Section 702 shall exceed the baseline minimum performance required by the IECC 

by 15%, and shall include a minimum of two practices from Section 704.

Renovation Note: Section 701 applies to existing buildings as 

follows:

609.1 A more environmentally preferable product or assembly for 

an application based upon the use of a Life Cycle Assessment 

(LCA) tool compliant with ISO 14044 or other recognized 

standards that compare the environmental impact of building 

materials, as

610 Innovative Practices

610.1 Manufacturer's environmental managment system

concepts. Product manufacturer’s operations and business 

practices include environmental management system concepts 

and the production facility is ISO 14001 certified or equivalent. 

The aggregate value of building products from ISO 14001 certified 

or equivalent production facilities is at least 1% or more of the 

estimated total building materials cost. (1 point awarded for 

every percent.) 

701.1 Mandatory requirements. The building shall comply with either Section 702 

(Performance Path) or Section 703 (Prescriptive Path). Items listed as 

“Mandatory” in Section 701.4 apply to both the Performance and Prescriptive 

Paths.

609 Life Cycle Analysis

701.1.2 Minimum Prescriptive Path Requirements. A building complying with 

section 703 shall obtain a minimum of 30 points from Section 703, and shall include 

a minimum of two practices from Section 704. 

CHAPTER 7: ENERGY EFFICIENCY

701.1.3 Alternative Bronze Level Compliance. As an alternative, any building 

that qualifies as an ENERGY STAR qualified home or equivalent achieves the 

Bronze Level for Chapter 7.

701.4.2.1 Ducts are sealed with tape complying with UL 181, 

mastic, gaskets, or an approved system as required by the ICC 

IRC (Section M1601.3.1, or ICC IMC Section 603.9) to reduce 

leakage.

701.2 Emerald Level Points. The Performance Path shall be used to achieve to 

the Emerald Level.

701.4.1.1 Space heating and cooling system/equipment shall be 

sized according to heating and cooling loads calculated using 

ACCA Manual J or equivalent. 

701.4.1.2 Where installed, as a primary heat source in the 

building, radiant or hydronic space heating system is designed 

using industry-approved guidelines (e.g. ACCA Manual J, GAMA 

H-22, or an accredited design professional's and manufacturer's 

recommen

Addition and Renovation Note: Section 701.4.1.1 is mandatory 

for both additions and renovations where new HVAC equipment is 

installed.

Addition and Renovation Note: The additional points for 

section 701.4.1.1 apply to additions or renovations that include 

one or both of the following: 

(1) a change in heating and cooling loads

(2) a replacement and/or addition of mechanical equipment

(1) Lighter, thinner brick with bed depth less than 3 inches, brick 

with coring above 25%, or both.

607 Resource-Efficient Materials

607.1 Products containing fewer materials are used to achieve 

the same end-use requirements as conventional products, 

including but not limited to: (3 points awarded for each 

material.)

606.3 Manufacturing Energy. Materials are used for major 

components of the building that are manufactured using a 

minimum of 33% of the primary manufacturing process energy 

derived from renewable sources, combustible waste sources, or 

renewable energy credits (RECs). (2 points awarded per 

material.)

608 Indigenous Materials

(2) Engineered wood or engineered steel products.

606.2(2) Where a minimum of two certified wood-based products 

are used in major elements of the building, such as walls, floors, 

or roof.

Addition Note: Section 701, including mandatory items, applies 

only to the new construction portion of additions.

701.3 A review by the Adopting Entity or designated third party 

shall be conducted to verify design and compliance with Chapter 

7. 

Addition and Renovation Note: Section 701.4.2.1 applies only 

to the new portions of a duct system, except as follows:

(1) For renovations of existing buildings, the entire duct system, 

both existing and new, is permitted to be sealed with mastic or an 

aerosol spray-applied duct sealant.
APPENDIX B 343

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(a) 25% to less than 50% 1 Add'l Pt 

(b) 50% to less than 75% 2 Add'l Pt 

(c) 75% to less than 100% 3 Add'l Pt 

(d) 100% 4 Add'l Pt 

5 Add'l Pt 

Mandatory 0 Complies. Ducts in slab on 1st floor.

Mandatory 

0 Add'l Pts

1 Add'l Pt 

2 Add'l Pt 

Mandatory

0 PM 15250-2. Complies

Mandatory

0 Doesn't comply. 

Mandatory 

Doesn't comply. May be one recessed fixture 

in 2nd floor bath. No spec.

 1 Add'l Pt

Mandatory

0 A501 no baffle shown.

(2) Recessed Lighting. Recessed light fixtures that penetrate 

the thermal envelope are airtight, IC rated, and sealed with 

gasket, caulk, or foam.

Renovation Note: Replace existing recessed lights that 

penetrate the thermal envelope with airtight, IC-rated recessed 

light fixtures that are sealed to drywall with gasket, caulk, or foam. 

(Additional point per fixture)

(3) Eave vents. Where ceiling/attic assemblies or designs have 

eave vents, baffles, or other means shall be utilized to minimize 

air movement into or under the insulation.

(5) Exterior Architectural features. Code required building 

envelope insulation and air sealing is not disrupted at exterior 

architectural features such as stairs and decks. 

Renovation Note: Existing attic access, knee wall door, or dropdown stairs are insulated.

(2) Band Joist and Rim Joists. Band and rim joists are insulated 

and air sealed.

701.4.3.4 CEILINGS AND ATTICS

Renovation Note: Existing uninsulated rim and/or band joists 

are insulated.

(a) Sill sealer, or other material that will expand and contract, shall 

be installed between foundation and sill plate.

(b) Caulk or the equivalent is installed to seal the bottom plate of 

exterior walls.

(3) Between Foundation and Sill Plate Bottom Plate

Renovation Note: Existing skylight shafts and kneewalls are 

insulated.

(1) Attic access (except unvented attics). Attic access, knee 

wall door, or drop down stair is covered with insulation and 

gasketed. Knee wall door is insulated unit or is covered with 

insulation.

Renovation Note: Existing windows and doors are weatherstripped and sealed.

(b) Batt and loose-fill insulation is held in place by permanent 

attachments or systems in accordance with the manufacturer’s 

instructions.

701.4.3.1 GENERAL Insulation and air sealing is in accordance 

with the following: 

Renovation Note: Section 701.4.2.2 applies to renovations that 

involve one of the following:

(1) Insulation shall be installed in accordance with the 

manufacturer’s instructions or local code, as applicable.

701.4.3.2 FLOOR / FOUNDATION / CRAWLSPACE

(2) For existing duct systems, where the existing duct system is 

not in accordance with Section 701.4.2.1, the overall duct system 

leakage is reduced by using any approved methods in Section 

701.4.2.1, or aerosol spray applied duct sealant. Additional p

701.4.3 INSULATION and AIR SEALING

(1) the demolition, reconfiguration, or addition of interior walls or a 

modification in the duct system of the building

(2) a focused effort to solve the use of building cavities as supply 

ducts

(e) the entire system is upgraded in accordance with Section 

704.6.2.2

701.4.2.2 Building cavities are not used as supply ducts. 

Addition Note: Section 701.4.2.2 is mandatory for new 

construction portion of additions.

Addition and Renovation Note: Section 701.4.3.1(1) is 

mandatory for the new construction portion of additions and 

renovations.

(4) Skylights and kneewalls. Skylight shafts and knee walls are 

insulated to the same level as the exterior walls.

Renovation Note: Existing perimeter sill plates are sealed.

(2) Shafts (duct shaft, piping shaft/penetrations, flue shaft.) 

Openings to unconditioned space are fully sealed with solid 

blocking or flashing and any remaining gaps are sealed with caulk 

or foam. Fire-rated collars and caulking are installed where 

required.

(a) Insulation is installed to maintain permanent contact with the 

underside of the subfloor decking, enveloping any attached 

ductwork within the thermal envelope without compression or air 

gaps in the insulation. This practice does not apply to ducts or 

other mechanical equipment that are adjacent to the underside of 

the subfloor.

(1) Floors (Including insulated floors above garages and 

cantilevered floors)

Renovation Note: Existing openings to unconditioned spaces 

are sealed.

Renovation Note: Insulate existing uninsulated floors.

(2) Crawlspace. Where insulated, crawlspace wall insulation is 

permanently attached to the walls. Exposed earth in unvented 

crawlspaces is covered with continuous vapor retarder with 

overlapping joints taped or masticed. 

(1) Windows and Doors. Caulking, gasketing, adhesive flashing 

tape, foam sealant, or weatherstripping is installed forming a 

complete air barrier. 

Renovation Note: In accordance with Section 701.4.3.2(2):

(1) existing uninsulated crawlspace is insulated.

(2) exposed earth in existing crawlspace is covered.
344 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

 2 Add'l Pts

701.4.4 FENESTRATION

Mandatory

0 Complies

Table 701.4.4.1

Fenestration Specifications

Climate Zones U-Factor SHGC

1 and 2 0.65 0.4

3 0.4 0.4

4 to 8 0.35 Any u=.30; shgc=.31

1 to 3 0.75 0.4

4 to 8 0.6 Any

702 Performance Path

Mandatory

Comply.

(1) 15%

30 776

Insulate perimeter (R-10) and under slab to 

condition ducts. Tstat is std.

(2) 30%

60

60 1,611 (60) R-49 in attic; move 2x6 spacing to 24"; air 

seal (std.); seal ducts. Tankless w/h

(3) 50%

100 100 7,500 (100) 92% tankless and closed loop solar hot 

water.

(4) 60%

120

120 8,345 R-60 w/raised heel truss; R-10 foam 

sheathing; 1.75ACH50; 96% heat; Wdw 

u=.20 shgc=.35.

 0 Add'l Pts

703 Prescriptive Path 

Points per Table 

703.1.1

Sect. 703 pts. 36

Practices 704 5

Zone 2 Zone 3

10% UA improvement 10 points 12 points

20% UA improvement 20 points 24 points

Zone 4 Zone 5-6

10% UA improvement 14 points 16 points 16 (16) 12.8% by resCheck by LwB

20% UA improvement 28 points 32 points

Zone 7-8

10% UA improvement 18 points

20% UA improvement 36 points

Points per Table 

703.1.2

Grade Points

1 15

2 10

3 0

Table 703.1.1

Climate Zone

703.1 Building envelope. Where the total building thermal 

envelope UA is less than required by ICC IECC, Section 402.1.4, 

the total building thermal envelope UA is in accordance with Table 

703.1.1. Where insulation is used to achieve these percentages, 

a third-party grading of the installation as achieving Grade 1 is 

required. A documented analysis is performed using RES Check 

version 4.0.1 or later, or equivalent, based on a comparison to the 

ICC IECC, IRC, or IBC.

Renovation Note: Application of Section 702.2: A baseline 

energy use measurement is calculated for the existing building. 

(Based on the reduction in whole building energy use, points are 

given for every increase in efficiency in accordance with Section

Total Building Thermal Envelope UA

701.4.4.1 The NFRC-certified U-factor and SHGC windows, 

exterior doors, skylights, and tubular daylighting devices (TDDs) 

are in accordance with ENERGY STAR, or equivalent, or Table 

701.4.4.1. Decorative fenestration elements with a maximum 

area of 15 square feet or 10 percent of the total glazing area, 

whichever is less, are not required to comply with this practice. 

Skylights and TDDs 

(max. certified ratings)

(b) Insulation is installed in accordance with the manufacturer’s 

instructions and/or industry standards.

703.1.2.1 Both Grade 1 and Grade 2 installations are in 

accordance with the following:

Renovation Note: Provide blocking or baffle at eaves to ensure 

ventilation over attic iinsulation.

702.1 Points from Section 702 (Performance Path) shall not be 

combined with points from Section 703 (Prescriptive Path).

Table 703.1.2

703.1.2 The insulation installation is graded by a third party and is 

in accordance with Sections 703.1.2.1, 703.1.2.2, 703.1.2.3, and 

/or 703.1.2.4, as applicable. (Points not awarded in this 

section if already awarded under Section 703.1.1)

Insulation Installation Grades

Windows and Exterior Doors 

(maximum certified ratings)

702.2 Energy efficiency features are implemented to achieve 

energy cost performance that exceeds ICC IECC by the following. 

A documented analysis using software in accordance with ICC 

IECC, Section 404, or ICC IECC Section 506.2 through 506.5, 

applied as defined in the ICC IECC, is required.

(a) Grades apply to cavity fill insulation, continuous rigid 

insulation, and any other field-installed insulation products. 

Grading applies to ceilings, walls, rim joists, conditioned 

basements and crawlspaces, except as specifically noted. 

Inspection shall be conducted before insulation is covered.

(c) Wall cavity insulation is enclosed on all six sides, and is in 

substantial contact with the sheathing material on one or more 

sides (interior or exterior) of the cavity.

(a) Insulation uniformly fills each cavity side-to-side and top-tobottom, without substantial gaps or voids around obstructions 

(such as blocking or bridging).

703.1.2.2 Grade 1 installation in accordance with the following: 

(b) Compression or incomplete fill amounts to no more than 2% 

or less, presuming the compression or fill is at least 70% of the 

intended fill thickness; occasional small gaps are acceptable.
APPENDIX B 345

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Points per 

Table 703.1.3

Table 703.1.3

Exterior Mass Walls

3 in. to <6 in. 6 in.

Climate Zones 1, 2, 3, 4 except marine, and 5 

dry. 4 6

Climate Zones 4 marine, 5 except dry, and 6. 3 5

Climate Zones 7 and 8 0 0

703.2 Insulation & Air Sealing

15 15 (15)

(2) No third party verification performed. 3 3 (3)

703.2.1.1 GENERAL

(d) Air impermeable insulation.

703.2.1.1.2 Plumbing and Wiring 

703.2.1.3 WALLS

(3) Insulation is in substantial contact with sheathing materials on 

one or more sides.

(1) Thermal insulation is installed in substantial contact with 

interior and exterior air barrier to provide continuous alignment of 

the insulation with the air barrier. The following are deemed to be 

their own air barrier:

(a) Any spray or rigid foam insulation with an air permeance of 

0.02 L/s-m2 or less at 75 Pa.

(b) ICFs, SIPS, and other wall systems that provide their own air 

barrier, except at interfaces with other materials or assemblies, or 

penetrations.

(c) Spray foam that complies with the following: 

(ii) Continuous in the cavity without any unrepaired breaks.

(iii) air impermeable

(2) Voids or areas of incomplete fill (less than 30% of full 

thickness) are 2% or less of the insulated area.

(i) continuously attached to the top, bottom and both sides of the 

cavity

(c) Exterior rigid insulation shall have substantial contact with the 

structural framing members or sheathing materials, and is tightly 

fitted at joints.

(b) In conditioned basement or crawlspace the following apply:

(g) ICFs, SIPs, and other wall systems that provide integral 

insulation comply with “Grade 1” insulation installation 

requirements where properly installed. 

(d) Cavity insulation is split, installed, and/or fitted tightly around 

wiring and other services.

(e) Exterior sheathing is not visible from the interior through gaps 

in the cavity insulation.

(f) Faced batt insulation is permitted to have side-stapled tabs, 

provided the tabs are stapled neatly with no buckling, and 

provided the batt is only compressed at the edges of each cavity, 

to the depth of the tab itself.

(i) insulation is installed in complete contact with the subfloor 

surfaces. 

(a) A maximum of 2% of the surface area of insulation is missing. 

Compression or incomplete fill amounts to 10 percent or less, 

presuming the compression or fill is a minimum of 70 percent of 

the intended fill thickness.

(h) “Grade 1” insulation must meet or exceed all requirements of 

“Grade 2” insulation.

703.1.2.3 Grade 2 installation is in accordance with the following:

703.1.3 More than 75% of the above-grade exterior opaque wall 

area of the building is mass walls. 

703.2.1.1.1 Air Barrier and Thermal Barriers

Mass Construction

(1) Third party verification performed.

703.2.1 Insulation and air sealing is installed in accordance with 

all of the following, as applicable:

703.2.1.2 Air barrier is installed at any exterior edge of insulation 

at floors, foundations, and crawlspaces including insulated floors 

above garages and cantilevered floors.

(ii) Floor insulation over vented or ambient conditions is enclosed 

on six sides.

(c) Floor insulation over unconditioned basements is not required 

to be enclosed on six sides. 

(4) Any exterior rigid insulation is tightly fitted or interlocking at 

the joints. 

(1) At a minimum, insulation is placed between the outside 

(ceiling, wall, or floor) and the pipes.

(d) Ceiling insulation is not required to be enclosed when the 

insulation is installed in complete contact with the drywall or 

plywood surfaces it is intended to insulate.

(e) Eave baffles or equivalent construction is installed to prevent 

wind washing.

(a) Standard insulation installation not in accordance with Grade 1 

or Grade 2 criteria.

(f) Installation with occasional installation defects is permitted: 

gaps around wiring, electrical outlets, plumbing and other 

intrusions; rounded edges or shoulders.

703.1.2.4 Grade 3 installation is in accordance with the following:

703.2.1.1.3 Narrow cavities are filled and batts are cut to fit.

703.2.1.1.5 Masonry fireplace equipped with gasketed doors, 

outside combustion air, and a chimney top damper.

703.2.1.1.4 HVAC register boots that penetrate the building 

envelope are caulked or sealed to the subfloor or drywall.

(2) Batt insulation is split or cut to fit around wiring and plumbing.

(3) Sprayed insulation is installed to encapsulate pipes where the 

pipe temperature is 180 degrees F (82.2C) or less. Wiring is 

fastened in place to prevent displacement prior to spraying.
346 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

703.2.1.4 CEILINGS and ATTICS

(c) 50 percent 3 Add'l Pts

703.3 FENESTRATION

Points Per 

Tables 

703.3.1(a) or 

703.3.1(b)

U-Factor and SHGC Climate Zone

0.45 0.30 1 and 2 8

0.35 0.30 3 8

0.30 Any 4 and 5 5 5 (5)

0.30 Any 6 and 8 6

0.55 0.35 1 to 3

0.55 Any 4 to 8

U-Factor and SHGC Climate Zone

0.45 0.25 1 and 2 10

0.35 0 .25 3 10

0.25 Any 4 and 5 10

0.25 Any 6 thru 8 12

0.50 0.35 1 to 3

0.50 Any 4 to 8

703.4 HVAC Equipment Efficiency

4

(1) Table 703.4.2(1) Gas and propane 

heaters:

5 >92% 12 12 (12)

5 >83% 7

5 >90% 11

5 14 (11.5) 1

5 15 (12.5) 2

5 17 (12.5) 3

5 19 (12.5) 3

1

2

1

4

1

(1) Gas Water Heating

Table 703.3.1(b) - Enhanced Fenestration Specifications

Skylights and TDDs (maximum certified ratings)

Points Per 

Tables 

703.5.1(1)(a) or 

703.5.1(1)(b)

703.5.1 Water heater Energy Factor (EF) is equal to or greater 

than the following:

Skylights and TDDs (maximum certified ratings)

(1) At dropped ceilings and soffits, the air barrier is substantially 

aligned with insulation and any gaps are sealed with caulk, foam, 

or tape. 

703.3.1 The NFRC-certified U-factor and SHGC for windows, 

exterior doors, skylights, and tubular daylighting devices (TDDs) 

are in accordance with Table 703.3.1(a) or (b). Decorative 

fenestration elements with a maximum of 15 square feet or 10% 

of the to

Table 703.3.1(a) - Enhanced Fenestration Specifications

703.4.1 Combination Space Heating and Water Heating System 

(“Combo” System) is installed using either a coil from the water 

heater connected to an air handler to provide heat for the building 

or dwelling unit, or a space heating boiler using an indirect fired 

water heater. Devices shall have a combined annual efficiency of 

0.80. 

703.4.2 Furnace and/or boiler efficiency is in accordance with 

one of the following: 

(2) Install a device that can provide near real-time energy 

consumption information.

703.4.10 An ENERGY STAR, or equivalent, programmable 

thermostat is installed to control each heating and cooling zone. 

(Points awarded per dwelling unit.)

703.5 Water Heating Design, Equipment, and Installation

703.4.9 In multi-unit buildings, an advanced electric and fossil 

fuel submetering system is installed to monitor electricity and 

fossil fuel consumption for each unit. At a minimum, the 

information is available to the occupants on a monthly basis. 

703.4.7 ENERGY STAR, or equivalent, ceiling fans are installed. 

(Points awarded per building.)

703.4.8 Whole building or whole dwelling unit fan(s) with 

insulated louvers and a sealed enclosure is installed. (Points 

awarded per building.)

(1) Install a device providing monthly consumption information.

included above

included above

(3) An insulated cover is gasketed or sealed to the attic opening 

where a whole building or whole dwelling unit fan penetrates into 

the attic.

Windows and Exterior Doors (maximum certified ratings)

(1) Exterior walls behind the tub/shower are insulated and include 

an interior and exterior air barrier.

(2) Air sealed type electrical outlet boxes are installed or the air 

barrier extends completely behind the boxes. Insulation is placed 

between the sheathing and the rear of electrical or phone boxes 

located on exterior walls. Electrical outlet boxes ar

Windows and Exterior Doors (maximum certified ratings)

Points per Table 703.4.2(1)

(2) Access to vented attics, including knee wall doors, and/or 

drop down stairs, is caulked, gasketed, or otherwise sealed.

(3) Duplex and townhouse construction: In the common walls 

between dwelling units (e.g., gypsum shaft wall) an air barrier is 

installed to seal the gap between the common wall and the 

structural framing.

(4) Skylight shafts and knee walls are air sealed. Insulation on 

attic knee walls and skylight shafts are physically supported by 

stapling in place, netting or using other mechanical attachment.

(5) Fireplace walls: Air barrier that is alligned with insulation; any 

gaps are sealed with caulk or foam.
APPENDIX B 347

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Size (gallons) Energy Factor POINTS

30 to < 40 0.64 1

40 to < 50 0.62 1

50 to < 65 0.6 1

65 to < 75 0.58 1

75 0.56 1

 Any 0.8 10

Size (gallons) Thermal Efficiency POINTS

Any 82-86% 1

 Any > 86% 10

(2) Electric Water Heating

Size (gallons) Energy Factor POINTS

30 to < 40 0.95 1

40 to < 50 0.94 1

50 to < 65 0.92 1

65 to < 80 0.9 1

80 to < 100 0.88 1

100 0.86 1

(3) Oil Water Heating

Size (gallons) Energy Factor POINTS

30 to < 50 0.59 1

50 0.55 1

 (4) Heat Pump Water Heating

Energy Factor POINTS

Heat Pump 1.5 7

Heat Pump 2 10

Points per 

Table 703.5.2

Points for 

Desuper heater

5

2

2

703.5.4 Insulating hot water pipes 

1

1

1

704 Additional Practices

704.2 Lighting and Appliances

4

4 

8

2

2 

(1) 25% of lighting 2

(2) 50% of lighting 4

2

(1) Refrigerator 5 5 

(2) Dishwasher 2 2 

(3) Washing machine 4 4 

704.2.6 Induction cooktop is installed. 1

1

5

703.5.3 Drain-water heat recovery system is installed in multifamily units. (Points awarded per building.)

704.3.1.1 Sun-tempered Design: Building orientation, sizing of 

glazing, and design of overhangs are in accordance with all of the 

following:

704.2.1 Hard-wired lighting meets one of the following: 

Points per 

Table 

703.5.1(3)

Table 703.5.1(1)(b) - Gas Water Heating

704.1 Application of Additional Practice Points. Points from 

Section 704 can be added to points earned in Section 702 

(Performance Path), Section 703 (Prescriptive Path) or Section 

701.1.3 (alternative Bronze Level compliance).

Points per 

Table 

703.5.1(4) Table 703.5.1(4) – Heat Pump Water Heating

(Storage with input rate of greater than 75,000 Btu/hr or 

instantaneous input rate greater than 200,000 Btu/hr)

Table 703.5.1(3) – Oil Water Heating

Points Per 

Tables 

703.5.1(2)

703.5.5 Indirect fired water heater storage tanks heated from 

boiler systems are installed.

703.5.4.1 Hot water lines are insulated with a minimum of R-4 

insulation.

703.5.4.2 Boiler supply piping is insulated in unconditioned 

spaces.

703.5.2 Desuperheater, s installed by a qualified installer or is 

pre-installed in the factory.

Table 703.5.2 – Desuperheater

Table 703.5.1(1)(a) - Gas Water Heating

Zone 1-4

(Storage with input rate of 75,000 Btu/hr or less or instantaneous 

input rate of 200,000 Btu/hr or less)

Zone 5-8

(1) A minimum of 50% of the total hard-wired lighting fixtures, or 

the bulbs in those fixtures, qualify as ENERGY STAR or 

equivalent.

(2) A minimum of 50% of the total hard-wired lighting fixtures 

qualify as ENERGY STAR or equivalent.

704.2.5 ENERGY STAR or equivalent appliance(s) are installed:

(3) A minimum of 80% of the exterior lighting wattage has an 

efficiency of at least 40 lumens per watt or be a solar powered 

light fixture. 

704.2.2 The number of recessed light fixtures that penetrate the 

thermal envelope are less than 1 per 400 square feet of total 

conditioned floor area and are in accordance with Section 

701.4.3.4(2). 

704.2.3 Occupancy sensors are installed on indoor lights, and 

photo or motion sensors are installed on outdoor lights to control 

lighting. 

704.2.7 Occupancy sensors are installed for a minimum of 80% 

of hardwired lighting outlets.

704.3.1 Solar space heating and cooling.

704.3 Renewable Energy/Solar Heating and Cooling

704.2.4 Tubular daylighting device (TDD) or a skylight with 

sealed, insulated, low-E glass is installed in rooms without 

windows. (Points awarded per building.)

(1) The long side (or one side if of equal length) of the building 

faces within 20o of true south.

(2) Vertical glazing area is between 5% and 7% of gross 

Conditioned Floor Area on the south face (also see Section 

704.3.1.1(8)).

Table 703.5.1(2) – Electric Water Heating

Climate Zone
348 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Climate Zone and Overhang Depth

Vertical Distance 

between bottom of 

overhang and top 

of window sill

1 through 3 2' 8" <7' 4"

1 through 3 2' 8" <6' 4"

1 through 3 2' 4" <5' 4"

1 through 3 2' 0" <4' 4"

1 through 3 2' 0" <3' 4"

4 through 6 2' 4" <7' 4"

4 through 6 2' 4" <6' 4"

4 through 6 2' 0" <5' 4"

4 through 6 2' 0" <4' 4"

4 through 6 1' 8" <3' 4"

7 and 8 2' 0" <7' 4"

7 and 8 1' 8" <6' 4"

7 and 8 1' 8" <5' 4"

7 and 8 1' 4" <4' 4"

7 and 8 1' 0" <3' 4"

1

3

1

(c) Covered porches

4

(3) Vertical glazing area is less than 2% of gross Conditioned 

Floor Area on the west face, and glazing is ENERGY STAR 

compliant or equivalent.

(4) Vertical glazing area is less than 4% of gross Conditioned 

Floor Area on the east face and glazing is ENERGY STAR 

compliant or equivalent.

(5) Vertical glazing area is less than 8% of gross Conditioned 

Floor Area on the north face, and glazing is ENERGY STAR 

compliant or equivalent.

(6) Skylights, where installed, are in accordance with the 

following:

(a) Shades and insulated wells are used and all glazing is 

ENERGY STAR compliant or equivalent.

(b) Horizontal skylights are less than 0.5 % of Finished Ceiling 

Area

(c) Sloped skylights on slopes facing within 45o of true South, 

East or West are less than 1.5% of the Finished Ceiling area

(7) Overhangs or adjustable canopies or awnings or trellises 

provide shading on south facing glass for the appropriate climate 

zone in accordance with Table 704.3.1.1:

(8) The south face windows have a SHGC of 0.40 or higher.

Table 704.3.1.1 Southern Window Overhang Depth

(9) Return air or transfer grilles/ducts are in accordance with 

Section 704.4.5. 

704.3.1.3 Passive cooling design features are in accordance with 

three or more of the following:

(1) Exterior shading is provided on east and west windows using 

one or a combination of the following strategies:

(a) Vine covered trellises with the vegetation separated a 

minimum of 1 foot from face of building.

704.3.1.2 Automated solar protection is installed to provide 

shading for windows.

Points for three items:

Points for one additional item:

(b) Moveable awnings or louvers

(d) Attached or detached conditioned/unconditioned enclosed 

space that provides full shade of east and west windows (e.g., 

detached garage, shed or building)

(2) Overhangs are installed to provide shading on south-facing 

glazing in accordance with Section 704.3.1.1(7). (Points not 

awarded if points are taken under 704.3.1.1.)

(3) Windows and/or venting skylights are located to facilitate 

cross ventilation.

(4) Solar reflective roof or radiant barrier is installed in Climate 

Zones 1, 2 or 3 and roof material meets a 3 year aged criteria of 

0.50.

(5) Internal exposed thermal mass is a minimum of three inches 

in thickness. Thermal mass consists of concrete, brick, and/or tile 

that are fully adhered to a masonry base or other masonry 

material and is in accordance with one or a combination of the fo

(a) A minimum of one square foot of exposed thermal mass of 

floor per three square feet of gross finished floor area. 

(b) A minimum of three square feet of exposed thermal mass in 

interior walls or elements per square foot of gross finished floor 

area.

(6) Roofing material is installed with a minimum 0.75 inch 

continuous air space offset from the roof deck from eave to ridge.

(2) Additional thermal mass for any room with south-facing 

glazing of more than 7% of the finished floor area is provided in 

accordance with the following:

704.3.1.4 Passive solar heating design. In addition to the suntempered design features in Section 704.3.1.1, all of the following 

are implemented: 

(1) Additional glazing, no greater than12%, is permitted on the 

south wall. This additional glazing is in accordance with the 

requirements in Section 704.3.1.1. 

(a) Thermal mass is solid and a minimum of 3” in thickness. 

Where two thermal mass materials are layered together (e.g. 

ceramic tile on concrete base) to achieve the appropriate 

thickness, they are fully adhered to (touching) each other. 

(b) Thermal mass directly exposed to sunlight must be provided 

in the following minimum ratios: 
APPENDIX B 349

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

704.3.2 Solar water heating

SEF - Electric Tank SEF - Gas Tank POINTS

1.30 - 1.50 0.85 - 1.00 8 8 Cost is in performance section 702.

1.51 - 1.80 1.01 - 1.20 11

1.81 - 2.30 1.21 - 1.50 14

2.31 - 3.00 1.51 - 2.00 17

 3.01 2.01 20

1

0.5

704.4 Ducts

5

15

15

12

Ducts brought inside at gold. ($3.95 lnf)

12 331 Approx. 20% of return system is in attic.

5

2nd floor supplied by one return.

704.5 HVAC Design and Installation

1

1 0 

1

1 

3

3 

149 

1

4

5

5 

260 Cost of air sealing is in 702.

(4) Air handler setting/fan speed is set per manufacturer’s 

instructions.

704.6 Installation and Performance Verification

(3) Burner is set to fire at nameplate input.

704.6.1 Third party onsite inspection is conducted to verify 

conformance with all of the following, as applicable. Minimum of 2 

inspections are performed. One inspection after insulation is 

installed and prior to being covered, and another inspection upon 

completion of the project. Where multiple building or dwelling 

units of the same model are built by the same builder, a 

representative sample inspection of a minimum of 15% of the 

buildings or dwelling units is permitted. 

704.5.5 Manufacturer’s label or printed specifications for sealed 

air handler (except furnaces) indicates the leakage is less than or 

equal to 2% of design airflow at a pressure of 1-inch w.g. (1250 

Pa). Air handlers are tested with inlets, outlets, an

(1) Ducts are installed per IRC/IMC and ducts are sealed.

(2) Building envelope air sealing is installed.

704.5.4 HVAC equipment operates using an alternate refrigerant 

containing no HCFCs. (Points awarded only until January 20, 

2010.)

(6) Total external system static does not exceed equipment 

capability at rated airflow. 

(1) Start-up procedure is performed according to manufacturer’s 

instructions.

(2) Refrigerant charge is verified by super-heat and/or subcooling method.

704.3.2.1 Solar water heater. SRCC (Solar Rating & 

Certification Corporation) OG 300 rated, or equivalent, solar 

domestic water heating system is installed. Solar Energy Factor 

(SEF as defined by SRCC) is in accordance with Table 704.3.2.1.

704.3.3 Additional renewable energy options

Table 704.3.2.1 - Solar Hot Water Systems

(i) Above latitude 35o: 5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(ii) Latitude 30o to 35o: 5.5 square feet of thermal mass for every 

1 square foot of south facing glazing. 

(iii) Latitude 25o to 30o: 6 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(c) Thermal mass not directly exposed to sunlight is permitted to 

be used to achieve thermal mass requirements of Section 

704.3.1.4 (2) based on a ratio of 40 square feet of thermal mass 

for every 1 square foot of south facing glazing. 

(3) In addition to return air or transfer grilles/ducts required by 

Section 704.3.1.1, provisions for forced airflow to adjoining areas 

are implemented as needed. 

704.3.3.1 Photovoltaic panels are installed on the property. 

(Points awarded per every 100 watts DC of the rated PV 

system) 

704.3.3.2 Other onsite renewable energy source is installed (e.g., 

wind energy, onsite micro-hydro power, active solar space 

heating systems). (Points awarded per every 1/10 kW of the 

system) 

704.4.1 Duct system is sized, designed, and installed according 

to ACCA Manual D or equivalent.

(2) Heating and cooling ducts and mechanical equipment are 

installed within the conditioned building space .

704.4.2 Space heating is provided by a system that does not 

include air ducts.

704.4.4 Ductwork is in accordance with all of the following: 

(1) Building cavities are not used as return ductwork.

704.4.3 Space cooling is provided by a system that does not 

include air ducts.

(3) Ductwork is not installed in exterior walls 

704.4.5 Return ducts or transfer grilles are installed in every 

room with a door. This practice does not apply to bathrooms, 

kitchens, closets, pantries, and laundry rooms. 

704.5.3 Performance of the heating/cooling system is verified by 

the HVAC contractor in accordance with all of the following: 

(5) Total air flow is within 10% of design flow.

704.5.1 ACCA Manual S or equivalent is used to select heating 

and/or cooling equipment.

704.5.2 HVAC contractor and service technician are certified by 

a nationally or regionally recognized program such as North 

American Technician Excellence, Inc. (NATE), Building 

Performance Institute (BPI), Radiant Panel Association, or 

manufacturers’ tr

(3) Insulation is installed in accordance with Section 703.1.2 

(4) Windows, skylights, and doors are flashed, caulked, and 

sealed in accordance with manufacturer’s recommendations and 

in accordance with Section 703.2.1.
350 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Need to upgrade water heater for power vent.

(a) 5 ACH50 0.25 nat 3

(b) 4 ACH50 0.2 6

(c) 3 ACH50 0.15 9 9 450 (9)

(d) 2 ACH50 0.1

12

12 0

(e) 1 ACH50 0.05 15

15

5 5 

15

8

8 376 4 hours for a technician crew (2)

7 Points Max

2

(2) Energy monitoring device 4

(3) Energy management control system 7

2

5

Base Pts. 35 0 1 0 0 0 18 525 8 382 Ch. 8 Subtotal 

Cost/Point

2

3 3

6

6

8

 Mandatory 

0 Add'l Pts

Mandatory

Points 

Reduced by 

Half

 0 Add'l Pts

Points 

Reduced by 

Half

(1) Builder selects a renewable energy service plan provided by 

the local electrical utility for interim (temporary) electric service. 

The builder’s local administrative office has renewable energy 

service.

2. Fossil fuel furnace and water heater is sealed combustion or 

power vented in accordance with Section 901.1.

(2) The buyer of the home selects a renewable energy service 

plan provided by the utility prior to occupancy of the home.

704.6.2 Third party testing is conducted to verify performance. 

704.6.2.1 Building envelope leakage rate is demonstrated by 

blower door test. In addition to the test, the following practices 

are required:

(a) Use of structured-type plumbing with demand controlled hot 

water loops, in which the volume of water contained in the pipe 

and fixture fittings downstream of the recirculating trunk line is a 

maximum of 4 cups (0.25 gallons).

(1) All hot water piping which runs to the plumbing fixtures in both 

the kitchen and bathrooms is 40-feet or less in length from the 

water heater and is sized in accordance with the code for the 

specified application.

(2) All hot water piping which runs to the plumbing fixtures in both 

the kitchen and bathrooms is 30-feet or less from the water 

heater and is sized in accordance with the code for the specified 

application.

(a) Measured flow at each supply and return register is within 

25% of design flow.

801.0 Intent. Measures that reduce indoor and outdoor water 

usage are implemented.

801.1. Indoor hot water usage is reduced by one of the following 

practices: 

705 Innovative Practices

801 Indoor and Outdoor Water Use

(1) Programmable communicating thermostat

705.2 Renewable energy service plan is as follows:

(b) Implement an engineered parallel piping system (i.e. manifold 

system) in which the hot water line distance from the water heater 

to the parallel piping system is less than 15 feet and the parallel 

piping to the fixture fittings contains a maximum of 8

(c) Central core plumbing system with all plumbing fixture fittings 

(e.g., faucets & showerheads) located such that the volume of 

water contained in each pipe run between the water heater and 

fixture fitting is a maximum of 6 cups (0.38 gallons).

1

(a) Tankless water heater is installed at point of use and is 

served only by cold water or a solar-assisted system.

(4) Pipe runs exceeding 40-feet from the water heater to fixture 

locations are aided by one of the following: 

Renovation Note: Section 801.1 applies only to renovation 

projects that have the ability to meet the requirements of Section 

801.1. (Renovation projects that are unable to meet the 

length of pipe runs indicated in Section 801.1, but are able to 

shorten e

(1) Minimum of 25% to less than 50% reduction in total pipe 

length or volume.

(2) More than or equal to 50% reduction in total pipe length or 

volume.

Addition Note - Section 801.1.1(3): Where a new hot water 

system is provided in an addition, this item applies. (Points for 

Section 801.1.1(3)(a), (b), and (c).

705.1 Energy consumption control. A whole building or whole 

dwelling unit device is installed that controls or monitors energy 

consumption. 

(3) 6% for ductwork both inside and outside the building thermal 

envelope.

704.6.2.3 Balanced HVAC air flows are demonstrated by flow 

hood or other acceptable flow measurement tool. Test results in 

accordance with both of the following:

(b) Total airflow is within 10% of design flow.

704.6.2.2 The entire central HVAC duct system, including air 

handlers and register boots, is tested for leakage at a pressure 

differential of 0.1 inches w.g. (25 Pa). The maximum leakage as 

a percent of the system design flow rate is in accordance with 

1. Whole building ventilation is provided in accordance with 

Section 902.2.

(1) 6% for ductwork entirely outside the building's thermal 

envelope.

(2) 6% for ductwork entirely inside the building's thermal 

envelope.

3. Fireplaces and Fuel Burning Appliances are in accordance with 

901.2.

The maximum leakage rate is in accordance with:

CHAPTER 8: WATER EFFICIENCY

(3) One of the following piping system designs is implemented:

(b) On demand hot water recirculation system is installed.

Addition Note: Section 801.1 applies only to the new 

construction portion of addition(s) that alter portions of a building 

with hot water applicances and/or fixtures.

Costs are included in performance rating in 

702, however, this is the cost of a power vent 

water heater.
APPENDIX B 351

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2 Add'l Pts

2 2

8 8

12

1 Add'l Pt

1 Add'l Pt

1 Add'l Pt

1 1

1 Point 

(3 Points Max)

1

Delta T13020/120/220 doesn't indicate flow 

rate, but this is EPA min.

1 Add'l Pt 1 -1

2 Add'l Pts 2 0

0 Add'l Pts

1 Add'l Pt

1 Add'l Pt

1 

3 Pts Max 2

2 Add'l Pts 2

1 Add'l Pt

2 Add'l Pts

2 Add'l Pts

1 

3 Pts Max

1 Add'l Pt 

6 Pts Max

Mandatory

6 

18 Pts Max

12 525

4 

Max 4 Points

6 

Add'l Points 6 0

0 Add'l Pts

1 Add'l Pt 

10 Pts. Max

2

4

4

4

4

6

1 Add'l Pt

2 Add'l Pts 

3

801.4 Showerheads

801.4 (3&4) All shower compartments in the home comply with 

801.4 (1&2).

801.6 Water closets and urinals. Water closets and urinals are 

in accordance with the following: (For water closets, points 

awarded for either Section 801.6 or 802.2, but not both.)

(2) A water closet is installed with an effective flush volume of 

1.28 gallons or less when tested in accordance with ASME 

A112.19.2 (all water closets) and ASME A112.19.14 (all dual 

flush water closets), and is in accordance with EPA WaterSense 

Tank-Type High-Efficiency Toilet. (Points awarded per fixture.)

Addition Note: Section 801.4 applies only to additions that 

include a minimum of one bath or shower.

801.5.1 Water-efficient lavatory faucets with 1.5 gpm or less 

maximum flow rate when tested at 60 psi in accordance with 

ASME A112.18.1 are installed.

Renovation Note: Section 801.4 applies only to renovations that 

include one or more bathrooms with a bath or shower. (Points 

awarded per fixture.)

Addition and Renovation Note: Existing showerhead is 

replaced with a showerhead that has a flow rate in accordance 

with Section 801.4. (Points awarded per additional showerhead.)

Addition and Renovation Note - Section 801.1.1(3): Section 

801.1.1(3) applies only where hot water lines in the existing 

building are accessible. (To receive additional points, a 

minimum of 50 percent of the hot water lines are in 

accordance with Section

(1) Dishwasher

(3) Replace existing washing machine with a water factor of 6.0 or 

less

(2) Replace existing washing machine

Addition and Renovation Note: Section 801.2 applies as 

follows when existing appliance(s) are properly disposed of and 

not placed into secondary service in a dwelling unit. 

(1) Replace existing dishwasher

(3) Washing machine with a water factor of 6.0 or less

(2) Washing machine

(1) High distribution uniformity (DU) rotating spray heads

(3) Bubblers

(2) Drip irrigation

(5) Soaker hose

(6) Subsurface irrigation

801.7.2 Irrigation system is in accordance with both of the 

following: 

Renovation Note: Section 801.7.1 applies only to renovations of 

the landscape, hardscape, or outdoor living areas with existing 

irrigation systems or to renovations that replace the irrigation 

system.

(4) Drip emitters

Addition and Renovation Note: Section 801.6 applies only to 

additions and renovations that include bathrooms. 

801.7 Irrigation systems 

Addition and Renovation Note: Section 801.7.1 applies only to 

additions that increase the building footprint or affect the irrigation 

system.

801.5.2 Self-closing valve, motion sensor, metering, or pedalactivated faucet is installed to enable intermittent on/off operation. 

(Points awarded per fixture.)

Renovation Note: Additional points for Section 801.5.2 apply 

where installed.

Renovation Note: Renovations that do not include bathrooms 

receive points for replacing exisiting water closets with water 

closets in accordance with Section 801.6 (Points awarded per 

fixture.)

4) All water closets and all urinals are in accordance with Section 

801.6(2) or Section 801.6(3), as applicable. 

(3) A urinal is installed with a flush volume of 0.5 gallons or less 

when tested in accordance with ASME A112.19.2.

(1) Gold and Emerald Levels: All water closets and urinals are in 

accordance with either Section 801.6 or 802.2.

801.7.1 A low-volume, irrigation system is installed for each 

landscape type utilized: (Points awarded for each type of 

irrigation system installed.)

Addition and Renovation Note: Replace all faucets in nonrenovated bathrooms with faucets that are in accordance with 

Section 801.5.1. 

(3) All shower compartments installed meet the above conditions 

and are 2.0 to less than 2.5 gpm. 

(4) All shower compartments installed meet the above conditions 

and are 1.6 to less than 2.0 gpm. 

801.5 Faucets

801.2 Energy Star® or equivalent water-conserving appliances 

are installed 

801.3 A minimum of one food waste disposer is installed at the 

primary kitchen sink. 

801.4 (1&2) 1) The total showerhead flow rate at any point in 

time, for all showerheads in each shower compartment is less 

than 2.5 gpm, tested at 80 psi per ASME A112.18.1/CSA 

B125.1. 2) In addition the showerheads must be equipped with an 

automatic com

(1) a bathroom (Points awarded for each bathroom.)

(2) all lavatory faucets in the home meet the conditions of 801.5.1

Addition Note: Section 801.5.1 applies only to additions that 

include a bathroom.

Renovation Note: Section 801.5.1 applies only to renovations of 

existing bathrooms.
352 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1 Add'l Pt

1 Add'l Pt

2

1 Add'l Pt

2 Add'l Pts

4

4

15 15 0

6 6 382 

2

2 0

1

4 Points 

(per fixture)

10

2 Add'l Pts

5 Add'l Pts

24 Points Max

Mandatory

8

8 Add'l Points

2

Base Pts. 39 0 21 106 41 261 36 672 5 116 Ch. 9 Subtotal 

Cost/Point

5

Mandatory 

Mandatory 

2 Additional 

Points

5

5 Water heater is draft.

2 Additional 

Points

5 5

3

5

801.7.4 The irrigation system(s) is controlled by a smart 

controller: 

(1) Evapotranspiration (ET) based irrigation controller with a rain 

sensor 

Addition Note: Section 801.7.2 applies to additions that increase 

the building footprint or modify an existing irrigation system.

Renovation Note: Section 801.7.2 applies to renovations with 

existing irrigation systems that are modified, or to renovations 

where a new irrigation system is installed or the existing irrigation 

system is replaced.

Addition Note: Section 801.7.3 applies to additions that increase 

the building footprint or affect the irrigation system.

Renovation Note: Section 801.7.3 applies only to renovations 

with existing irrigation systems that are modified, or to renovations 

where a new irrigation system is installed or the existing irrigation 

system is replaced.

801.7.3 Irrigation system is zoned separately for turf and bedding 

areas.

(2) Soil moisture sensor based irrigation controller

3) All toilets and urinals are in accordance with Section 802.2 (2). 

(1) Each water closet flushed by reclaimed or recycled water.

(2) Irrigation from reclaimed or recycled water onsite

802.2 Composting or waterless toilets and/or urinals. 

Composting or waterless toilets and/or urinals are in accordance 

with the following: (For water closets, points awarded for 

either Section 802.2 or 801.6, but not both) 

Addition and Renovation Note: Additional points are available 

for Section 802.1 as follows: 

2) irrigation from reclaimed or recycled water onsite

1) each water closet flushed by reclaimed or recycled water

(3) No irrigation is installed and a landscape plan is developed in 

accordance with Section 503.5(1) as applicable. (Points must be 

taken in 503.5(1) in order to receive points for 801.7.4(3)

801.8 Rainwater collection and distribution is provided.

2) Composting or waterless toilet and/or urinal is installed. (Points 

awarded per fixture)

(1) Rainwater is collected and used 

(2) Rainwater is distributed using a renewable energy source or 

gravity.

801.9 Water Filters. Water filter is installed to improve water 

quality for the whole building or whole dwelling unit.

802.1 Gray water (as specified in ICC IRC, Appendix O) is 

separated and reused, as permitted by local building code. 

(Points awarded for either Section 802.1(1) or 802.1(2), not 

both)

(1) Excess Water Flow Shutoff

(2) Leak Detection System

802.3 Automatic shutoff water devices. One of the following 

automatic shutoff water supply devices is installed. Where a fire 

sprinkler system is present, installer is to ensure the device will 

not interfere with the operation of the fire sprinkler system

1) designed by a professional in accordance with EPA 

WaterSense requirements or equivalent

2) installed in accordance with EPA WaterSense program or 

equivalent 

1) Gold and emerald levels: All water closets and urinals are in 

accordance with either Section 802.2 or Section 801.6. 

CHAPTER 9: INDOOR ENVIRONMENTAL QUALITY

901 Pollutant Source Control

901.0 Intent. Pollutant sources are controlled. 

901.1 Space and water heating options

901.1.3 The following combustion space heating and water 

heating equipment is installed within conditioned space. 

(1) Direct vent furnace or boiler

(2) (a) Power vent water heater

901.1.1 Natural draft space heating or water heating equipment is 

not located in conditioned spaces, including conditioned crawl 

spaces. Natural draft equipment is permitted to be installed within 

the conditioned spaces if located in a mechanical room that has 

an outdoor air source, and is otherwise sealed and insulated to 

separate it from the conditioned space(s).

Addition Note: Section 901.1.1 applies to additions that include 

the use of natural draft space heating or water heating equipment.

901.1.2 Air handling equipment or return ducts are not located in 

the garage, unless placed in isolated, air-sealed mechanical 

rooms with an outside air source. 

Renovation Note: Section 901.1.1 applies to renovations that 

include areas where natural draft space heating or water heating 

equipment is located.

Renovation Note: Additional points are available for any 

renovation that modifies all of the existing building's natural draft 

space heating or water heating equipment in accordance with 

Section 901.1.1

Renovation Note: Section 901.1.2 applies to renovations that 

modify existing duct systems.

 (b) Direct vent water heater
APPENDIX B 353

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2 Additional 

Points

2

5

7

4

6

6

6

6

2 Add'l Pts

2 Add'l Pts

2 Add'l Pts

7 7

Mandatory 

2 Points 2 0

Specs on door required. Assume 20 min. 

rating and bomber hinges (auto close)?

Mandatory 

2 Points 2 5

Doesn't comply

4

10

Mandatory 

1 Add'l 

Point

3 Add'l 

Points

10 points 

max.

Mandatory

0

2 Points per 

Product Group

2 Points per 

Product Group

3 Points per 

Product Group

901.2.1(2)(b) Factory-built wood burning fireplaces are in 

accordance with the certification requirements of UL 127 and are 

EPA certified.

Renovation Note: Section 901.1.3 applies to renovations that 

replace existing space heating and water heating combustion 

equipment with equipment in accordance with Section 901.1.3 for 

new construction.

901.1.4 The following electric equipment is installed:

1) Heat pump air handler in unconditioned space

2) Heat pump air handler in conditioned space 

901.2.1(1) Natural gas and propane fireplaces that are power 

vented or direct vented, are equipped with permanently fixed 

glass fronts or gasketed doors, and comply with ANSI 

Z21.88/CSA 2.33a or ANSI Z21.50/CSA 2.22 

901.2 Fireplaces and Fuel Burning Appliances (except cooking 

appliances, clothes dryers, water heaters, and furnaces) located 

in conditioned space are code compliant, vented to the outdoors, 

and have adequate combustion and ventilation air provided to 

minimize spillage or back-drafting, in accordance with the 

following: All of the following items are mandatory, if 

applicable, for certification.

901.2.1(2)(a) Wood burning fireplaces are equipped with 

gasketed doors designed to operate with the doors closed, 

outside combustion air, and a means is provided for sealing the 

flue to minimize interior air (heat) loss when not in operation.

901.3 Garages are in accordance with the following:

Renovation Note: Additional points are available for removing or 

rendering permanently unusable each existing wood-burning 

fireplace that is not in accordance with Section 901.2.1(2)(a) in 

areas other than the main renovation area.

901.3(1)(a) Where installed in the common wall between the 

attached garage and conditioned space, the door is tightly sealed 

and gasketed. 

901.2.1(2)(c) Wood stove and fireplace inserts, as defined in UL 

1482, Section 3.8 are in accordance with the certification 

requirements of UL 1482 and are in accordance with the emission 

requirements of the EPA Certification and the State of 

Washington W

901.2.1(2)(d) Pellet (biomass) stoves and furnaces are in 

accordance with the requirements of ASTM E1509 or are EPA 

Certified. 

Renovation Note: Removal of or rendering permanently 

unusable an existing fireplace and/or other fuel-burning 

appliances that are not in accordance with Section 901.2.1.

Renovation Note: Additional points are awarded for the 

replacement of each existing fireplace that is not in accordance 

with Section 901.2.1 with a fireplace that is in accordance with 

Section 901.2.1

901.2.1(2)(e) Masonry heaters are in accordance with the 

definitions in ASTM E1602 and ICC IBC, Section 2112.1. 

901.2.2 Fireplaces, woodstoves, pellet stoves, or masonry 

heaters are not installed. 

901.3(1)(b) A continuous air barrier is provided between walls 

and ceilings separating the garage space from the conditioned 

living spaces. 

901.3(1)(c) For one and two-family dwelling unit attached 

garages, a 100 cfm or greater ducted, or 70 cfm or greater 

unducted wall exhaust fan is installed and vented to the outdoors, 

designed and installed for continuous operation, or has controls 

(e.g., motion detectors, pressure switches) that activate 

operation for a minimum of 1 hour when either human passage 

door or roll-up automatic doors are operated. For ducted exhaust 

fans, the fan airflow rating and duct sizing are in accordance with 

Appendix A. (If you claim points for 901.3(1)(c), you cannot claim 

points for 901.3(2). 

901.3(2) A carport is installed, the garage is detached from the 

building, or no garage is installed. (If you claim points for 

901.3(2), you cannot claim points for 901.3(1)(a), 901.3(1)(b), or 

901.3(1)(c).

Addition Note: Section 901.3 applies where the addition is a 

garage or shares a continuous air barrier with a garage.

Renovation Note: Section 901.3 applies to renovations that 

involve construction adjacent to an attached garage.

Renovation Note: A focused effort to create a continuous air 

barrier between the garage and conditined space, including 

penetrations, occurring between walls and ceilings separating the 

garage and conditioned space.

(4) Particleboard, MDF, or hardwood plywood is in accordance 

with CPA 2.

(3) Hardwood plywood is in accordance with HPVA HP-1 and 

HUD Title 24, Part 3280.

901.4(1) Structural plywood used for floor, wall, and/or roof 

sheathing is compliant with DOC PS 1 and/or DOC PS 2. OSB 

used for floor, wall, and/or roof sheathing is compliant with DOC 

PS 2. The panels are made with moisture-resistant adhesives. 

The trademark indicates these adhesives as follows: Exposure 1 

or Exterior for plywood, and Exposure 1 for OSB. 

901.4(2-6) Wood Materials. A minimum of 85% of material within 

a product group (i.e. wood structural panels, countertops, 

composite trim/doors, custom woodwork, and/or component 

closet shelving) is manufactured in accordance with the following: 

(2) Particleboard and MDF (medium density fiberboard) is 

manufactured and labeled in accordance with CPA A208.1 and 

CPA A208.2, respectively.
354 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4 Points per 

Product Group

4 0 Interior doors and trim and cabinets.

4 Points per 

Product Group

2 Add'l Pts

Mandatory

0

6 6 0

2 2 0

2

2 Add'l Pts

2 Add'l Pts

0 Add'l Pts

1 Add'l Pts

6

4

Specify insulation, gypsum board and paints 

with low VOC and low emmiting products. 

Cost covers paperless drywall and low VOC 

paint. Insulation should be at n/c.

5

8

Mandatory 

1 Add'l Point

5

5

108 PM 06160-3 "use adhesives with a VOC 

content of 50 g/L or less calced to 40 CFR 

59.

PM 06200-3 "Finish Carpentry...Aliphatic or 

phenolic resin wood glue...for general 

carpentry use." Note: some white 

construction glues comply.

8 Case of caulk (add to base).

5

5 0

5

901.5(2) A minimum of 85% of installed carpet area, carpet 

cushion (padding), and carpet adhesives are in accordance with 

the emission levels of CDPH 01350, as certified by a third-party 

program, such as the Carpet and Rug Institute’s (CRI) Green 

Label Pl

(a) Carpet

(b) Carpet cushion

901.5 Carpets are in accordance with the following:

901.5(1) Wall-to-wall carpeting is not installed adjacent to water 

closets and bathing fixtures .

901.7 Wall coverings. A minimum of 85% of wall coverings are in 

accordance with the emission concentration limits of CDPH 

01350 (using the office scenario), as certified by a third-party 

program, such as the Scientific Certification Systems (SCS) 

Indoor Advantage Gold Program or the Greenguard 

Environmental Institute's Children and Schools Certification 

Program. 

901.8 Architectural coatings. A minimum of 85% of the 

architectural coatings are in accordance with one of the following 

conditions:

(c) Carpet adhesives

901.6 Hard-surface flooring. A minimum of 85% of installed hardsurface flooring is in accordance with the emission concentration 

limits of CDPH 01350 (using the office scenario), as certified by a 

third-party program, such as the RFCI's FloorScore Indoor Air 

Certification Program or the Greenguard Environmental Institute's 

Children and Schools Certification Program. 

Renovation Note: Section 901.5(2) applies to renovations where 

existing carpet is replaced. Remove existing carpet and perform 

one of the following repair methods:

1) Existing carpeted floor area is exposed, cleaned, and finished 

and is used as non-carpeted finished floor.

2) Carpet is installed in accordance with Section 901.5.

3) New non-carpet flooring product in compliance with an 

approved green labeling program(s) is installed.

(2) CARB Suggested Control Measure for Architectural Coatings 

(3) GS-11

901.8.1 Site-applied interior products are in accordance with one 

or more of the following: 

(1) Zero VOC, determined by EPA Method 24 (VOC content 

below the detection limit for the method). 

(b) 100 grams/liter non flat

(c) 350 grams/liter clear wood varnish

(4) VOC limits in accordance with:

(a) 50 grams/liter flat 

901.9.1 For exterior low-VOC adhesives and sealants, a minimum 

of 85% of site-applied products used for the installation of 

subfloors and on the exterior of the project are in accordance with 

one of the folllowing: 

(1) The California Air Resources Board consumer products 

regulation as follows: 

(d) 550 grams/liter clear wood lacquer 

901.8.2 Site-applied interior products are in accordance with the 

emissions levels of CDPH 01350, as certified by a third party 

program such as the Scientific Certification Systems (SCS) 

Indoor Advantage Gold Program or the Greenguard 

Environmental Institute's Children and Schools Certification 

Program.

Addition and Renovation Note: Section 901.8 applies when the 

building is occupied during construction.

901.9 Adhesives and Sealants. 

c) The VOC content of all other caulks and sealants not to exceed 

2% by weight or 30 grams/liter, whichever is greater.

(d) The VOC content of contact adhesives not to exceed 55% by 

weight or 480 grams/liter, whichever is greater.

(2) GS-36

a) Construction Adhesives: VOC content not to exceed 7% by 

weight or 75 grams/liter, whichever is greater. 

b) The VOC content of reactive sealants (i.e., silicones, 

polyurethanes, and hybrids, such as MS Polymer and silylated 

polyurethane resin or SPUR) not to exceed 4% by weight or 50 

grams/liter, whichever is greater.

(2) GS-36

901.9.2 Interior Low-VOC Adhesives and Sealants. For interior 

low VOC adhesives and sealants, a minimum of 85% of siteapplied products used within the interior of the building are in 

accordance with one of the following, as applicable:

1) CDPH 01350, as certified by a third party program, such as 

Scientific Certification Systems (SCS) Indoor Advantage Gold 

Program or the Greenguard Environmental Institute's Children 

and Schools Certification Program.

Renovation Note: Additional points for Section 901.4 apply to 

renovations that replace all existing countertops, shelving, and 

other nonstructural products.

(5) Composite wood or agrifiber panel products contain no added 

urea-formaldehyde or are in accordance with the CARB 

Composite Wood Air Toxic Contaminant Measure Standard.

(6) Non-emitting products. 
APPENDIX B 355

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2 2 (2) 

3

5

5 0 Require better spec on cabinets

2 Add'l Pts

4

4 0 Insulation can be respec'd to meet this 

criteria

1

1 0 Specify

3

3 90

1

1 44

1

1

Mandatory

Mandatory

0 Complies.

Mandatory

Complies.

8

8 Broan 4000 has 160 CFM, 2-speed, 5.6 

sones.

Mandatory 

Mandatory 

2 Add'l Pts

3 Add'l Points

1 Add'l Pts

9 Points Max

5 5 42 timer

2 2 42 timer

8

8 149 2 field personel 2 hours

Max. 6 

Points

2

(2) Formaldehyde emissions of duct insulation materials are in 

accordance with the emissions levels of CDPH 01350, as certified 

by a third-party program, such as the GREENGUARD 

Environmental Institute's Children and Schools Certification 

Program or the Scientific Certifications Systems (SCS) Indoor 

Advantage Gold Program.

901.10 Cabinets. A minimum of 85% of kitchen and bath vanity 

cabinets are in accordance with one of the following: (Where 

more than one of the following practices is used, the 

practice with the fewer number of points is awarded)

(1) Kitchen and bath vanity cabinets in accordance with KCMA 

ESP 01, or equivalent, are installed.

901.11 Insulation is in accordance with the following: 

(1) Formaldehyde emissions of wall, ceiling, and floor insulation 

materials are in accordance with the emissions levels of CDPH 

01350, as certified by a third-party program, such as the 

GREENGUARD Environmental Institute's Children and Schools 

Certification Program or theScientific Certifications Systems 

(SCS) Indoor Advantage Gold Program.

(2) Kitchen and bath vanity cabinets in accordance with CARB 

Composite Wood Air Toxic Contaminant Measure Standard are 

installed. 

(3) Kitchen and bath vanity cabinets are installed that contain no 

added urea formaldehyde or are in accordance with 

GGPS.EC.010.R0, ASTM D6670, or equivalent. 

Renovation Note: Additional Points for Section 901.10 apply to 

renovations that replace all existing kitchen and bath vanity 

cabinets. 

901.12 A carbon monoxide (CO) alarm is installed in a central 

location outside of each separate sleeping area in the immediate 

vicinity of the bedrooms. The CO alarm(s) is located in 

accordance with NFPA 720 and is hard-wired with a battery backup. The alarm device(s) is certified by a third party for 

conformance with either CSA 6.19 or UL 2034.

901.13 Building entrance pollutants control. Pollutants are 

controlled at all main building entrances by one of the following 

methods: 

(1) Exterior grilles or mats are installed in a fixed manner and may 

be removable for cleaning. 

(2) Interior grilles or mats are installed in a fixed manner and may 

be removable for cleaning. 

901.14 Non-smoking areas. All interior common areas of a multiunit building are designated as non-smoking areas with posted 

signage.

902 Pollutant Control

902.0 Intent. Pollutants generated in the building are controlled. 

902.1.1 Spot ventilation is in accordance with the following:

901.15 Renovation Note: For buildings constructed prior to 

1978, lead-safe work practices are used during renovation, 

remodeling, painting, and demolition.

(1) Bathrooms (including powder rooms) are vented to the 

outdoors. The minimum ventilation rate is 50 cfm for intermittent 

operation or 20 cfm for continuous operation in bathrooms. 

(2) Clothes dryers are vented to the outdoors. 

(3) Kitchen exhaust units and/or range hoods are ducted to the 

outdoors and have a minimum ventilation rate of 100 cfm for 

intermittent operation or 25 cfm for continuous operation. 

1) for first device

902.1.2 Bathroom and/or laundry exhaust fan is provided with an 

automatic timer and/or humidistat: 

Addition Note: Section 902.1 applies only to additions that 

include a kitchen or bathroom. 

Renovation Note: Section 902.1 applies to renovations that 

include a new or existing kitchen or bathroom. (Points 

available for all of the following conditions)

1) Existing non-vented kitchen range or bathroom exhaust 

systems in an area that is undergoing renovation are replaced 

with equipment that is in accordance with Section 902.1.

2) Existing non-vented kitchen range or bathroom exhaust 

systems in an area that is not undergoing renovation are replaced 

with equipment that is in accordance with Section 902.1.

3) New kitchen range or bathroom exhaust systems in 

accordance with Section 902.1 are installed where no exhaust 

system existed before renovation.

2) for each additional device

902.1.4 Exhaust fans are ENERGY STAR as applicable. 

902.1.3 Kitchen range, bathroom, and laundry exhaust are 

verified to specification. Ventilation airflow at the point of exhaust 

is tested to a minimum of 100 cfm intermittent or 25 cfm 

continuous for kitchens, and 50 cfm intermittent or 20 cfm 

continuous 

(1) ENERGY STAR, or equivalent, fans (Points awarded per 

fan) 
356 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

3

8

10

10 345

15

17

0 Add'l Pts

1 Add'l Pts

2 Add'l Pts

8

8 94 2 techs 1 hour.

3

3 0

0 Add'l Pts

1 Add'l Pts

Mandatory 0 Summit county is zone 1

10 10 101 Cost of PVC to roof

15

10

3

3 PM 15010-5 and PM 15010-9

0 Add'l Pts

3

Mandatory

1 Add'l Pt

1 Add'l Pt

1 Add'l Pt

5

2

2 127

2 2 0 Included in air sealing cost 702.

2 2 0

2 2 0

Mandatory

0 Doesn't Comply/Don't Know.PM 06160-2 

"Floor sheathing is rated for 24" oc span 

(23/32" OSB) and 1/4" luan BB 

underlayment.

(a) Attic/ceiling

903 Moisture Management: Vapor, Rainwater, Plumbing, HVAC

3) The building or dwelling unit is not occupied during the entire 

construction period and Sections 902.4(1) and 902.4(2) are 

implemented.

902.6 Living space contaminants. The living space is sealed to 

prevent unwanted contaminants.

903.0 Intent. Moisture and moisture effects are controlled. 

903.1 Tile backing materials installed under tiled surfaces in wet 

areas are in accordance with ASTM C1178, C1278, C1288, or 

C1325. 

903.2 Capillary breaks

(1) Attic access, knee wall door, or drop down stair is caulked, 

gasketed, or otherwise sealed. 

(2) All penetrations (e.g., top plates, HVAC register boots, 

recessed can lights, are sealed in the following areas:

d) hazardous waste removal

e) name and age of occupants of the building or dwelling unit at a 

specific time

(b) Wall

(c) Floors

2) The addition or renovation area is sealed off from the occupied 

portion of the building or dwelling unit. The same HVAC system 

for conditioning the air in renovated and occupied space is not 

used. 

(1) Exhaust or supply fan(s) ready for continuous operation and 

with appropriately labeled controls.

(2) Balanced exhaust and supply fans with supply intakes located 

in accordance with the manufacturer's guidelines to not introduce 

polluted air back into the building. 

(2) ENERGY STAR, or equivalent, fans operating at or below 1 

sone (Points awarded per fan)

902.2. Building ventilation systems. 

902.2.1 One of the following whole building ventilation systems is 

implemented and is in accordance with the specifications of 

Appendix B. (Points must be claimed in 902.2.1 to claim 

points in 902.2.2.

(3) Heat-recovery ventilator.

(4) Energy-recovery ventilator.

902.2.2 Ventilation airflow is tested to achieve the design fan 

airflow at point of exhaust in accordance with Appendix B. (Points 

must be claimed in 902.2.1 to claim points in 902.2.2) 

902.2.3 MERV filters 8 or greater are installed on central air 

systems. Designer or installer is to verify that the HVAC 

equipment is able to accommodate the greater pressure drop of 

MERV 8 filters. 

2) If the pressure and thermal boundaries of the addition are not 

separated from the existing building, Section 902.2.1 is applied to 

the whole building.

Renovation Note: Section 902.2.1 applies to the whole building 

for connected thermal and pressure boundaries.

Addition Note: Section 902.2.1 is applied to an addition in 

accordance with one of the following:

1) The pressure and thermal boundaries of the addition are 

separated from the existing building.

Addition Note: Section 902.2.3 applies only to additions that 

include a new HVAC system.

902.3 Radon control. Radon control measures are in accordance 

with ICC IRC Appendix F. (Zones are defined in Figure 9(1). 

902.3(1) Buildings located in Radon Zone 1 have a radon system 

installed.

(a) A passive radon system is installed. 

Renovation Note: Section 902.2.3 applies only to renovations 

that replace an existing HVAC system.

a) type of construction activity

b) ability to occupy the building or dwelling unit

c) IAQ protections for occupant(s) of the building or dwelling unit

(b) An active radon system is installed.

902.3(2) Buildings located in Zone 2. 

(a) A passive radon system is installed. 

Addition and Renovation Note: As an alternative to Section 

902.4(2), one of the following options is implemented: 

1) During construction, a construction indoor air quality (IAQ) 

schedule is developed that includes, at a minimum, all of the 

following: 

(1) HVAC supply registers (boots), return grilles, and rough-ins 

are covered during construction activities to prevent dust and 

other pollutants from entering the system. Note: Points not 

allowed for both 902.4(1) and (2)

(2) Prior to owner occupancy, HVAC supply registers (boots), 

return grilles, and duct terminations are inspected and vacuumed. 

In addition, the coils are inspected and cleaned and the filter is 

replaced if necessary. 

902.5 Central vacuum systems. Central vacuum system is 

installed and vented to the outside.

Addition and Renovation Note: Section 902.4(1) does not apply 

to additions and renovations except as noted in Addition and 

Renovation Note (3) below.

902.4 HVAC system protection. One of the following HVAC 

system protection measures is performed: 
APPENDIX B 357

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory 0

A501 shows aggregate and poly; just no 

indication of continuity under wall plate.

3

3 0 Add to specifications.

Mandatory 

0 Add'l Pts

6

Mandatory

0 Doesn't comply. Add to specs.

1 Add'l Pt

2 Add'l Pts

n/a

10

8

1 Add'l Pt

2 Add'l Pts

2 Points 

2 0 Add to specs.

Mandatory 

2 Points

0

4

4 0 Include in site superintendants 

responsibilities

2

2 0 pm 09680.1.7 and pm 09600.3.1

Mandatory

2 Add'l Pts

2

2 P201.

Mandatory 

Mandatory

3 Add'l 

Points

2 Add'l Pts

2

n/a

1 Add'l Pt

2 Add'l Pts

Renovation Note: The entire plumbing system between the 

connections of the water distribution and/or waste lines and the 

equipment and fixtures is replaced. This item applies if one or 

more of the following is implemented: 

1) Plumbing in unconditioned spaces is repaired or replaced.

a. In areas with free-draining soils, identified as Group 1 in the 

ICC IRC by a certified hydrologist, soil scientist, or engineer 

through a site visit, a gravel bed or geotextile matting is not 

required.

Modification for 1&2:

2) A minimum 4-inch thick uniform layer of sand, overlain with a 

layer or strips of geotextile drainage matting, covered with 

polyethylene sheeting, with the sheeting joints lapped according 

to Section 903.3.

903.2.1 A capillary break and vapor retarder are installed at all 

concrete slabs in accordance to the following:

1) A minimum 4-inch thick bed of 1⁄2 inch diameter or greater 

clean aggregate, covered with polyethylene or polystyrene 

sheeting in direct contact with the concrete slab, with the sheeting 

joints lapped in accordance with Section 903.3. (or)

2) Plumbing in unconditioned spaces is improved.

b. In Dry climate locations, as defined by Figure 6(1), 

polyethylene sheeting is not required unless required for radon 

resistance (Section 902.3).

903.2.2 Add a capillary break on footing to prevent moisture 

migration into foundation wall. 

903.3.1(1) Minimum 6-mil vapor retarder installed on the crawl 

space floor and extended up the wall sufficient to allow the 

material to be affixed with glue and furring strips. Joints of vapor 

retarder overlap a minimum of 6 inches and are taped.

2) Additional points available for installing a footing drainage 

system.

1) Additional points available for damp proofing below grade walls.

Renovation Note: Additional Points:

Addition Note: Section 903.2 applies only to the new 

construction portion of additions.

Renovation Note: Section 903.2 applies only to renovations that 

include slab removal and/or replacement.

903.3 Crawlspaces

903.5 Plumbing. 

903.4.1(3) The moisture content of lumber is sampled to ensure it 

does not exceed 19 % prior to the surface and/or wall cavity 

enclosure. 

903.3.1(2) Damp-proof walls are provided below finished grade. 

Joints of vapor retarder overlap a minimum of 6 inches and are 

taped.

903.4.2 Moisture content of subfloor, substrate, or concrete 

slabs is in accordance with the appropriate industry standard for 

the finish flooring to be applied. 

(2) 6-mil polyethylene sheeting, lapped a minimum of 6 inches 

and taped at the seams. 

903.4 Moisture control measures. 

903.4.1(1) Building materials with visible mold are not installed or 

are cleaned or encapsulated prior to concealment and closing.

Addition and Renovation Note: Section 903.4.1 (1) and (2) 

applies to new, reused, and salvaged materials only. It excludes 

undisturbed existing materials.

903.5.1 Plumbing distribution lines are not installed in exterior wall 

cavities.

903.5.2 Cold water pipes in unconditioned spaces are insulated to 

a minimum of R-4 with pipe insulation or other covering that 

adequately prevents condensation.

Addition Note: Section 903.5.1 applies only to the new 

construction portion of additions.

Renovation Note: Section 903.5.1 applies only to renovations 

that include exterior walls and plumbing lines or plumbing lines in 

unconditioned spaces.

1) A minimum of 50 percent of exterior wall piping is removed.

2) A minimum of 50 percent of exterior wall piping is insulated.

903.4.1(2) Walls are not enclosed (e.g. with drywall) if the 

insulation has a high moisture content. Wet insulation products 

are dry before enclosing. 

903.3.2 Crawlspace that is built as a conditioned area is sealed to 

prevent outside air infiltration and provided with conditioned air at 

a rate not less than 0.02 cfm per square foot of horizontal area 

and one of the following is implemented:

(1) A concrete slab over lapped 6 mil polyethylene or polystyrene

Addition Note: Section 903.3.2 applies only to the new 

construction portion of additions.

Renovation Note: Section 903.3.2 applies only to renovations 

that include a focused effort to convert an existing vented crawl 

space into an unvented, conditioned crawl space.

Addition Note: Section 903.4.2 applies only where new finish 

flooring is applied.

Renovation Note: Section 903.4.2 applies only where new finish 

flooring is applied. Additional points available only for correcting 

excess moisture levels in an existing subfloor and/or substrate.
358 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

5 5 P201.

2 Add'l Pts

Mandatory

0 Doesn't comply. M201 duct insulation R5.5.

2

2 0 IRC 2006 requirement -N1103.2 Ducts. 

N1103.2.1 Insulation. Supply and return 

ducts shall beinsulated to a minimum of R-8. 

Ducts in floor trusses shall be insulated to a 

minimum of R-6.Exception: Ducts or 

portions thereof located completely

inside the building thermal envelope. 

Mandatory

2 Add'l Pts

2 Add'l Pts

3 Add'l 

Points

8 Points 

n/a

2

2

Mandatory 

1 

2

Base Pts.

0 0 9 950 6 94 0 0 0 0 Ch. 10 Subtotal 

1 point per 2 

items

0 100

Mandatory

0.5 850 Allowed $150 certification fee & 5 add'l 

professional hours - total 9.

Mandatory

0.5

Mandatory

0.5

0.5

0.5

0.5

0.5

0.5

0.5

4) lead or other toxic solders

Renovation Note: The entire plumbing system between the 

connections of the water distribution and/or waste lines and the 

equipment and fixtures is replaced. This item applies if one or 

more of the following conditions exist: 

1) poor joint connections

2) thin pipe walls

3) severely reduced water flow caused by debris buildup

903.5.3 Plumbing is not installed in unconditioned spaces.

5) drain, waste, and vent system is not in accordance with the 

ICC IPC.

Addition Note: Section 903.6 applies only to the new construction 

portion of additions.

Renovation Note: Section 903.6 applies to renovations as follows: 

903.6(1) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated 

to a minimum of R-6. Outdoor air supplies to ventilation systems 

are insulated to a minimum of R-6.

903.6(2) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated 

to a minimum of R-8. Outdoor air supplies to ventilation systems 

are insulated to a minimum of R-8.

1001.1 A homeowner’s binder is provided that includes the 

following, as available and applicable:

(1) A green building program certificate or completion document.

(8) Local public transportation options (if applicable).

(9) A diagram showing the location of safety valves and controls 

for major building systems.

(2) List of green building features (can include the national green 

building checklist).

(3) Product manufacturer’s manuals or product data sheet for 

installed major equipment, fixtures and appliances. If product data 

sheet is in the binder, manufacturer’s manual shall may be 

attached to appliance in lieu of inclusion in the binder. 

(4) Information on local recycling programs.

(5) Information about available local utility programs that 

purchase a portion of energy from renewable energy providers. 

(6) Explanation of the benefits of using energy efficient lighting 

systems (e.g., compact fluorescent light bulbs, light emitting 

diode (LED)) in high usage areas.

(7) A list of practices to conserve water and energy.

(1) Additional dehumidification system(s)

1001.0 Intent. Information on the building’s use, maintenance 

and green components is provided. 

(2) Central HVAC system equipped with additional controls to 

operate in dehumidification mode.

904.3 Renovation Note: Existing unsealed combustion gas dryer 

vents related to renovations.

2) Existing unsealed combustion gas dryer vent is replaced with a 

sealed exhaust vent and ducted makeup air is provided.

1) Existing unsealed combustion gas dryer vent is replaced with a 

sealed exhaust vent.

904 Innovative Practices

904.1 A humidity monitoring system is installed with a mobile 

base unit that displays a reading of temperature and relative 

humidity at the base unit with a minimum of two remote units. 

One remote unit that is placed permanently inside the conditioned 

space in a central location, excluding attachment to exterior walls, 

and another remote unit is placed permanently outside of the 

conditioned space.

1) areas that include replacement or disturbance of HVAC ducts, 

plenums and trunk

2) in areas with specific condensation problems, remove any 

contaminated ductwork, remove or remediate mold-contaminated 

elements, and correct existing or add new insulation.

903.7 Relative Humidity. In climate zones 1A, 2A, 3A, 4A, and 

5A as defined by Figure 6(1), equipment is installed to maintain 

relative humidity (RH) at or below 60% using one of the following: 

903.9.1 In “Warm-Humid” climates as defined by Figure 6(1) 

equipment is installed to maintain Relative Humidity (RH) at or 

below 60% using one of the following:

3) insulation on the existing HVAC ducts, plenums and trunks is 

upgraded

904.2 Kitchen exhaust unit(s) that equal or exceeds 400 cfm, 

and make-up air is provided.

(10) Where frost protected shallow foundations are used, notify 

owner of precautions, including instructions not to remove or 

damage insulation when modifying landscaping, to provide heat to 

the home as required by the IRC/IBC, and to keep base materials 

CHAPTER 10: OPERATION, MAINT., AND BUILDING OWNER 

EDUCATION

Building Owners’ Manual for One- and Two-Family Dwellings

(Points awarded for mandatory and non-mandatory items)
APPENDIX B 359

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

Mandatory

on Building Operation And Maintenance for 

6

6 94 2 hours for walk-thru orientation.

(1) HVAC filters.

(2) Thermostat operation and programming.

(3) Lighting controls.

(4) Appliances and settings.

(5) Water heater settings.

(6) Fan controls.

1003 Construction, Operation and 

Maintenance Manuals and Training for MultiUnit Buildings

1

Mandatory

Mandatory

Mandatory

(4) Record drawings of the building.

0

1

Mandatory

Mandatory

Mandatory

(2) a minimum of six of the non-mandatory items listed in Section 

1001.1

Renovations Note: A building owners’ manual that includes the 

following:

(1) all mandatory items listed in Section 1001.1

(20) A narrative detailing the importance of maintenance and 

operation in retaining the attributes of a green-built building.

(18) Instructions for inspecting the building for termite infestation.

(19) Instructions for maintaining gutters and downspouts and 

importance of diverting water at least five feet away from 

foundation.

(11) A list of local service providers that offer regularly scheduled 

service and maintenance contracts to assure proper performance 

of equipment and the structure (e.g., HVAC, water heating 

equipment, sealants, caulks, gutter and downspout system, 

showe

(12) A photo record of framing with utilities installed. Photos 

taken prior to installing insulation, clearly labeled, and included as 

part of the homeowner’s binder.

(13) Maintenance checklist.

(2) A local green building program certificate as well as a copy of

the National Green Building Standard TM , as adopted by the

Adopting Entity, and the individual measures achieved by the

building.

(Points awarded per two items. Points awarded for both 

mandatory and non-mandatory items.)

a minimum of two of the non-mandatory items listed in Section 

1003.1

(1)A narrative detailing the importance of constructing a green 

building, including a list of green building attributes included in the 

building. This narrative is included in all responsible parties’ 

manuals.

(3)Warranty, operation, and maintenance instructions for all

equipment, fixtures, appliances, and finishes.

(5) A record drawing of the site including stormwater

management plans, utility lines, landscaping with common name

and genus/species of plantings.

(6) A diagram showing the location of safety valves and controls

for major building systems.

(7) A list of the type and wattage of light bulbs installed in light

fixtures.

Addition and Renovation Note : A building construction 

manual that includes the following:

(14) List of common hazardous materials often used around the 

building and instructions for proper handling and disposal of these 

materials.

(15) Information about organic pest control, fertilizers, de-icers, 

and cleaning products.

(16) Information about native landscape materials and/or those 

that have low-water requirements.

(1) A narrative detailing the importance of operating and living in a

green building. This narrative is included in all responsible parties’

manuals.

(2)(A list of practices to conserve water and energy (e.g., turning

off lights when not in use, switching the rotation of ceiling fans in

changing seasons, purchasing ENERGY STAR appliances and

electronics).

(3) Information on methods of maintaining the building’s relative

humidity in the range of 30 percent to 60 percent.

1003.2 Operations manual. Operations manuals are created and

distributed to the responsible parties in accordance with Section

1003.0. Between all of the operation manuals, five or more of the

following options are included.

all mandatory items listed in Section 1003.1

(8) A photo record of framing with utilities installed. Photos are

taken prior to installing insulation and clearly labeled.

(17) Information about methods of maintaining the building’s 

relative humidity in the range of 30-60%.

1003.0 Intent. Manuals are provided to the responsible parties 

(owner, management, tenant, and/or maintenance team) 

regarding the construction, operation, and maintenance of the 

building. Paper or digital format manuals are to include 

information regarding those aspects of the building’s construction, 

maintenance, and operation that are within the area of 

responsibilities of the respective recipient. One or more 

responsible parties are to receive a copy of all documentation for 

archival purposes.

1003.1 Building construction manual. A building construction

manual, including five or more of the following, is compiled

and distributed in accordance with Section 1003.0.

1002.1 Training of building owners. Building owners/occupants

are familiarized with the green building goals and strategies

implemented and the impacts of the occupants’ practices on the

costs of operating the building. Training is provided to the

responsible party(ies) regarding all equipment operation and

control systems. Systems include, but are not limited to, the

following:

(3) the EPA publications “Reducing Lead Hazards When 

Remodeling Your Home” and “Asbestos in Your Home: A 

Homeowner’s Guide”
360 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

269 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(6) Local public transportation options.

0

1

Mandatory

a) HVAC filters

c) ighting controls

d) appliances and settings

e) water heater settings

f) fan controls

0

(4) List of common hazardous materials often used around the

building and instructions for proper handling and disposal of these

materials.

1004

INNOVATIVE PRACTICES

(10) A procedure for educating tenants in rental properties on the

proper use, benefits, and maintenance of green building systems

including a maintenance staff notification process for improperly

functioning equipment.

Addition and Renovation Note: An operations manual that 

includes the following:

all mandatory items listed in Section 1003.2

a minimum of three of the non-mandatory items listed in Section 

1003.2

all mandatory items listed in Section 1003.3.

a minimum of three of the non-mandatory items listed in Section 

1003.3.

(8) A procedure for rental tenant occupancy turnover that 

preserves the green features.

1003.3 Maintenance manual. Maintenance manuals are created

and distributed to the responsible parties in accordance with

Section 1003.0. Between all of the maintenance manuals, five or

more of the following options are included.

(Points awarded per two items. Points awarded for both 

mandatory and non-mandatory items.)

(5) Information on local and on-site recycling and hazardous

waste disposal programs and, if applicable, building recycling and

hazardous waste handling and disposal procedures.

(7) Explanation of the benefits of using compact fluorescent light

bulbs, LEDs, or other high-efficiency lighting.

(8) Information on native landscape materials and/or those that

have low water requirements.

(9) Information on the radon mitigation system, where applicable.

(9) An outline of a formal green building training program for 

maintenance staff. Addition and Renovation Note : A maintenance manual that 

includes the following:

(6) Instructions for maintaining gutters and downspouts and the 

importance of diverting water a minimum of 5 feet away from (7) Instructions for inspecting the building for termite infestation.

b) thermostat operation and programming

(5) Information on organic pest control, fertilizers, deicers, and

cleaning products.

(4) Information on opportunities to purchase renewable energy

from local utilities or national green power providers and

information on utility and tax incentives for the installation of onsite renewable energy systems.

(2) A list of local service providers that offer regularly scheduled

service and maintenance contracts to ensure proper performance

of equipment and the structure (e.g., HVAC, water-heating

equipment, sealants, caulks, gutter and downspout system,

shower 

(3) User-friendly maintenance checklist that includes:

1004.1 (Reserved)

(1) A narrative detailing the importance of maintaining a green

building. This narrative is included in all responsible parties’

manuals.
APPENDIX B 361

APPENDIX B 

GREEN SCORING & COST

B. Akron, Ohio – Single Family Home
362 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Building Comparison D unit

Akron, OH - TC Project 14-A-08 - Single Family - D unit

ANSI-ICC-700-2008 National Green Building StandardTM

Lot 22 x 75' (approx.) 7,500 Silver Gold Emerald

Finished 1,908 Required Actual Required Actual Required Actual Required Actual

finished bsmt 972 insulated R-13 and gyp board KEY

Total conditioned 2,880 Points are Co-Dependant on at

Garage (det'd) 12.67'x 30' 360 5. Lot Design... 39 96 66 96 93 114 119 126 least one other cell

6. Resource Efficiency 45 64 79 86 113 113 146 148 Overhead Cost - Dependant on

yard 5,604 7. Energy Efficiency 30 64 60 107 100 166 120 197 subdivision size

walks & driveway 295 8. Water Efficiency 14 37 26 37 41 61 60 69

pervious 74.71% 9. Indoor Env. Quality 36 74 65 105 100 141 140 149

Base rating 11/13/09 10. Operation, Maintenance... 8 9 10 15 11 15 12 15

Additional Points 50 100 100 100

Total 222 344 406 446 558 610 697 704

Points Cost Points Cost Points Cost Points Cost

Chapter 5 96 0 96 0 114 175 126 695

Chapter 6 64 691 86 697 113 847 148 3,916

Chapter 7 64 1,175 107 2,985 166 13,010 197 23,908

Chapter 8 37 0 37 0 61 525 69 907

Chapter 9 74 140 105 274 141 945 149 1,061

Chapter 10 9 950 15 1,044 15 1,044 15 1,044

Total 344 2,956 446 5,000 610 16,546 704 31,530

0.00 1.55 2.62 8.67 16.53

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

Cost/Point 4 0 #DIV/0! 10 43

Rating 72 260 24 0 0 0 18 175 12 520 Ch. 5 Subtotal Base

Because of lead impacted soil mitigation area 

denoted then omitted A001; may have been 

grey/brownfield.

4

5 5

5

http://www.edgewoodakron.com/communityTr

ansportation.asp

3 3

3

3 New urbanism - alleys and garages in back 

with porches and sidewalks in front. 

Connection to other phases of project, 

community center, neighborhood.

3

3 Park on site. Community Center and 

continuing education classes on site. Tennis 

courts across Euclid. Grocery shopping, 

schools, and a bar nearby.

4

Lot Design

C101 - Existing Conditions & Demoliton Plan 

shows all trees being removed from Phase IV; 

subject.

5

6

4

4

2

3

1 Additional 

Point

C101 and C102 indicate slopes at Raymond 

St. singles. Construction entrance is brought 

in perpendicular to slope. 

(a) Less than 25% 2

(b) 25 to 75% 3

(c) Greater than 75% 4

5

Raymond St. SFDs, driveways, paths are 

perpendicular to slopes.

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

6

4

2 Additional 

Points

5 5 0

5

C503 shows sewer & water separate with front 

access. Stormwater separate. No electric or 

gas shown. 

5 0

5 5 0

6 6 0

6

6 520 C401. SWPP notes and details. Final grade 

indicates retention of natural hydrology. It likely 

exists.

Alley is impervious. Doesn't count toward lot 

line.

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

(4) A minimum of 75% of the roof is vegetated 

(green roof) 3

1 Additional 

Point

Cummulative

Emerald

Addition and Renovation Note: section 503.1 applies to additions 

that increase building footprint on the lot; and to renovations that 

include landscape, hardscape, and outdoor living area. 

(3) All or a percentage of roads and parking are aligned with 

natural topography to reduce cut and fill.

(2) Hydrological/soil stability study for steep slopes is completed 

and used to guide the design of all buildings on the site.

Addition and Renovation Note: Section 503.2 applies to additions 

that increase building footprint on the lot; and to renovations that 

include landscape, hardscape, and outdoor living area. 

503.2 Slope disturbance is minimized by one or more of the 

following: (Points awarded only if there are developable steep 

slopes on the lot.)

(1) All or a percentage of development on steep slopes is avoided.

(2) Utilities are installed using one or more alternative means:

(3) Limits of clearing and grading are demarcated on the plan.

503.4 Storm Water Mgmt. Storm water is managed using one or 

more of the following low impact development techniques:

(d) placement of utilities under paved surfaces instead of yards.

(c) shared utility trenches or easements

(6) Ongoing maintenance of vegetation during construction is in 

accordance with TCIA A300.

(1) A natural resources inventory is completed under the direction 

of a qualified professional. (2) A plan is implemented to conserve the elements identified by 

the resource inventory as high priority resources. (3) Items listed for protection in the resource inventory plan are 

protected under the direction of a qualified professional. (4) Basic training in tree or other natural resource protection is 

provided for onsite supervisor. (5) All tree pruning on site is conducted by a Certified Arborist.

(3) A lot is selected within one-half mile of six or more community 

resources (e.g., recreational facilities (such as pools, tennis 

courts, basketball courts), parks, grocery store, post office, place 

of worship, community center, daycare center, bank, school, 

restaurant, medical/dental office, laundromat/dry cleaner.) 

502.1 A knowledgeable team is established and team member 

roles are identified with respect to green lot design, preparation, 

503.0 Intent. The lot is designed to avoid detrimental 

environmental impacts first, minimize any unavoidable impacts, and 

mitigate for those impacts that do occur. The project is designed 

to minimize environmental impacts and to protect, restore, and 503.1 Natural resources are conserved by one or more of the 

following:

502 Project Team, Mission Statement, and Goals

(2) A greyfield lot or an EPA-recognized brownfield lot is selected.

501.2 Mass Transportation. A range of mass transportation 

choices are promoted by one or more of the following:

(1) A lot is selected within one-half mile of pedestrian access to a 

mass transit system or within five miles of a mass transit station (2) Walkways, street crossings, and entrances designed to 

promote pedestrian activity are provided. New buildings are 

connected to existing sidewalks and areas of development.

(3) Addition and Renovation Note: A renovation or addition project 

is implemented. (Points awarded for using an existing 

CH. 5 LOT DESIGN, PREPARATION, AND DEVELOPMENT

500.0 Intent. This section applies to lot development for the 

eventual construction of residential buildings, multi-unit buildings, 

or additions thereto that contain dwelling units. The buildings on 

the lot earn their own performance level by complying with the 501.1 The lot is selected to minimize environmental impact by one 

or more of the following: (1) An infill lot is selected.

ANSI National Green Building StandardTM Baseline Bronze Silver Gold

Bronze

Cost per SF ($)

Addition and Renovation Note: Section 503.4 applies to additions 

that increase the building footprint on the lot; and to renovations 

that include hardscape and outdoor living area. (To be awarded 

(4) Long-term erosion effects are reduced through the design and 

implementation of terracing, retaining walls, landscaping, and (5) Underground parking uses the natural slope for parking 

entrances.

503.3 Soil disturbance and erosion are minimized by one or 

more of the following: (Also see Section 504.3) (Points must be 

(3) All or a percentage of impervious surfaces are minimized and 

permeable materials are used for driveways, parking areas, 

walkways, and patios.

(a) tunneling instead of trenching

(b) use of smaller (low ground pressure) equipment or geomats to 

spread the weight of construction equipment

(1) Natural water and drainage features are preserved and used.

(2) A storm water management plan is developed and 

implemented that minimizes concentrated flows and simulates 

flows found in natural hydrology, e.g., vegetative swales, French 

drains, wetlands, drywells, and rain gardens.

(1) Construction activities are scheduled to minimize length of time 

that soils are exposed.
APPENDIX B 363

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

5

5 260 C403. Nice landscape plan for green space. 

L201-2 covers individual. Search did not 

indicate these to be native.

4 4 0 In 503.5(1) plan accomodate this.

(a) Lot is 0% turf 4

(b) Greater than 0% to less than 25% 3

(c) 25% to less than 50% 2

(d) 50% to 75% 1 1

5 5 0

5 5

4 4 0

3

3 0 38 trees were removed from Phase IV. Could 

have been mulched and reused, but 02230-4 

says "dispose of off-site". Change the 

language for next phase.

4 4 0

2 Additional 

Points

4 4 175

(1) Maintain wildlife habitat.

1 Addt'l Point

(2) Expand wildlife habitat.

2 Addt'l Points

6

3

3

Density based on Phase IV is 48 units on 6.14 

acres = 7.8/acre (C101-102&A001)

4 4 0

7

10

504 Lot Construction

4 4 0

3 3 0

4 4 0

4

02230-3. "Protect existing... and restore 

damaged improvements to their original 

condition." 02230-3 "Repair/replace trees and 

vegetation...damaged."

5 5 0

5

5 0 02230-2. "Locate and clearly flag trees to 

remain from damage during construction." 

However, few trees remained on the site.

5 5 0 02230-2. "No clearing until erosion & 

sedimentation control in place."

5 5 0 02230-4 "Stockpile topsoil... cover."

3

3

3 0 02370-2 "owner has authority to limit erodible 

surface area...""slopes that erode easily or will 

not be graded for 14 days [to be] temporarily 

seeded.."

3

3 0 02230-4 "stockpile surplus topsoil to allow for 

respreading..." and PM 02920-3 amend soil 

for 6% organic content per ASTM D5268".

5 0

2 Additional 

Points

505 INNOVATIVE PRACTICES

4

2 Additional 

Points

4

Sidewalks and driveways are concrete. Alley 

is pervious pavers- brick colored.

Front walks seem shaded from acer 

platonoides.

4 0 Concrete meets index - driveway and walks.

Base Pts. 57 0 7 691 22 6 27 150 35 3,069 Ch. 6 Subtotal 

Cost/Point

15

12 1,908

9 9

6

Mandatory

1 Addt'l Point

3 Addt'l Point

6 Add'l Points

1 Addt'l Point

3 pts per 

system (9 pts 

max)

3 0 6 0 roof truss @24" oc for base. Incorporate 

single top plate and 24" spacing. Design cost 

vs. mat'l savings to net to zero.

3 3 0

CHAPTER 6: RESOURCE EFFICIENCY

(1) Less than or equal to 1,000 square feet

(2) Less than or equal to 1,500 square feet

(3) Less than or equal to 2,000 square feet

(4) Less than or equal to 2,500 square feet

(2) Light colored hardscaping: Horizontal hardscaping materials 

are installed with a solar reflectance index of 29 or greater. 

601.1 Conditioned floor area, as defined by ICC IRC calculated 

in accordance with ANSI Z765, is limited. Dwelling unit size is to 

601 Quality of Construction Materials and Waste

601.0 Intent. Design and construction practices that minimize the 

environmental impact of the building materials are incorporated; 

505.0 Intent. Innovative lot design, preparation and development 

practices are used to enhance environmental performance. 505.1 Driveways or parking areas are shared. Waivers or variances 

from local development regulations are obtained to implement such 

505.2 Heat Island Mitigation. Any combination of the following 

strategies are provided for a minimum of 50% of the horizontal 

surface area of the hardscape: (1) Shading of hardscaping: Shade from existing or new vegetation 

is provided (within five years) or from trellises. Shade of 

hardscaping is to be measured on the summer solstice at noon.

Addition and Renovation Note: Section 505.1 applies only 

where existing impervious driveway and parking area(s) are 

reduced. 

(8) Utilities are installed using one or more alternative means such 

as: tunneling instead of trenching, use of smaller equipment, use of 5 low ground pressure equipment, use of geomats, shared utility Addition and Renovation Note: Additional points for Section 504.3 

apply only where onsite construction staging and storage areas are 

planned and located to avoid soil and vegetation disturbance in 

(5) Greater than 4,000 square feet (373 m2)

Multi-Unit Building Note: For a multi-unit building, use a 

weighted average of the individual unit sizes in qualifying for 

601.2 Material Usage. Building-code-compliant structural 

systems or advanced framing techniques that optimize material 

usage are implemented. Points awarded for each system or 

framing technique implemented.

For every 100 square feet over 4,000 sf, one point is to be 

added to Table 303, category 7 for each performance level. 

Addition Note: Additions more than 75% of existing building. 

Section 601.1 does not apply to additions with an area of more than 

503.9 Density. The average density on a net developable area 

basis is: 

(2) 14 to less than 21 dwelling units per acre

(2) Trenching, significant changes in grade, and compaction of 

soil and critical root zones in “tree save” areas are avoided.

(3) Sediment and erosion controls are installed and maintained in 

accordance with the storm water pollution prevention plan 

(SWPPP), where required.

(3) Damage to designated existing trees and vegetation is 

mitigated during construction through pruning, root pruning, 

fertilizing, and watering.

504.3 Soil disturbance and erosion. Onsite soil disturbance and 

erosion are minimized by one or more of the following: (also see (1) Limits of clearing and grading are staked out.

(2) “No disturbance” zones are created using fencing or flagging to 

protect vegetation and sensitive areas from construction activity. 

504.0 Intent. Environmental impact during construction is avoided 

to the extent possible; impacts that do occur are minimized, and 504.1 Onsite supervision and coordination is provided during 

clearing, grading, trenching, paving, and installation of utilities to 504.2 Trees and vegetation. Designated trees and vegetation are 

preserved by one or more of the following: (1) Fencing or equivalent to protect trees and other vegetation is 

installed.

(4) Topsoil is stockpiled and stabilized for later use to establish 

landscape plantings. (5) Soil compaction from construction equipment is reduced by 

distributing the weight of the equipment over a larger area (laying (6) Disturbed areas that are complete or to be left unworked for 

greater than 21 days are stabilized within 14 days using methods 

as recommended by the EPA or in the approved storm water 

pollution prevention plan (SWPPP), where required.

(7) Soil is improved with organic amendments and mulch.

(4) Plants with similar watering needs are grouped (hydrozoning).

(5) Species and locations for tree planting are identified that will 

provide summer shading of streets, parking areas, and buildings to (6) Vegetative wind breaks or channels are designed as 

appropriate for local conditions.

(1) 7 to less than 14 dwelling units per acre (4047 m2)

Addition and Renovation Note: Section 503.6 applies to additions 

that increase building footprint on the lot; and to renovations that 

503.8 Environmentally Sensitive Areas.

(2) Compromised Environmentally Sensitive Areas are mitigated or 

restored.

(8) An integrated pest management plan to minimize chemical use 

in pesticides and fertilizers is developed.

503.5 Landscape plan is developed to limit water and energy use 

while preserving or enhancing the natural environment. (1) A plan is formulated to restore or enhance natural vegetation 

that is cleared during construction. Landscaping is phased to 

coincide with achievement of final grades to ensure denuded areas 

are quickly vegetated.

(2) Turf grass species, other vegetation, and trees are selected 

that are native or regionally appropriate for local growing conditions.

(3) 21 or greater dwelling units per acre

Addition and Renovation Note: Section 503.5 applies to additions 

that address protection and renovation of existing vegetation during 

and after construction and the preservation or enhancement of the 

(3) A percentage or all turf areas are limited. 

(7) Onsite tree trimmings or stump grinding of regionally 

appropriate trees are used to provide protective mulch during 

construction and cleared trees are recycled as saw lumber or pulp 

wood.

503.6 Wildlife habitat. Measures are planned that will support 

wildlife habitat.

503.7 Mixed use development is incorporated.

(1) Environmentally Sensitive Areas are avoided.

Additions less than or equal to 75% of existing building. 

Where the addition area is less than or equal to 75 percent of the (1) The existing structure is 50% to 75% of total building or 

dwelling unit area.

(2) The existing structure is 76% to 99% of total building or 

dwelling unit area.

Renovation Note: When renovations increase the total existing 

building or dwelling unit area by 1 percent or less, points are (a) The total area of the existing building or dwelling unit is less 

than or equal to 2500 sf.

(a) The total area of the existing building or dwelling unit is greater 

than 2500 sf.

601.3 Building dimensions and layouts are designed to reduce 

material cuts and waste. (1) When used for at least 80% of floor area
364 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

3

3

3

1

4 4 1,040 Allowed 8 prof hours for architectural revision.

(1) Floor system. 

4

2nd floor is open web trusses,12" deep, at 16" 

oc. A501& S101. First floor is 2x10.

(2) Wall system. 

4

4 

0

9-1 1/8" walls aren't precuts. At 

emerald incorporate wall panels. Cost should 

be net zero

(3) Roof system. 4 4 A501 trusses at 24" oc.

13

13

Max 8 

points

(1)first stacked story 4 4

(2) for each additional story 2

Max 12 

points

5

2

PM 07460-2 CVPVC trim is pre-finished. 

Porch soffits prefinished aluminum. (A006 

shows vinyl soffit.) Pm 06200-2 broadens trim 

to Hardie, Certainteed and Techtrim. Don't 

know what was used.

5 PM 8565-2 Windows and decorative louvre 

are vinyl. 08250-2 Doors are fiberglass. No 

skylights.

5 0 Fiber cement sided walls. Concrete 

foundaton. Use architectural revision to spec 

siding that meets criteria.

3

3 1040 Install FPS foundation at walkout wall until 

grade changes enough to have small frost 

footing . Net should be a savings. 8 hrs for 

engineer.

4

(1) Adobe

(2) Concrete/Masonry

(3) Logs 

(4) Rammed earth

Maximum 

number of 

points 5 

(1) Installing a porch roof or awning.

(2) Extending the roof overhang.

(3) Recessing the exterior door.

Main entrance door 3 3

Additional covered door assembly 1 2

4

Inches Rainfall*

Eave Overhang 

(Inches)

Rake Overhang 

(Inches)

36.2" average annual. 16" overhangs.

Less than 20 12 12

21 to 40 12 12 4

41 to 70 18 12

More than 70 24 12

0

1

Mandatory

0 Not met. Shown on wall section A501 for slab 

house, only.

4

4 691 There aren't any good details of an inground 

basement. Added interior draintile as per detail 

located on town plan.

0

2 Additional 

Points

3 3 A501 details drip edge. Not in roofing specs. 

07311-3. 

4

4 0 07600-3. 07600-2 implies that downspout 

drainage boots will serve as transition to storm 

drain tie-in. 

1 Add'l Point

Mandatory 0 Not met. 

Mandatory 0 

Add'l Points

2 Add'l Points 

4 Moderate to heavy zone.

 0 Add'l Points

1 Add'l Point 

3 Add'l Points

2

4

6

Mandatory 0 Met. A502

Mandatory 0 

Add'l Points

Mandatory 0 

Add'l Points

Mandatory

0 Met. PM 07311-3 "Apply waterproofing 

underlayment at eaves...at least 36" inside 

exterior wall line." Detailed on roof plan.

Side door, North side unto deck, has roof from 

cantilevered second deck over. Basement w/o 

door has deck for shelter.

601.5 Pre-cut or pre-assembled components, or panelized or 

precast assemblies are utilized for 90% for the following system or 

(4) modular construction for the entire building located above 

grade.

602.10 In areas where there has been a history of ice forming 

along the eaves causing a backup of water, an ice barrier is 

installed at roof eaves and is extended at least 24” inside the 

exterior wall line of the building, in accordance with the IRC/IBC.

601.6 Stories above grade are stacked, such as in 1 1/2 and 2 

story or greater structures. The area of the upper story shall be at 

least 50% of the area of the story below, based on areas with a 

(2) In areas of moderate to heavy termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, (3) In areas of very heavy termite infestation probability (as defined 

by Figure 6(3)) for the foundation, all structural walls, floors, 602.9 Where required by the IRC/IBC, a water-resistive barrier 

and/or drainage plane system is installed behind exterior veneer Addition Note: Section 602.9 applies to the new construction 

portion of additions.

Renovation Note: Section 602.9 applies to renovations that 

include exterior veneer and/or siding replacement.

602.8 Termite-resistant materials are used as follows: 

(1) In areas of slight to moderate termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, 

(1) new non-chemical termite barrier is provided

(2) existing chemical barrier is removed and replaced with a nonchemical barrier

Addition Note: Section 602.6 applies only to additions that 

increase the footprint of the building.

Renovation Note: The additional points for Section 602.6 apply 

only to renovations.

Addition Note: Section 602.7 applies only to the new construction 

portion of additions.

Renovation Note: The additional points for section 602.7 applies 

only to renovations that alter the existing roof.

602.7 Termite barrier. Continuous, physical,foundation termite 

barrier used with or without low toxicity treatment is installed in 

Renovation Note: Section 602.5 applies only to renovations.

Addition Note: Section 602.3.2 applies to the new construction 

portion of additions. 

involve the demolition/reconfiguration of exterior walls and/or 

modification of the existing foundation drainage system. 

602.6 Finish grade at all sides of building is sloped to provide a 

minimum of 6 inches of fall within 10 feet of the edge of the 

602.3.2 Interior and exterior foundation perimeter drains are 

installed and sloped to discharge to daylight, dry well, or sump pit.

602.4 Drip edge is installed at eaves and gable roof edges.

602.5 A gutter and downspout system with extensions, or splash 

blocks and effective grading, are provided to carry water at least 5 

feet away from perimeter foundation walls. 

602.3 Foundation Drainage

602.3.1 Where required by the IRC/IBC for habitable and usable 

spaces below grade, exterior drain tile is installed.

Addition Note: Section 602.2 applies to the new construction 

portion of additions. Renovation Note: Section 602.2 applies to renovations that alter 

the existing roof.

Table 602.2

Minimum Roof Overhang for One- & Two-Story Buildings

602.2 Roof overhangs, based on inches of rainfall in Table 602.2, 

are provided over at least 90% of exterior walls to protect the 

602.0 Intent. Design and construction practices are implemented 

that enhance the durability of materials and reduce in-service 602.1 Entries at exterior door assemblies, inclusive of side lights, 

are covered by one of the following methods below to protect the 

building from the effects of precipitation and solar radiation. A 

projection factor of at least 0.375 is provided. Eastern and western 

602 Enhanced Durability and Reduced Maintenance

601.8 Foundations such as frost-protected shallow foundations, 

pier and pad foundations, post foundations and other similar 

foundation types are designed and constructed.

601.9 One or more of the following above grade wall systems that 

provide sufficient structural and thermal characteristics are used 

(c) Window, skylight, and door assemblies not requiring paint or 

stain on exterior and/or interior surfaces.

(d) Wall coverings or systems not requiring paint or stain or other 

type of finishing application.

601.7 Site applied finishing materials. Building materials or 

assemblies that do not require additional site applied material for 

finishing are utilized. 

(a) Pigmented, stamped, decorative, or final finish concrete or 

masonry.

(1) 90% or more of the installed material or assembly listed below:

(2) 50% to less than 90% of the installed building material or 

assembly listed below:

(b) Trim not requiring paint or stain.

(5) manufactured home construction for the entire building located 

above grade.

(3) When used for at least 80% of roof area 

(2) When used for at least 80% of wall area

(4) When used for at least 80% of cladding or siding area

(5) When used for at least 80% of penetrations or trim area

601.4 Detailed framing or structural plans, material quantity lists 

and onsite cut lists for framing, structural materials, and sheathing 

materials are provided.
APPENDIX B 365

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

(1) Rubberized coating, or

(2) Drainage mat.

0 Additional 

Points

2 Additional 

Points

6 6 0 Incorporate with plan revision.

(2) Roof valleys.

3 Shingle color not stated.

(2) A green (landscaped) roof system.

1 Add'l Point 

3 3 75 

(2) Compost facility provided on-site. 3 3 75 

 1 

(Max 12 points)

3

4 4 6 Based on 48 units.

Points per Table 

604.1

Material Percentage Recycled Content Per 2 Minor Per 2 Major

25% - 50% 1 2 2 0 carpet padding complies & stainless steel

50% - 75% 2 4

75% 3 6 6 0 cellulose insulation & gyp board

This is important in view of possible 

contaminated soil.

6 6 989 2 people in builder's staff 1 day to develop.

Mandatory 2 

Additional 

Points

7 7 0

Mandatory 0 

Add'l Points

Max 6

3 3 0

1 2 0

Max 8 0

0

(b) engineered wood 0

(c) bamboo

(d) cotton

(e) cork

(f) straw

3 2 0 LVL headers & interior trim

6 6 0 OSB and studs

1 

(2 pts max)

Cabinets and cellulose insulation

(a) AFF American Tree Farm System®

3 3 0 Cabinets are KCMA

4

6 pts. max. 6 0 Specify OSB to come from complying mill. 

Locate add'l sources that comply

Max 9 points

LVL headers and floor girder.

(3) Roof or floor trusses. 9 0 Roof and floor trusses.

10 points max.

2 2 0 stone for driveway base

2 8 0 osb,steel, siding, deck & stud lumber 

Max 15 points

(1) Per product/system comparison 3

(2) Whole building LCA analysis 15

Max 10 points

Base Pts. 42 0 22 1,175 43 1,810 59 10,025 31 10,897 Ch. 7 Subtotal 

Use 703 path.

602.11 Enhanced foundation waterproofing is installed:

(c) Forest Stewardship Council (FSC)

Recycled Content

(g) natural fiber products made from crops (soy or corn-based)

(h) products with the minimum biobased contents of the USDA 7 

CFR Part 2902 (Approx. 7%)

606.1(3) For each additional biobased material used for more than 

.5% of the project’s projected building material cost. 

Addition and Renovation Note: The construction waste 

managment plan includes information on the proper handling and 

disposal of hazardous wastes.

Addition and Renovation Note: All waste classified as 

hazardous waste is properly handled and disposed of. The weight 

of this material is exempted from landfill diversion when Section 

606 Renewable Materials

(a) Materials are ground or otherwise safely applied onsite as soil 

amendment or fill. At least 50% (by weight) of construction and 

605.2 Onsite recycling measures following applicable regulations 

and codes are implemented, such as the following:

606.0 Intent. Building materials derived from renewable resources 

are used. 606.1 The following biobased products are used. (Note: 606.1 

and 606.2 denote % of project mat'l cost req'd.) (a) certified solid wood in accordance with Section 606.2

Recycled Construction Waste 

605.0 Intent. Waste generated during construction is recycled. 

Note: All waste classified as hazardous shall be properly handled 

and disposed. (Points not awarded for hazardous waste 

removal.) 605.1 A Construction Waste Management Plan is developed, 

implemented, and posted at the jobsite with a goal of recycling or 

salvaging a minimum of 50% (by weight) of construction and land-

(b) Other methods approved by the NAHB Research Center (the 

Adopting Entity).

605.3 Recycled Construction materials: Construction materials 

(e.g., wood, cardboard, metals, drywall, plastic, asphalt roofing (1) A minimum of two types of materials are recycled.

604.1 Building materials with recycled content are used for at least 

two minor and/or two major components of the building.(NOTE: 

Does not specify PConsumer. Implication is that max. allowable is Table 604.1

603.3 Scrap Materials. Facilitation for sorting and reuse of scrap 

building material (e.g. provide a central storage area or dedicated 604 Recycled-Content Building Materials

603.1 Existing buildings and structures are reused, modified or 

deconstructed in lieu of demolition. (One point awarded for every 

200 sq. ft., 18.5m2, of floor area.)

603.2 Reclaimed and/or salvaged materials and components are 

used.Total material and labor cost of salvaged materials shall equal 

602.14 Recycling. Occupant recycling is facilitated by one or more 

of the following methods:

Renovation Note: Section 602.13 applies to renovations that 

include roof replacement.

(1) A built-in collection space in each kitchen and an 

aggregation/pick-up space in a garage, covered outdoor space or 

603 Reused or Salvaged Materials 

603.0 Intent. Practices that reuse or modify existing structures, 

salvage materials for other uses, or use salvaged materials in 

602.13 Roof Surfaces. A minimum of 90% of roof surfaces are 

constructed of one or both of the following: (1) Products which meet the requirements of the ENERGY 

STAR® cool roof certification or equivalent.

(4) At roof-to-wall intersection and at roof-to-chimney intersections.

(5) A drip cap is provided above windows and doors that are not 

Flashed or protected by covering per Section 602.1.

602.12 Flashing details are shown on plans and flashing is 

installed at all of the following locations, as applicable: (1) Around exterior fenestrations, skylights and doors.

(3) Deck/balcony to building intersections.

Addition Note: Section 602.11 applies to the new construction 

portion of additions.

Renovation Note: Section 602.11 applies to renovations that 

involve the demolition/reconfiguration of exterior walls, modification 

of the foundation wall, or an effort to improve foundation 

608 Indigenous Materials

(d) Program for Endorsement of Forest Certification Systems 

(PEFC) (e) Sustainable Forestry Initiative Program (SFI)

(6) Other product programs mutually recognized by PEFC

(2) Engineered wood or engineered steel products.

606.2(2) Where a minimum of two certified wood-based products 

are used in major elements of the building, such as walls, floors, or 

(i) other biobased materials with a minimum of 50 percent biobased 

content (by weight or volume). 606.1(1) At least two types of biobased materials are used, each 

for more than .5% of the project’s projected building material cost. 606.1(2) At least two types of biobased materials are used, each 

for more than 1% of the project’s projected building material cost. 

(1) Lighter, thinner brick with bed depth less than 3 inches, brick 

with coring above 25%, or both.

607 Resource-Efficient Materials

607.1 Products containing fewer materials are used to achieve the 

same end-use requirements as conventional products, including 

606.2 Wood-based products are certified to the requirements of 

one of the following recognized product programs: 

(b) Canadian Standards Association’s Sustainable Forest 

Management System Standards (CAN/CSA Z809)

606.3 Manufacturing Energy. Materials are used for major 

components of the building that are manufactured using a 

minimum of 33% of the primary manufacturing process energy 

606.2(1) Where a minimum of two certified wood-based products 

are used for minor elements of the building, such as all trim, 

610.1 Manufacturer's environmental managment system 

concepts. Product manufacturer’s operations and business 

practices include environmental management system concepts and 

701.1 Mandatory requirements. The building shall comply with either Section 702 

(Performance Path) or Section 703 (Prescriptive Path). Items listed as “Mandatory” 

in Section 701.4 apply to both the Performance and Prescriptive Paths.

609 Life Cycle Analysis

CHAPTER 7: ENERGY EFFICIENCY

608.1 Indigenous materials are used for major elements of the 

building. 

609.1 A more environmentally preferable product or assembly for 

an application based upon the use of a Life Cycle Assessment 

(LCA) tool compliant with ISO 14044 or other recognized 

610 Innovative Practices

(1) one type of material.

(2) For each additional material.

(2) for each additional recycled material.
366 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory Practices

Mandatory

0 520 Cost for 4 hours prof to review.

701.4.1 HVAC SYSTEMS

Mandatory

0 Does not comply. Furnaces are sized at either 

60 or 100k btu in. No Manual J spec.

Mandatory 0 

Add'l Points

 2 Add'l 

Points

Mandatory

0 n/a

701.4.2 DUCT SYSTEM

Mandatory

0 Specified to max. leakage of 6% and sealing. 

Complies.

Mandatory 0 

Add'l Points

 0 Add'l Points

(a) 25% to less than 50% 1 Add'l Pt 

(b) 50% to less than 75% 2 Add'l Pt 

(c) 75% to less than 100% 3 Add'l Pt 

(d) 100% 4 Add'l Pt 

5 Add'l Pt 

Mandatory

0 Complies. Ducted supplies brought up 

outside wall. M204

Mandatory 0 

Add'l Pts

1 Add'l Pt 

2 Add'l Pt 

Mandatory

0 PM 15250-2. Complies

Mandatory

0 Doesn't comply. Should be covered in PM.

Mandatory 0 

Add'l Points

 2 Add'l Pts

Mandatory

0 Not met. Sections do not detail these areas 

well. PM 07210-2 C.Assembly R-values lacks 

a value for floors.

701.4.2.2 Building cavities are not used as supply ducts. 

Addition Note: Section 701.4.2.2 is mandatory for new 

construction portion of additions.

Addition and Renovation Note: Section 701.4.3.1(1) is 

mandatory for the new construction portion of additions and 

renovations.

(2) Shafts (duct shaft, piping shaft/penetrations, flue shaft.) 

Openings to unconditioned space are fully sealed with solid 

blocking or flashing and any remaining gaps are sealed with caulk 

or foam. Fire-rated collars and caulking are installed where 

required.

(1) Floors (Including insulated floors above garages and 

cantilevered floors)

Renovation Note: Existing openings to unconditioned spaces are 

sealed.

701.3 A review by the Adopting Entity or designated third party 

shall be conducted to verify design and compliance with Chapter 7. 

(1) Insulation shall be installed in accordance with the 

manufacturer’s instructions or local code, as applicable.

701.4.3.2 FLOOR / FOUNDATION / CRAWLSPACE

Addition and Renovation Note: Section 701.4.2.1 applies only 

to the new portions of a duct system, except as follows:

(1) For renovations of existing buildings, the entire duct system, 

both existing and new, is permitted to be sealed with mastic or an 

aerosol spray-applied duct sealant.

(2) For existing duct systems, where the existing duct system is not 

in accordance with Section 701.4.2.1, the overall duct system 

leakage is reduced by using any approved methods in Section 

701.4.2.1, or aerosol spray applied duct sealant. Additional p

701.4.3 INSULATION and AIR SEALING

(1) the demolition, reconfiguration, or addition of interior walls or a 

modification in the duct system of the building

(2) a focused effort to solve the use of building cavities as supply 

ducts

(e) the entire system is upgraded in accordance with Section 

704.6.2.2

Addition Note: Section 701, including mandatory items, applies 

only to the new construction portion of additions.

701.1.3 Alternative Bronze Level Compliance. As an alternative, any building that 

qualifies as an ENERGY STAR qualified home or equivalent achieves the Bronze 

Level for Chapter 7.

701.4.2.1 Ducts are sealed with tape complying with UL 181, 

mastic, gaskets, or an approved system as required by the ICC 

IRC (Section M1601.3.1, or ICC IMC Section 603.9) to reduce 

leakage.

Renovation Note: Section 701.4.2.2 applies to renovations that 

involve one of the following:

701.2 Emerald Level Points. The Performance Path shall be used to achieve to 

the Emerald Level.

701.4.1.1 Space heating and cooling system/equipment shall be 

sized according to heating and cooling loads calculated using 

ACCA Manual J or equivalent. 

701.4.1.2 Where installed, as a primary heat source in the building, 

radiant or hydronic space heating system is designed using 

industry-approved guidelines (e.g. ACCA Manual J, GAMA H-22, 

or an accredited design professional's and manufacturer's 

recommen

Addition and Renovation Note: Section 701.4.1.1 is mandatory 

for both additions and renovations where new HVAC equipment is 

installed.

Addition and Renovation Note: The additional points for section 

701.4.1.1 apply to additions or renovations that include one or both 

of the following: 

(1) a change in heating and cooling loads

(2) a replacement and/or addition of mechanical equipment

701.1.2 Minimum Prescriptive Path Requirements. A building complying with 

section 703 shall obtain a minimum of 30 points from Section 703, and shall include 

a minimum of two practices from Section 704. 

701.4.3.1 GENERAL Insulation and air sealing is in accordance 

with the following: 

(2) For the Green Remodel Path (Section 305.5), the existing 

building or dwelling unit shall comply with Table 305.5)

(1) For the Green Building Path (Section 305.4), the existing 

building or dwelling unit shall comply with the mandatory 

renovation/addition practices and shall achieve the points indicated 

in Table 303.

701.1.1 Minimum Performance Path Requirements. A building complying with 

Section 702 shall exceed the baseline minimum performance required by the IECC 

by 15%, and shall include a minimum of two practices from Section 704.

Renovation Note: Section 701 applies to existing buildings as 

follows:
APPENDIX B 367

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2 Add'l Pts

Mandatory

0 n/a 

2

2

701.4.3.3 WALLS 

Mandatory

0 Doesn't comply. No spec for air sealing.

 1 Add'l Pt

Mandatory

0 Doesn't comply. No spec for air sealing.

 1 Add'l Pt

Mandatory

0 Doesn't comply. No spec.

0 Doesn't comply. No spec.

 1 Add'l Pt

Mandatory

0 n/a

 1 Add'l Pt

Mandatory

0 Doesn't comply. No spec.

Mandatory

0 Doesn't comply. Detail A009.

 1 Add'l Pt

Mandatory

0 Doesn't comply. May be two recessed fixtures 

in 2nd floor baths. No spec.

 1 Add'l Pt

Mandatory

0 A501 no baffle shown.

 2 Add'l Pts

701.4.4 FENESTRATION

Mandatory

Complies

Table 701.4.4.1

Fenestration Specifications

Climate Zones U-Factor SHGC

1 and 2 0.65 0.4

3 0.4 0.4

4 to 8 0.35 Any 0 u=.30; shgc=.31

1 to 3 0.75 0.4

4 to 8 0.6 Any

702 Performance Path

Mandatory

Comply.

(1) 15%

30 30 655 (30) Brought ducts inside unit and tightened to 

12%. (8% leakage/sf)

(2) 30%

60

60 1,810 (60) R-49 ceiling; 2x6 at 24"; 4.5ACH50; 6% duct 

leakage;92% gas tankless water heater

(3) 50%

100 100 9,803 (100) closed loop solar; 2.6ACH50;R-5 sheathing.

(4) 60%

120

120 10,601 Raised heel R-60; R-10 sheathing; .23/.35 

windows; 2ACH50; 96% heat; thermatru doors 

0.18

 0 Add'l Pts

(3) Eave vents. Where ceiling/attic assemblies or designs have 

eave vents, baffles, or other means shall be utilized to minimize air 

movement into or under the insulation.

701.4.4.1 The NFRC-certified U-factor and SHGC windows, 

exterior doors, skylights, and tubular daylighting devices (TDDs) 

are in accordance with ENERGY STAR, or equivalent, or Table 

701.4.4.1. Decorative fenestration elements with a maximum area 

of 15 square feet or 10 percent of the total glazing area, whichever 

is less, are not required to comply with this practice. 

Skylights and TDDs 

(max. certified ratings)

Windows and Exterior Doors 

(maximum certified ratings)

702.2 Energy efficiency features are implemented to achieve 

energy cost performance that exceeds ICC IECC by the following. 

A documented analysis using software in accordance with ICC 

IECC, Section 404, or ICC IECC Section 506.2 through 506.5, 

applied as defined in the ICC IECC, is required.

Renovation Note: Provide blocking or baffle at eaves to ensure 

ventilation over attic iinsulation.

702.1 Points from Section 702 (Performance Path) shall not be 

combined with points from Section 703 (Prescriptive Path).

(2) Crawlspace. Where insulated, crawlspace wall insulation is 

permanently attached to the walls. Exposed earth in unvented 

crawlspaces is covered with continuous vapor retarder with 

overlapping joints taped or masticed. 

(1) Windows and Doors. Caulking, gasketing, adhesive flashing 

tape, foam sealant, or weatherstripping is installed forming a 

complete air barrier. 

Renovation Note: In accordance with Section 701.4.3.2(2):

(1) existing uninsulated crawlspace is insulated.

(2) exposed earth in existing crawlspace is covered.

(4) Skylights and kneewalls. Skylight shafts and knee walls are 

insulated to the same level as the exterior walls.

Renovation Note: Existing perimeter sill plates are sealed.

(a) Insulation is installed to maintain permanent contact with the 

underside of the subfloor decking, enveloping any attached 

ductwork within the thermal envelope without compression or air 

gaps in the insulation. This practice does not apply to ducts or 

other mechanical equipment that are adjacent to the underside of 

the subfloor.

Renovation Note: Insulate existing uninsulated floors.

Renovation Note: Existing windows and doors are weatherstripped and sealed.

(b) Batt and loose-fill insulation is held in place by permanent 

attachments or systems in accordance with the manufacturer’s 

instructions.

(5) Exterior Architectural features. Code required building 

envelope insulation and air sealing is not disrupted at exterior 

architectural features such as stairs and decks. 

Renovation Note: Existing attic access, knee wall door, or dropdown stairs are insulated.

(2) Band Joist and Rim Joists. Band and rim joists are insulated 

and air sealed.

701.4.3.4 CEILINGS AND ATTICS

Renovation Note: Existing uninsulated rim and/or band joists are 

insulated.

(a) Sill sealer, or other material that will expand and contract, shall 

be installed between foundation and sill plate.

(b) Caulk or the equivalent is installed to seal the bottom plate of 

exterior walls.

(3) Between Foundation and Sill Plate Bottom Plate

Renovation Note: Existing skylight shafts and kneewalls are 

insulated.

(1) Attic access (except unvented attics). Attic access, knee 

wall door, or drop down stair is covered with insulation and 

gasketed. Knee wall door is insulated unit or is covered with 

insulation.

(2) Recessed Lighting. Recessed light fixtures that penetrate the 

thermal envelope are airtight, IC rated, and sealed with gasket, 

caulk, or foam.

Renovation Note: Replace existing recessed lights that penetrate 

the thermal envelope with airtight, IC-rated recessed light fixtures 

that are sealed to drywall with gasket, caulk, or foam. (Additional 

point per fixture)

Renovation Note: Application of Section 702.2: A baseline 

energy use measurement is calculated for the existing building. 

(Based on the reduction in whole building energy use, points are 

given for every increase in efficiency in accordance with Section
368 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

703 Prescriptive Path 

Points per Table 

703.1.1

Sect. 703 pts. 20

Practices 704 6

Zone 2 Zone 3

10% UA improvement 10 points 12 points

20% UA improvement 20 points 24 points

Zone 4 Zone 5-6

10% UA improvement 14 points 16 points 0

20% UA improvement 28 points 32 points

Zone 7-8

10% UA improvement 18 points

20% UA improvement 36 points

 0 Add'l Pts

Mandatory 

0 Add'l Points

15

30

45

Points per Table 

703.1.2

Grade Points

1 15

2 10

3 0

(ii) Floor insulation over vented or ambient conditions is enclosed 

on six sides.

(c) Floor insulation over unconditioned basements is not required 

to be enclosed on six sides. 

(d) Ceiling insulation is not required to be enclosed when the 

insulation is installed in complete contact with the drywall or 

plywood surfaces it is intended to insulate.

(b) In conditioned basement or crawlspace the following apply:

(i) insulation is installed in complete contact with the subfloor 

surfaces. 

(a) A maximum of 2% of the surface area of insulation is missing. 

Compression or incomplete fill amounts to 10 percent or less, 

presuming the compression or fill is a minimum of 70 percent of 

the intended fill thickness.

(h) “Grade 1” insulation must meet or exceed all requirements of 

“Grade 2” insulation.

703.1.2.3 Grade 2 installation is in accordance with the following:

(g) ICFs, SIPs, and other wall systems that provide integral 

insulation comply with “Grade 1” insulation installation 

requirements where properly installed. 

(d) Cavity insulation is split, installed, and/or fitted tightly around 

wiring and other services.

(e) Exterior sheathing is not visible from the interior through gaps 

in the cavity insulation.

(f) Faced batt insulation is permitted to have side-stapled tabs, 

provided the tabs are stapled neatly with no buckling, and provided 

the batt is only compressed at the edges of each cavity, to the 

depth of the tab itself.

(c) Exterior rigid insulation shall have substantial contact with the 

structural framing members or sheathing materials, and is tightly 

fitted at joints.

(c) Wall cavity insulation is enclosed on all six sides, and is in 

substantial contact with the sheathing material on one or more 

sides (interior or exterior) of the cavity.

(a) Insulation uniformly fills each cavity side-to-side and top-tobottom, without substantial gaps or voids around obstructions 

(such as blocking or bridging).

703.1.2.2 Grade 1 installation in accordance with the following: 

(b) Compression or incomplete fill amounts to no more than 2% or 

less, presuming the compression or fill is at least 70% of the 

intended fill thickness; occasional small gaps are acceptable.

(a) Grades apply to cavity fill insulation, continuous rigid insulation, 

and any other field-installed insulation products. Grading applies to 

ceilings, walls, rim joists, conditioned basements and crawlspaces, 

except as specifically noted. Inspection shall be conducted before 

insulation is covered.

(b) Insulation is installed in accordance with the manufacturer’s 

instructions and/or industry standards.

703.1.2.1 Both Grade 1 and Grade 2 installations are in 

accordance with the following:

(2) If the existing overall thermal performance is below the 

requirements of ICC IECC, Section 402.1.4, the overall thermal 

performance of the whole building thermal envelope UA is 

improved a minimum of the following:

Insulation Installation Grades

(a) 15 percent

(b) 30 percent

(a) 45 percent, or meets the requirement of ICC IECC, Section 

402.1.4

Table 703.1.2

703.1.2 The insulation installation is graded by a third party and is 

in accordance with Sections 703.1.2.1, 703.1.2.2, 703.1.2.3, and 

/or 703.1.2.4, as applicable. (Points not awarded in this section 

if already awarded under Section 703.1.1)

Renovation Note: The existing whole building thermal envelope 

UA is evaluated. One of the following is selected based on the 

evaluation.

Total Building Thermal Envelope UA

(1) If the overall thermal performance meets or exceeds the 

requirements of ICC IECC; Section 402.1.4; Section 703.1.1 

applies to the renovation.

Table 703.1.1

Climate Zone

Addition Note: Section 703.1.1 applies to the new construction 

portion of additions.

703.1 Building envelope. Where the total building thermal 

envelope UA is less than required by ICC IECC, Section 402.1.4, 

the total building thermal envelope UA is in accordance with Table 

703.1.1. Where insulation is used to achieve these percentages, a 

third-party grading of the installation as achieving Grade 1 is 

required. A documented analysis is performed using RES Check 

version 4.0.1 or later, or equivalent, based on a comparison to the 

ICC IECC, IRC, or IBC.
APPENDIX B 369

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Points per 

Table 703.1.3

Table 703.1.3

Exterior Mass Walls

3 in. to <6 in. 6 in.

Climate Zones 1, 2, 3, 4 except marine, and 5 

dry. 4 6

Climate Zones 4 marine, 5 except dry, and 6. 3 5

Climate Zones 7 and 8 0 0

703.2 Insulation & Air Sealing

15

(2) No third party verification performed. 3 3 (3)

703.2.1.1 GENERAL

(d) Air impermeable insulation.

703.2.1.1.2 Plumbing and Wiring 

703.2.1.3 WALLS

703.2.1.4 CEILINGS and ATTICS

 0 Add'l Pts

 1 Add'l Pt

(2) Batt insulation is split or cut to fit around wiring and plumbing.

(3) Sprayed insulation is installed to encapsulate pipes where the 

pipe temperature is 180 degrees F (82.2C) or less. Wiring is 

fastened in place to prevent displacement prior to spraying.

(4) Skylight shafts and knee walls are air sealed. Insulation on attic 

knee walls and skylight shafts are physically supported by stapling 

in place, netting or using other mechanical attachment.

(5) Fireplace walls: Air barrier that is alligned with insulation; any 

gaps are sealed with caulk or foam.

703.2.1.1.4 HVAC register boots that penetrate the building 

envelope are caulked or sealed to the subfloor or drywall.

(2) Access to vented attics, including knee wall doors, and/or drop 

down stairs, is caulked, gasketed, or otherwise sealed.

(3) Duplex and townhouse construction: In the common walls 

between dwelling units (e.g., gypsum shaft wall) an air barrier is 

installed to seal the gap between the common wall and the 

structural framing.

(3) An insulated cover is gasketed or sealed to the attic opening 

where a whole building or whole dwelling unit fan penetrates into 

the attic.

(1) Where the overall air infiltration rate is equal to or less than the 

requirements for new construction (as indicated in Section 

704.6.2.1), this item applies to the renovation.

Addition Note: Section 703.2.1 applies only to the new 

construction portion of additions.

703.2.1.1.5 Masonry fireplace equipped with gasketed doors, 

outside combustion air, and a chimney top damper.

(1) Exterior walls behind the tub/shower are insulated and include 

an interior and exterior air barrier.

(2) Air sealed type electrical outlet boxes are installed or the air 

barrier extends completely behind the boxes. Insulation is placed 

between the sheathing and the rear of electrical or phone boxes 

located on exterior walls. Electrical outlet boxes ar

703.2.1.2 Air barrier is installed at any exterior edge of insulation at 

floors, foundations, and crawlspaces including insulated floors 

above garages and cantilevered floors.

(1) At dropped ceilings and soffits, the air barrier is substantially 

aligned with insulation and any gaps are sealed with caulk, foam, or 

tape. 

Renovation Note: The air infiltration of the existing whole building 

envelope is evaluated. Based on the evaluation, choose one of the 

following: (Additional points awarded only where third-party 

verification is not performed.)

703.2.1.1.3 Narrow cavities are filled and batts are cut to fit.

(4) Any exterior rigid insulation is tightly fitted or interlocking at the 

joints. 

(1) At a minimum, insulation is placed between the outside 

(ceiling, wall, or floor) and the pipes.

(e) Eave baffles or equivalent construction is installed to prevent 

wind washing.

(a) Standard insulation installation not in accordance with Grade 1 

or Grade 2 criteria.

(f) Installation with occasional installation defects is permitted: gaps 

around wiring, electrical outlets, plumbing and other intrusions; 

rounded edges or shoulders.

703.1.2.4 Grade 3 installation is in accordance with the following:

703.1.3 More than 75% of the above-grade exterior opaque wall 

area of the building is mass walls. 

703.2.1.1.1 Air Barrier and Thermal Barriers

Mass Construction

(1) Third party verification performed.

703.2.1 Insulation and air sealing is installed in accordance with all 

of the following, as applicable:

(3) Insulation is in substantial contact with sheathing materials on 

one or more sides.

(1) Thermal insulation is installed in substantial contact with interior 

and exterior air barrier to provide continuous alignment of the 

insulation with the air barrier. The following are deemed to be their 

own air barrier:

(a) Any spray or rigid foam insulation with an air permeance of 0.02 

L/s-m2 or less at 75 Pa.

(b) ICFs, SIPS, and other wall systems that provide their own air 

barrier, except at interfaces with other materials or assemblies, or 

penetrations.

(c) Spray foam that complies with the following: 

(ii) Continuous in the cavity without any unrepaired breaks.

(iii) air impermeable

(2) Voids or areas of incomplete fill (less than 30% of full 

thickness) are 2% or less of the insulated area.

(i) continuously attached to the top, bottom and both sides of the 

cavity
370 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(a) 15 percent 1 Add'l Pt

(b) 30 percent 2 Add'l Pts

(c) 50 percent 3 Add'l Pts

703.3 FENESTRATION

Points Per 

Tables 

703.3.1(a) 

or 

703.3.1(b)

U-Factor and SHGC Climate Zone

0.45 0.30 1 and 2 8

0.35 0.30 3 8

0.30 Any 4 and 5 5 5 (5) u=.30 shgc=.31

0.30 Any 6 and 8 6

0.55 0.35 1 to 3

0.55 Any 4 to 8

U-Factor and SHGC Climate Zone

0.45 0.25 1 and 2 10

0.35 0 .25 3 10

0.25 Any 4 and 5 10

0.25 Any 6 thru 8 12

0.50 0.35 1 to 3

0.50 Any 4 to 8

 0 Add'l Pts

2 Add'l Pts

703.4 HVAC Equipment Efficiency

4

(1) Table 703.4.2(1) Gas and propane 

heaters:

Climate Zone AFUE Points

1 >90% 0

1 >92% 0

1 >94% 0

2 >90% 2

2 >92% 2

2 >94% 3

3 >90% 5

3 >92% 6

3 >94% 7

4 >90% 8

4 >92% 9

4 >94% 10

5 >90% 11

5 >92% 12 12 (12) 92% unit

5 >94% 14

6 through 8 >90% 14

6 through 8 >92% 15

6 through 8 >94% 17

Table 703.4.2(2) Oil Furnace:

Climate Zone AFUE Points

1 >83% 0

1 >90% 0

2 >83% 1

2 >90% 2

3 >83% 3

3 >90% 5

4 >83% 3

4 >90% 8

5 >83% 7

5 >90% 11

6 through 8 >83% 7

6 through 8 >90% 14

(3) Gas Boiler: Points per Table 

703.4.2(3)

Climate Zone AFUE Points

1 >85% 0

1 >90% 0

1 >94% 0

2 >85% 1

2 >90% 2

2 >94% 3

3 >85% 3

Points per Table 703.4.2(2)

Points per Table 703.4.2(1)

included above

Windows and Exterior Doors (maximum certified ratings)

Renovation Note: Section 703.3.1 applies only to the 

replacement of existing windows. (Points available on the basis of 

a ratio of new window area to total window area (new window area 

divided by total window area.)

Addition Note: Section 703.3.1 applies only to the new 

construction portion of additions. (Points available on the basis of 

a ratio of new window area to total window area (new window area 

divided by total window area.)

(2) Where the overall air infiltration rate is greater than the 

requirements for new construction (as indicated in Section 

704.6.2.1), reduce the air infiltration of the whole building envelope 

by:

703.3.1 The NFRC-certified U-factor and SHGC for windows, 

exterior doors, skylights, and tubular daylighting devices (TDDs) 

are in accordance with Table 703.3.1(a) or (b). Decorative 

fenestration elements with a maximum of 15 square feet or 10% of 

the to

Table 703.3.1(a) - Enhanced Fenestration Specifications

Windows and Exterior Doors (maximum certified ratings)

included above

703.4.1 Combination Space Heating and Water Heating System 

(“Combo” System) is installed using either a coil from the water 

heater connected to an air handler to provide heat for the building 

or dwelling unit, or a space heating boiler using an indirect fired 

water heater. Devices shall have a combined annual efficiency of 

0.80. 

Skylights and TDDs (maximum certified ratings)

703.4.2 Furnace and/or boiler efficiency is in accordance with one 

of the following: 

Table 703.4.2(1) - Gas / Propane Heaters

Table 703.3.1(b) - Enhanced Fenestration Specifications

Table 703.4.2(2) - Oil Furnace:

Skylights and TDDs (maximum certified ratings)

Table 703.4.2(3) - Gas Boiler
APPENDIX B 371

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

3 >90% 5

3 >94% 7

4 >85% 4

4 >90% 8

4 >94% 10

5 >85% 6

5 >90% 11

5 >94% 14

6 through 8 >85% 7

6 through 8 >90% 14

6 through 8 >94% 17

Table 703.4.3.2(4) Oil Boiler: Points per Table 

703.4.2(4)

Climate Zone AFUE Points

1 >85% 0

1 >90% 0

2 >85% 1

2 >90% 2

3 >85% 3

3 >90% 5

4 >85% 4

4 >90% 8

5 >85% 6

5 >90% 11

6 through 8 >85% 7

6 through 8 >90% 14

1

Points per Table 

703.4.4

Climate Zone Efficiency Points

1 8.2HSPF 11.5EER 0

1 9.0HSPF 12.5EER 0

2 8.2HSPF 11.5EER 1

2 9.0HSPF 12.5EER 2

3 8.2HSPF 11.5EER 2

3 9.0HSPF 12.5EER 5

4 8.2HSPF 11.5EER 5

4 9.0HSPF 12.5EER 10

5 8.2HSPF 11.5EER 7*

5 9.0HSPF 12.5EER 11*

6 through 8 8.2HSPF 11.5EER 7*

6 through 8 9.0HSPF 12.5EER 12*

Points per Table 

703.4.5(1)

Climate Zone SEER (EER) Points

1 14 (11.5) 8

1 15 (12.5) 12

1 17 (12.5) 18

1 19 (12.5) 24

2 14 (11.5) 6

2 15 (12.5) 10

2 17 (12.5) 14

2 19 (12.5) 18

3 14 (11.5) 2

3 15 (12.5) 4

3 17 (12.5) 6

3 19 (12.5) 8

4 14 (11.5) 2

4 15 (12.5) 3

4 17 (12.5) 4

4 19 (12.5) 4

5 14 (11.5) 1

5 15 (12.5) 2

5 17 (12.5) 3

5 19 (12.5) 3

6 through 8 14 (11.5) 1

6 through 8 15 (12.5) 2

6 through 8 17 (12.5) 3

6 through 8 19 (12.5) 3

Points per 

Table 

Table 703.4.5(2) - Water Source and Cooled Air Conditioners

Climate Zone EER, COP Points

1 15 4.0 18

2 15 4.0 14

3 15 4.0 6

4 15 4.0 4

5 15 4.0 3

6 through 8 15 4.0 3

(1) Open loop; >16.2 EER and > 3.6 COP 20

20

20

30

1

2

(2) Water Source and Cooled Air Conditioners 

 Table 703.4.4 - Heat Pump Heating

*Zones 5-8 require consideration for use of resistance heat in cold 

climates when installing a heat pump.

703.4.3 Boiler equipped with temperature reset control or burner 

delay control. 

(2) Closed loop; >14.1 EER and > 3.3 COP

703.4.7 ENERGY STAR, or equivalent, ceiling fans are installed. 

(Points awarded per building.)

703.4.8 Whole building or whole dwelling unit fan(s) with insulated 

louvers and a sealed enclosure is installed. (Points awarded per 

building.)

703.4.5 Cooling efficiency is in accordance with one of the 

following. Refrigerant charge is verified for conformance with 

manufacturer’s instructions.

703.4.4 Heat pump heating efficiency is in accordance with Table 

703.4.4. Refrigerant charge is verified to be in conformance with 

manufacturer’s instructions.

Table 703.4.5(1) - Air Conditioner and Heat Pump Cooling

Table 703.4.2(4) - Oil Boiler

703.4.6 Ground source heat pump is installed by a Certified 

Geothermal Service Contractor in accordance with one of the 

following ENERGY STAR levels:

(3) Direct expansion; >15.0 EER and > 3.5 COP

(4) Any type (open, closed or direct expansion); >24 EER and > 

4.3 COP
372 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1

4

1

 0 Add'l Pts

1 Add'l Pt

(1) Gas Water Heating

Size (gallons) Energy Factor POINTS

30 to < 40 0.64 1 59% efficient 50 gallion

40 to < 50 0.62 1

50 to < 65 0.6 1

65 to < 75 0.58 1

75 0.56 1

 Any 0.8 10

Size (gallons) Thermal Efficiency POINTS

Any 82-86% 1

 Any > 86% 10

(2) Electric Water Heating

Size (gallons) Energy Factor POINTS

30 to < 40 0.95 1

40 to < 50 0.94 1

50 to < 65 0.92 1

65 to < 80 0.9 1

80 to < 100 0.88 1

100 0.86 1

(3) Oil Water Heating

Size (gallons) Energy Factor POINTS

30 to < 50 0.59 1

50 0.55 1

 (4) Heat Pump Water Heating

Energy Factor POINTS

Heat Pump 1.5 7

Heat Pump 2 10

Points per 

Table 703.5.2

Points for 

Desuper heater

5

2

2

703.5.4 Insulating hot water pipes 

1

1

 0 Add'l Pts

1 Add'l Pt

1

704 Additional Practices

704.2 Lighting and Appliances

4

4 

8

 0 Add'l Pts

Climate Zone

(Storage with input rate of 75,000 Btu/hr or less or instantaneous 

input rate of 200,000 Btu/hr or less)

(2) Install a device that can provide near real-time energy 

consumption information.

Renovation Note: Replace existing nonprogrammable 

thermostat.

703.4.10 An ENERGY STAR, or equivalent, programmable 

thermostat is installed to control each heating and cooling zone. 

(Points awarded per dwelling unit.)

Addition Note: Section 703.4.10 applies to the new construction 

portion of additions. 

Zone 5-8

Table 703.5.1(2) – Electric Water Heating

(1) A minimum of 50% of the total hard-wired lighting fixtures, or 

the bulbs in those fixtures, qualify as ENERGY STAR or 

equivalent.

(2) A minimum of 50% of the total hard-wired lighting fixtures 

qualify as ENERGY STAR or equivalent.

(3) A minimum of 80% of the exterior lighting wattage has an 

efficiency of at least 40 lumens per watt or be a solar powered light 

fixture. 

Addition Note: Section 704.2.1 applies only to the new 

construction portion of additions. 

Renovation Note: A percentage of the total lighting fixtures, or 

the lights in those fixtures, are replaced with fixtures or lights that 

qualify as ENERGY STAR or equivalent.

703.5.5 Indirect fired water heater storage tanks heated from boiler 

systems are installed.

Points Per 

Tables 

703.5.1(1)(a) or 

703.5.1(1)(b)

703.5.4.1 Hot water lines are insulated with a minimum of R-4 

insulation.

703.5.4.2 Boiler supply piping is insulated in unconditioned spaces.

703.5.2 Desuperheater, s installed by a qualified installer or is preinstalled in the factory.

Table 703.5.2 – Desuperheater

Table 703.5.1(1)(a) - Gas Water Heating

Zone 1-4

704.2.1 Hard-wired lighting meets one of the following: 

Points per 

Table 703.5.1(3)

Table 703.5.1(1)(b) - Gas Water Heating

704.1 Application of Additional Practice Points. Points from 

Section 704 can be added to points earned in Section 702 

(Performance Path), Section 703 (Prescriptive Path) or Section 

701.1.3 (alternative Bronze Level compliance).

Points per 

Table 703.5.1(4) Table 703.5.1(4) – Heat Pump Water Heating

(Storage with input rate of greater than 75,000 Btu/hr or 

instantaneous input rate greater than 200,000 Btu/hr)

Table 703.5.1(3) – Oil Water Heating

Points Per 

Tables 

703.5.1(2)

703.4.9 In multi-unit buildings, an advanced electric and fossil fuel 

submetering system is installed to monitor electricity and fossil fuel 

consumption for each unit. At a minimum, the information is 

available to the occupants on a monthly basis. 

Renovation Note: Where hot water lines in the existing building 

are accessible, the hot water lines are insulated in accordance with 

Section 703.5.4. (To receive additional points, a minimum of 50 

percent of the existing hot water lines are insulated.)

(1) Install a device providing monthly consumption information.

703.5 Water Heating Design, Equipment, and Installation

703.5.1 Water heater Energy Factor (EF) is equal to or greater 

than the following:

703.5.3 Drain-water heat recovery system is installed in multifamily units. (Points awarded per building.)

Addition Note: Section 703.5.4 applies only to the new or 

modified plumbing associated with the addition. 
APPENDIX B 373

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

 1 Add'l Pt

(2) 75 percent 2 Add'l Pts

(3) 100 percent 3 Add'l Pts

2

2 May be two in 2nd floor baths.

 Mandatory 0 

Add'l Pts

 1 Add'l Pt

(1) 25% of lighting 2

(2) 50% of lighting 4

2

(1) Refrigerator 5 5 

(2) Dishwasher 2 2 

(3) Washing machine 4 4 

(1) replace existing refrigerator 2 Add'l Pts

(2) replace existing dishwasher 1 Add'l Pt

 1 Add'l Pt

704.2.6 Induction cooktop is installed. 1

1

5

Climate Zone and Overhang Depth

Vertical Distance 

between bottom of 

overhang and top 

of window sill

1 through 3 2' 8" <7' 4"

1 through 3 2' 8" <6' 4"

1 through 3 2' 4" <5' 4"

1 through 3 2' 0" <4' 4"

1 through 3 2' 0" <3' 4"

4 through 6 2' 4" <7' 4"

4 through 6 2' 4" <6' 4"

4 through 6 2' 0" <5' 4"

4 through 6 2' 0" <4' 4"

4 through 6 1' 8" <3' 4"

7 and 8 2' 0" <7' 4"

7 and 8 1' 8" <6' 4"

7 and 8 1' 8" <5' 4"

7 and 8 1' 4" <4' 4"

7 and 8 1' 0" <3' 4"

 0 Add'l Pts

 1 Add'l Pt

1

3

1

(9) Return air or transfer grilles/ducts are in accordance with 

Section 704.4.5. 

704.3.1.3 Passive cooling design features are in accordance with 

three or more of the following:

Addition Note: Section 704.3.1.1 applies to the new construction 

portion of additions. (Points are available on the basis of a ratio of 

new building area to total building area. New building area divided 

by total building area.)

Renovation Note: Section 704.3.1.1 applies to existing 

construction. 

704.3.1.2 Automated solar protection is installed to provide 

shading for windows.

Points for three items:

Points for one additional item:

(c) Sloped skylights on slopes facing within 45o of true South, East 

or West are less than 1.5% of the Finished Ceiling area

(7) Overhangs or adjustable canopies or awnings or trellises 

provide shading on south facing glass for the appropriate climate 

zone in accordance with Table 704.3.1.1:

(8) The south face windows have a SHGC of 0.40 or higher.

Table 704.3.1.1 Southern Window Overhang Depth

(5) Vertical glazing area is less than 8% of gross Conditioned 

Floor Area on the north face, and glazing is ENERGY STAR 

compliant or equivalent.

(6) Skylights, where installed, are in accordance with the following:

(a) Shades and insulated wells are used and all glazing is 

ENERGY STAR compliant or equivalent.

(b) Horizontal skylights are less than 0.5 % of Finished Ceiling 

Area

(1) The long side (or one side if of equal length) of the building 

faces within 20o of true south.

(2) Vertical glazing area is between 5% and 7% of gross 

Conditioned Floor Area on the south face (also see Section 

704.3.1.1(8)).

(3) Vertical glazing area is less than 2% of gross Conditioned 

Floor Area on the west face, and glazing is ENERGY STAR 

compliant or equivalent.

(4) Vertical glazing area is less than 4% of gross Conditioned 

Floor Area on the east face and glazing is ENERGY STAR 

compliant or equivalent.

Renovation Note: Section 704.2.2 applies where room for 

installation within the conditioned envelope is available. (To 

receive additional points, a minimum of 50% of the total 

recessed ceiling lights are in accordance with Section 

704.2.2.)

704.2.7 Occupancy sensors are installed for a minimum of 80% of 

hardwired lighting outlets.

704.3.1 Solar space heating and cooling.

Addition and Renovation Note: Section 704.2.5 applies as 

follows:

(3) replace existing washing machine

704.3 Renewable Energy/Solar Heating and Cooling

704.2.4 Tubular daylighting device (TDD) or a skylight with sealed, 

insulated, low-E glass is installed in rooms without windows. 

(Points awarded per building.)

704.2.5 ENERGY STAR or equivalent appliance(s) are installed:

704.2.2 The number of recessed light fixtures that penetrate the 

thermal envelope are less than 1 per 400 square feet of total 

conditioned floor area and are in accordance with Section 

701.4.3.4(2). 

704.2.3 Occupancy sensors are installed on indoor lights, and 

photo or motion sensors are installed on outdoor lights to control 

lighting. 

(1) 50 percent

Addition Note: Section 704.2.2 is mandatory for the new 

construction portion of additions.

704.3.1.1 Sun-tempered Design: Building orientation, sizing of 

glazing, and design of overhangs are in accordance with all of the 

following:
374 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(c) Covered porches

 0 Add'l Pts

 1 Add'l Pt

4

704.3.2 Solar water heating

SEF - Electric Tank SEF - Gas Tank POINTS

1.30 - 1.50 0.85 - 1.00 8 8 $7.5K cost is included in performance 

upgrade 702.

1.51 - 1.80 1.01 - 1.20 11

1.81 - 2.30 1.21 - 1.50 14

2.31 - 3.00 1.51 - 2.00 17

 3.01 2.01 20

 1 Add'l Pt

1

0.5

704.4 Ducts

5

 Mandatory 

0 Add'l Pts

 1 Add'l Pt

Addition and Renovation Note: Section 704.3.2.1 applies to 

systems in additions and/or existing buildings. 

704.3.3.1 Photovoltaic panels are installed on the property. 

(Points awarded per every 100 watts DC of the rated PV 

system) 

704.3.3.2 Other onsite renewable energy source is installed (e.g., 

wind energy, onsite micro-hydro power, active solar space heating 

systems). (Points awarded per every 1/10 kW of the system) 

704.4.1 Duct system is sized, designed, and installed according to 

ACCA Manual D or equivalent.

Renovation Note: Section 704.4.1 applies only where the duct 

system in the existing building is readily accessible, and the duct 

system is sized, designed, and installed in accordance with ACCA 

Manual D or equivalent. A minimum of 75% of the duct runs a

704.3.2.1 Solar water heater. SRCC (Solar Rating & 

Certification Corporation) OG 300 rated, or equivalent, solar 

domestic water heating system is installed. Solar Energy Factor 

(SEF as defined by SRCC) is in accordance with Table 704.3.2.1.

704.3.3 Additional renewable energy options

Table 704.3.2.1 - Solar Hot Water Systems

(a) Thermal mass is solid and a minimum of 3” in thickness. 

Where two thermal mass materials are layered together (e.g. 

ceramic tile on concrete base) to achieve the appropriate thickness, 

they are fully adhered to (touching) each other. 

(b) Thermal mass directly exposed to sunlight must be provided in 

the following minimum ratios: 

(i) Above latitude 35o: 5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(ii) Latitude 30o to 35o: 5.5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(iii) Latitude 25o to 30o: 6 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(c) Thermal mass not directly exposed to sunlight is permitted to be 

used to achieve thermal mass requirements of Section 704.3.1.4 

(2) based on a ratio of 40 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(3) In addition to return air or transfer grilles/ducts required by 

Section 704.3.1.1, provisions for forced airflow to adjoining areas 

are implemented as needed. 

(2) Additional thermal mass for any room with south-facing glazing 

of more than 7% of the finished floor area is provided in 

accordance with the following:

704.3.1.4 Passive solar heating design. In addition to the suntempered design features in Section 704.3.1.1, all of the following 

are implemented: 

Addition Note: Section 704.3.1.3 applies to the new construction 

portion of additions. (Points are available on the basis of a ratio of 

new buidling area to total building area. New building area divided 

by total building area.)

Renovation Note: Section 704.3.1.3 applies to existing 

construction. A minimum of one design feature is required.

(1) Additional glazing, no greater than12%, is permitted on the 

south wall. This additional glazing is in accordance with the 

requirements in Section 704.3.1.1. 

(b) Moveable awnings or louvers

(d) Attached or detached conditioned/unconditioned enclosed 

space that provides full shade of east and west windows (e.g., 

detached garage, shed or building)

(2) Overhangs are installed to provide shading on south-facing 

glazing in accordance with Section 704.3.1.1(7). (Points not 

awarded if points are taken under 704.3.1.1.)

Addition Note: New construction portion of additions.

(3) Windows and/or venting skylights are located to facilitate cross 

ventilation.

(4) Solar reflective roof or radiant barrier is installed in Climate 

Zones 1, 2 or 3 and roof material meets a 3 year aged criteria of 

0.50.

(5) Internal exposed thermal mass is a minimum of three inches in 

thickness. Thermal mass consists of concrete, brick, and/or tile 

that are fully adhered to a masonry base or other masonry material 

and is in accordance with one or a combination of the fo

(a) A minimum of one square foot of exposed thermal mass of 

floor per three square feet of gross finished floor area. 

(b) A minimum of three square feet of exposed thermal mass in 

interior walls or elements per square foot of gross finished floor 

area.

(6) Roofing material is installed with a minimum 0.75 inch 

continuous air space offset from the roof deck from eave to ridge.

(1) Exterior shading is provided on east and west windows using 

one or a combination of the following strategies:

(a) Vine covered trellises with the vegetation separated a minimum 

of 1 foot from face of building.
APPENDIX B 375

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

15

15

12

12 0

RA duct in attic.

All second floor supplies are in exterior walls.

 0 Add'l Pts

 2 Add'l Pts

5

5 2nd floor supplied by returns to each room via 

attic.

 0 Add'l Pts

 2 Add'l Pts

704.5 HVAC Design and Installation

1

1 0 

1

1 0 

3

3 222 

1

4

5

5 

Cost of duct and air infiltration sealing in 702.

(a) 5 ACH50 0.25 nat 3 3 0 (3)

(b) 4 ACH50 0.2 6

(c) 3 ACH50 0.15 9 9 0 (9)

(d) 2 ACH50 0.1 12 12 0

(e) 1 ACH50 0.05 15

15

5

5 0 

704.6.2.2 The entire central HVAC duct system, including air 

handlers and register boots, is tested for leakage at a pressure 

differential of 0.1 inches w.g. (25 Pa). The maximum leakage as a 

percent of the system design flow rate is in accordance with 

(1) 6% for ductwork entirely outside the building's thermal 

envelope.

(2) 6% for ductwork entirely inside the building's thermal envelope.

3. Fireplaces and Fuel Burning Appliances are in accordance with 

901.2.

The maximum leakage rate is in accordance with:

2. Fossil fuel furnace and water heater is sealed combustion or 

power vented in accordance with Section 901.1.

(2) Building envelope air sealing is installed.

704.5.4 HVAC equipment operates using an alternate refrigerant 

containing no HCFCs. (Points awarded only until January 20, 

2010.)

(6) Total external system static does not exceed equipment 

capability at rated airflow. 

(3) Insulation is installed in accordance with Section 703.1.2 

(4) Windows, skylights, and doors are flashed, caulked, and 

sealed in accordance with manufacturer’s recommendations and in 

accordance with Section 703.2.1.

704.6.2 Third party testing is conducted to verify performance. 

704.6.2.1 Building envelope leakage rate is demonstrated by 

blower door test. In addition to the test, the following practices are 

required:

1. Whole building ventilation is provided in accordance with Section 

902.2.

704.5.3 Performance of the heating/cooling system is verified by 

the HVAC contractor in accordance with all of the following: 

(5) Total air flow is within 10% of design flow.

704.5.5 Manufacturer’s label or printed specifications for sealed 

air handler (except furnaces) indicates the leakage is less than or 

equal to 2% of design airflow at a pressure of 1-inch w.g. (1250 

Pa). Air handlers are tested with inlets, outlets, an

(1) Ducts are installed per IRC/IMC and ducts are sealed.

(2) Heating and cooling ducts and mechanical equipment are 

installed within the conditioned building space .

(3) Ductwork is not installed in exterior walls 

704.4.5 Return ducts or transfer grilles are installed in every room 

with a door. This practice does not apply to bathrooms, kitchens, 

closets, pantries, and laundry rooms. 

Addition Note: Section 704.4.4 applies to the new construction 

portion of additions. 

Renovation Note: Section 704.4.4 applies to renovations that 

involve the demolition, reconfiguration, and/or addition of interior 

walls, or a modification in the duct system of the building, or an 

intentional effort to implement the practices in Section 

704.4.2 Space heating is provided by a system that does not 

include air ducts.

704.4.4 Ductwork is in accordance with all of the following: 

(1) Building cavities are not used as return ductwork.

704.4.3 Space cooling is provided by a system that does not 

include air ducts.

Addition Note: Section 704.4.5 applies to the new construction 

portion of additions. 

Renovation Note: Section 704.4.5 applies to renovations that 

involve the demolition, reconfiguration, and/or addition of interior 

walls, or a change in the heating, cooling, and ventilation system of 

the building, or a test of the building for balanced p

704.6 Installation and Performance Verification

(3) Burner is set to fire at nameplate input.

704.6.1 Third party onsite inspection is conducted to verify 

conformance with all of the following, as applicable. Minimum of 2 

inspections are performed. One inspection after insulation is 

installed and prior to being covered, and another inspection upon 

completion of the project. Where multiple building or dwelling units 

of the same model are built by the same builder, a representative 

sample inspection of a minimum of 15% of the buildings or 

dwelling units is permitted. 

(1) Start-up procedure is performed according to manufacturer’s 

instructions.

(2) Refrigerant charge is verified by super-heat and/or sub-cooling 

method.

704.5.1 ACCA Manual S or equivalent is used to select heating 

and/or cooling equipment.

704.5.2 HVAC contractor and service technician are certified by a 

nationally or regionally recognized program such as North 

American Technician Excellence, Inc. (NATE), Building 

Performance Institute (BPI), Radiant Panel Association, or 

manufacturers’ tr

(4) Air handler setting/fan speed is set per manufacturer’s 

instructions.
376 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

15

8

8 296

 0 Add'l Pts

1 Add'l Pt

 3 Add'l Pts

7 Points Max

2

(2) Energy monitoring device 4

(3) Energy management control system 7

2

5

Base Pts. 36 0 1 0 0 0 24 525 8 382 Ch. 8 Subtotal 

Cost/Point

2 2

3

6

6

Foundation plan indicates that a manifold is 

used, but P204 isometric indicates tree and 

branch layout. 

8

 Mandatory 

0 Add'l Pts

Mandatory

Points 

Reduced by 

Half

 0 Add'l Pts

Points 

Reduced by 

Half

2 Add'l Pts

2 2

8 8

12

1 Add'l Pt

1 Add'l Pt

1 Add'l Pt

Addition Note: Section 704.6.2 applies to the new construction 

portion of additions. (Points are available on the basis of a ratio of 

new area to total area.) (New area divided by total area.)

(b) Total airflow is within 10% of design flow.

CHAPTER 8: WATER EFFICIENCY

(3) One of the following piping system designs is implemented:

(1) The overall energy performance features of the existing building 

are equal to or better than the requirements for new construction.

(2) If the overall energy performance features of the existing 

building are less than the requirements for new construction, third 

party testing is conducted to verify performance claimed in 

Sections 701.4.2.1, 703.1 and 703.2.1.

705.1 Energy consumption control. A whole building or whole 

dwelling unit device is installed that controls or monitors energy 

consumption. 

(3) 6% for ductwork both inside and outside the building thermal 

envelope.

Renovation Note: Section 704.6.2 applies as follows: Evaluate 

the performance features of the existing whole building envelope. 

Choose one of the following based on the evaluation:

704.6.2.3 Balanced HVAC air flows are demonstrated by flow 

hood or other acceptable flow measurement tool. Test results in 

accordance with both of the following:

(b) On demand hot water recirculation system is installed.

801.2 Energy Star® or equivalent water-conserving appliances are 

installed 

Addition Note: Section 801.1 applies only to the new construction 

portion of addition(s) that alter portions of a building with hot water 

applicances and/or fixtures.

Renovation Note: Section 801.1 applies only to renovation 

projects that have the ability to meet the requirements of Section 

801.1. (Renovation projects that are unable to meet the 

length of pipe runs indicated in Section 801.1, but are able to 

shorten e

(1) Minimum of 25% to less than 50% reduction in total pipe length 

or volume.

(2) More than or equal to 50% reduction in total pipe length or 

volume.

Addition Note - Section 801.1.1(3): Where a new hot water 

system is provided in an addition, this item applies. (Points for 

Section 801.1.1(3)(a), (b), and (c).

Addition and Renovation Note - Section 801.1.1(3): Section 

801.1.1(3) applies only where hot water lines in the existing 

building are accessible. (To receive additional points, a 

minimum of 50 percent of the hot water lines are in 

accordance with Section

(1) Dishwasher

(3) Replace existing washing machine with a water factor of 6.0 or 

less

(2) Replace existing washing machine

Addition and Renovation Note: Section 801.2 applies as follows 

when existing appliance(s) are properly disposed of and not placed 

into secondary service in a dwelling unit. 

(1) Replace existing dishwasher

(3) Washing machine with a water factor of 6.0 or less

(2) Washing machine

(b) Implement an engineered parallel piping system (i.e. manifold 

system) in which the hot water line distance from the water heater 

to the parallel piping system is less than 15 feet and the parallel 

piping to the fixture fittings contains a maximum of 8

(c) Central core plumbing system with all plumbing fixture fittings 

(e.g., faucets & showerheads) located such that the volume of 

water contained in each pipe run between the water heater and 

fixture fitting is a maximum of 6 cups (0.38 gallons).

1

(a) Tankless water heater is installed at point of use and is served 

only by cold water or a solar-assisted system.

(4) Pipe runs exceeding 40-feet from the water heater to fixture 

locations are aided by one of the following: 

(a) Use of structured-type plumbing with demand controlled hot 

water loops, in which the volume of water contained in the pipe and 

fixture fittings downstream of the recirculating trunk line is a 

maximum of 4 cups (0.25 gallons).

(1) All hot water piping which runs to the plumbing fixtures in both 

the kitchen and bathrooms is 40-feet or less in length from the 

water heater and is sized in accordance with the code for the 

specified application.

(2) All hot water piping which runs to the plumbing fixtures in both 

the kitchen and bathrooms is 30-feet or less from the water heater 

and is sized in accordance with the code for the specified 

application.

(a) Measured flow at each supply and return register is within 25% 

of design flow.

801.0 Intent. Measures that reduce indoor and outdoor water 

usage are implemented.

801.1. Indoor hot water usage is reduced by one of the following 

practices: 

705 Innovative Practices

801 Indoor and Outdoor Water Use

(1) Programmable communicating thermostat

705.2 Renewable energy service plan is as follows:

(2) The buyer of the home selects a renewable energy service plan 

provided by the utility prior to occupancy of the home.

(1) Builder selects a renewable energy service plan provided by 

the local electrical utility for interim (temporary) electric service. 

The builder’s local administrative office has renewable energy 

service.
APPENDIX B 377

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1 1

1 Point 

(3 Points Max)

2

Delta T13020/120/220 doesn't indicate flow 

rate, but this is EPA min.

1 Add'l Pt 1 (1) 

2 Add'l Pts 2 0

0 Add'l Pts

1 Add'l Pt

1 Add'l Pt

1 

3 Pts Max 3

2 Add'l Pts 2

1 Add'l Pt

2 Add'l Pts

2 Add'l Pts

1 

3 Pts Max

1 Add'l Pt 

6 Pts Max

Mandatory

6 

18 Pts Max

18 525

4 

Max 4 Points

6 

Add'l Points 6 0

0 Add'l Pts

1 Add'l Pt 

10 Pts. Max

2

4

4

4

4

6

1 Add'l Pt

2 Add'l Pts 

3

1 Add'l Pt

1 Add'l Pt

2

1 Add'l Pt

2 Add'l Pts

801.4 (1&2) 1) The total showerhead flow rate at any point in time, 

for all showerheads in each shower compartment is less than 2.5 

gpm, tested at 80 psi per ASME A112.18.1/CSA B125.1. 2) In 

addition the showerheads must be equipped with an automatic com

(1) a bathroom (Points awarded for each bathroom.)

(2) all lavatory faucets in the home meet the conditions of 801.5.1

Addition Note: Section 801.5.1 applies only to additions that 

include a bathroom.

Renovation Note: Section 801.5.1 applies only to renovations of 

existing bathrooms.

801.7.1 A low-volume, irrigation system is installed for each 

landscape type utilized: (Points awarded for each type of 

irrigation system installed.)

Addition and Renovation Note: Replace all faucets in nonrenovated bathrooms with faucets that are in accordance with 

Section 801.5.1. 

(3) All shower compartments installed meet the above conditions 

and are 2.0 to less than 2.5 gpm. 

(4) All shower compartments installed meet the above conditions 

and are 1.6 to less than 2.0 gpm. 

801.5 Faucets

Addition and Renovation Note: Section 801.7.1 applies only to 

additions that increase the building footprint or affect the irrigation 

system.

801.3 A minimum of one food waste disposer is installed at the 

primary kitchen sink. 

(4) Drip emitters

Addition and Renovation Note: Section 801.6 applies only to 

additions and renovations that include bathrooms. 

801.7 Irrigation systems 

801.5.2 Self-closing valve, motion sensor, metering, or pedalactivated faucet is installed to enable intermittent on/off operation. 

(Points awarded per fixture.)

Renovation Note: Additional points for Section 801.5.2 apply 

where installed.

Renovation Note: Renovations that do not include bathrooms 

receive points for replacing exisiting water closets with water 

closets in accordance with Section 801.6 (Points awarded per 

fixture.)

4) All water closets and all urinals are in accordance with Section 

801.6(2) or Section 801.6(3), as applicable. 

(3) A urinal is installed with a flush volume of 0.5 gallons or less 

when tested in accordance with ASME A112.19.2.

(1) Gold and Emerald Levels: All water closets and urinals are in 

accordance with either Section 801.6 or 802.2.

(5) Soaker hose

(6) Subsurface irrigation

1) designed by a professional in accordance with EPA 

WaterSense requirements or equivalent

801.7.2 Irrigation system is in accordance with both of the 

following: 

Renovation Note: Section 801.7.1 applies only to renovations of 

the landscape, hardscape, or outdoor living areas with existing 

irrigation systems or to renovations that replace the irrigation 

system.

2) installed in accordance with EPA WaterSense program or 

equivalent 

801.7.4 The irrigation system(s) is controlled by a smart controller: 

(1) High distribution uniformity (DU) rotating spray heads

(3) Bubblers

(2) Drip irrigation

Addition Note: Section 801.7.2 applies to additions that increase 

the building footprint or modify an existing irrigation system.

Renovation Note: Section 801.7.2 applies to renovations with 

existing irrigation systems that are modified, or to renovations 

where a new irrigation system is installed or the existing irrigation 

system is replaced.

Addition Note: Section 801.7.3 applies to additions that increase 

the building footprint or affect the irrigation system.

Renovation Note: Section 801.7.3 applies only to renovations with 

existing irrigation systems that are modified, or to renovations 

where a new irrigation system is installed or the existing irrigation 

system is replaced.

801.7.3 Irrigation system is zoned separately for turf and bedding 

areas.

801.4 (3&4) All shower compartments in the home comply with 

801.4 (1&2).

801.6 Water closets and urinals. Water closets and urinals are 

in accordance with the following: (For water closets, points 

awarded for either Section 801.6 or 802.2, but not both.)

(2) A water closet is installed with an effective flush volume of 1.28 

gallons or less when tested in accordance with ASME A112.19.2 

(all water closets) and ASME A112.19.14 (all dual flush water 

closets), and is in accordance with EPA WaterSense Tank-Type 

High-Efficiency Toilet. (Points awarded per fixture.)

Addition Note: Section 801.4 applies only to additions that 

include a minimum of one bath or shower.

801.5.1 Water-efficient lavatory faucets with 1.5 gpm or less 

maximum flow rate when tested at 60 psi in accordance with 

ASME A112.18.1 are installed.

Renovation Note: Section 801.4 applies only to renovations that 

include one or more bathrooms with a bath or shower. (Points 

awarded per fixture.)

Addition and Renovation Note: Existing showerhead is 

replaced with a showerhead that has a flow rate in accordance with 

Section 801.4. (Points awarded per additional showerhead.)

801.4 Showerheads
378 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

4

15 15

6 6 382 

2

2 0

1

4 Points 

(per fixture)

10

2 Add'l Pts

5 Add'l Pts

24 Points Max

Mandatory

8

8 Add'l Points

2

Base Pts. 49 0 25 140 31 134 36 671 8 116 Ch. 9 Subtotal 

Cost/Point

5

Mandatory 

Mandatory 

2 Additional 

Points

5

5 Water heater is draft.

2 Additional 

Points

5 5

3

5 5 0 Cost of tankless is in 702.

2 Additional 

Points

2

5

7

4

6

 (b) Direct vent water heater

901.2.1(2)(b) Factory-built wood burning fireplaces are in 

accordance with the certification requirements of UL 127 and are 

EPA certified.

Renovation Note: Section 901.1.3 applies to renovations that 

replace existing space heating and water heating combustion 

equipment with equipment in accordance with Section 901.1.3 for 

new construction.

901.1.4 The following electric equipment is installed:

1) Heat pump air handler in unconditioned space

2) Heat pump air handler in conditioned space 

901.2.1(1) Natural gas and propane fireplaces that are power 

vented or direct vented, are equipped with permanently fixed glass 

fronts or gasketed doors, and comply with ANSI Z21.88/CSA 

2.33a or ANSI Z21.50/CSA 2.22 

901.2 Fireplaces and Fuel Burning Appliances (except cooking 

appliances, clothes dryers, water heaters, and furnaces) located in 

conditioned space are code compliant, vented to the outdoors, and 

have adequate combustion and ventilation air provided to minimize 

spillage or back-drafting, in accordance with the following: All of 

the following items are mandatory, if applicable, for 

certification.

901.2.1(2)(a) Wood burning fireplaces are equipped with gasketed 

doors designed to operate with the doors closed, outside 

combustion air, and a means is provided for sealing the flue to 

minimize interior air (heat) loss when not in operation.

901.1.3 The following combustion space heating and water heating 

equipment is installed within conditioned space. 

(1) Direct vent furnace or boiler

(2) (a) Power vent water heater

901.1.1 Natural draft space heating or water heating equipment is 

not located in conditioned spaces, including conditioned crawl 

spaces. Natural draft equipment is permitted to be installed within 

the conditioned spaces if located in a mechanical room that has an 

outdoor air source, and is otherwise sealed and insulated to 

separate it from the conditioned space(s).

Addition Note: Section 901.1.1 applies to additions that include 

the use of natural draft space heating or water heating equipment.

901.1.2 Air handling equipment or return ducts are not located in 

the garage, unless placed in isolated, air-sealed mechanical rooms 

with an outside air source. 

Renovation Note: Section 901.1.1 applies to renovations that 

include areas where natural draft space heating or water heating 

equipment is located.

Renovation Note: Additional points are available for any 

renovation that modifies all of the existing building's natural draft 

space heating or water heating equipment in accordance with 

Section 901.1.1

Renovation Note: Section 901.1.2 applies to renovations that 

modify existing duct systems.

CHAPTER 9: INDOOR ENVIRONMENTAL QUALITY

901 Pollutant Source Control

901.0 Intent. Pollutant sources are controlled. 

901.1 Space and water heating options

(1) Excess Water Flow Shutoff

(2) Leak Detection System

802.3 Automatic shutoff water devices. One of the following 

automatic shutoff water supply devices is installed. Where a fire 

sprinkler system is present, installer is to ensure the device will not 

interfere with the operation of the fire sprinkler system

1) Gold and emerald levels: All water closets and urinals are in 

accordance with either Section 802.2 or Section 801.6. 

2) Composting or waterless toilet and/or urinal is installed. (Points 

awarded per fixture)

(1) Rainwater is collected and used 

(2) Rainwater is distributed using a renewable energy source or 

gravity.

801.9 Water Filters. Water filter is installed to improve water quality 

for the whole building or whole dwelling unit.

802.1 Gray water (as specified in ICC IRC, Appendix O) is 

separated and reused, as permitted by local building code. (Points 

awarded for either Section 802.1(1) or 802.1(2), not both)

(2) Soil moisture sensor based irrigation controller

3) All toilets and urinals are in accordance with Section 802.2 (2). 

(1) Each water closet flushed by reclaimed or recycled water.

(2) Irrigation from reclaimed or recycled water onsite

802.2 Composting or waterless toilets and/or urinals. 

Composting or waterless toilets and/or urinals are in accordance 

with the following: (For water closets, points awarded for either 

Section 802.2 or 801.6, but not both) 

Addition and Renovation Note: Additional points are available for 

Section 802.1 as follows: 

2) irrigation from reclaimed or recycled water onsite

1) each water closet flushed by reclaimed or recycled water

(3) No irrigation is installed and a landscape plan is developed in 

accordance with Section 503.5(1) as applicable. (Points must be 

taken in 503.5(1) in order to receive points for 801.7.4(3)

801.8 Rainwater collection and distribution is provided.

(1) Evapotranspiration (ET) based irrigation controller with a rain 

sensor 
APPENDIX B 379

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

6

6

6

2 Add'l Pts

2 Add'l Pts

2 Add'l Pts

7 7

Mandatory 

2 Points

Detached garage.

Mandatory 

2 Points

Detached garage.

4

10

10

Mandatory 

1 Add'l 

Point

3 Add'l 

Points

10 points 

max.

Mandatory

0

2 Points per 

Product Group

2 Points per 

Product Group

3 Points per 

Product Group

4 Points per 

Product Group

4 Points per 

Product Group

2 Add'l Pts

Mandatory

0

6 6 0

2 2 0

2

2 Add'l Pts

2 Add'l Pts

0 Add'l Pts

1 Add'l Pts

Renovation Note: Section 901.3 applies to renovations that 

involve construction adjacent to an attached garage.

Renovation Note: A focused effort to create a continuous air 

barrier between the garage and conditined space, including 

penetrations, occurring between walls and ceilings separating the 

garage and conditioned space.

(4) Particleboard, MDF, or hardwood plywood is in accordance with 

CPA 2.

Renovation Note: Additional points for Section 901.4 apply to 

renovations that replace all existing countertops, shelving, and 

other nonstructural products.

(3) Hardwood plywood is in accordance with HPVA HP-1 and HUD 

Title 24, Part 3280.

(5) Composite wood or agrifiber panel products contain no added 

urea-formaldehyde or are in accordance with the CARB Composite 

Wood Air Toxic Contaminant Measure Standard.

(6) Non-emitting products. 

901.4(1) Structural plywood used for floor, wall, and/or roof 

sheathing is compliant with DOC PS 1 and/or DOC PS 2. OSB 

used for floor, wall, and/or roof sheathing is compliant with DOC 

PS 2. The panels are made with moisture-resistant adhesives. The 

trademark indicates these adhesives as follows: Exposure 1 or 

Exterior for plywood, and Exposure 1 for OSB. 

901.4(2-6) Wood Materials. A minimum of 85% of material within a 

product group (i.e. wood structural panels, countertops, composite 

trim/doors, custom woodwork, and/or component closet shelving) is 

manufactured in accordance with the following: 

(2) Particleboard and MDF (medium density fiberboard) is 

manufactured and labeled in accordance with CPA A208.1 and 

CPA A208.2, respectively.

(c) Carpet adhesives

Renovation Note: Section 901.5(2) applies to renovations where 

existing carpet is replaced. Remove existing carpet and perform 

one of the following repair methods:

1) Existing carpeted floor area is exposed, cleaned, and finished 

and is used as non-carpeted finished floor.

2) Carpet is installed in accordance with Section 901.5.

3) New non-carpet flooring product in compliance with an approved 

green labeling program(s) is installed.

901.5(2) A minimum of 85% of installed carpet area, carpet 

cushion (padding), and carpet adhesives are in accordance with 

the emission levels of CDPH 01350, as certified by a third-party 

program, such as the Carpet and Rug Institute’s (CRI) Green 

Label Pl

(a) Carpet

(b) Carpet cushion

901.5 Carpets are in accordance with the following:

901.5(1) Wall-to-wall carpeting is not installed adjacent to water 

closets and bathing fixtures .

901.3(1)(b) A continuous air barrier is provided between walls and 

ceilings separating the garage space from the conditioned living 

spaces. 

901.3(1)(c) For one and two-family dwelling unit attached garages, 

a 100 cfm or greater ducted, or 70 cfm or greater unducted wall 

exhaust fan is installed and vented to the outdoors, designed and 

installed for continuous operation, or has controls (e.g., motion 

detectors, pressure switches) that activate operation for a 

minimum of 1 hour when either human passage door or roll-up 

automatic doors are operated. For ducted exhaust fans, the fan 

airflow rating and duct sizing are in accordance with Appendix A. 

(If you claim points for 901.3(1)(c), you cannot claim points for 

901.3(2). 

901.3(2) A carport is installed, the garage is detached from the 

building, or no garage is installed. (If you claim points for 901.3(2), 

you cannot claim points for 901.3(1)(a), 901.3(1)(b), or 901.3(1)(c).

Addition Note: Section 901.3 applies where the addition is a 

garage or shares a continuous air barrier with a garage.

901.3 Garages are in accordance with the following:

Renovation Note: Additional points are available for removing or 

rendering permanently unusable each existing wood-burning 

fireplace that is not in accordance with Section 901.2.1(2)(a) in 

areas other than the main renovation area.

901.3(1)(a) Where installed in the common wall between the 

attached garage and conditioned space, the door is tightly sealed 

and gasketed. 

901.2.1(2)(c) Wood stove and fireplace inserts, as defined in UL 

1482, Section 3.8 are in accordance with the certification 

requirements of UL 1482 and are in accordance with the emission 

requirements of the EPA Certification and the State of Washington 

W

901.2.1(2)(d) Pellet (biomass) stoves and furnaces are in 

accordance with the requirements of ASTM E1509 or are EPA 

Certified. 

Renovation Note: Removal of or rendering permanently unusable 

an existing fireplace and/or other fuel-burning appliances that are 

not in accordance with Section 901.2.1.

Renovation Note: Additional points are awarded for the 

replacement of each existing fireplace that is not in accordance 

with Section 901.2.1 with a fireplace that is in accordance with 

Section 901.2.1

901.2.1(2)(e) Masonry heaters are in accordance with the 

definitions in ASTM E1602 and ICC IBC, Section 2112.1. 

901.2.2 Fireplaces, woodstoves, pellet stoves, or masonry heaters 

are not installed. 
380 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

6

4

5

8

Mandatory 

1 Add'l Point

5

5

108 PM 06160-3 "use adhesives with a VOC 

content of 50 g/L or less calced to 40 CFR 59.

PM 06200-3 "Finish Carpentry...Aliphatic or 

phenolic resin wood glue...for general 

carpentry use." Note: some white construction 

glues comply.

8

5

5 0

5

2 2 -2

3

5

5 0 Higher cabinet performance spec required.

2 Add'l Pts

4

4 0

1

1 0

901.11 Insulation is in accordance with the following: 

(1) Formaldehyde emissions of wall, ceiling, and floor insulation 

materials are in accordance with the emissions levels of CDPH 

01350, as certified by a third-party program, such as the 

GREENGUARD Environmental Institute's Children and Schools 

Certification Program or theScientific Certifications Systems (SCS) 

Indoor Advantage Gold Program.

(2) Kitchen and bath vanity cabinets in accordance with CARB 

Composite Wood Air Toxic Contaminant Measure Standard are 

installed. 

(3) Kitchen and bath vanity cabinets are installed that contain no 

added urea formaldehyde or are in accordance with 

GGPS.EC.010.R0, ASTM D6670, or equivalent. 

Renovation Note: Additional Points for Section 901.10 apply to 

renovations that replace all existing kitchen and bath vanity 

cabinets. 

(2) GS-36

901.10 Cabinets. A minimum of 85% of kitchen and bath vanity 

cabinets are in accordance with one of the following: (Where 

more than one of the following practices is used, the practice 

with the fewer number of points is awarded)

(1) Kitchen and bath vanity cabinets in accordance with KCMA 

ESP 01, or equivalent, are installed.

901.9.2 Interior Low-VOC Adhesives and Sealants. For interior low 

VOC adhesives and sealants, a minimum of 85% of site-applied 

products used within the interior of the building are in accordance 

with one of the following, as applicable:

1) CDPH 01350, as certified by a third party program, such as 

Scientific Certification Systems (SCS) Indoor Advantage Gold 

Program or the Greenguard Environmental Institute's Children and 

Schools Certification Program.

c) The VOC content of all other caulks and sealants not to exceed 

2% by weight or 30 grams/liter, whichever is greater.

(d) The VOC content of contact adhesives not to exceed 55% by 

weight or 480 grams/liter, whichever is greater.

(2) GS-36

a) Construction Adhesives: VOC content not to exceed 7% by 

weight or 75 grams/liter, whichever is greater. 

b) The VOC content of reactive sealants (i.e., silicones, 

polyurethanes, and hybrids, such as MS Polymer and silylated 

polyurethane resin or SPUR) not to exceed 4% by weight or 50 

grams/liter, whichever is greater.

901.9.1 For exterior low-VOC adhesives and sealants, a minimum 

of 85% of site-applied products used for the installation of 

subfloors and on the exterior of the project are in accordance with 

one of the folllowing: 

(1) The California Air Resources Board consumer products 

regulation as follows: 

(d) 550 grams/liter clear wood lacquer 

901.8.2 Site-applied interior products are in accordance with the 

emissions levels of CDPH 01350, as certified by a third party 

program such as the Scientific Certification Systems (SCS) Indoor 

Advantage Gold Program or the Greenguard Environmental 

Institute's Children and Schools Certification Program.

Addition and Renovation Note: Section 901.8 applies when the 

building is occupied during construction.

901.9 Adhesives and Sealants. 

(b) 100 grams/liter non flat

(c) 350 grams/liter clear wood varnish

(4) VOC limits in accordance with:

(a) 50 grams/liter flat 

(2) CARB Suggested Control Measure for Architectural Coatings 

(3) GS-11

901.8.1 Site-applied interior products are in accordance with one or 

more of the following: 

(1) Zero VOC, determined by EPA Method 24 (VOC content below 

the detection limit for the method). 

901.7 Wall coverings. A minimum of 85% of wall coverings are in 

accordance with the emission concentration limits of CDPH 01350 

(using the office scenario), as certified by a third-party program, 

such as the Scientific Certification Systems (SCS) Indoor 

Advantage Gold Program or the Greenguard Environmental 

Institute's Children and Schools Certification Program. 

901.8 Architectural coatings. A minimum of 85% of the 

architectural coatings are in accordance with one of the following 

conditions:

901.6 Hard-surface flooring. A minimum of 85% of installed hardsurface flooring is in accordance with the emission concentration 

limits of CDPH 01350 (using the office scenario), as certified by a 

third-party program, such as the RFCI's FloorScore Indoor Air 

Certification Program or the Greenguard Environmental Institute's 

Children and Schools Certification Program. 

(2) Formaldehyde emissions of duct insulation materials are in 

accordance with the emissions levels of CDPH 01350, as certified 

by a third-party program, such as the GREENGUARD 

Environmental Institute's Children and Schools Certification 

Program or the Scientific Certifications Systems (SCS) Indoor 

Advantage Gold Program.
APPENDIX B 381

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

3

3 90

1

1 44

1

1

Mandatory

Mandatory

0 Complies.

Mandatory 0 Complies.

8

8 Broan 4000 has 160 CFM, 2-speed, 5.6 

sones.

Mandatory 

Mandatory 

2 Add'l Pts

3 Add'l Points

1 Add'l Pts

9 Points Max

5 5 42

2 2 42

8

8 149

Max. 6 

Points

2

3

8

10

10 345

15

17

0 Add'l Pts

1 Add'l Pts

2 Add'l Pts

8

8 93

3

3 0

0 Add'l Pts

Addition Note: Section 902.2.3 applies only to additions that 

include a new HVAC system.

(3) Heat-recovery ventilator.

(4) Energy-recovery ventilator.

902.2.2 Ventilation airflow is tested to achieve the design fan 

airflow at point of exhaust in accordance with Appendix B. (Points 

must be claimed in 902.2.1 to claim points in 902.2.2) 

902.2.3 MERV filters 8 or greater are installed on central air 

systems. Designer or installer is to verify that the HVAC equipment 

is able to accommodate the greater pressure drop of MERV 8 

filters. 

2) If the pressure and thermal boundaries of the addition are not 

separated from the existing building, Section 902.2.1 is applied to 

the whole building.

Renovation Note: Section 902.2.1 applies to the whole building 

for connected thermal and pressure boundaries.

Addition Note: Section 902.2.1 is applied to an addition in 

accordance with one of the following:

1) The pressure and thermal boundaries of the addition are 

separated from the existing building.

(1) Exhaust or supply fan(s) ready for continuous operation and 

with appropriately labeled controls.

(2) Balanced exhaust and supply fans with supply intakes located 

in accordance with the manufacturer's guidelines to not introduce 

polluted air back into the building. 

2) for each additional device

902.1.4 Exhaust fans are ENERGY STAR as applicable. 

902.1.3 Kitchen range, bathroom, and laundry exhaust are verified 

to specification. Ventilation airflow at the point of exhaust is tested 

to a minimum of 100 cfm intermittent or 25 cfm continuous for 

kitchens, and 50 cfm intermittent or 20 cfm continuous 

(1) ENERGY STAR, or equivalent, fans (Points awarded per fan) 

(2) ENERGY STAR, or equivalent, fans operating at or below 1 

sone (Points awarded per fan)

902.2. Building ventilation systems. 

902.2.1 One of the following whole building ventilation systems is 

implemented and is in accordance with the specifications of 

Appendix B. (Points must be claimed in 902.2.1 to claim points 

in 902.2.2.

(1) Bathrooms (including powder rooms) are vented to the 

outdoors. The minimum ventilation rate is 50 cfm for intermittent 

operation or 20 cfm for continuous operation in bathrooms. 

(2) Clothes dryers are vented to the outdoors. 

(3) Kitchen exhaust units and/or range hoods are ducted to the 

outdoors and have a minimum ventilation rate of 100 cfm for 

intermittent operation or 25 cfm for continuous operation. 

1) for first device

902.1.2 Bathroom and/or laundry exhaust fan is provided with an 

automatic timer and/or humidistat: 

Addition Note: Section 902.1 applies only to additions that include 

a kitchen or bathroom. 

Renovation Note: Section 902.1 applies to renovations that 

include a new or existing kitchen or bathroom. (Points 

available for all of the following conditions)

1) Existing non-vented kitchen range or bathroom exhaust systems 

in an area that is undergoing renovation are replaced with 

equipment that is in accordance with Section 902.1.

2) Existing non-vented kitchen range or bathroom exhaust systems 

in an area that is not undergoing renovation are replaced with 

equipment that is in accordance with Section 902.1.

3) New kitchen range or bathroom exhaust systems in accordance 

with Section 902.1 are installed where no exhaust system existed 

before renovation.

901.14 Non-smoking areas. All interior common areas of a multiunit building are designated as non-smoking areas with posted 

signage.

902 Pollutant Control

902.0 Intent. Pollutants generated in the building are controlled. 

902.1.1 Spot ventilation is in accordance with the following:

901.15 Renovation Note: For buildings constructed prior to 1978, 

lead-safe work practices are used during renovation, remodeling, 

painting, and demolition.

901.12 A carbon monoxide (CO) alarm is installed in a central 

location outside of each separate sleeping area in the immediate 

vicinity of the bedrooms. The CO alarm(s) is located in accordance 

with NFPA 720 and is hard-wired with a battery back-up. The alarm 

device(s) is certified by a third party for conformance with either 

CSA 6.19 or UL 2034.

901.13 Building entrance pollutants control. Pollutants are 

controlled at all main building entrances by one of the following 

methods: 

(1) Exterior grilles or mats are installed in a fixed manner and may 

be removable for cleaning. 

(2) Interior grilles or mats are installed in a fixed manner and may 

be removable for cleaning. 
382 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1 Add'l Pts

Mandatory 0

10 10 140 15

10

3

3 PM 15010-5 and PM 15010-9

0 Add'l Pts

3

PM 15010-9 stipulates cleaning filter 

additional requirements need to be 

incorporated into specs.

Mandatory

1 Add'l Pt

1 Add'l Pt

1 Add'l Pt

5

2

2 0

2 2 0

2 2 0

2 2 0

Mandatory

0 Doesn't Comply/Don't Know.PM 06160-2 

"Floor sheathing is rated for 24" oc span 

(23/32" OSB) and 1/4" luan BB underlayment.

Mandatory 0

A501 shows aggregate and poly; just no 

indication of continuity under wall plate. No 

indication if passive radon system is installed.

3

3 0

Mandatory 

0 Add'l Pts

6

Mandatory

0 Doesn't comply. Add to specs.

1 Add'l Pt

2 Add'l Pts

902.4 HVAC system protection. One of the following HVAC system 

protection measures is performed: 

(1) HVAC supply registers (boots), return grilles, and rough-ins are 

covered during construction activities to prevent dust and other 

pollutants from entering the system. 

(2) Prior to owner occupancy, HVAC supply registers (boots), 

return grilles, and duct terminations are inspected and vacuumed. 

In addition, the coils are inspected and cleaned and the filter is 

replaced if necessary. 

902.5 Central vacuum systems. Central vacuum system is installed 

and vented to the outside.

Addition and Renovation Note: Section 902.4(1) does not apply 

to additions and renovations except as noted in Addition and 

Renovation Note (3) below.

Addition and Renovation Note: As an alternative to Section 

902.4(2), one of the following options is implemented: 

1) During construction, a construction indoor air quality (IAQ) 

schedule is developed that includes, at a minimum, all of the 

following: 

Addition Note: Section 903.2 applies only to the new construction 

portion of additions.

Renovation Note: Section 903.2 applies only to renovations that 

include slab removal and/or replacement.

903.3 Crawlspaces

903.3.1(2) Damp-proof walls are provided below finished grade. 

Joints of vapor retarder overlap a minimum of 6 inches and are 

taped.

903.3.1(1) Minimum 6-mil vapor retarder installed on the crawl 

space floor and extended up the wall sufficient to allow the material 

to be affixed with glue and furring strips. Joints of vapor retarder 

overlap a minimum of 6 inches and are taped.

2) Additional points available for installing a footing drainage 

system.

1) Additional points available for damp proofing below grade walls.

Renovation Note: Additional Points:

a) type of construction activity

b) ability to occupy the building or dwelling unit

c) IAQ protections for occupant(s) of the building or dwelling unit

(b) An active radon system is installed.

902.3(2) Buildings located in Zone 2. 

(a) A passive radon system is installed. 

902.3 Radon control. Radon control measures are in accordance 

with ICC IRC Appendix F. (Zones are defined in Figure 9(1). 

902.3(1) Buildings located in Radon Zone 1 have a radon system 

installed.

(a) A passive radon system is installed. 

Renovation Note: Section 902.2.3 applies only to renovations that 

replace an existing HVAC system.

(b) Wall

(c) Floors

2) The addition or renovation area is sealed off from the occupied 

portion of the building or dwelling unit. The same HVAC system for 

conditioning the air in renovated and occupied space is not used. 

(1) Attic access, knee wall door, or drop down stair is caulked, 

gasketed, or otherwise sealed. 

(2) All penetrations (e.g., top plates, HVAC register boots, 

recessed can lights, are sealed in the following areas:

d) hazardous waste removal

e) name and age of occupants of the building or dwelling unit at a 

specific time

903.0 Intent. Moisture and moisture effects are controlled. 

903.1 Tile backing materials installed under tiled surfaces in wet 

areas are in accordance with ASTM C1178, C1278, C1288, or 

C1325. 

2) A minimum 4-inch thick uniform layer of sand, overlain with a 

layer or strips of geotextile drainage matting, covered with 

polyethylene sheeting, with the sheeting joints lapped according to 

Section 903.3.

903.2.1 A capillary break and vapor retarder are installed at all 

concrete slabs in accordance to the following:

1) A minimum 4-inch thick bed of 1⁄2 inch diameter or greater clean 

aggregate, covered with polyethylene or polystyrene sheeting in 

direct contact with the concrete slab, with the sheeting joints 

lapped in accordance with Section 903.3. (or)

903.2 Capillary breaks

b. In Dry climate locations, as defined by Figure 6(1), polyethylene 

sheeting is not required unless required for radon resistance 

(Section 902.3).

903.2.2 Add a capillary break on footing to prevent moisture 

migration into foundation wall. 

Modification for 1&2:

(a) Attic/ceiling

903 Moisture Management: Vapor, Rainwater, Plumbing, HVAC

3) The building or dwelling unit is not occupied during the entire 

construction period and Sections 902.4(1) and 902.4(2) are 

implemented.

902.6 Living space contaminants. The living space is sealed to 

prevent unwanted contaminants.

a. In areas with free-draining soils, identified as Group 1 in the ICC 

IRC by a certified hydrologist, soil scientist, or engineer through a 

site visit, a gravel bed or geotextile matting is not required.
APPENDIX B 383

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

n/a

10

8

1 Add'l Pt

2 Add'l Pts

2 Points 

2 0

Mandatory 

2 Points

0 Doesn't apply

4

4 0

2

2 0 

Mandatory

2 Add'l Pts

2

2 0 P204.

Mandatory 

Mandatory

3 Add'l 

Points

2 Add'l Pts

2

n/a

1 Add'l Pt

2 Add'l Pts

5 5 0 P204.

2 Add'l Pts

Mandatory

Doesn't comply. M301 duct insulation R5.5.

2

2 0

Mandatory

2 Add'l Pts

2 Add'l Pts

3 Add'l 

Points

8 Points 

n/a

Addition Note: Section 903.4.2 applies only where new finish 

flooring is applied.

Renovation Note: Section 903.4.2 applies only where new finish 

flooring is applied. Additional points available only for correcting 

excess moisture levels in an existing subfloor and/or substrate.

903.4.1(2) Walls are not enclosed (e.g. with drywall) if the 

insulation has a high moisture content. Wet insulation products are 

dry before enclosing. 

Addition Note: Section 903.3.2 applies only to the new 

construction portion of additions.

Renovation Note: Section 903.3.2 applies only to renovations that 

include a focused effort to convert an existing vented crawl space 

into an unvented, conditioned crawl space.

903.3.2 Crawlspace that is built as a conditioned area is sealed to 

prevent outside air infiltration and provided with conditioned air at a 

rate not less than 0.02 cfm per square foot of horizontal area and 

one of the following is implemented:

(1) A concrete slab over lapped 6 mil polyethylene or polystyrene

Addition and Renovation Note: Section 903.4.1 (1) and (2) 

applies to new, reused, and salvaged materials only. It excludes 

undisturbed existing materials.

(2) Central HVAC system equipped with additional controls to 

operate in dehumidification mode.

904 Innovative Practices

1) areas that include replacement or disturbance of HVAC ducts, 

plenums and trunk

2) in areas with specific condensation problems, remove any 

contaminated ductwork, remove or remediate mold-contaminated 

elements, and correct existing or add new insulation.

903.7 Relative Humidity. In climate zones 1A, 2A, 3A, 4A, and 5A 

as defined by Figure 6(1), equipment is installed to maintain 

relative humidity (RH) at or below 60% using one of the following: 

903.9.1 In “Warm-Humid” climates as defined by Figure 6(1) 

equipment is installed to maintain Relative Humidity (RH) at or 

below 60% using one of the following:

3) insulation on the existing HVAC ducts, plenums and trunks is 

upgraded

(1) Additional dehumidification system(s)

903.5.1 Plumbing distribution lines are not installed in exterior wall 

cavities.

903.5.2 Cold water pipes in unconditioned spaces are insulated to 

a minimum of R-4 with pipe insulation or other covering that 

adequately prevents condensation.

Addition Note: Section 903.5.1 applies only to the new 

construction portion of additions.

Renovation Note: Section 903.5.1 applies only to renovations that 

include exterior walls and plumbing lines or plumbing lines in 

unconditioned spaces.

1) A minimum of 50 percent of exterior wall piping is removed.

2) A minimum of 50 percent of exterior wall piping is insulated.

903.5 Plumbing. 

903.4.1(3) The moisture content of lumber is sampled to ensure it 

does not exceed 19 % prior to the surface and/or wall cavity 

enclosure. 

903.4.2 Moisture content of subfloor, substrate, or concrete slabs 

is in accordance with the appropriate industry standard for the 

finish flooring to be applied. 

(2) 6-mil polyethylene sheeting, lapped a minimum of 6 inches and 

taped at the seams. 

903.4 Moisture control measures. 

903.4.1(1) Building materials with visible mold are not installed or 

are cleaned or encapsulated prior to concealment and closing.

Addition Note: Section 903.6 applies only to the new construction 

portion of additions.

Renovation Note: Section 903.6 applies to renovations as follows: 

903.6(1) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated to 

a minimum of R-6. Outdoor air supplies to ventilation systems are 

insulated to a minimum of R-6.

903.6(2) Duct insulation. All HVAC ducts, plenums, and trunks in 

unconditioned attics, basements, and crawlspaces are insulated to 

a minimum of R-8. Outdoor air supplies to ventilation systems are 

insulated to a minimum of R-8.

5) drain, waste, and vent system is not in accordance with the ICC 

IPC.

2) Plumbing in unconditioned spaces is improved.

903.5.3 Plumbing is not installed in unconditioned spaces.

4) lead or other toxic solders

Renovation Note: The entire plumbing system between the 

connections of the water distribution and/or waste lines and the 

equipment and fixtures is replaced. This item applies if one or more 

of the following conditions exist: 

1) poor joint connections

2) thin pipe walls

3) severely reduced water flow caused by debris buildup

Renovation Note: The entire plumbing system between the 

connections of the water distribution and/or waste lines and the 

equipment and fixtures is replaced. This item applies if one or more 

of the following is implemented: 

1) Plumbing in unconditioned spaces is repaired or replaced.
384 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2

2

Mandatory 

1 

2

Base Pts.

0 0 9 950 6 94 0 0 0 0 Ch. 10 Subtotal 

1 point per 2 

items

0.5 100

Mandatory

0.5 850

Mandatory

0.5

Mandatory

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

0.5

Mandatory

on Building Operation And Maintenance for 

6

6 94

(1) HVAC filters.

(2) Thermostat operation and programming.

(3) Lighting controls.

(4) Appliances and settings.

(5) Water heater settings.

(6) Fan controls.

1003 Construction, Operation and 

Maintenance Manuals and Training for MultiUnit Buildings

(3) the EPA publications “Reducing Lead Hazards When

Remodeling Your Home” and “Asbestos in Your Home: A 

Homeowner’s Guide”

(17) Information about methods of maintaining the building’s 

relative humidity in the range of 30-60%.

CHAPTER 10: OPERATION, MAINT., AND BUILDING OWNER 

EDUCATION

Building Owners’ Manual for One- and Two-Family Dwellings

(Points awarded for mandatory and non-mandatory items)

(13) Maintenance checklist.

1002.1 Training of building owners. Building owners/occupants are

familiarized with the green building goals and strategies

implemented and the impacts of the occupants’ practices on the

costs of operating the building. Training is provided to the

responsible party(ies) regarding all equipment operation and control 

systems. Systems include, but are not limited to, the following:

(14) List of common hazardous materials often used around the 

building and instructions for proper handling and disposal of these 

materials.

(15) Information about organic pest control, fertilizers, de-icers, 

and cleaning products.

(16) Information about native landscape materials and/or those 

that have low-water requirements.

(18) Instructions for inspecting the building for termite infestation.

(19) Instructions for maintaining gutters and downspouts and 

importance of diverting water at least five feet away from 

foundation.

(10) Where frost protected shallow foundations are used, notify 

owner of precautions, including instructions not to remove or 

damage insulation when modifying landscaping, to provide heat to 

the home as required by the IRC/IBC, and to keep base materials 

(11) A list of local service providers that offer regularly scheduled 

service and maintenance contracts to assure proper performance 

of equipment and the structure (e.g., HVAC, water heating 

equipment, sealants, caulks, gutter and downspout system, showe

904.3 Renovation Note: Existing unsealed combustion gas dryer 

vents related to renovations.

2) Existing unsealed combustion gas dryer vent is replaced with a 

sealed exhaust vent and ducted makeup air is provided.

1) Existing unsealed combustion gas dryer vent is replaced with a 

sealed exhaust vent.

904.1 A humidity monitoring system is installed with a mobile base 

unit that displays a reading of temperature and relative humidity at 

the base unit with a minimum of two remote units. One remote unit 

that is placed permanently inside the conditioned space in a central 

location, excluding attachment to exterior walls, and another remote 

unit is placed permanently outside of the conditioned space.

904.2 Kitchen exhaust unit(s) that equal or exceeds 400 cfm, and 

make-up air is provided.

(12) A photo record of framing with utilities installed. Photos taken 

prior to installing insulation, clearly labeled, and included as part of 

the homeowner’s binder.

1001.0 Intent. Information on the building’s use, maintenance and 

green components is provided. 

(6) Explanation of the benefits of using energy efficient lighting 

systems (e.g., compact fluorescent light bulbs, light emitting diode 

(LED)) in high usage areas.

(7) A list of practices to conserve water and energy.

(20) A narrative detailing the importance of maintenance and 

operation in retaining the attributes of a green-built building.

Renovations Note: A building owners’ manual that includes the 

following:

(1) all mandatory items listed in Section 1001.1

(1) A green building program certificate or completion document.

(8) Local public transportation options (if applicable).

(9) A diagram showing the location of safety valves and controls 

for major building systems.

(2) List of green building features (can include the national green 

building checklist).

(3) Product manufacturer’s manuals or product data sheet for 

installed major equipment, fixtures and appliances. If product data 

sheet is in the binder, manufacturer’s manual shall may be 

attached to appliance in lieu of inclusion in the binder. 

(4) Information on local recycling programs.

(5) Information about available local utility programs that purchase 

a portion of energy from renewable energy providers. 

1001.1 A homeowner’s binder is provided that includes the 

following, as available and applicable:

(2) a minimum of six of the non-mandatory items listed in Section 

1001.1
APPENDIX B 385

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1

Mandatory

Mandatory

Mandatory

(4) Record drawings of the building.

0

1

Mandatory

Mandatory

Mandatory

(6) Local public transportation options.

0

1

Mandatory

a) HVAC filters

c) ighting controls

d) appliances and settings

e) water heater settings

f) fan controls

(5) Information on organic pest control, fertilizers, deicers, and

cleaning products.

(1) A narrative detailing the importance of maintaining a green

building. This narrative is included in all responsible parties’

manuals.

b) thermostat operation and programming

(8) A photo record of framing with utilities installed. Photos are

taken prior to installing insulation and clearly labeled.

1003.2 Operations manual. Operations manuals are created and

distributed to the responsible parties in accordance with Section

1003.0. Between all of the operation manuals, five or more of the

following options are included.

all mandatory items listed in Section 1003.1

(7) Instructions for inspecting the building for termite infestation.

(Points awarded per two items. Points awarded for both 

mandatory and non-mandatory items.)

(1) A narrative detailing the importance of operating and living in a

green building. This narrative is included in all responsible parties’

manuals.

(4) Information on opportunities to purchase renewable energy from 

local utilities or national green power providers and information on

utility and tax incentives for the installation of on-site renewable

energy systems.

(2)(A list of practices to conserve water and energy (e.g., turning

off lights when not in use, switching the rotation of ceiling fans in

changing seasons, purchasing ENERGY STAR appliances and

electronics).

(3) Information on methods of maintaining the building’s relative

humidity in the range of 30 percent to 60 percent.

(2) A list of local service providers that offer regularly scheduled

service and maintenance contracts to ensure proper performance

of equipment and the structure (e.g., HVAC, water-heating

equipment, sealants, caulks, gutter and downspout system, shower 

(3) User-friendly maintenance checklist that includes:

1003.0 Intent. Manuals are provided to the responsible parties 

(owner, management, tenant, and/or maintenance team) regarding 

the construction, operation, and maintenance of the building. Paper 

or digital format manuals are to include information regarding those 

aspects of the building’s construction, maintenance, and operation 

that are within the area of responsibilities of the respective 

recipient. One or more responsible parties are to receive a copy of 

all documentation for archival purposes.

1003.1 Building construction manual. A building construction

manual, including five or more of the following, is compiled and 

distributed in accordance with Section 1003.0.

(9) An outline of a formal green building training program for 

maintenance staff.

(3)Warranty, operation, and maintenance instructions for all

equipment, fixtures, appliances, and finishes.

(5) A record drawing of the site including stormwater management

plans, utility lines, landscaping with common name and

genus/species of plantings.

(6) A diagram showing the location of safety valves and controls for

major building systems.

(7) A list of the type and wattage of light bulbs installed in light

fixtures.

Addition and Renovation Note : A building construction manual 

that includes the following:

(6) Instructions for maintaining gutters and downspouts and the 

importance of diverting water a minimum of 5 feet away from 

1003.3 Maintenance manual. Maintenance manuals are created

and distributed to the responsible parties in accordance with

Section 1003.0. Between all of the maintenance manuals, five or

more of the following options are included.

(Points awarded per two items. Points awarded for both 

mandatory and non-mandatory items.)

(5) Information on local and on-site recycling and hazardous waste

disposal programs and, if applicable, building recycling and

hazardous waste handling and disposal procedures.

(7) Explanation of the benefits of using compact fluorescent light

bulbs, LEDs, or other high-efficiency lighting.

(8) Information on native landscape materials and/or those that

have low water requirements.

(9) Information on the radon mitigation system, where applicable.

a minimum of two of the non-mandatory items listed in Section 

1003.1

(1)A narrative detailing the importance of constructing a green 

building, including a list of green building attributes included in the 

building. This narrative is included in all responsible parties’ 

manuals.

(2) A local green building program certificate as well as a copy of

the National Green Building Standard TM , as adopted by the

Adopting Entity, and the individual measures achieved by the

building.

(10) A procedure for educating tenants in rental properties on the

proper use, benefits, and maintenance of green building systems

including a maintenance staff notification process for improperly

functioning equipment.

Addition and Renovation Note: An operations manual that 

includes the following:

all mandatory items listed in Section 1003.2

a minimum of three of the non-mandatory items listed in Section 

1003.2

(8) A procedure for rental tenant occupancy turnover that 

preserves the green features.

(4) List of common hazardous materials often used around the

building and instructions for proper handling and disposal of these

materials.
386 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

256 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

0

1004.1 (Reserved)

Addition and Renovation Note : A maintenance manual that 

includes the following:

1004

INNOVATIVE PRACTICES

all mandatory items listed in Section 1003.3.

a minimum of three of the non-mandatory items listed in Section 

1003.3.
APPENDIX B 387

APPENDIX B 

GREEN SCORING & COST

C. Cuyahoga, Ohio
388 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Building Comparison

1 Bedroom 3rd Floor West

Valley View Apartments (Cuyahoga, OH)

City of Cleveland, OH 

ANSI-ICC-700-2008 National Green Building StandardTM

Zone 5 multi-family 658 Silver Gold Emerald

Required Actual Required Actual Required Actual Required Actual

5. Lot Design... 39 101 66 101 93 129 119 153

6. Resource Efficiency 45 81 79 93 113 117 146 147

7. Energy Efficiency 30 51 60 104 100 155 120 191

8. Water Efficiency 14 22 26 37 41 43 60 61

9. Indoor Env. Quality 36 46 65 91 100 118 140 144

10. Operation, Maintenance... 8 16 10 16 11 16 12 16

Additional Points 50 100 100 100

Total 222 317 406 442 558 578 697 712

Points Cost Points Cost Points Cost Points Cost

Chapter 5 101 0 101 0 129 0 153 1,378

Chapter 6 81 0 93 55 117 384 147 4,493

Chapter 7 51 2,882 104 5,122 155 7,639 191 8,825

Chapter 8 22 175 37 98 43 162 61 2,227

Chapter 9 46 0 91 0 118 395 144 4,345

Chapter 10 16 250 16 250 16 250 16 250

Total 317 3,307 442 5,525 578 8,830 712 21,518

5.02 8.39 13.41 32.69

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

Cost/Pt 0 #DIV/0! 0 57

Rating 96 0 5 0 0 0 28 0 24 1,378 Ch. 5 Subtotal Base

4

5

5

3

3 0 4 blocks to bus

3

3 0 Connected to existing largely residential 

neighborhood.

3

3 0

4

4 752

Lot Design

5

5 0

6

6 0

4

4

4 626

2

3

Looks like it was a brownfield - no 

vegetation to maintain.

Appears to be brownfield. Landscape 

plan and study results in planset for next 

phase of construction.

ANSI National Green Building StandardTM Baseline Bronze Silver Gold

Bronze

Cost per SF ($)

Cummulative

CH. 5 LOT DESIGN, PREPARATION, AND DEVELOPMENT

500.0 Intent. This section applies to lot development for the 

eventual construction of residential buildings, multi-unit 

buildings, or additions thereto that contain dwelling units. The 

buildings on the lot earn their own performance level by 

complying with the provisions of Sections 303, 304, or 305.5, as 

applicable.

501.1 The lot is selected to minimize environmental impact by 

one or more of the following:

(1) An infill lot is selected.

(2) A greyfield lot or an EPA-recognized brownfield lot is 

selected.

501.2 Mass Transportation. A range of mass transportation 

choices are promoted by one or more of the following:

(1) A lot is selected within one-half mile of pedestrian access to 

a mass transit system or within five miles of a mass transit 

station with provisions for parking.

(2) Walkways, street crossings, and entrances designed to 

promote pedestrian activity are provided. New buildings are 

connected to existing sidewalks and areas of development.

(3) Addition and Renovation Note: A renovation or addition 

project is implemented. (Points awarded for using an 

existing building and infrastructure.)

(3) A lot is selected within one-half mile of six or more 

community resources (e.g., recreational facilities (such as 

pools, tennis courts, basketball courts), parks, grocery store, 

post office, place of worship, community center, daycare center, 

bank, school, restaurant, medical/dental office, laundromat/dry 

cleaner.) 

502.1 A knowledgeable team is established and team member 

roles are identified with respect to green lot design, preparation, 

and development. The project’s green goals and objectives are 

written into a mission statement. 

503.0 Intent. The lot is designed to avoid detrimental 

environmental impacts first, minimize any unavoidable impacts, 

and mitigate for those impacts that do occur. The project is 

designed to minimize environmental impacts and to protect, 

restore, and enhance the natural features and environmental 

quality of the lot. (To be awarded points allocated for 

design, the intent of the design shall be implemented.) 

503.1 Natural resources are conserved by one or more of the 

following:

502 Project Team, Mission Statement, and Goals

(6) Ongoing maintenance of vegetation during construction is in 

accordance with TCIA A300.

(1) A natural resources inventory is completed under the 

direction of a qualified professional. 

(2) A plan is implemented to conserve the elements identified 

by the resource inventory as high priority resources. 

(3) Items listed for protection in the resource inventory plan are 

protected under the direction of a qualified professional. 

(4) Basic training in tree or other natural resource protection is 

provided for onsite supervisor.

(5) All tree pruning on site is conducted by a Certified Arborist.

Emerald
APPENDIX B 389

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(a) Less than 25%

2 2 0 Site plan indicates steep slope and 

terracing at entry.

(b) 25 to 75% 3

(c) Greater than 75% 4

5

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

6

6 0 Terracing at entry. Considerable 

controlled fill goes here, as well, which 

may invalidate points.

4

5

5 0

5

5 0 One of these methods could be employed.

5

5 0

6

6 0

6

6 0 See C2.2

(a) Less than 25% 1

(b) 25 to 75% 3

(c) Greater than 75% 5

(4) A minimum of 75% of the roof is 

vegetated (green roof) 3

5

5 0

4

4 0

(a) Lot is 0% turf

4

This could be accomplished with little cost 

impact due to the limited green area.

(b) Greater than 0% to less than 25% 3 3 0

(c) 25% to less than 50% 2

(d) 50% to 75% 1

5

5 0

5

5 0

4

3

4

4 0

4

(1) Maintain wildlife habitat.

1 Addt'l Point

(3) All or a percentage of impervious surfaces are minimized 

and permeable materials are used for driveways, parking areas, 

walkways, and patios.

(a) tunneling instead of trenching

(b) use of smaller (low ground pressure) equipment or geomats 

to spread the weight of construction equipment

(1) Natural water and drainage features are preserved and 

used.

(2) A storm water management plan is developed and 

implemented that minimizes concentrated flows and simulates 

flows found in natural hydrology, e.g., vegetative swales, 

French drains, wetlands, drywells, and rain gardens.

(3) Limits of clearing and grading are demarcated on the plan.

503.4 Storm Water Mgmt. Storm water is managed using one 

or more of the following low impact development techniques:

(d) placement of utilities under paved surfaces instead of yards.

(c) shared utility trenches or easements

(1) Construction activities are scheduled to minimize length of 

time that soils are exposed.

(2) Utilities are installed using one or more alternative means:

503.2 Slope disturbance is minimized by one or more of the 

following: (Points awarded only if there are developable 

steep slopes on the lot.)

(1) All or a percentage of development on steep slopes is 

avoided.

(4) Long-term erosion effects are reduced through the design 

and implementation of terracing, retaining walls, landscaping, 

and restabilization techniques.

(5) Underground parking uses the natural slope for parking 

entrances.

(3) All or a percentage of roads and parking are aligned with 

natural topography to reduce cut and fill.

(2) Hydrological/soil stability study for steep slopes is 

completed and used to guide the design of all buildings on the 

site.

503.3 Soil disturbance and erosion are minimized by one or 

more of the following: (Also see Section 504.3) (Points must be 

taken here to claim points in 504.1)

503.5 Landscape plan is developed to limit water and energy 

use while preserving or enhancing the natural environment. 

(1) A plan is formulated to restore or enhance natural 

vegetation that is cleared during construction. Landscaping is 

phased to coincide with achievement of final grades to ensure 

denuded areas are quickly vegetated.

(2) Turf grass species, other vegetation, and trees are selected 

that are native or regionally appropriate for local growing 

conditions.

(3) A percentage or all turf areas are limited. 

(7) Onsite tree trimmings or stump grinding of regionally 

appropriate trees are used to provide protective mulch during 

construction and cleared trees are recycled as saw lumber or 

pulp wood.

503.6 Wildlife habitat. Measures are planned that will support 

wildlife habitat.

(4) Plants with similar watering needs are grouped 

(hydrozoning).

(5) Species and locations for tree planting are identified that 

will provide summer shading of streets, parking areas, and 

buildings to moderate temperatures. 

(6) Vegetative wind breaks or channels are designed as 

appropriate for local conditions.

(8) An integrated pest management plan to minimize chemical 

use in pesticides and fertilizers is developed.
390 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(2) Expand wildlife habitat.

2 Addt'l Points

6

3

3

4

7

10 10

504 Lot Construction

4

4 0 Specs didn't cover but should have.

3

3 0

4

4 0 Incorporate into project at planning.

4

4 0 Incorporate into project at planning.

5 5 0 Should be in specs 02230.

5

5 0 02230-3.3

5

5 0 02230 3.3

5

5 0 02230 3.8C

3

3

3 0

3 3 0 02300 2.1A

5 0 See 503.3.2.A

505 INNOVATIVE PRACTICES

4

4 0 Common parking area.

4

4 0 Incorporate light paving and shading.

Base Pts.

81 0 0 0 12 55 24 329 30 4,109 Ch. 6 Subtotal 

Cost/Point

(3) 21 or greater dwelling units per acre

503.7 Mixed use development is incorporated.

(1) Environmentally Sensitive Areas are avoided.

(1) 7 to less than 14 dwelling units per acre (4047 m2

)

503.8 Environmentally Sensitive Areas.

(2) Compromised Environmentally Sensitive Areas are 

mitigated or restored.

503.9 Density. The average density on a net developable area 

basis is: 

(2) 14 to less than 21 dwelling units per acre

(2) Trenching, significant changes in grade, and compaction of 

soil and critical root zones in “tree save” areas are avoided.

(3) Sediment and erosion controls are installed and maintained 

in accordance with the storm water pollution prevention plan 

(SWPPP), where required.

(3) Damage to designated existing trees and vegetation is 

mitigated during construction through pruning, root pruning, 

fertilizing, and watering.

504.3 Soil disturbance and erosion. Onsite soil disturbance 

and erosion are minimized by one or more of the following: 

(also see section 503.3)

(1) Limits of clearing and grading are staked out.

504.2 Trees and vegetation. Designated trees and vegetation 

are preserved by one or more of the following:

(2) “No disturbance” zones are created using fencing or 

flagging to protect vegetation and sensitive areas from 

construction activity. 

504.0 Intent. Environmental impact during construction is 

avoided to the extent possible; impacts that do occur are 

minimized, and any significant impacts are mitigated.

504.1 Onsite supervision and coordination is provided during 

clearing, grading, trenching, paving, and installation of utilities 

to ensure that specified green development practices are 

implemented (Also see Section 503.3.)

(8) Utilities are installed using one or more alternative means 

such as: 

(1) Fencing or equivalent to protect trees and other vegetation 

is installed.

(4) Topsoil is stockpiled and stabilized for later use to establish 

landscape plantings.

(5) Soil compaction from construction equipment is reduced by 

distributing the weight of the equipment over a larger area 

(laying lightweight geogrids, mulch, chipped wood, plywood, 

OSB, metal plates, or other materials capable of weight 

distribution in the pathway of the equipment).

(6) Disturbed areas that are complete or to be left unworked for 

greater than 21 days are stabilized within 14 days using 

methods as recommended by the EPA or in the approved storm 

water pollution prevention plan (SWPPP), where required.

(7) Soil is improved with organic amendments and mulch.

5

tunneling instead of trenching, use of smaller equipment, use of 

low ground pressure equipment, use of geomats, shared utility 

trenches or easements. 

505.0 Intent. Innovative lot design, preparation and 

development practices are used to enhance environmental 

performance. Waivers or variances from local development 

regulations are obtained and innovative zoning practices are 

used to implement such pract

505.1 Driveways or parking areas are shared. Waivers or 

variances from local development regulations are obtained to 

implement such practices as applicable. In a multi-unit project, 

parking capacity is not to exceed the local minimum 

requirements.

505.2 Heat Island Mitigation. Any combination of the following 

strategies are provided for a minimum of 50% of the horizontal 

surface area of the hardscape:

(1) Shading of hardscaping: Shade from existing or new 

vegetation is provided (within five years) or from trellises. Shade 

of hardscaping is to be measured on the summer solstice at 

noon.

(2) Light colored hardscaping: Horizontal hardscaping materials 

are installed with a solar reflectance index of 29 or greater. 

601.1 Conditioned floor area, as defined by ICC IRC 

calculated in accordance with ANSI Z765, is limited. Dwelling 

601 Quality of Construction Materials and Waste

601.0 Intent. Design and construction practices that minimize 

the environmental impact of the building materials are 

incorporated; environmentally efficient building systems and 

materials are incorporated; and waste generated during 

construction is reduc

CHAPTER 6: RESOURCE EFFICIENCY
APPENDIX B 391

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

15 15 1BR is 658 sf; all units <1,000 sf

12

9

6

Mandatory

3 pts per 

system (9 pts 

max)

9 0

roof truss, floor truss @24" and 2x6 at 24" 

See S3.

3 3 1,040

Allowed 24 prof. hours for redesign for 

these efficiencies.

3 3 1,040

3

3 3 1,040

1

4

4 0 Detailed structural plans and prefabbed 

floors and roofs. Missing wall details. 

Include in redesign for material efficiency.

(1) Floor system. 

4

4 0

(2) Wall system. 

4 4 0

(3) Roof system. 4 4 0

13

13

Max 8 

points

(1)first stacked story 4 4 0

(2) for each additional story 2

Max 12 

points

5

5 0 Brickfront

2

2 0 Prefinished metal siding at clubhouse.

5 0 Vinyl windows.

3

4

(1) Adobe

(2) Concrete/Masonry

(3) Logs 

(4) Rammed earth

Maximum 

number of 

points 5 

(1) Installing a porch roof or awning.

(2) Extending the roof overhang.

(3) Recessing the exterior door.

Main entrance door 3

Additional covered door assembly 1

4

Precut studs are used for 3rd floor units, 

however, 1st floor walls are 9' and there is 

no detail re: precuts.

Hallway entry at unit, however, main 

building entry is not covered.

(4) When used for at least 80% of cladding or siding area

(5) When used for at least 80% of penetrations or trim area

601.4 Detailed framing or structural plans, material quantity lists 

and onsite cut lists for framing, structural materials, and 

sheathing materials are provided.

(c) Window, skylight, and door assemblies not requiring paint or 

stain on exterior and/or interior surfaces.

601.5 Pre-cut or pre-assembled components, or panelized or 

precast assemblies are utilized for 90% for the following system 

or building.

(d) Wall coverings or systems not requiring paint or stain or 

other type of finishing application.

601.7 Site applied finishing materials. Building materials or 

assemblies that do not require additional site applied material 

for finishing are utilized. 

(a) Pigmented, stamped, decorative, or final finish concrete or 

masonry.

601.3 Building dimensions and layouts are designed to reduce 

material cuts and waste.

(1) When used for at least 80% of floor area

(3) When used for at least 80% of roof area 

(2) When used for at least 80% of wall area

(5) Greater than 4,000 square feet (373 m2

)

Multi-Unit Building Note: For a multi-unit building, use a 

weighted average of the individual unit sizes in qualifying for 

available points. 

601.2 Material Usage. Building-code-compliant structural 

systems or advanced framing techniques that optimize material 

usage are implemented. Points awarded for each system or 

framing technique implemented.

For every 100 square feet over 4,000 sf, one point is to be 

added to Table 303, category 7 for each performance level. 

(1) Less than or equal to 1,000 square feet

(2) Less than or equal to 1,500 square feet

(3) Less than or equal to 2,000 square feet

(4) Less than or equal to 2,500 square feet

(1) 90% or more of the installed material or assembly listed 

below:

(2) 50% to less than 90% of the installed building material or 

assembly listed below:

(b) Trim not requiring paint or stain.

(5) manufactured home construction for the entire building 

located above grade.

601.8 Foundations such as frost-protected shallow foundations, 

pier and pad foundations, post foundations and other similar 

foundation types are designed and constructed.

601.9 One or more of the following above grade wall systems 

that provide sufficient structural and thermal characteristics are 

used for at least 75% of the gross exterior wall area of the 

building: 

602.2 Roof overhangs, based on inches of rainfall in Table 

602.2, are provided over at least 90% of exterior walls to protect 

the building envelope.

602.0 Intent. Design and construction practices are 

implemented that enhance the durability of materials and 

reduce in-service maintenance.

602.1 Entries at exterior door assemblies, inclusive of side 

lights, are covered by one of the following methods below to 

protect the building from the effects of precipitation and solar 

radiation. A projection factor of at least 0.375 is 

provided. Eastern and western facing entries in Climate Zones 

1, 2, and 3, as determined in accordance with Figure 6(1), shall 

have a projection factor of at least 1.0 unless otherwise 

protected from direct solar radiation by other means (e.g. 

screen wall, vegetation).

602 Enhanced Durability and Reduced Maintenance

(4) modular construction for the entire building located above 

grade.

601.6 Stories above grade are stacked, such as in 1 1/2 and 2 

story or greater structures. The area of the upper story shall be 

at least 50% of the area of the story below, based on areas with 

a minimum ceiling height of 7 feet. 
392 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Inches Rainfall*

Eave Overhang 

(Inches)

Rake Overhang 

(Inches)

38.7" annual; overhang is 1" - parapet 

could be extended.

Less than 20 12 12

21 to 40 12 12 4 248

41 to 70 18 12

More than 70 24 12

Mandatory Met. Space not below grade.

4

4 55 Spread over 3 stories up. Plan indicates 

that slab has exterior footing drain only. 

A5.1

3 3 0 A5.1 indicates appropriate metal copiing 

at parapet for roof type.

4

4 0 Roof drains detailed

Mandatory

Met. 

4

Slight to moderate zone.

2

4

6

Mandatory

Met. A5.1

Mandatory

Met. Roofing is modified bituminous. A5.1

4

(1) Rubberized coating, or

(2) Drainage mat.

6

6 0 Various locations.

(2) Roof valleys.

3

Could be a detriment in winter.

(2) A green (landscaped) roof system.

3

3 75 Provide for recycling in trash rooms.

(2) Compost facility provided on-site.

3

Composting isn't practical on this 

site.

 1 

(Max 12 

points)

3

3 0 Rubber playground surface and rebound 

carpet pad.

Table 602.2

Minimum Roof Overhang for One- & Two-Story Buildings

602.3.2 Interior and exterior foundation perimeter drains are 

installed and sloped to discharge to daylight, dry well, or sump 

pit.

602.4 Drip edge is installed at eaves and gable roof edges.

602.5 A gutter and downspout system with extensions, or splash 

blocks and effective grading, are provided to carry water at least 

5 feet away from perimeter foundation walls. 

602.3 Foundation Drainage

602.3.1 Where required by the IRC/IBC for habitable and 

usable spaces below grade, exterior drain tile is installed.

602.6 Finish grade at all sides of building is sloped to provide a 

minimum of 6 inches of fall within 10 feet of the edge of the 

building. Where lot lines, walls, slopes or other physical barriers 

prohibit 6 inches of fall within 10 feet, the final grade 

602.7 Termite barrier. Continuous, physical,foundation termite 

barrier used with or without low toxicity treatment is installed in 

geographical areas that have subterranean termite infestation 

potential determined in accordance with Figure 6(3).

(1) In areas of slight to moderate termite infestation probability 

(as defined by Figure 6(3)) for the foundation, all structural 

walls, floors, concealed roof spaces not accessible for 

inspection, exterior decks, and exterior claddings within the first 

2 feet above the top of the foundation. 

602.12 Flashing details are shown on plans and flashing is 

installed at all of the following locations, as applicable:

(1) Around exterior fenestrations, skylights and doors.

(3) Deck/balcony to building intersections.

(2) In areas of moderate to heavy termite infestation probability 

(as defined by Figure 6(3)) for the foundation, all structural 

walls, floors, concealed roof spaces not acessible for 

inspection, exterior decks, and exterior claddings within the first 

3 feet above the top of the foundation. 

(3) In areas of very heavy termite infestation probability (as 

defined by Figure 6(3)) for the foundation, all structural walls, 

floors, concealed roof spaces not accessible for inspection, 

exterior decks, and exterior claddings.

602.9 Where required by the IRC/IBC, a water-resistive barrier 

and/or drainage plane system is installed behind exterior veneer 

and/or siding. 

(4) At roof-to-wall intersection and at roof-to-chimney 

intersections.

(5) A drip cap is provided above windows and doors that are 

not Flashed or protected by covering per Section 602.1.

602.14 Recycling. Occupant recycling is facilitated by one or 

more of the following methods:

603.1 Existing buildings and structures are reused, modified or 

deconstructed in lieu of demolition. (One point awarded for 

every 200 sq. ft., 18.5m2, of floor area.)

603.2 Reclaimed and/or salvaged materials and components 

are used.Total material and labor cost of salvaged materials 

shall equal or exceed 1% of total construction costs.

603.0 Intent. Practices that reuse or modify existing structures, 

salvage materials for other uses, or use salvaged materials in 

building’s construction are implemented. 

602.13 Roof Surfaces. A minimum of 90% of roof surfaces are 

constructed of one or both of the following:

(1) Products which meet the requirements of the ENERGY 

STAR® cool roof certification or equivalent.

(1) A built-in collection space in each kitchen and an 

aggregation/pick-up space in a garage, covered outdoor space 

or other area for recycling containers.

603 Reused or Salvaged Materials 

602.10 In areas where there has been a history of ice forming 

along the eaves causing a backup of water, an ice barrier is 

installed at roof eaves and is extended at least 24” inside the 

exterior wall line of the building, in accordance with the 

IRC/IBC.

602.11 Enhanced foundation waterproofing is installed:
APPENDIX B 393

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4

4 6 Based on central bins for 39 units

Points per 

Table 604.1

Material Percentage Recycled Content Per 2 Minor Per 2 Major

25% - 50% 1 2 2 0 carpet and padding see note 1

50% - 75% 2 4 6 0 gypsum board and cellulose insulation. 

Note: specify correct gypsum board & 

cellulose in lieu of fiberglass.

75% 3 6

6

6 989

7

7 0 Cost varies with location. Implement with 

605.1

Max 6

3

3 0 Recycle drywall and copper wire. Net 

savings is anticipated

1 2 0 Recycle cardboard and wood

Max 8

(b) engineered wood

(c) bamboo

(d) cotton

(e) cork

(f) straw

3 20 Interior trim package and doors 

6

6 0

OSB & Kitchen cabinets.

1 

(2 pts max)

(a) AFF American Tree Farm System®

4

606.2 Wood-based products are certified to the requirements 

of one of the following recognized product programs: 

(b) Canadian Standards Association’s Sustainable Forest 

Management System Standards (CAN/CSA Z809)

3

(c) Forest Stewardship Council (FSC)

606.1(1) At least two types of biobased materials are used, 

each for more than .5% of the project’s projected building 

material cost. Combined 8 pts Max

(2) for each additional recycled material.

(i) other biobased materials with a minimum of 50 percent 

biobased content (by weight or volume).

(d) Program for Endorsement of Forest Certification Systems 

(PEFC)

(e) Sustainable Forestry Initiative Program (SFI)

(6) Other product programs mutually recognized by PEFC

606.2(2) Where a minimum of two certified wood-based 

products are used in major elements of the building, such as 

walls, floors, or roof.

606.1(2) At least two types of biobased materials are used, 

each for more than 1% of the project’s projected building 

material cost. 

Note: All waste classified as hazardous shall be properly 

handled and disposed. (Points not awarded for hazardous 

waste removal.) 

605.1 A Construction Waste Management Plan is developed, 

implemented, and posted at the jobsite with a goal of recycling 

or salvaging a minimum of 50% (by weight) of construction and 

land-clearing waste.

Recycled Content

603.3 Scrap Materials. Facilitation for sorting and reuse of 

scrap building material (e.g. provide a central storage area or 

dedicated bins.)

604 Recycled-Content Building Materials

604.1 Building materials with recycled content are used for at 

least two minor and/or two major components of the 

building.(NOTE: Does not specify PConsumer. Implication is 

that max. allowable is 4 materials. 9 points is max. in scoring 

tool.)

Table 604.1

Recycled Construction Waste 

605.0 Intent. Waste generated during construction is recycled. 

(g) natural fiber products made from crops (soy or corn-based)

(h) products with the minimum biobased contents of the USDA 

7 CFR Part 2902 (Approx. 7%)

606.1(3) For each additional biobased material used for more 

than .5% of the project’s projected building material cost. 

606 Renewable Materials

(a) certified solid wood in accordance with Section 606.2

(a) Materials are ground or otherwise safely applied onsite as 

soil amendment or fill. At least 50% (by weight) of construction 

and land-clearing waste shall be diverted from landfill.

605.2 Onsite recycling measures following applicable 

regulations and codes are implemented, such as the following:

606.0 Intent. Building materials derived from renewable 

resources are used.

606.1 The following biobased products are used. (Note: 606.1 

and 606.2 denote % of project mat'l cost req'd.)

(b) Other methods approved by the NAHB Research Center 

(the Adopting Entity).

605.3 Recycled Construction materials: Construction materials 

(e.g., wood, cardboard, metals, drywall, plastic, asphalt roofing 

shingles, or concrete) are recycled offsite.

(1) A minimum of two types of materials are recycled.

606.2(1) Where a minimum of two certified wood-based 

products are used for minor elements of the building, such as all 

trim, cabinetry, or millwork.
394 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

6 pts. max.

2 0 Specify that OSB comes from a mill that 

complies. Or, try carpet manufacturer.

Max 9 points

3 steel girders

(3) Roof or floor trusses. 6 Roof and floor trusses.

10 points max.

2 2 0 stone for driveway base

2 4 0 steel and brick at base

Max 15 points

(1) Per product/system comparison 3

(2) Whole building LCA analysis 15

Max 10 points

Base Pts. 19 0 32 2,882 53 2,240 51 5,399 36 3,426 Ch. 7 Subtotal 

Use 703 path.

Only 10% better in the cost approach

Mandatory Practices

Mandatory

0 520 4 hrs. prof time assumed.

701.4.1 HVAC SYSTEMS

Mandatory

0 0 0 Not apparent. Put requirement for Manual 

D and S in 

Mandatory

0 Doesn't apply.

701.4.2 DUCT SYSTEM

Mandatory

0 0 Not apparent, however, section . Spec 

Mandatory 0 complies

Mandatory

0 PM 15250-2. Complies

Mandatory

0 Complies.

Mandatory

0 Complies

608.1 Indigenous materials are used for major elements of the 

building. 

701.1.1 Minimum Performance Path Requirements. A building complying 

with Section 702 shall exceed the baseline minimum performance required by 

the IECC by 15%, and shall include a minimum of two practices from Section 

704.

609.1 A more environmentally preferable product or assembly 

for an application based upon the use of a Life Cycle 

Assessment (LCA) tool compliant with ISO 14044 or other 

recognized standards that compare the environmental impact of 

building materials, as

610 Innovative Practices

(1) one type of material.

(2) For each additional material.

610.1 Manufacturer's environmental managment system 

concepts. Product manufacturer’s operations and business 

practices include environmental management system concepts 

and the production facility is ISO 14001 certified or equivalent. 

The aggregate value of building products from ISO 14001 

certified or equivalent production facilities is at least 1% or more 

of the estimated total building materials cost. (1 point awarded 

for every percent.) 

701.1 Mandatory requirements. The building shall comply with either Section 

702 (Performance Path) or Section 703 (Prescriptive Path). Items listed as 

“Mandatory” in Section 701.4 apply to both the Performance and Prescriptive 

Paths.

609 Life Cycle Analysis

701.1.2 Minimum Prescriptive Path Requirements. A building complying with 

section 703 shall obtain a minimum of 30 points from Section 703, and shall 

include a minimum of two practices from Section 704. 

CHAPTER 7: ENERGY EFFICIENCY

701.1.3 Alternative Bronze Level Compliance. As an alternative, any building 

that qualifies as an ENERGY STAR qualified home or equivalent achieves the 

Bronze Level for Chapter 7.

701.4.2.1 Ducts are sealed with tape complying with UL 181, 

mastic, gaskets, or an approved system as required by the ICC 

IRC (Section M1601.3.1, or ICC IMC Section 603.9) to reduce 

leakage.

701.2 Emerald Level Points. The Performance Path shall be used to achieve 

to the Emerald Level.

701.4.1.1 Space heating and cooling system/equipment shall 

be sized according to heating and cooling loads calculated 

using ACCA Manual J or equivalent. 

701.4.1.2 Where installed, as a primary heat source in the 

building, radiant or hydronic space heating system is designed 

using industry-approved guidelines (e.g. ACCA Manual J, 

GAMA H-22, or an accredited design professional's and 

manufacturer's recommen

701.3 A review by the Adopting Entity or designated third party 

shall be conducted to verify design and compliance with 

Chapter 7. 

607 Resource-Efficient Materials

607.1 Products containing fewer materials are used to achieve 

the same end-use requirements as conventional products, 

including but not limited to: (3 points awarded for each 

material.)

606.3 Manufacturing Energy. Materials are used for major 

components of the building that are manufactured using a 

minimum of 33% of the primary manufacturing process energy 

derived from renewable sources, combustible waste sources, or 

renewable energy credits (RECs). (2 points awarded per 

material.)

608 Indigenous Materials

(2) Engineered wood or engineered steel products.

(1) Lighter, thinner brick with bed depth less than 3 inches, 

brick with coring above 25%, or both.

701.4.2.2 Building cavities are not used as supply ducts. 

(2) Shafts (duct shaft, piping shaft/penetrations, flue shaft.) 

Openings to unconditioned space are fully sealed with solid 

blocking or flashing and any remaining gaps are sealed with 

caulk or foam. Fire-rated collars and caulking are installed 

where required.

(1) Floors (Including insulated floors above garages and 

cantilevered floors)

(1) Insulation shall be installed in accordance with the 

manufacturer’s instructions or local code, as applicable.

701.4.3.2 FLOOR / FOUNDATION / CRAWLSPACE

701.4.3 INSULATION and AIR SEALING

701.4.3.1 GENERAL Insulation and air sealing is in accordance 

with the following: 
APPENDIX B 395

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory

0 does apply.

701.4.3.3 WALLS 

Mandatory

0 Met

Mandatory

0 Met

Mandatory

0 Met

0 Met

Mandatory

0 Not applicable.

Mandatory

0 0 Not met. See flashing details, etc., 

however, no airseal spec.

Mandatory

0 Complies.Access is from trash rooms off 

hallways. Units are sealed.

Mandatory

0 Doesn't apply.

Mandatory

0 Unvented roof.

701.4.4 FENESTRATION

Mandatory

0 Complies

Table 701.4.4.1

Fenestration Specifications

Climate Zones U-Factor SHGC

1 and 2 0.65 0.4

3 0.4 0.4

4 to 8 0.35 Any

1 to 3 0.75 0.4

4 to 8 0.6 Any

702 Performance Path

Mandatory

Comply - prescriptive for base.

(1) 15%

30

30 2,362 (30) R-60 ceiling insulation; U-value of 

windows =.30; ACH5-=4.0;HSPF=8.2; 6% 

duct leakage.

(2) 30%

60

60 2,240 (60) NOTE: Requires utility change to natural 

gas from electric; 1" foam sheathing; 

window SHGC =.30; 14SEER A/C & 96% 

furnace; 65% gas water heater, direct 

vent. (Note: may require window redesign 

for gas vent clearance.)

(3) 50%

100

100 5,399 (100) R75 ceiling; ; ACH50=3; 3% duct leakage; 

95% heating/85%water heating boiler 

w/16sf of closed loop solar; 14SEER; 

Note: estimated $500 for extra controls of 

hydronics - unit cost similar to 96% 

furnace.

(4) 60% 120 120 2,827 64sf ICS; 2" foam sheathing; 16 SEER; 

703 Prescriptive Path 

(3) Eave vents. Where ceiling/attic assemblies or designs have 

eave vents, baffles, or other means shall be utilized to minimize 

air movement into or under the insulation.

701.4.4.1 The NFRC-certified U-factor and SHGC windows, 

exterior doors, skylights, and tubular daylighting devices (TDDs) 

are in accordance with ENERGY STAR, or equivalent, or Table 

701.4.4.1. Decorative fenestration elements with a maximum 

area of 15 square feet or 10 percent of the total glazing area, 

whichever is less, are not required to comply with this practice. 

Skylights and TDDs 

(max. certified ratings)

Windows and Exterior Doors 

(maximum certified ratings)

702.2 Energy efficiency features are implemented to achieve 

energy cost performance that exceeds ICC IECC by the 

following. A documented analysis using software in accordance 

with ICC IECC, Section 404, or ICC IECC Section 506.2 through 

506.5, applied as defined in the ICC IECC, is required.

(3) Between Foundation and Sill Plate Bottom Plate

(2) Recessed Lighting. Recessed light fixtures that penetrate 

the thermal envelope are airtight, IC rated, and sealed with 

gasket, caulk, or foam.

702.1 Points from Section 702 (Performance Path) shall not be 

combined with points from Section 703 (Prescriptive Path).

(4) Skylights and kneewalls. Skylight shafts and knee walls 

are insulated to the same level as the exterior walls.

(a) Insulation is installed to maintain permanent contact with the 

underside of the subfloor decking, enveloping any attached 

ductwork within the thermal envelope without compression or 

air gaps in the insulation. This practice does not apply to ducts 

or other mechanical equipment that are adjacent to the 

underside of the subfloor.

(b) Batt and loose-fill insulation is held in place by permanent 

attachments or systems in accordance with the manufacturer’s 

instructions.

(2) Crawlspace. Where insulated, crawlspace wall insulation is 

permanently attached to the walls. Exposed earth in unvented 

crawlspaces is covered with continuous vapor retarder with 

overlapping joints taped or masticed. 

(1) Windows and Doors. Caulking, gasketing, adhesive 

flashing tape, foam sealant, or weatherstripping is installed 

forming a complete air barrier. 

(1) Attic access (except unvented attics). Attic access, knee 

wall door, or drop down stair is covered with insulation and 

gasketed. Knee wall door is insulated unit or is covered with 

insulation.

(5) Exterior Architectural features. Code required building 

envelope insulation and air sealing is not disrupted at exterior 

architectural features such as stairs and decks. 

(2) Band Joist and Rim Joists. Band and rim joists are 

insulated and air sealed.

701.4.3.4 CEILINGS AND ATTICS

(a) Sill sealer, or other material that will expand and contract, 

shall be installed between foundation and sill plate.

(b) Caulk or the equivalent is installed to seal the bottom plate 

of exterior walls.
396 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Points per 

Table 703.1.1

Sect. 703 pts. 3

Practices 704 3

Zone 2 Zone 3

10% UA improvement 10 points 12 points

20% UA improvement 20 points 24 points

Zone 4 Zone 5-6

10% UA improvement 14 points 16 points 0 0 14.7% envelope savings over 2004 IECC

20% UA improvement 28 points 32 points no ua improvement per Rescheck.

Zone 7-8

10% UA improvement 18 points

20% UA improvement 36 points

Points per 

Table 703.1.2

Grade Points

1 15

2 10

3 0

Climate Zone

703.1 Building envelope. Where the total building thermal 

envelope UA is less than required by ICC IECC, Section 

402.1.4, the total building thermal envelope UA is in accordance 

with Table 703.1.1. Where insulation is used to achieve these 

percentages, a third-party grading of the installation as 

achieving Grade 1 is required. A documented analysis is 

performed using RES Check version 4.0.1 or later, or 

equivalent, based on a comparison to the ICC IECC, IRC, or 

IBC.

Total Building Thermal Envelope 

UA

Table 703.1.1

Table 703.1.2

703.1.2 The insulation installation is graded by a third party and 

is in accordance with Sections 703.1.2.1, 703.1.2.2, 703.1.2.3, 

and /or 703.1.2.4, as applicable. (Points not awarded in this 

section if already awarded under Section 703.1.1)

(b) Insulation is installed in accordance with the manufacturer’s 

instructions and/or industry standards.

703.1.2.1 Both Grade 1 and Grade 2 installations are in 

accordance with the following:

(c) Exterior rigid insulation shall have substantial contact with 

the structural framing members or sheathing materials, and is 

tightly fitted at joints.

Insulation Installation Grades

(a) Grades apply to cavity fill insulation, continuous rigid 

insulation, and any other field-installed insulation products. 

Grading applies to ceilings, walls, rim joists, conditioned 

basements and crawlspaces, except as specifically noted. 

Inspection shall be conducted before insulation is covered.

(c) Wall cavity insulation is enclosed on all six sides, and is in 

substantial contact with the sheathing material on one or more 

sides (interior or exterior) of the cavity.

(a) Insulation uniformly fills each cavity side-to-side and top-tobottom, without substantial gaps or voids around obstructions 

(such as blocking or bridging).

(b) In conditioned basement or crawlspace the following apply:

(g) ICFs, SIPs, and other wall systems that provide integral 

insulation comply with “Grade 1” insulation installation 

requirements where properly installed. 

(d) Cavity insulation is split, installed, and/or fitted tightly 

around wiring and other services.

(e) Exterior sheathing is not visible from the interior through 

gaps in the cavity insulation.

(f) Faced batt insulation is permitted to have side-stapled tabs, 

provided the tabs are stapled neatly with no buckling, and 

provided the batt is only compressed at the edges of each 

cavity, to the depth of the tab itself.

703.1.2.2 Grade 1 installation in accordance with the following: 

(b) Compression or incomplete fill amounts to no more than 2% 

or less, presuming the compression or fill is at least 70% of the 

intended fill thickness; occasional small gaps are acceptable.

(i) insulation is installed in complete contact with the subfloor 

surfaces. 

(c) Floor insulation over unconditioned basements is not 

required to be enclosed on six sides. 

(h) “Grade 1” insulation must meet or exceed all requirements of 

“Grade 2” insulation.

703.1.2.3 Grade 2 installation is in accordance with the 

following:

(a) A maximum of 2% of the surface area of insulation is 

missing. Compression or incomplete fill amounts to 10 percent 

or less, presuming the compression or fill is a minimum of 70 

percent of the intended fill thickness.

(d) Ceiling insulation is not required to be enclosed when the 

insulation is installed in complete contact with the drywall or 

plywood surfaces it is intended to insulate.

(ii) Floor insulation over vented or ambient conditions is 

enclosed on six sides.
APPENDIX B 397

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Points per 

Table 703.1.3

Table 703.1.3

Exterior Mass Walls

3 in. to <6 in. 6 in.

Climate Zones 1, 2, 3, 4 except marine, and 

5 dry. 4 6

Climate Zones 4 marine, 5 except dry, and 

6. 3 5

Climate Zones 7 and 8 0 0

703.2 Insulation & Air Sealing

15 Cost for planning in 701. Cost for 

inspection in Chapter 10.

(2) No third party verification performed. 3 3 0 (3)

703.2.1.1 GENERAL

(d) Air impermeable insulation.

703.2.1.1.2 Plumbing and Wiring 

703.2.1.3 WALLS

703.2.1.4 CEILINGS and ATTICS

(3) Insulation is in substantial contact with sheathing materials 

on one or more sides.

(4) Any exterior rigid insulation is tightly fitted or interlocking at 

the joints. 

(1) Thermal insulation is installed in substantial contact with 

interior and exterior air barrier to provide continuous alignment 

of the insulation with the air barrier. The following are deemed 

to be their own air barrier:

(a) Any spray or rigid foam insulation with an air permeance of 

0.02 L/s-m2 or less at 75 Pa.

(b) ICFs, SIPS, and other wall systems that provide their own air 

barrier, except at interfaces with other materials or assemblies, 

or penetrations.

(c) Spray foam that complies with the following: 

(ii) Continuous in the cavity without any unrepaired breaks.

(iii) air impermeable

(2) Voids or areas of incomplete fill (less than 30% of full 

thickness) are 2% or less of the insulated area.

(i) continuously attached to the top, bottom and both sides of 

the cavity

Mass Construction

(1) At a minimum, insulation is placed between the outside 

(ceiling, wall, or floor) and the pipes.

(e) Eave baffles or equivalent construction is installed to 

prevent wind washing.

(a) Standard insulation installation not in accordance with Grade 

1 or Grade 2 criteria.

(f) Installation with occasional installation defects is permitted: 

gaps around wiring, electrical outlets, plumbing and other 

intrusions; rounded edges or shoulders.

703.1.2.4 Grade 3 installation is in accordance with the 

following:

703.1.3 More than 75% of the above-grade exterior opaque wall 

area of the building is mass walls. 

703.2.1.1.1 Air Barrier and Thermal Barriers

(1) Third party verification performed.

703.2.1 Insulation and air sealing is installed in accordance 

with all of the following, as applicable:

(1) At dropped ceilings and soffits, the air barrier is substantially 

aligned with insulation and any gaps are sealed with caulk, 

foam, or tape. 

703.2.1.1.5 Masonry fireplace equipped with gasketed doors, 

outside combustion air, and a chimney top damper.

(1) Exterior walls behind the tub/shower are insulated and 

include an interior and exterior air barrier.

(2) Air sealed type electrical outlet boxes are installed or the air 

barrier extends completely behind the boxes. Insulation is 

placed between the sheathing and the rear of electrical or 

phone boxes located on exterior walls. Electrical outlet boxes 

ar

(3) Duplex and townhouse construction: In the common walls 

between dwelling units (e.g., gypsum shaft wall) an air barrier is 

installed to seal the gap between the common wall and the 

structural framing.

703.2.1.1.4 HVAC register boots that penetrate the building 

envelope are caulked or sealed to the subfloor or drywall.

703.2.1.2 Air barrier is installed at any exterior edge of 

insulation at floors, foundations, and crawlspaces including 

insulated floors above garages and cantilevered floors.

703.2.1.1.3 Narrow cavities are filled and batts are cut to fit.

(2) Batt insulation is split or cut to fit around wiring and 

plumbing.

(3) Sprayed insulation is installed to encapsulate pipes where 

the pipe temperature is 180 degrees F (82.2C) or less. Wiring is 

fastened in place to prevent displacement prior to spraying.

(4) Skylight shafts and knee walls are air sealed. Insulation on 

attic knee walls and skylight shafts are physically supported by 

stapling in place, netting or using other mechanical attachment.

(5) Fireplace walls: Air barrier that is alligned with insulation; 

any gaps are sealed with caulk or foam.
398 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(c) 50 percent 3 Add'l Pts

703.3 FENESTRATION

Points Per 

Tables 

703.3.1(a) 

or 

703.3.1(b)

U-Factor and SHGC Climate Zone

0.45 0.30 1 and 2 8

0.35 0.30 3 8

0.30 Any 4 and 5 5 0

0.30 Any 6 and 8 6

0.55 0.35 1 to 3

0.55 Any 4 to 8

U-Factor and SHGC Climate Zone

0.45 0.25 1 and 2 10

0.35 0 .25 3 10

0.25 Any 4 and 5 10

0.25 Any 6 thru 8 12

0.50 0.35 1 to 3

0.50 Any 4 to 8

703.4 HVAC Equipment Efficiency

4

(1) Table 703.4.2(1) Gas and propane 

heaters:

Climate Zone AFUE Points

1 >90% 0

1 >92% 0

1 >94% 0

2 >90% 2

2 >92% 2

2 >94% 3

3 >90% 5

3 >92% 6

3 >94% 7

4 >90% 8

4 >92% 9

4 >94% 10

5 >90% 11

5 >92% 12

5 >94% 14

6 through 8 >90% 14

6 through 8 >92% 15

6 through 8 >94% 17

Table 703.4.2(2) Oil Furnace:

Climate Zone AFUE Points

1 >83% 0

1 >90% 0

2 >83% 1

2 >90% 2

3 >83% 3

3 >90% 5

4 >83% 3

4 >90% 8

5 >83% 7

5 >90% 11

6 through 8 >83% 7

6 through 8 >90% 14

(3) Gas Boiler:

Points per 

Table 

703.4.2(3)

Table 703.3.1(b) - Enhanced Fenestration Specifications

Table 703.4.2(2) - Oil Furnace:

Table 703.4.2(3) - Gas Boiler

Skylights and TDDs (maximum certified ratings)

703.3.1 The NFRC-certified U-factor and SHGC for windows, 

exterior doors, skylights, and tubular daylighting devices (TDDs) 

are in accordance with Table 703.3.1(a) or (b). Decorative 

fenestration elements with a maximum of 15 square feet or 10% 

of the to

Table 703.3.1(a) - Enhanced Fenestration Specifications

703.4.1 Combination Space Heating and Water Heating 

System (“Combo” System) is installed using either a coil from 

the water heater connected to an air handler to provide heat for 

the building or dwelling unit, or a space heating boiler using an 

indirect fired water heater. Devices shall have a combined 

annual efficiency of 0.80. 

703.4.2 Furnace and/or boiler efficiency is in accordance with 

one of the following: 

Table 703.4.2(1) - Gas / Propane Heaters

(3) An insulated cover is gasketed or sealed to the attic opening 

where a whole building or whole dwelling unit fan penetrates 

into the attic.

Windows and Exterior Doors (maximum certified ratings)

Windows and Exterior Doors (maximum certified ratings)

Skylights and TDDs (maximum certified ratings)

included 

above

included 

above

Points per Table 703.4.2(2)

Points per Table 703.4.2(1)

(2) Access to vented attics, including knee wall doors, and/or 

drop down stairs, is caulked, gasketed, or otherwise sealed.
APPENDIX B 399

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Climate Zone AFUE Points

1 >85% 0

1 >90% 0

1 >94% 0

2 >85% 1

2 >90% 2

2 >94% 3

3 >85% 3

3 >90% 5

3 >94% 7

4 >85% 4

4 >90% 8

4 >94% 10

5 >85% 6

5 >90% 11

5 >94% 14

6 through 8 >85% 7

6 through 8 >90% 14

6 through 8 >94% 17

Table 703.4.3.2(4) Oil Boiler:

Points per 

Table 

703.4.2(4)

Climate Zone AFUE Points

1 >85% 0

1 >90% 0

2 >85% 1

2 >90% 2

3 >85% 3

3 >90% 5

4 >85% 4

4 >90% 8

5 >85% 6

5 >90% 11

6 through 8 >85% 7

6 through 8 >90% 14

1

Points per 

Table 703.4.4

Climate Zone Efficiency Points

1 8.2HSPF 11.5EER 0

1 9.0HSPF 12.5EER 0

2 8.2HSPF 11.5EER 1

2 9.0HSPF 12.5EER 2

3 8.2HSPF 11.5EER 2

3 9.0HSPF 12.5EER 5

4 8.2HSPF 11.5EER 5

4 9.0HSPF 12.5EER 10

5 8.2HSPF 11.5EER 7*

5 9.0HSPF 12.5EER 11*

6 through 8 8.2HSPF 11.5EER 7*

6 through 8 9.0HSPF 12.5EER 12*

Points per 

Table 

703.4.5(1)

Climate Zone SEER (EER) Points

1 14 (11.5) 8

1 15 (12.5) 12

1 17 (12.5) 18

1 19 (12.5) 24

2 14 (11.5) 6

2 15 (12.5) 10

2 17 (12.5) 14

2 19 (12.5) 18

3 14 (11.5) 2

3 15 (12.5) 4

3 17 (12.5) 6

3 19 (12.5) 8

4 14 (11.5) 2

4 15 (12.5) 3

4 17 (12.5) 4

4 19 (12.5) 4

5 14 (11.5) 1

5 15 (12.5) 2

5 17 (12.5) 3

5 19 (12.5) 3

6 through 8 14 (11.5) 1

6 through 8 15 (12.5) 2

6 through 8 17 (12.5) 3

6 through 8 19 (12.5) 3

Table 703.4.5(1) - Air Conditioner and Heat Pump Cooling

703.4.5 Cooling efficiency is in accordance with one of the 

following. Refrigerant charge is verified for conformance with 

manufacturer’s instructions.

703.4.4 Heat pump heating efficiency is in accordance with 

Table 703.4.4. Refrigerant charge is verified to be in 

conformance with manufacturer’s instructions.

Table 703.4.2(4) - Oil Boiler

 Table 703.4.4 - Heat Pump Heating

*Zones 5-8 require consideration for use of resistance heat in 

cold climates when installing a heat pump.

703.4.3 Boiler equipped with temperature reset control or 

burner delay control. 
400 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Points per 

Table 

Table 703.4.5(2) - Water Source and Cooled Air Conditioners

Climate Zone EER, COP Points

1 15 4.0 18

2 15 4.0 14

3 15 4.0 6

4 15 4.0 4

5 15 4.0 3

6 through 8 15 4.0 3

(1) Open loop; >16.2 EER and > 3.6 COP 20

20

20

30

1

2

1

4

1

(1) Gas Water Heating

Size (gallons) Energy Factor POINTS

30 to < 40 0.64 1

40 to < 50 0.62 1

50 to < 65 0.6 1

65 to < 75 0.58 1

75 0.56 1

 Any 0.8 10

Size (gallons) Thermal Efficiency POINTS

Any 82-86% 1

 Any > 86% 10

(2) Electric Water Heating

Size (gallons) Energy Factor POINTS

30 to < 40 0.95 1

40 to < 50 0.94 1

50 to < 65 0.92 1

65 to < 80 0.9 1

80 to < 100 0.88 1

100 0.86 1

(3) Oil Water Heating

Size (gallons) Energy Factor POINTS

30 to < 50 0.59 1

50 0.55 1

 (4) Heat Pump Water Heating

Energy Factor POINTS

Heat Pump 1.5 7

Heat Pump 2 10

Points per 

Table 703.5.2

Points for 

Desuper 

heater

5

2

2

703.5.4 Insulating hot water pipes 

(3) Direct expansion; >15.0 EER and > 3.5 COP

(4) Any type (open, closed or direct expansion); >24 EER and > 

4.3 COP

703.5.3 Drain-water heat recovery system is installed in multifamily units. (Points awarded per building.)

Points per 

Table 

703.5.1(3)

Table 703.5.1(1)(b) - Gas Water Heating

Points per 

Table 

703.5.1(4) Table 703.5.1(4) – Heat Pump Water Heating

(Storage with input rate of greater than 75,000 Btu/hr or 

instantaneous input rate greater than 200,000 Btu/hr)

Table 703.5.1(3) – Oil Water Heating

Points Per 

Tables 

703.5.1(2) Table 703.5.1(2) – Electric Water Heating

Points Per 

Tables 

703.5.1(1)(a) 

or 

703.5.1(1)(b)

703.5.2 Desuperheater, s installed by a qualified installer or is 

pre-installed in the factory.

Table 703.5.2 – Desuperheater

Table 703.5.1(1)(a) - Gas Water Heating

Zone 1-4

703.5.1 Water heater Energy Factor (EF) is equal to or greater 

than the following:

(Storage with input rate of 75,000 Btu/hr or less or 

instantaneous input rate of 200,000 Btu/hr or less)

Zone 5-8

(2) Closed loop; >14.1 EER and > 3.3 COP

(2) Water Source and Cooled Air Conditioners 

703.5 Water Heating Design, Equipment, and Installation

703.4.9 In multi-unit buildings, an advanced electric and fossil 

fuel submetering system is installed to monitor electricity and 

fossil fuel consumption for each unit. At a minimum, the 

information is available to the occupants on a monthly basis. 

703.4.7 ENERGY STAR, or equivalent, ceiling fans are 

installed. (Points awarded per building.)

703.4.8 Whole building or whole dwelling unit fan(s) with 

insulated louvers and a sealed enclosure is installed. (Points 

awarded per building.)

(1) Install a device providing monthly consumption information.

703.4.6 Ground source heat pump is installed by a Certified 

Geothermal Service Contractor in accordance with one of the 

following ENERGY STAR levels:

(2) Install a device that can provide near real-time energy 

consumption information.

703.4.10 An ENERGY STAR, or equivalent, programmable 

thermostat is installed to control each heating and cooling zone. 

(Points awarded per dwelling unit.)

Climate Zone
APPENDIX B 401

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1

1

1

704 Additional Practices

704.2 Lighting and Appliances

4

4 0 incandescent and cfl bulbs cost approx. 

the same.

8

2

2 0 

(1) 25% of lighting 2

(2) 50% of lighting 4

2

(1) Refrigerator

5

11402 2.2 all appliances to be Whirlpool 

EStar, however, some noted model 

numbers were not EStar classed.

(2) Dishwasher 2 2 0 

(3) Washing machine 4

704.2.6 Induction cooktop is installed. 1

1

5

Climate Zone and Overhang Depth

Vertical Distance 

between bottom of 

overhang and top 

of window sill

1 through 3 2' 8" <7' 4"

1 through 3 2' 8" <6' 4"

1 through 3 2' 4" <5' 4"

1 through 3 2' 0" <4' 4"

1 through 3 2' 0" <3' 4"

4 through 6 2' 4" <7' 4"

4 through 6 2' 4" <6' 4"

4 through 6 2' 0" <5' 4"

(1) The long side (or one side if of equal length) of the building 

faces within 20o of true south.

(2) Vertical glazing area is between 5% and 7% of gross 

Conditioned Floor Area on the south face (also see Section 

704.3.1.1(8)).

(3) Vertical glazing area is less than 2% of gross Conditioned 

Floor Area on the west face, and glazing is ENERGY STAR 

compliant or equivalent.

(5) Vertical glazing area is less than 8% of gross Conditioned 

Floor Area on the north face, and glazing is ENERGY STAR 

compliant or equivalent.

(6) Skylights, where installed, are in accordance with the 

following:

(a) Shades and insulated wells are used and all glazing is 

ENERGY STAR compliant or equivalent.

(b) Horizontal skylights are less than 0.5 % of Finished Ceiling 

Area

(c) Sloped skylights on slopes facing within 45o of true South, 

East or West are less than 1.5% of the Finished Ceiling area

704.2.4 Tubular daylighting device (TDD) or a skylight with 

sealed, insulated, low-E glass is installed in rooms without 

windows. (Points awarded per building.)

704.3.1.1 Sun-tempered Design: Building orientation, sizing of 

glazing, and design of overhangs are in accordance with all of 

the following:

704.2.7 Occupancy sensors are installed for a minimum of 80% 

of hardwired lighting outlets.

704.3.1 Solar space heating and cooling.

704.3 Renewable Energy/Solar Heating and Cooling

(4) Vertical glazing area is less than 4% of gross Conditioned 

Floor Area on the east face and glazing is ENERGY STAR 

compliant or equivalent.

704.2.1 Hard-wired lighting meets one of the following: 

(1) A minimum of 50% of the total hard-wired lighting fixtures, 

or the bulbs in those fixtures, qualify as ENERGY STAR or 

equivalent.

(2) A minimum of 50% of the total hard-wired lighting fixtures 

qualify as ENERGY STAR or equivalent.

704.2.5 ENERGY STAR or equivalent appliance(s) are 

installed:

(3) A minimum of 80% of the exterior lighting wattage has an 

efficiency of at least 40 lumens per watt or be a solar powered 

light fixture. Pts. not stated - under appeal 12/09 

704.2.2 The number of recessed light fixtures that penetrate 

the thermal envelope are less than 1 per 400 square feet of 

total conditioned floor area and are in accordance with Section 

701.4.3.4(2). 

704.2.3 Occupancy sensors are installed on indoor lights, and 

photo or motion sensors are installed on outdoor lights to 

control lighting. 

704.1 Application of Additional Practice Points. Points from 

Section 704 can be added to points earned in Section 702 

(Performance Path), Section 703 (Prescriptive Path) or Section 

701.1.3 (alternative Bronze Level compliance).

703.5.5 Indirect fired water heater storage tanks heated from 

boiler systems are installed.

703.5.4.1 Hot water lines are insulated with a minimum of R4 insulation.

703.5.4.2 Boiler supply piping is insulated in unconditioned 

spaces.

(7) Overhangs or adjustable canopies or awnings or trellises 

provide shading on south facing glass for the appropriate 

climate zone in accordance with Table 704.3.1.1:

Table 704.3.1.1 Southern Window Overhang Depth
402 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

4 through 6 2' 0" <4' 4"

4 through 6 1' 8" <3' 4"

7 and 8 2' 0" <7' 4"

7 and 8 1' 8" <6' 4"

7 and 8 1' 8" <5' 4"

7 and 8 1' 4" <4' 4"

7 and 8 1' 0" <3' 4"

1

3

1

(c) Covered porches

4

704.3.2 Solar water heating

SEF - Electric Tank SEF - Gas Tank POINTS

(8) The south face windows have a SHGC of 0.40 or higher.

(9) Return air or transfer grilles/ducts are in accordance with 

Section 704.4.5. 

704.3.1.3 Passive cooling design features are in accordance 

with three or more of the following:

(1) Exterior shading is provided on east and west windows 

using one or a combination of the following strategies:

(a) Vine covered trellises with the vegetation separated a 

minimum of 1 foot from face of building.

704.3.1.2 Automated solar protection is installed to provide 

shading for windows.

Points for three items:

Points for one additional item:

(b) Moveable awnings or louvers

(d) Attached or detached conditioned/unconditioned enclosed 

space that provides full shade of east and west windows (e.g., 

detached garage, shed or building)

(2) Overhangs are installed to provide shading on south-facing 

glazing in accordance with Section 704.3.1.1(7). (Points not 

awarded if points are taken under 704.3.1.1.)

(3) Windows and/or venting skylights are located to facilitate 

cross ventilation.

(4) Solar reflective roof or radiant barrier is installed in Climate 

Zones 1, 2 or 3 and roof material meets a 3 year aged criteria of 

0.50.

(5) Internal exposed thermal mass is a minimum of three 

inches in thickness. Thermal mass consists of concrete, brick, 

and/or tile that are fully adhered to a masonry base or other 

masonry material and is in accordance with one or a 

combination of the fo

(a) A minimum of one square foot of exposed thermal mass of 

floor per three square feet of gross finished floor area. 

(b) A minimum of three square feet of exposed thermal mass in 

interior walls or elements per square foot of gross finished floor 

area.

(6) Roofing material is installed with a minimum 0.75 inch 

continuous air space offset from the roof deck from eave to 

ridge.

(2) Additional thermal mass for any room with south-facing 

glazing of more than 7% of the finished floor area is provided in 

accordance with the following:

704.3.1.4 Passive solar heating design. In addition to the suntempered design features in Section 704.3.1.1, all of the 

following are implemented: 

(1) Additional glazing, no greater than12%, is permitted on the 

south wall. This additional glazing is in accordance with the 

requirements in Section 704.3.1.1. 

704.3.2.1 Solar water heater. SRCC (Solar Rating & 

Certification Corporation) OG 300 rated, or equivalent, solar 

domestic water heating system is installed. Solar Energy Factor 

(SEF as defined by SRCC) is in accordance with Table 

704.3.2.1.

Table 704.3.2.1 - Solar Hot Water Systems

(a) Thermal mass is solid and a minimum of 3” in thickness. 

Where two thermal mass materials are layered together (e.g. 

ceramic tile on concrete base) to achieve the appropriate 

thickness, they are fully adhered to (touching) each other. 

(b) Thermal mass directly exposed to sunlight must be provided 

in the following minimum ratios: 

(i) Above latitude 35o: 5 square feet of thermal mass for every 1 

square foot of south facing glazing. 

(ii) Latitude 30o to 35o: 5.5 square feet of thermal mass for 

every 1 square foot of south facing glazing. 

(iii) Latitude 25o to 30o: 6 square feet of thermal mass for every 

1 square foot of south facing glazing. 

(c) Thermal mass not directly exposed to sunlight is permitted to 

be used to achieve thermal mass requirements of Section 

704.3.1.4 (2) based on a ratio of 40 square feet of thermal mass 

for every 1 square foot of south facing glazing. 

(3) In addition to return air or transfer grilles/ducts required by 

Section 704.3.1.1, provisions for forced airflow to adjoining 

areas are implemented as needed. 
APPENDIX B 403

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

1.30 - 1.50 0.85 - 1.00 8 8 Cost is in performance section 702.

1.51 - 1.80 1.01 - 1.20 11

1.81 - 2.30 1.21 - 1.50 14

2.31 - 3.00 1.51 - 2.00 17

 3.01 2.01 20

1

0.5

704.4 Ducts

5 5 0 Spec

15

Gas boiler still uses ducts for blown air.

15

12

12 0 

5

5 74 

704.5 HVAC Design and Installation

1

1 0 Add to specs with Manual J requirement.

1

1 0 Spec

3

3 

149 

1

1 0 Spec

4

5

5 0 

Cost of air sealing is in 702.

Need to upgrade water heater for power 

vent.

704.6.1 Third party onsite inspection is conducted to verify 

conformance with all of the following, as applicable. Minimum 

of 2 inspections are performed. One inspection after insulation 

is installed and prior to being covered, and another inspection 

upon completion of the project. Where multiple building or 

dwelling units of the same model are built by the same builder, 

a representative sample inspection of a minimum of 15% of the 

buildings or dwelling units is permitted. 

(2) Building envelope air sealing is installed.

704.5.4 HVAC equipment operates using an alternate 

refrigerant containing no HCFCs. (Points awarded only until 

January 20, 2010.)

(6) Total external system static does not exceed equipment 

capability at rated airflow. 

704.5.5 Manufacturer’s label or printed specifications for 

sealed air handler (except furnaces) indicates the leakage is 

less than or equal to 2% of design airflow at a pressure of 1-

inch w.g. (1250 Pa). Air handlers are tested with inlets, outlets, 

an

(1) Ducts are installed per IRC/IMC and ducts are sealed.

704.6 Installation and Performance Verification

(1) Start-up procedure is performed according to 

manufacturer’s instructions.

(2) Refrigerant charge is verified by super-heat and/or subcooling method.

704.3.3 Additional renewable energy options

704.3.3.1 Photovoltaic panels are installed on the property. 

(Points awarded per every 100 watts DC of the rated PV 

system) 

704.3.3.2 Other onsite renewable energy source is installed 

(e.g., wind energy, onsite micro-hydro power, active solar space 

heating systems). (Points awarded per every 1/10 kW of the 

system) 

704.4.1 Duct system is sized, designed, and installed according 

to ACCA Manual D or equivalent.

(2) Heating and cooling ducts and mechanical equipment are 

installed within the conditioned building space .

704.4.2 Space heating is provided by a system that does not 

include air ducts.

704.4.4 Ductwork is in accordance with all of the following: 

(1) Building cavities are not used as return ductwork.

704.4.3 Space cooling is provided by a system that does not 

include air ducts.

(3) Ductwork is not installed in exterior walls 

704.4.5 Return ducts or transfer grilles are installed in every 

room with a door. This practice does not apply to bathrooms, 

kitchens, closets, pantries, and laundry rooms. 

704.5.3 Performance of the heating/cooling system is verified 

by the HVAC contractor in accordance with all of the following: 

(5) Total air flow is within 10% of design flow.

704.5.1 ACCA Manual S or equivalent is used to select heating 

and/or cooling equipment.

704.5.2 HVAC contractor and service technician are certified 

by a nationally or regionally recognized program such as North 

American Technician Excellence, Inc. (NATE), Building 

Performance Institute (BPI), Radiant Panel Association, or 

manufacturers’ tr

(4) Air handler setting/fan speed is set per manufacturer’s 

instructions.

(3) Burner is set to fire at nameplate input.

3. Fireplaces and Fuel Burning Appliances are in accordance 

with 901.2.

The maximum leakage rate is in accordance with:

(3) Insulation is installed in accordance with Section 703.1.2 

(4) Windows, skylights, and doors are flashed, caulked, and 

sealed in accordance with manufacturer’s recommendations 

and in accordance with Section 703.2.1.

704.6.2 Third party testing is conducted to verify performance. 

704.6.2.1 Building envelope leakage rate is demonstrated by 

blower door test. In addition to the test, the following practices 

are required:

2. Fossil fuel furnace and water heater is sealed combustion or 

power vented in accordance with Section 901.1.

1. Whole building ventilation is provided in accordance with 

Section 902.2.
404 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

(a) 5 ACH50 0.25 nat 3

(b) 4 ACH50 0.2 6 6 0 (6)

(c) 3 ACH50 0.15 9 9 0 

(d) 2 ACH50 0.1

12

(e) 1 ACH50 0.05 15

15

5 5 0 Standard design feature.

15

8

8 376 4 hours for a technician crew (2)

7 Points Max

2

(2) Energy monitoring device 4

(3) Energy management control system 7

2

5

Base Pts. 10 0 12 175 15 (77) 6 64 18 2,065 Ch. 8 Subtotal 

Cost/Point

2 20

3

B1 complies here, but other units have 

longer runs.

6

6

8

2 2 0

8

12 12 1300

1 1

E1.5a

1 Point 

(3 Points Max)

1 0

Specced flow rate is 2. gpm

1 Add'l Pt 1 0

(1) All hot water piping which runs to the plumbing fixtures in 

both the kitchen and bathrooms is 40-feet or less in length from 

the water heater and is sized in accordance with the code for 

the specified application.

(2) All hot water piping which runs to the plumbing fixtures in 

both the kitchen and bathrooms is 30-feet or less from the water 

heater and is sized in accordance with the code for the 

specified application.

(a) Measured flow at each supply and return register is within 

25% of design flow.

801.0 Intent. Measures that reduce indoor and outdoor water 

usage are implemented.

801.1. Indoor hot water usage is reduced by one of the 

following practices: 

801.4 (3&4) All shower compartments in the home comply with 

801.4 (1&2).

(2) The buyer of the home selects a renewable energy service 

plan provided by the utility prior to occupancy of the home.

705 Innovative Practices

801 Indoor and Outdoor Water Use

(1) Programmable communicating thermostat

705.2 Renewable energy service plan is as follows:

(1) Builder selects a renewable energy service plan provided by 

the local electrical utility for interim (temporary) electric service. 

The builder’s local administrative office has renewable energy 

service.

705.1 Energy consumption control. A whole building or 

whole dwelling unit device is installed that controls or monitors 

energy consumption. 

1

(a) Tankless water heater is installed at point of use and is 

served only by cold water or a solar-assisted system.

(4) Pipe runs exceeding 40-feet from the water heater to fixture 

locations are aided by one of the following: 

(a) Use of structured-type plumbing with demand controlled hot 

water loops, in which the volume of water contained in the pipe 

and fixture fittings downstream of the recirculating trunk line is a 

maximum of 4 cups (0.25 gallons).

(1) Dishwasher

(3) Washing machine with a water factor of 6.0 or less

(2) Washing machine

(3) 6% for ductwork both inside and outside the building 

thermal envelope.

(2) 6% for ductwork entirely inside the building's thermal 

envelope.

704.6.2.3 Balanced HVAC air flows are demonstrated by flow 

hood or other acceptable flow measurement tool. Test results 

in accordance with both of the following:

(b) Total airflow is within 10% of design flow.

704.6.2.2 The entire central HVAC duct system, including air 

handlers and register boots, is tested for leakage at a pressure 

differential of 0.1 inches w.g. (25 Pa). The maximum leakage 

as a percent of the system design flow rate is in accordance 

with 

(1) 6% for ductwork entirely outside the building's thermal 

envelope.

801.2 Energy Star® or equivalent water-conserving appliances 

are installed 

(b) Implement an engineered parallel piping system (i.e. 

manifold system) in which the hot water line distance from the 

water heater to the parallel piping system is less than 15 feet 

and the parallel piping to the fixture fittings contains a maximum 

of 8

(c) Central core plumbing system with all plumbing fixture 

fittings (e.g., faucets & showerheads) located such that the 

volume of water contained in each pipe run between the water 

heater and fixture fitting is a maximum of 6 cups (0.38 gallons).

801.4 Showerheads

CHAPTER 8: WATER EFFICIENCY

(3) All shower compartments installed meet the above 

conditions and are 2.0 to less than 2.5 gpm. 

(3) One of the following piping system designs is implemented:

(b) On demand hot water recirculation system is installed.

801.3 A minimum of one food waste disposer is installed at the 

primary kitchen sink. 

801.4 (1&2) 1) The total showerhead flow rate at any point in 

time, for all showerheads in each shower compartment is less 

than 2.5 gpm, tested at 80 psi per ASME A112.18.1/CSA 

B125.1. 2) In addition the showerheads must be equipped with 

an automatic com

Costs are included in performance rating 

in 702
APPENDIX B 405

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2 Add'l Pts

Respec for lower shower flow rate.

1 

3 Pts Max 1 0

2 Add'l Pts 2 0

1 

3 Pts Max

Mandatory

Met at bronze.

6 

18 Pts Max 6 175

Install low flow toilet

4 

Max 4 Points

6 

Add'l Points 6 0

10 Pts. Max

2

4 4 77 Add 3K over all units in bldg.

4

4

4 4

6

3

3

2

2

4

4

4

15

15 (77) -15 77 There is a pop up irrigation system. It was 

assumed to have cost $3,000 due to the 

small area of coverage. It should be 

omitted.

6 6 64

$382 per approx. 6 units; roof drainage 

plan not evident.

2

2 0

1

4 Points 

(per fixture)

10

24 Points Max

Mandatory

8

8 Add'l Points

2

2 611

Base Pts. 46 0 0 0 45 0 27 395 26 3,950 Ch. 9 Subtotal 

801.6 Water closets and urinals. Water closets and urinals 

are in accordance with the following: (For water closets, 

points awarded for either Section 801.6 or 802.2, but not 

both.)

(2) A water closet is installed with an effective flush volume of 

1.28 gallons or less when tested in accordance with ASME 

A112.19.2 (all water closets) and ASME A112.19.14 (all dual 

flush water closets), and is in accordance with EPA 

WaterSense Tank-Type High-Efficiency Toilet. (Points 

awarded per fixture.)

801.5.1 Water-efficient lavatory faucets with 1.5 gpm or less 

maximum flow rate when tested at 60 psi in accordance with 

ASME A112.18.1 are installed.

(1) High distribution uniformity (DU) rotating spray heads

(3) Bubblers

(2) Drip irrigation

801.7.3 Irrigation system is zoned separately for turf and 

bedding areas.

(2) Soil moisture sensor based irrigation controller

801.7.4 The irrigation system(s) is controlled by a smart 

controller: 

(1) Evapotranspiration (ET) based irrigation controller with a rain 

sensor 

801.8 Rainwater collection and distribution is provided.

(1) Rainwater is collected and used 

(2) Rainwater is distributed using a renewable energy source or 

gravity.

3) All toilets and urinals are in accordance with Section 802.2 

(2). 

802.2 Composting or waterless toilets and/or urinals. 

Composting or waterless toilets and/or urinals are in 

accordance with the following: (For water closets, points 

awarded for either Section 802.2 or 801.6, but not both) 

(5) Soaker hose

(6) Subsurface irrigation

1) designed by a professional in accordance with EPA 

WaterSense requirements or equivalent

801.7.2 Irrigation system is in accordance with both of the 

following: 

2) installed in accordance with EPA WaterSense program or 

equivalent 

(3) No irrigation is installed and a landscape plan is developed 

in accordance with Section 503.5(1) as applicable. (Points 

must be taken in 503.5(1) in order to receive points for 

801.7.4(3)

1) Gold and emerald levels: All water closets and urinals are in 

accordance with either Section 802.2 or Section 801.6. 

2) Composting or waterless toilet and/or urinal is installed. 

(Points awarded per fixture)

CHAPTER 9: INDOOR ENVIRONMENTAL QUALITY

801.9 Water Filters. Water filter is installed to improve water 

quality for the whole building or whole dwelling unit.

802.1 Gray water (as specified in ICC IRC, Appendix O) is 

separated and reused, as permitted by local building code. 

(Points awarded for either Section 802.1(1) or 802.1(2), not 

both)

(1) Excess Water Flow Shutoff

(2) Leak Detection System

802.3 Automatic shutoff water devices. One of the following 

automatic shutoff water supply devices is installed. Where a fire 

sprinkler system is present, installer is to ensure the device will 

not interfere with the operation of the fire sprinkler system

(1) Each water closet flushed by reclaimed or recycled water.

(2) Irrigation from reclaimed or recycled water onsite

(4) Drip emitters

801.7 Irrigation systems 

801.5.2 Self-closing valve, motion sensor, metering, or pedalactivated faucet is installed to enable intermittent on/off 

operation. (Points awarded per fixture.)

4) All water closets and all urinals are in accordance with 

Section 801.6(2) or Section 801.6(3), as applicable. 

(3) A urinal is installed with a flush volume of 0.5 gallons or 

less when tested in accordance with ASME A112.19.2.

(1) Gold and Emerald Levels: All water closets and urinals are 

in accordance with either Section 801.6 or 802.2.

801.7.1 A low-volume, irrigation system is installed for each 

landscape type utilized: (Points awarded for each type of 

irrigation system installed.)

(4) All shower compartments installed meet the above 

conditions and are 1.6 to less than 2.0 gpm. 

801.5 Faucets

(1) a bathroom (Points awarded for each bathroom.)

(2) all lavatory faucets in the home meet the conditions of 

801.5.1
406 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Cost/Point

5

5

5 0 not in garage.

At switch to gas (silver), DHW must be 

direct vent.

5 5 0

3

5 5 0

2

5 5 0 -5 0

7

N/A

4

N/A

6

N/A

6

N/A

6

N/A

6

N/A

7 7 0 

Met

Mandatory 

2 Points

N/A

Mandatory 

2 Points

n/a

4

10 10 0 

10 points 

max.

Mandatory

0

2 Points per 

Product Group

901 Pollutant Source Control

901.0 Intent. Pollutant sources are controlled. 

901.1 Space and water heating options

901.1.3 The following combustion space heating and water 

heating equipment is installed within conditioned space. 

(1) Direct vent furnace or boiler

(2) (a) Power vent water heater

901.1.1 Natural draft space heating or water heating equipment 

is not located in conditioned spaces, including conditioned crawl 

spaces. Natural draft equipment is permitted to be installed 

within the conditioned spaces if located in a mechanical room 

that has an outdoor air source, and is otherwise sealed and 

insulated to separate it from the conditioned space(s).

901.1.2 Air handling equipment or return ducts are not located 

in the garage, unless placed in isolated, air-sealed mechanical 

rooms with an outside air source. 

 (b) Direct vent water heater

901.2.1(2)(b) Factory-built wood burning fireplaces are in 

accordance with the certification requirements of UL 127 and 

are EPA certified.

901.1.4 The following electric equipment is installed:

1) Heat pump air handler in unconditioned space

2) Heat pump air handler in conditioned space 

901.2.1(1) Natural gas and propane fireplaces that are power 

vented or direct vented, are equipped with permanently fixed 

glass fronts or gasketed doors, and comply with ANSI 

Z21.88/CSA 2.33a or ANSI Z21.50/CSA 2.22 

901.2 Fireplaces and Fuel Burning Appliances (except cooking 

appliances, clothes dryers, water heaters, and furnaces) located 

in conditioned space are code compliant, vented to the 

outdoors, and have adequate combustion and ventilation air 

provided to minimize spillage or back-drafting, in accordance 

with the following: All of the following items are mandatory, if 

applicable, for certification.

901.2.1(2)(a) Wood burning fireplaces are equipped with 

gasketed doors designed to operate with the doors closed, 

outside combustion air, and a means is provided for sealing the 

flue to minimize interior air (heat) loss when not in operation.

901.2.1(2)(c) Wood stove and fireplace inserts, as defined in UL 

1482, Section 3.8 are in accordance with the certification 

requirements of UL 1482 and are in accordance with the 

emission requirements of the EPA Certification and the State of 

Washington W

901.2.1(2)(d) Pellet (biomass) stoves and furnaces are in 

accordance with the requirements of ASTM E1509 or are EPA 

Certified. 

901.2.1(2)(e) Masonry heaters are in accordance with the 

definitions in ASTM E1602 and ICC IBC, Section 2112.1. 

901.2.2 Fireplaces, woodstoves, pellet stoves, or masonry 

heaters are not installed. 

901.3(1)(b) A continuous air barrier is provided between walls 

and ceilings separating the garage space from the conditioned 

living spaces. 

901.3(1)(c) For one and two-family dwelling unit attached 

garages, a 100 cfm or greater ducted, or 70 cfm or greater 

unducted wall exhaust fan is installed and vented to the 

outdoors, designed and installed for continuous operation, or 

has controls (e.g., motion detectors, pressure switches) that 

activate operation for a minimum of 1 hour when either human 

passage door or roll-up automatic doors are operated. For 

ducted exhaust fans, the fan airflow rating and duct sizing are in 

accordance with Appendix A. (If you claim points for 

901.3(1)(c), you cannot claim points for 901.3(2). 

901.3(2) A carport is installed, the garage is detached from the 

building, or no garage is installed. (If you claim points for 

901.3(2), you cannot claim points for 901.3(1)(a), 901.3(1)(b), or 

901.3(1)(c).

901.3 Garages are in accordance with the following:

901.3(1)(a) Where installed in the common wall between the 

attached garage and conditioned space, the door is tightly 

sealed and gasketed. 

(2) Particleboard and MDF (medium density fiberboard) is 

manufactured and labeled in accordance with CPA A208.1 and 

CPA A208.2, respectively.

901.4(2-6) Wood Materials. A minimum of 85% of material 

within a product group (i.e. wood structural panels, countertops, 

composite trim/doors, custom woodwork, and/or component 

closet shelving) is manufactured in accordance with the 

following: 

901.4(1) Structural plywood used for floor, wall, and/or roof 

sheathing is compliant with DOC PS 1 and/or DOC PS 2. OSB 

used for floor, wall, and/or roof sheathing is compliant with DOC 

PS 2. The panels are made with moisture-resistant adhesives. 

The trademark indicates these adhesives as follows: Exposure 1 

or Exterior for plywood, and Exposure 1 for OSB. 
APPENDIX B 407

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2 Points per 

Product Group

3 Points per 

Product Group

4 Points per 

Product Group

4 0 Interior doors and trim and cabinets.

4 Points per 

Product Group

4 0 

Mandatory

0 Complies

6 6 0

2 2 0

2 2 0

6

6 1,987 Specify kitchen and baths to meet this. 

Currently showing SV (sheet vinyl?) on 

architecturals with specs not sustainable; 

area is approx. 321 sf. at $2.50 

differential.

4

4 1,513 Specify gypsum to meet this; must be 

similar to densarmor,etc. (used 

manufacturer's estimate of $2.30 for CFA 

for cost)

5

5 329 Specify in CSIs. allowed .50/sf

8

5

5

108

4 1/2 Case of caulk (add to base).

5

5

Because carpet should be specced for 

recycled content see that it complies here, 

as well.

901.5(2) A minimum of 85% of installed carpet area, carpet 

cushion (padding), and carpet adhesives are in accordance with 

the emission levels of CDPH 01350, as certified by a third-party 

program, such as the Carpet and Rug Institute’s (CRI) Green 

Label Pl

(a) Carpet

(b) Carpet cushion

901.5 Carpets are in accordance with the following:

901.5(1) Wall-to-wall carpeting is not installed adjacent to water 

closets and bathing fixtures .

901.7 Wall coverings. A minimum of 85% of wall coverings are 

in accordance with the emission concentration limits of CDPH 

01350 (using the office scenario), as certified by a third-party 

program, such as the Scientific Certification Systems (SCS) 

Indoor Advantage Gold Program or the Greenguard 

Environmental Institute's Children and Schools Certification 

Program. 

901.8 Architectural coatings. A minimum of 85% of the 

architectural coatings are in accordance with one of the 

following conditions:

(c) Carpet adhesives

901.6 Hard-surface flooring. A minimum of 85% of installed 

hard-surface flooring is in accordance with the emission 

concentration limits of CDPH 01350 (using the office scenario), 

as certified by a third-party program, such as the RFCI's 

FloorScore Indoor Air Certification Program or the Greenguard 

Environmental Institute's Children and Schools Certification 

Program. 

(2) CARB Suggested Control Measure for Architectural 

Coatings 

(3) GS-11

901.8.1 Site-applied interior products are in accordance with 

one or more of the following: 

(1) Zero VOC, determined by EPA Method 24 (VOC content 

below the detection limit for the method). 

(b) 100 grams/liter non flat

(c) 350 grams/liter clear wood varnish

(4) VOC limits in accordance with:

(a) 50 grams/liter flat 

901.9.1 For exterior low-VOC adhesives and sealants, a 

minimum of 85% of site-applied products used for the 

installation of subfloors and on the exterior of the project are in 

accordance with one of the folllowing: 

(1) The California Air Resources Board consumer products 

regulation as follows: 

(d) 550 grams/liter clear wood lacquer 

901.8.2 Site-applied interior products are in accordance with the 

emissions levels of CDPH 01350, as certified by a third party 

program such as the Scientific Certification Systems (SCS) 

Indoor Advantage Gold Program or the Greenguard 

Environmental Institute's Children and Schools Certification 

Program.

901.9 Adhesives and Sealants. 

c) The VOC content of all other caulks and sealants not to 

exceed 2% by weight or 30 grams/liter, whichever is greater.

(d) The VOC content of contact adhesives not to exceed 55% 

by weight or 480 grams/liter, whichever is greater.

(2) GS-36

a) Construction Adhesives: VOC content not to exceed 7% by 

weight or 75 grams/liter, whichever is greater. 

b) The VOC content of reactive sealants (i.e., silicones, 

polyurethanes, and hybrids, such as MS Polymer and silylated 

polyurethane resin or SPUR) not to exceed 4% by weight or 50 

grams/liter, whichever is greater.

(2) GS-36

901.9.2 Interior Low-VOC Adhesives and Sealants. For interior 

low VOC adhesives and sealants, a minimum of 85% of siteapplied products used within the interior of the building are in 

accordance with one of the following, as applicable:

1) CDPH 01350, as certified by a third party program, such as 

Scientific Certification Systems (SCS) Indoor Advantage Gold 

Program or the Greenguard Environmental Institute's Children 

and Schools Certification Program.

(4) Particleboard, MDF, or hardwood plywood is in accordance 

with CPA 2.

(3) Hardwood plywood is in accordance with HPVA HP-1 and 

HUD Title 24, Part 3280.

(5) Composite wood or agrifiber panel products contain no 

added urea-formaldehyde or are in accordance with the CARB 

Composite Wood Air Toxic Contaminant Measure Standard.

(6) Non-emitting products. 
408 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

2 2 0 (2) Specify.

3

5

5 0 Require better spec on cabinets

4

4 0 Specify. Note that most ducts are in 

conditioned space, so duct insulation will 

be minimal. Note planning time is thought 

to be burden here- project o/h not 

reported.

1

1 0 Specify

3

3 0 CO detector is standard, however move to 

bedroom vicinity. 

1

1 44

1

1

1 0 Assumption is that local legislation 

requires this.

Mandatory

0 Allign specs with this. 

Mandatory 0 Complies.

8

9 Points Max

5

5 90 timer is standard, but with a run time vent - 

makes more sense to install humidistat, as 

well.

2

8

8 149 2 field personell 2 hours. Note: kitchen 

cfm probably high for unit size.

Max. 6 

Points

2

3

8

8 0 Runtime ventilation is standard.

10

15

17

(2) Formaldehyde emissions of duct insulation materials are in 

accordance with the emissions levels of CDPH 01350, as 

certified by a third-party program, such as the GREENGUARD 

Environmental Institute's Children and Schools Certification 

Program or the Scientific Certifications Systems (SCS) Indoor 

Advantage Gold Program.

901.10 Cabinets. A minimum of 85% of kitchen and bath vanity 

cabinets are in accordance with one of the following: (Where 

more than one of the following practices is used, the 

practice with the fewer number of points is awarded)

(1) Kitchen and bath vanity cabinets in accordance with KCMA 

ESP 01, or equivalent, are installed.

901.11 Insulation is in accordance with the following: 

(1) Formaldehyde emissions of wall, ceiling, and floor insulation 

materials are in accordance with the emissions levels of CDPH 

01350, as certified by a third-party program, such as the 

GREENGUARD Environmental Institute's Children and Schools 

Certification Program or theScientific Certifications Systems 

(SCS) Indoor Advantage Gold Program.

(2) Kitchen and bath vanity cabinets in accordance with CARB 

Composite Wood Air Toxic Contaminant Measure Standard are 

installed. 

(3) Kitchen and bath vanity cabinets are installed that contain 

no added urea formaldehyde or are in accordance with 

GGPS.EC.010.R0, ASTM D6670, or equivalent. 

901.12 A carbon monoxide (CO) alarm is installed in a central 

location outside of each separate sleeping area in the 

immediate vicinity of the bedrooms. The CO alarm(s) is located 

in accordance with NFPA 720 and is hard-wired with a battery 

back-up. The alarm device(s) is certified by a third party for 

conformance with either CSA 6.19 or UL 2034.

901.13 Building entrance pollutants control. Pollutants are 

controlled at all main building entrances by one of the following 

methods: 

(1) Exterior grilles or mats are installed in a fixed manner and 

may be removable for cleaning. 

(2) Interior grilles or mats are installed in a fixed manner and 

may be removable for cleaning. 

901.14 Non-smoking areas. All interior common areas of a multiunit building are designated as non-smoking areas with posted 

signage.

902 Pollutant Control

902.0 Intent. Pollutants generated in the building are

controlled. 

902.1.1 Spot ventilation is in accordance with the following:

(1) Bathrooms (including powder rooms) are vented to the 

outdoors. The minimum ventilation rate is 50 cfm for intermittent 

operation or 20 cfm for continuous operation in bathrooms. 

(2) Clothes dryers are vented to the outdoors. 

(3) Kitchen exhaust units and/or range hoods are ducted to the 

outdoors and have a minimum ventilation rate of 100 cfm for 

intermittent operation or 25 cfm for continuous operation. 

1) for first device

902.1.2 Bathroom and/or laundry exhaust fan is provided with 

an automatic timer and/or humidistat: 

(1) Exhaust or supply fan(s) ready for continuous operation and 

with appropriately labeled controls.

(2) Balanced exhaust and supply fans with supply intakes 

located in accordance with the manufacturer's guidelines to not 

introduce polluted air back into the building. 

2) for each additional device

902.1.4 Exhaust fans are ENERGY STAR as applicable. 

902.1.3 Kitchen range, bathroom, and laundry exhaust are 

verified to specification. Ventilation airflow at the point of 

exhaust is tested to a minimum of 100 cfm intermittent or 25 

cfm continuous for kitchens, and 50 cfm intermittent or 20 cfm 

continuous 

(1) ENERGY STAR, or equivalent, fans (Points awarded per 

fan) 

(2) ENERGY STAR, or equivalent, fans operating at or below 1 

sone (Points awarded per fan)

902.2. Building ventilation systems. 

902.2.1 One of the following whole building ventilation systems 

is implemented and is in accordance with the specifications of 

Appendix B. (Points must be claimed in 902.2.1 to claim 

points in 902.2.2.

(3) Heat-recovery ventilator.

(4) Energy-recovery ventilator.
APPENDIX B 409

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

8

8 94 2 techs 1 hour.

3

3 0

Mandatory 0 Cuyoga cty is moderate, zone 2

10

15

10

3

0

3

3 0 Add to spec

5

2

N/a - attic access is in public area closets - 

may not apply.

2 2 0 Included in air sealing cost 702.

2 2 0

2 2 0

Mandatory

0 Doesn't Comply. Needs to be specified

Mandatory 0 Doesn't comply - better spec needed.

3

3 27 Add to specifications.

6

Mandatory

0 Doesn't comply. Add to specs.

n/a

10

8

2 Points 

2 0 Add to specs.

(a) Attic/ceiling

903 Moisture Management: Vapor, Rainwater, Plumbing, 

HVAC

902.6 Living space contaminants. The living space is sealed to 

prevent unwanted contaminants.

(1) Attic access, knee wall door, or drop down stair is caulked, 

gasketed, or otherwise sealed. 

(2) All penetrations (e.g., top plates, HVAC register boots, 

recessed can lights, are sealed in the following areas:

(b) Wall

b. In Dry climate locations, as defined by Figure 6(1), 

polyethylene sheeting is not required unless required for radon 

resistance (Section 902.3).

903.2.2 Add a capillary break on footing to prevent moisture 

migration into foundation wall. 

Modification for 1&2:

a. In areas with free-draining soils, identified as Group 1 in the 

ICC IRC by a certified hydrologist, soil scientist, or engineer 

through a site visit, a gravel bed or geotextile matting is not 

required.

903.3 Crawlspaces

903.3.1(2) Damp-proof walls are provided below finished grade. 

Joints of vapor retarder overlap a minimum of 6 inches and are 

taped.

903.0 Intent. Moisture and moisture effects are controlled. 

903.1 Tile backing materials installed under tiled surfaces in wet 

areas are in accordance with ASTM C1178, C1278, C1288, or 

C1325. 

2) A minimum 4-inch thick uniform layer of sand, overlain with 

a layer or strips of geotextile drainage matting, covered with 

polyethylene sheeting, with the sheeting joints lapped according 

to Section 903.3.

903.2.1 A capillary break and vapor retarder are installed at all 

concrete slabs in accordance to the following:

1) A minimum 4-inch thick bed of 1⁄2 inch diameter or greater 

clean aggregate, covered with polyethylene or polystyrene 

sheeting in direct contact with the concrete slab, with the 

sheeting joints lapped in accordance with Section 903.3. (or)

903.2 Capillary breaks

(c) Floors

902.2.2 Ventilation airflow is tested to achieve the design fan 

airflow at point of exhaust in accordance with Appendix B. 

(Points must be claimed in 902.2.1 to claim points in 

902.2.2) 

902.2.3 MERV filters 8 or greater are installed on central air 

systems. Designer or installer is to verify that the HVAC 

equipment is able to accommodate the greater pressure drop of 

MERV 8 filters. 

(2) 6-mil polyethylene sheeting, lapped a minimum of 6 inches 

and taped at the seams. 

903.4 Moisture control measures. 

903.4.1(1) Building materials with visible mold are not installed 

or are cleaned or encapsulated prior to concealment and 

closing.

903.3.1(1) Minimum 6-mil vapor retarder installed on the crawl 

space floor and extended up the wall sufficient to allow the 

material to be affixed with glue and furring strips. Joints of vapor 

retarder overlap a minimum of 6 inches and are taped.

(1) HVAC supply registers (boots), return grilles, and rough-ins 

are covered during construction activities to prevent dust and 

other pollutants from entering the system. Note: Points not 

allowed for both 902.4(1) and (2)

(2) Prior to owner occupancy, HVAC supply registers (boots), 

return grilles, and duct terminations are inspected and 

vacuumed. In addition, the coils are inspected and cleaned and 

the filter is replaced if necessary. 

902.5 Central vacuum systems. Central vacuum system is 

installed and vented to the outside.

902.4 HVAC system protection. One of the following HVAC 

system protection measures is performed: 

(b) An active radon system is installed.

902.3(2) Buildings located in Zone 2. 

(a) A passive radon system is installed. 

902.3 Radon control. Radon control measures are in 

accordance with ICC IRC Appendix F. (Zones are defined in 

Figure 9(1). 

902.3(1) Buildings located in Radon Zone 1 have a radon 

system installed.

(a) A passive radon system is installed. 

903.3.2 Crawlspace that is built as a conditioned area is sealed 

to prevent outside air infiltration and provided with conditioned 

air at a rate not less than 0.02 cfm per square foot of horizontal 

area and one of the following is implemented:

(1) A concrete slab over lapped 6 mil polyethylene or 

polystyrene
410 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory 

2 Points

0 0 Add to specs. Note points were not 

assigned because fg batts were specced, 

and thus n/a was checked. Technically, 

any insulation must be kept of the 

weather, thus points might be applied 

here.

4

4 0 Include in site superintendants 

responsibilities

2

2 0 Add to specs.

2

2 0 P201.

2

n/a

5 5 0 P201.

Mandatory

0 Complies all ducts are in conditioned.

2

8 Points 

n/a

2

2

Base Pts.

6 0 10 250 0 0 0 0 0 0 Ch. 10 Subtotal 

6

6 0

(1) HVAC filters.

(3) Lighting controls.

(4) Appliances and settings.

(5) Water heater settings.

(6) Fan controls.

1003 Construction, Operation and 

Maintenance Manuals and Training for MultiUnit Buildings

1 1 100

Mandatory 0.5

Mandatory 0.5 150

1002 TRAINING OF BUILDING OWNERS ON OPERATION 

AND MAINTENANCE FOR ONE- AND TWO-FAMILY 

DWELLINGS AND MULTI-UNIT BUILDINGS

903.5.3 Plumbing is not installed in unconditioned spaces.

903.5 Plumbing. 

903.4.1(3) The moisture content of lumber is sampled to ensure 

it does not exceed 19 % prior to the surface and/or wall cavity 

enclosure. 

903.4.2 Moisture content of subfloor, substrate, or concrete 

slabs is in accordance with the appropriate industry standard for 

the finish flooring to be applied. 

1002.1 Training of building owners. Building owners/occupants

are familiarized with the green building goals and strategies

implemented and the impacts of the occupants’ practices on the

costs of operating the building. Training is provided to the

responsible party(ies) regarding all equipment operation and

control systems. Systems include, but are not limited to, the 

904 Innovative Practices

904.1 A humidity monitoring system is installed with a mobile 

base unit that displays a reading of temperature and relative 

humidity at the base unit with a minimum of two remote units. 

One remote unit that is placed permanently inside the 

conditioned space in a central location, excluding attachment to 

exterior walls, and another remote unit is placed permanently 

outside of the conditioned space.

903.5.1 Plumbing distribution lines are not installed in exterior 

wall cavities.

903.5.2 Cold water pipes in unconditioned spaces are insulated 

to a minimum of R-4 with pipe insulation or other covering that 

adequately prevents condensation.

903.6(1) Duct insulation. All HVAC ducts, plenums, and trunks 

in unconditioned attics, basements, and crawlspaces are 

insulated to a minimum of R-6. Outdoor air supplies to 

ventilation systems are insulated to a minimum of R-6.

903.6(2) Duct insulation. All HVAC ducts, plenums, and trunks 

in unconditioned attics, basements, and crawlspaces are 

insulated to a minimum of R-8. Outdoor air supplies to 

ventilation systems are insulated to a minimum of R-8.

903.7 Relative Humidity. In climate zones 1A, 2A, 3A, 4A, and 

5A as defined by Figure 6(1), equipment is installed to maintain 

relative humidity (RH) at or below 60% using one of the 

following: 

903.9.1 In “Warm-Humid” climates as defined by Figure 6(1) 

equipment is installed to maintain Relative Humidity (RH) at or 

below 60% using one of the following:

(1) Additional dehumidification system(s)

(2) Central HVAC system equipped with additional controls to 

operate in dehumidification mode.

904.2 Kitchen exhaust unit(s) that equal or exceeds 400 cfm, 

and make-up air is provided.

903.4.1(2) Walls are not enclosed (e.g. with drywall) if the 

insulation has a high moisture content. Wet insulation products 

are dry before enclosing. 

(1)A narrative detailing the importance of constructing a green 

building, including a list of green building attributes included in 

the building. This narrative is included in all responsible parties’ 

manuals.

(2) A local green building program certificate as well as a copy

of the National Green Building Standard TM , as adopted by the

Adopting Entity, and the individual measures achieved by the

building.

CHAPTER 10: OPERATION, MAINT., AND BUILDING 

OWNER EDUCATION

1003.0 Intent. Manuals are provided to the responsible parties 

(owner, management, tenant, and/or maintenance team) 

regarding the construction, operation, and maintenance of the 

building. Paper or digital format manuals are to include 

information regarding those aspects of the building’s 

construction, maintenance, and operation that are within the 

area of responsibilities of the respective recipient. One or more 

responsible parties are to receive a copy of all documentation 

for archival purposes.

1003.1 Building construction manual. A building construction

manual, including five or more of the following, is compiled

and distributed in accordance with Section 1003.0.

(2) Thermostat operation and programming.
APPENDIX B 411

258 NOTES:

Points Cost Points Cost Points Cost Points Cost Points Cost

ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald

Mandatory 0.5

(4) Record drawings of the building.

0.5

0.5

1

1

Mandatory 0.5

Mandatory 0.5

Mandatory 0.5

0.5

0.5

(6) Local public transportation options. 0.5

0.5

1

1

Mandatory

0.5

0.5

a) HVAC filters

c) ighting controls

d) appliances and settings

e) water heater settings

f) fan controls

1004

INNOVATIVE PRACTICES

(10) A procedure for educating tenants in rental properties on

the proper use, benefits, and maintenance of green building

systems including a maintenance staff notification process for

improperly functioning equipment.

(8) A procedure for rental tenant occupancy turnover that 

preserves the green features.

(4) List of common hazardous materials often used around the

building and instructions for proper handling and disposal of

these materials.

(9) An outline of a formal green building training program for 

maintenance staff.

(6) Instructions for maintaining gutters and downspouts and the 

importance of diverting water a minimum of 5 feet away from (7) Instructions for inspecting the building for termite infestation.

(3) User-friendly maintenance checklist that includes:

b) thermostat operation and programming

1003.3 Maintenance manual. Maintenance manuals are

created and distributed to the responsible parties in accordance

with Section 1003.0. Between all of the maintenance manuals,

five or more of the following options are included.

(Points awarded per two items. Points awarded for both 

mandatory and non-mandatory items.)

(5) Information on local and on-site recycling and hazardous

waste disposal programs and, if applicable, building recycling

and hazardous waste handling and disposal procedures.

(7) Explanation of the benefits of using compact fluorescent

light bulbs, LEDs, or other high-efficiency lighting.

(8) Information on native landscape materials and/or those that

have low water requirements.

(9) Information on the radon mitigation system, where

applicable.

(3)Warranty, operation, and maintenance instructions for all

equipment, fixtures, appliances, and finishes.

(5) A record drawing of the site including stormwater

management plans, utility lines, landscaping with common

name and genus/species of plantings.

(6) A diagram showing the location of safety valves and controls

for major building systems.

(7) A list of the type and wattage of light bulbs installed in light

fixtures.

1004.1 (Reserved)

(8) A photo record of framing with utilities installed. Photos are

taken prior to installing insulation and clearly labeled.

(5) Information on organic pest control, fertilizers, deicers, and

cleaning products.

(1) A narrative detailing the importance of operating and living

in a green building. This narrative is included in all responsible

parties’ manuals.

(4) Information on opportunities to purchase renewable energy

from local utilities or national green power providers and

information on utility and tax incentives for the installation of onsite renewable energy systems.

(2)(A list of practices to conserve water and energy (e.g.,

turning off lights when not in use, switching the rotation of

ceiling fans in changing seasons, purchasing ENERGY STAR

appliances and electronics).

(3) Information on methods of maintaining the building’s relative

humidity in the range of 30 percent to 60 percent.

(2) A list of local service providers that offer regularly scheduled

service and maintenance contracts to ensure proper

performance of equipment and the structure (e.g., HVAC, waterheating equipment, sealants, caulks, gutter and downspout

system, shower 

(1) A narrative detailing the importance of maintaining a green

building. This narrative is included in all responsible parties’

manuals.

1003.2 Operations manual. Operations manuals are created

and distributed to the responsible parties in accordance with

Section 1003.0. Between all of the operation manuals, five or

more of the following options are included.

(Points awarded per two items. Points awarded for both 

mandatory and non-mandatory items.)
412 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX B 413

APPENDIX B 

GREEN SCORING & COST

5 — Retrofit – climate zone #4

A. Silver Spring, Maryland 

 i. Unit 1
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

NOTES: Gold Emerald Baseline Bronze Silver ANSI National Green Building StandardTM

Bronze. Re

391 Mandatory

within unit alaundry roolaundry rooheaters. OComplies. U

0 Mandatory0 

901

5(2) A minimum of 85% of installed carpet area

carpet cushion (padding)

901.5 Carpets are in accordance with the following:901.5(1) Wall-to-wall carpeting is not installed adjacent to water closets and bathing fixtures .901.1.1 Natural draft space heating or water heating equipment is not located in conditioned spaces, including conditioned crawl spaces. Natural draft equipment is permitted to be installed within the conditioned spaces if located in a mechanical room that has an outdoor air source, and is otherwise sealed and insulated to separate it from the conditioned space(s).

parison 2/22/2010

Remodel

reen Building StandardTM

485 sf Baseline Bronze Silver Gold Emerald

2 occupants assumedEnergy Efficiency Minimum e-ratio 2.15 1.72 1.42 1.23 1.08Water Efficiency (gpd) 51 41 34 29 26IEQ Requirements Not Met Met Met Met MetTotal

hich energy performance compares to

006 with 1.00 representing code min. E-Ratio 1.67 1.20 1.08 0.99

cy is calced at number of bedrooms Gallons 40 34 29 25

yer are not included. Cost Cost Cost Cost

ed during one site visit with units Energy 1,387 1,400 2,743 2,329

Water 131 52 338 344IEQ 981 0 0 0

Cumulative total 2,499 3,951 7,032 9,704

Cost/SF ($) 5.15 8.15 14.50 20.01

Baseline Bronze Silver Gold Emerald NOTES:

20% 1,387 Bronze. Replace both entry doors for airtight 

seal; reduce air infiltration to 0.90 ACHnat (a 30% improvement). Caulk or reseat windows as required, gaskets at receptacles; ducts within conditioned space (new ducting with 6% leakage and existing bulkheads). Note that there was indication that building cavities may have been used for ducts. 

34% 1,400 

Silver: upgrade to 82% water heater - tankless.

43% 2,743 (2,743) Gold: 90% furnace; SEER 13 A/C; 50% 5,072 Emerald: 96% furnace; SEER 16 A/C

2 gpm 79 Install 1.0 gpm showerhead2 gpm 52

3 gpm 52

1.6 gpm 256 Install dual flush toilet.

338 (338)

New common washer in basement divided by 4 

units.

425

New common washer in basement divided by 4 

units.Note: Aerators that restrict flow could reduce faucet costs.

 Building StandardTM
ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald NOTES:

Mandatory 391 Bronze. Re

within unit alaundry roolaundry rooheaters. OComplies. U

Mandatory 0 

0 

Mandatory 0 Mandatory 0 Mandatory 0 

0 

Mandatory

365 Install fan i

existing bu

the wall. Us

Mandatory 0 Complies. DMandatory

134 Add 100 cf

Mandatory

0 See 902.1.

Mandatory

91 Vacuum du

Allowed 2 h

0

Mandatory

0 Complies. 

904.3 Renovation Note: Existing unsealed combustion gas dryer vents related to renovations.(1) Esixting unsealed combustion gas dryer vent is replaced with a sealed exhaust vent.(2) Clothes dryers are vented to the outdoors. (3) Kitchen exhaust units and/or range hoods are ducted to the outdoors and have a minimum ventilation rate of 100 cfm for intermittent operation or 25 cfm 

for continuous operation. 902.1.2 Bathroom and/or laundry exhaust fan is provided with an automatic timer and/or humidistat: 902.1.1 Spot ventilation is in accordance with the following:(1) Bathrooms (including powder rooms) are vented to the outdoors. The minimum ventilation rate is 50 cfm for intermittent operation or 20 cfm for continuous operation in bathrooms. 902.4(2) Prior to owner occupancy, HVAC supply registers (boots), return grilles, and duct terminations are inspected and vacuumed. In addition, the coils are inspected and cleaned and the filter is replaced if necessary. 901.5(2) A minimum of 85% of installed carpet area, carpet cushion (padding), and carpet adhesives are in accordance with the emission levels of CDPH (a) Carpet(b) Carpet cushion(c) Carpet adhesives901.5 Carpets are in accordance with the following:901.5(1) Wall-to-wall carpeting is not installed adjacent to water closets and bathing fixtures .901.1.1 Natural draft space heating or water heating equipment is not located in conditioned spaces, including conditioned crawl spaces. Natural draft equipment is permitted to be installed within the conditioned spaces if located in a mechanical room that has an outdoor air source, and is otherwise sealed and insulated to separate it from the conditioned space(s).
416 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX B 417

APPENDIX B 

GREEN SCORING & COST

 ii. Unit 2
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

een Building StandardTM

820 sf Baseline Bronze Silver Gold Emerald

occupants assumed

nergy Efficiency Minimum e-ratio 1.51 1.21 1.00 0.86 0.76

Water Efficiency gpd 43 35 29 25 22

EQ Requirements Not Met Met Met Met Met

otal

ch energy performance compares to

06 with 1.00 representing code min. E-Ratio 1.19 0.93 0.83 0.72

 is calced at number of bedrooms Gallons 32 27 24 22

er are not included. Cost Cost Cost Cost

 during one site visit with units Energy 1,772 928 4,667 4,500

Water 390 140 0 256IEQ 590 0 0 0

Cummulative Total 2,752 3,819 8,486 13,242

Cost/SF ($) 3.36 4.66 10.35 16.15

Baseline Bronze Silver Gold Emerald NOTES:

20% 1,772 (472) Bronze. Replace entry doors for airtight seal; 

reduce air infiltration to 0.74 ACHnat (a 30% improvement). Caulk or reseat windows as required, gaskets at receptacles; ducts within conditioned space (new ducting with 6% leakage and existing bulkheads). New hot water heater with 0.60 EF Note that there was indication that building cavities may have been used for ducts. 

34% 1,400 

Silver: upgrade to 82% water heater - tankless.

43% 4,667 Gold: 9.0 heat pump; SEER 15 A/C; 50% 4,500 Emerald: 32 sf closed loop solar dhw

1.0

3 gpm 52

Install 1.6 gpm faucet or aerator at bronze and 1.0 at gold

1.5 gpm 52 Install 1.0 gpm faucet or aerator at silver

1.6gpm 256 Install dual flush toilet.

338 (338)

New common washer in basement divided by 4 units.

425

New common washer in basement divided by 4 units. EStar washer with WF<6.

Mandatory

0

n/a heat pump or DV equipment.

0 Complies. Floor is hardwood. 

er heating equipment is not located 

ed crawl spaces. Natural draft 

n the conditioned spaces if located in 

 source, and is otherwise sealed and 

d space(s).

ollowing:

uilding StandardTM
Mandatory 0 

0 

Mandatory

0 

Mandatory

0 

Mandatory

0 

0 

Mandatory

365 Install fan in bathroom. I

existing bulkheading and the wall. Use existing circ

Mandatory 0 Complies. Dryer is not in 

Mandatory

134 Add 100 cfm fan at exha

Mandatory

0 See 902.1.1(1)

Mandatory

91 Vacuum ducts, service c

Allowed 2 hours of labor 

0

Mandatory

0 Complies. Dryer is outsid

901.5(1) Wall-to-wall carpeting is not installed adjacent to water closets and bathing fixtures .901.5(2) A minimum of 85% of installed carpet area, carpet cushion (padding), 

and carpet adhesives are in accordance with the emission levels of CDPH (a) Carpet(b) Carpet cushion(c) Carpet adhesives902.1.1 Spot ventilation is in accordance with the following:(1) Bathrooms (including powder rooms) are vented to the outdoors. The minimum ventilation rate is 50 cfm for intermittent operation or 20 cfm for continuous operation in bathrooms. (2) Clothes dryers are vented to the outdoors. (1) Esixting unsealed combustion gas dryer vent is replaced with a sealed exhaust vent.(3) Kitchen exhaust units and/or range hoods are ducted to the outdoors and have a minimum ventilation rate of 100 cfm for intermittent operation or 25 cfm for continuous operation. 902.1.2 Bathroom and/or laundry exhaust fan is provided with an automatic timer and/or humidistat: 902.4(2) Prior to owner occupancy, HVAC supply registers (boots), return grilles, and duct terminations are inspected and vacuumed. In addition, the coils are inspected and cleaned and the filter is replaced if necessary. 904.3 Renovation Note: Existing unsealed combustion gas dryer vents related to renovations.
420 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX B 421

APPENDIX B 

GREEN SCORING & COST

 iii. Unit 3
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

reen Building StandardTM

820 sf Baseline Bronze Silver Gold Emerald

3 occupants assumedEnergy Efficiency Minimum e-ratio 1.64 1.31 1.08 0.93 0.82Water Efficiency gpd 46 37 30 26 23IEQ Requirements Not Met Met Met Met MetTotal

hich energy performance compares to

006 with 1.00 representing code min. E-Ratio 1.29 1.04 0.90 0.78

cy is calced at number of bedrooms Gallons 34 27 24 22

yer are not included. Cost Cost Cost Cost

ed during one site visit with units Energy 1,922 2,129 3,691 6,746

Water 390 52 88 256IEQ 644 0 0 0

Cumulative total 2,956 5,137 8,915 15,917

Cost/SF ($) 3.60 6.26 10.87 19.41

Baseline Bronze Silver Gold Emerald NOTES:

20% 1,922 (622) Bronze. Replace entry door for airtight seal; 

reduce air infiltration to 1.046 ACHnat (a 30% improvement). Caulk or reseat windows as required, gaskets at receptacles; ducts within conditioned space (new ducting with 6% leakage and existing bulkheads). New hot water heater with 0.62 EF. Note that there was indication that building cavities may have been used for ducts. 

34% 2,751 (1,351) Silver: 82% tankless water heater. 13 SEER 

A/C

43% 5,042 (2,396) Gold: 15 SEER A/C. 96% gas furnace50% 9,142 Emerald: 18 SEER A/C. 32 sf close loop solar 

dhw

1

2.5 gpm 52 Install 1.0 gpm faucet or aerator.

2.5 gpm 52 Install 1.0 gpm faucet or aerator.

1.6gpm 256 Install dual flush toilet. 1.2 gpf

338 (338)

New common washer in basement divided by 4 units.

425

New common washer in basement divided by 4 units. EStar washer with WF<6.

 Building StandardTM
ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald NOTES:

Mandatory Complies. W

furnace is D

54 Complies. S

and living ro

Mandatory 0 

0 

Mandatory 0 Mandatory 0 Mandatory 0 

0 

Mandatory

365 Install fan in 

existing bulthe wall. Us

Mandatory 0 Complies. DMandatory

134 Add 100 cfm 

Mandatory

0 See 902.1.1

Mandatory

91 Vacuum du

Allowed 2 h

0

Mandatory

0 Complies. 

901.5 Carpets are in accordance with the following:901.5(1) Wall-to-wall carpeting is not installed adjacent to water closets and bathing fixtures .(1) Esixting unsealed combustion gas dryer vent is replaced with a sealed exhaust vent.(3) Kitchen exhaust units and/or range hoods are ducted to the outdoors and have a minimum ventilation rate of 100 cfm for intermittent operation or 25 cfm for continuous operation. 902.1.2 Bathroom and/or laundry exhaust fan is provided with an automatic timer and/or humidistat: 902.4(2) Prior to owner occupancy, HVAC supply registers (boots), return grilles, and duct terminations are inspected and vacuumed. In addition, the coils are inspected and cleaned and the filter is replaced if necessary. 904.3 Renovation Note: Existing unsealed combustion gas dryer vents related to renovations.902.1.1 Spot ventilation is in accordance with the following:(1) Bathrooms (including powder rooms) are vented to the outdoors. The minimum ventilation rate is 50 cfm for intermittent operation or 20 cfm for continuous operation in bathrooms. (2) Clothes dryers are vented to the outdoors. 901.5(2) A minimum of 85% of installed carpet area, carpet cushion (padding), and carpet adhesives are in accordance with the emission levels of CDPH 01350, as certified by a third-party program, such as the Carpet and Rug Institute’s (CRI) Green Label Pl(a) Carpet(b) Carpet cushion(c) Carpet adhesives901.1.1 Natural draft space heating or water heating equipment is not located in conditioned spaces, including conditioned crawl spaces. Natural draft 

equipment is permitted to be installed within the conditioned spaces if located in a mechanical room that has an outdoor air source, and is otherwise sealed and insulated to separate it from the conditioned space(s).
424 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX B 425

APPENDIX B 

GREEN SCORING & COST

 iv. Unit 4
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Green Building StandardTM

820 sf Baseline Bronze Silver Gold Emerald

3 occupants assumedEnergy Efficiency Minimum e-ratio 1.95 1.56 1.29 1.11 0.98Water Efficiency gpd 53 43 35 30 27IEQ Requirements Not Met Met Met Met MetTotal

hich energy performance compares to

2006 with 1.00 representing code min. E-Ratio 1.55 1.23 1.07 0.93

cy is calced at number of bedrooms Gallons 40 33 28 26

ryer are not included. Cost Cost Cost Cost

ed during one site visit with units Energy 1,772 2,279 2,268 5,851

Water 335 104 338 88IEQ 786 0 0 0Cum Total 2,893 5,276 7,881 13,820Cost/SF ($) 3.53 6.43 9.61 16.85

Baseline Bronze Silver Gold Emerald NOTES:

20% 1,772 (472) Bronze. Replace entry door for airtight seal; 

reduce air infiltration to 0.924 ACHnat (a 30% improvement). Caulk or reseat windows as required, gaskets at receptacles; ducts within conditioned space (new ducting with 6% leakage and bulkheads as needed). New 0.60 EF hot water heater. Note that there was indication that building cavities may have been used for ducts. 

34% 2,751 (1,351) 82% tankless water heater. 13 SEER A/C

43% 3,619 (3,619)

 15 SEER A/C. 92% Furnace

50% 9,470 16 SEER A/C. 96% furnace. 32 sf closed loop 

solar domestic hot water

2.5 gpm 79 Install 1.0 gpm showerhead

1.75 gpm 52 Install 1.0 gpm faucet or aerator.

2.0 gpm 52 Install 1.0 gpm faucet or aerator.

2.5 gpf 256 Install low flow toilet 1.6 gpf

338 (338)

New common washer in basement divided by 4 units.

425

New common washer in basement divided by 4 units. EStar washer with WF<6.

n Building StandardTM
ANSI National Green Building StandardTM Baseline Bronze Silver Gold Emerald NOTES:

Mandatory 196 Air seal fur

Complies. 

Mandatory 0 

0 

Mandatory

0 

Mandatory

0 

Mandatory

0 

0 

Mandatory

365 Install fan i

existing buthe wall. Us

Mandatory 0 Complies. Mandatory

134 Add 100 cf

Mandatory

0 See 902.1.

Mandatory

91 Vacuum du

Allowed 2 h

0

Mandatory

0 Complies. 

901.5 Carpets are in accordance with the following:901.5(1) Wall-to-wall carpeting is not installed adjacent to water closets and bathing fixtures .(1) Esixting unsealed combustion gas dryer vent is replaced with a sealed exhaust vent.(3) Kitchen exhaust units and/or range hoods are ducted to the outdoors and have a minimum ventilation rate of 100 cfm for intermittent operation or 25 cfm 

for continuous operation. 902.1.2 Bathroom and/or laundry exhaust fan is provided with an automatic timer and/or humidistat: 902.4(2) Prior to owner occupancy, HVAC supply registers (boots), return grilles, and duct terminations are inspected and vacuumed. In addition, the coils are inspected and cleaned and the filter is replaced if necessary. 904.3 Renovation Note: Existing unsealed combustion gas dryer vents related to renovations.902.1.1 Spot ventilation is in accordance with the following:(1) Bathrooms (including powder rooms) are vented to the outdoors. The minimum ventilation rate is 50 cfm for intermittent operation or 20 cfm for continuous operation in bathrooms. (2) Clothes dryers are vented to the outdoors. 901.5(2) A minimum of 85% of installed carpet area, carpet cushion (padding), and carpet adhesives are in accordance with the emission levels of CDPH (a) Carpet(b) Carpet cushion(c) Carpet adhesives901.1.1 Natural draft space heating or water heating equipment is not located in conditioned spaces, including conditioned crawl spaces. Natural draft equipment is permitted to be installed within the conditioned spaces if located in a mechanical room that has an outdoor air source, and is otherwise sealed and insulated to separate it from the conditioned space(s).
428 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX C 429

APPENDIX C

ENERGY MODELS

1 — Climate Zone #2

A. Baton Rouge, Louisiana

B. Bayou LaBatre, Alabama

2 — Climate Zone #3

A. Oakland, California

3 — Climate Zone #4

A. Richmond, Virginia

B. Seattle, Washington

4 — Climate Zone #5

A. Akron, Ohio – Townhouse

B. Akron, Ohio – Single Family Home

C. Cuyahoga, Ohio

5 — Retrofit – climate zone #4

A. Silver Spring, Maryland 

 i. Unit 1

 ii. Unit 2

 iii. Unit 3

 iv. Unit 4
430 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX C 431

APPENDIX C

ENERGY MODELS

1 — Climate Zone #2

A. Baton Rouge, Louisiana
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

CStd2006 Base Line House Bronze - 15% Silver - 30% Gold - 50% Emerald - 60% Emerald- 60%

0.90 0.85 0.70 0.46 0.46 0.41

88 85 73 62 62 57

2006 IECC

2006 IECC 

Compliance 

Standard Calc 

-Base

Percenta

ge Better 

than 

2006 

IECC

2006 IECC 

Compliance 

Standard 

Calc - 15%

2006 IECC 

Compliance 

Standard 

Calc - 30%

2006 IECC 

Compliance 

Standard 

Calc - 50%

2006 IECC 

Compliance 

Standard 

Calc - 60%

2006 IECC 

Compliance 

Standard 

Calc - 60%

910 910 910 910 910 910 910

1 1 1 1 1 1 1

Raised Floor Raised Floor Raised Floor Raised Floor Raised Floor Raised Floor Raised Floor

3 3 3 3 3 3 3

1 1 1 1 1 1 1

23.97 30 30 38 38 38 38

2x wood 2x6-24"oc CFS 2x6-24"oc CFS 2x6-24"oc 2x6-24"oc 2x6-24"oc 2x6-24"oc

9.85 19/0 19/0 19/5 19/5 19/5 19/5

11.34 19 19 38 38 38 38

1,101 1,101 1,101 1,101 1,101 1,101 1,101

0.75 0.34 0.34 0.34 0.34 0.34 0.340.40 0.31 0.31 0.31 0.31 0.31 0.31

146 146 145.67 145.67 145.67 145.67 145.67

16.01% 16.01% 16.01% 16.01% 16.01% 16.01% 16.01%

0.00036 0.00050 0.0005 0.0005 0.0005 0.0005 0.0005

6.3 8.7 8.74 8.74 8.74 8.74 8.74

none none none none none none

13 14 14 15 15 15 18

24 24 24 24 24 24 24

7.7 8.5 8.5 8.5 8.5 8.5 9

18 18 18 18 18 18 18

not given 0 0 0 0

20.00% 12.00% 6.00% 6.00% 6.00% 6.00% 6.00%

8 8 1 1 1 1

Inside Attic Attic Inside Inside Inside Inside

Inside Attic Attic Attic Attic Attic Inside

60 60.42 60.42 60.42 60.42 60.42 60.42

0.92 0.92 0.94 0.98 0.98 w/ ICS 0.98 w/ ICS 0.98 w/ ICS

40 40 40 1 1 Solar 1 Solar 1 Solar

78 78 78 78 78 78 78

68 68 68 68 68 68 68

No No Yes Yes Yes Yes Yes

none 2/6 2/6 2/6 2/6 2/6 2/6none 2/7 2/7 2/7 2/7 2/7 2/7

n/a 14% 14% 14% 14% 14% 14%

500 Watts None

196 155 20.92% 141 28.06% 108 44.90% 108 44.90% 108 44.90% 86 56.12%

100 93 7.00% 83 17.00% 42 58.00% 42 58.00% 42 58.00% 36 64.00%216 216 0.00% 210 2.78% 201 6.94% 80 62.96% 80 62.96% 80 62.96%

(40.00)

512 464 9.38% 434 15.23% 351 31.45% 230 55.08% 190 62.89% 202 60.55%

ach level.

 IECC number is manipulated to original, so saving increases over e-Ratio

 when there is no added ventilation @ 0.00036 (ashrea 62.2)

 from site generated energy and its application to an efficiency annalysis. So 2 - 60% runs show improved equipment versus adding 0.5 kw solar
Baton Rouge, LouisianaKC -910

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 177 161 16 9% 121 56 32% 121 56 32% 98 79 45%Heating Cost 73 65 8 11% 31 42 58% 31 42 58% 26 47 64%Hot Water Heating Cost 217 211 6 3% 203 14 6% 80 137 63% 80 137 63%HVAC & hwh Savings N/A 30 112 235 263

Appliances/MELs Savings N/A 0 31 31 31

Appliances/MELs Cost 585 585 554 554 554

HVAC & HWH sub-total 467 437 6% 355 24% 232 50% 204 56%

Grand Total 1052 1022 97% 909 86% 786 75% 758 72%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost

Silver

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost
434 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: KC - 910 Base TMY City: LA_BATON_ROUGE

Elec Util: baton rouge fixed

Baton Rouge, LA, - Gas Util: Louisiana Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 10:31:54

8/5/2010 10:32 AM EnergyGauge® USA - FlaRes2008 / 

worst case at 315

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1883 kWh $151

Heating 798 kWh $64

Hot Water 2714 kWh $217

Lighting 1537 kWh $123

Refrigerator 424 kWh $34

Dryer 1530 kWh $122

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

320 kWh $26

115 kWh $9

34.76 Lbs.

21.88 Lbs.

7.89 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water 2714 kWh $217

Total Heating 913 kWh $73

Total Cooling 2203 kWh $177

Dishwasher 106 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 70 kWh $6

2736 kWh $219

13142 kWh $1052

$1052
APPENDIX C 435

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

LKR

1

HUD Green

KC - 910 Base

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 315

No

1

910

3

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

LA , -

Baton Rouge , 

Street Address

Comment: worst case at 315

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 196 $ 155 0.79

Heating: $ 100 $ 93 0.93

Hot Water: $ 216 $ 216 1.00

Total: $ 512 $ 464 0.91

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ LA, BATON_ROUGE_RY LA_BATON_ROUGE_RY 2 29 94 75 70 1762 54 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

______ 1 Raised Floor 910 ft2 19 010

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1094 ft2 304 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 910 ft2 N N

8/5/2010 10:33 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
436 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 30 910 ft2 0.09 Metal

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 N Exterior Frame - Steel 19 234.75 ft2 0 0.2 0.5

______ 2 E Exterior Frame - Steel 19 315.75 ft2 0 0.2 0.5

______ 3 S Exterior Frame - Steel 19 234.75 ft2 0 0.2 0.5

______ 4 W Exterior Frame - Steel 19 315.75 ft2 0 0.2 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 N Insulated None 0.4 8 ft2 

______ 2 S Insulated None 0.4 8.89 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.34 0.31 N 32 ft2 4 ft 0 in 1 ft 0 in None None

______ 2 N Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 4 ft 0 in 1 ft 0 in None None

______ 3 E Vinyl Low-E Double Yes 0.34 0.31 N 48 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Vinyl Low-E Double Yes 0.34 0.31 N 10 ft2 3 ft 0 in 1 ft 0 in None None

______ 5 S Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 W Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 W Vinyl Low-E Double Yes 0.34 0.31 N 7.67 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00036 859 6.30 47.2 88.7 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 14 24 kBtu/hr 720 cfm 0.75 False

8/5/2010 10:33 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 437

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 8.5 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.92 40 gal 60.42 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Attic 8 246 ft2 Attic 91 ft2 DSE=0.88 Attic 34.95 cfm 0.00 % 0.00 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh baton rouge fixed 0 0.08

Natural Gas Therm Louisiana Average 0 1.09

Fuel Oil Gallon Louisiana Default 0 1.1

Propane Gallon Louisiana Default 0 1.4

8/5/2010 10:33 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
438 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: KC - 910 - 15% TMY City: LA_BATON_ROUGE

Elec Util: baton rouge fixed

Baton Rouge, LA, - Gas Util: Louisiana Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 10:34:29

8/5/2010 10:34 AM EnergyGauge® USA - FlaRes2008 / 

worst case at 315

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1714 kWh $137

Heating 718 kWh $57

Hot Water 2640 kWh $211

Lighting 1537 kWh $123

Refrigerator 424 kWh $34

Dryer 1530 kWh $122

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

295 kWh $24

100 kWh $8

33.81 Lbs.

21.28 Lbs.

7.67 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water 2640 kWh $211

Total Heating 818 kWh $65

Total Cooling 2009 kWh $161

Dishwasher 106 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 70 kWh $6

2736 kWh $219

12779 kWh $1022

$1022
APPENDIX C 439

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

LKR

1

HUD Green

KC - 910 - 15%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 315

No

1

910

3

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

LA , -

Baton Rouge , 

Street Address

Comment: worst case at 315

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 196 $ 141 0.72

Heating: $ 100 $ 83 0.83

Hot Water: $ 216 $ 210 0.97

Total: $ 512 $ 434 0.85

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ LA, BATON_ROUGE_RY LA_BATON_ROUGE_RY 2 29 94 75 70 1762 54 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

______ 1 Raised Floor 910 ft2 19 010

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1094 ft2 304 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 910 ft2 N N

8/5/2010 10:35 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
440 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 30 910 ft2 0.09 Metal

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 N Exterior Frame - Steel 19 234.75 ft2 0 0.2 0.5

______ 2 E Exterior Frame - Steel 19 315.75 ft2 0 0.2 0.5

______ 3 S Exterior Frame - Steel 19 234.75 ft2 0 0.2 0.5

______ 4 W Exterior Frame - Steel 19 315.75 ft2 0 0.2 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 N Insulated None 0.4 8 ft2 

______ 2 S Insulated None 0.4 8.89 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.34 0.31 N 32 ft2 4 ft 0 in 1 ft 0 in None None

______ 2 N Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 4 ft 0 in 1 ft 0 in None None

______ 3 E Vinyl Low-E Double Yes 0.34 0.31 N 48 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Vinyl Low-E Double Yes 0.34 0.31 N 10 ft2 3 ft 0 in 1 ft 0 in None None

______ 5 S Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 W Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 W Vinyl Low-E Double Yes 0.34 0.31 N 7.67 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00036 859 6.30 47.2 88.7 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 14 24 kBtu/hr 720 cfm 0.75 False

8/5/2010 10:35 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 441

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 8.5 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.94 40 gal 60.42 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Attic 8 246 ft2 Attic 91 ft2 Prop. Air Leakage Attic 43.20 cfm 6.00 % 0.05 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh baton rouge fixed 0 0.08

Natural Gas Therm Louisiana Average 0 1.09

Fuel Oil Gallon Louisiana Default 0 1.1

Propane Gallon Louisiana Default 0 1.4

8/5/2010 10:35 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
442 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: KC - 910 - 30% TMY City: LA_BATON_ROUGE

Elec Util: baton rouge fixed

Baton Rouge, LA, - Gas Util: Louisiana Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 10:36:33

8/5/2010 10:36 AM EnergyGauge® USA - FlaRes2008 / 

worst case at 315

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1286 kWh $103

Heating 342 kWh $27

Hot Water 2535 kWh $203

Lighting 1144 kWh $92

Refrigerator 424 kWh $34

Dryer 1530 kWh $122

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

230 kWh $18

48 kWh $4

30.05 Lbs.

18.92 Lbs.

6.82 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water 2535 kWh $203

Total Heating 390 kWh $31

Total Cooling 1516 kWh $121

Dishwasher 106 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 70 kWh $6

2736 kWh $219

11360 kWh $909

$909
APPENDIX C 443

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

LKR

1

HUD Green

KC - 910 - 30%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 315

No

1

910

3

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

LA , -

Baton Rouge , 

Street Address

Comment: worst case at 315

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 196 $ 108 0.55

Heating: $ 100 $ 42 0.42

Hot Water: $ 216 $ 201 0.93

Total: $ 512 $ 351 0.69

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ LA, BATON_ROUGE_RY LA_BATON_ROUGE_RY 2 29 94 75 70 1762 54 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

______ 1 Raised Floor 910 ft2 38 010

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1094 ft2 304 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 910 ft2 N N

8/5/2010 10:37 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
444 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 38 910 ft2 0.09 Metal

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 N Exterior Frame - Steel 19 234.75 ft2 5 0.2 0.5

______ 2 E Exterior Frame - Steel 19 315.75 ft2 5 0.2 0.5

______ 3 S Exterior Frame - Steel 19 234.75 ft2 5 0.2 0.5

______ 4 W Exterior Frame - Steel 19 315.75 ft2 5 0.2 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 N Insulated None 0.4 8 ft2 

______ 2 S Insulated None 0.4 8.89 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.34 0.31 N 32 ft2 4 ft 0 in 1 ft 0 in None None

______ 2 N Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 4 ft 0 in 1 ft 0 in None None

______ 3 E Vinyl Low-E Double Yes 0.34 0.31 N 48 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Vinyl Low-E Double Yes 0.34 0.31 N 10 ft2 3 ft 0 in 1 ft 0 in None None

______ 5 S Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 W Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 W Vinyl Low-E Double Yes 0.34 0.31 N 7.67 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00036 859 6.30 47.2 88.7 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 15 24 kBtu/hr 720 cfm 0.75 False

8/5/2010 10:37 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 445

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 8.5 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.98 1 gal 60.42 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 246 ft2 Interior 91 ft2 Prop. Air Leakage Attic 43.20 cfm 6.00 % 0.05 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh baton rouge fixed 0 0.08

Natural Gas Therm Louisiana Average 0 1.09

Fuel Oil Gallon Louisiana Default 0 1.1

Propane Gallon Louisiana Default 0 1.4

8/5/2010 10:37 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
446 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: KC - 910 - 50% TMY City: LA_BATON_ROUGE

Elec Util: baton rouge fixed

Baton Rouge, LA, - Gas Util: Louisiana Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 10:38:10

8/5/2010 10:38 AM EnergyGauge® USA - FlaRes2008 / 

worst case at 315

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1286 kWh $103

Heating 342 kWh $27

Hot Water 1005 kWh $80

Lighting 1144 kWh $92

Refrigerator 424 kWh $34

Dryer 1530 kWh $122

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

230 kWh $18

48 kWh $4

26 Lbs.

16.37 Lbs.

5.9 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water 1005 kWh $80

Total Heating 390 kWh $31

Total Cooling 1516 kWh $121

Dishwasher 106 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 70 kWh $6

2736 kWh $219

9830 kWh $786

$786
APPENDIX C 447

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

LKR

1

HUD Green

KC - 910 - 50%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 315

No

1

910

3

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

LA , -

Baton Rouge , 

Street Address

Comment: worst case at 315

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 196 $ 108 0.55

Heating: $ 100 $ 42 0.42

Hot Water: $ 216 $ 80 0.37

Total: $ 512 $ 230 0.45

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ LA, BATON_ROUGE_RY LA_BATON_ROUGE_RY 2 29 94 75 70 1762 54 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

______ 1 Raised Floor 910 ft2 38 010

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1094 ft2 304 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 910 ft2 N N

8/5/2010 10:39 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
448 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 38 910 ft2 0.09 Metal

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 N Exterior Frame - Steel 19 234.75 ft2 5 0.2 0.5

______ 2 E Exterior Frame - Steel 19 315.75 ft2 5 0.2 0.5

______ 3 S Exterior Frame - Steel 19 234.75 ft2 5 0.2 0.5

______ 4 W Exterior Frame - Steel 19 315.75 ft2 5 0.2 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 N Insulated None 0.4 8 ft2 

______ 2 S Insulated None 0.4 8.89 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.34 0.31 N 32 ft2 4 ft 0 in 1 ft 0 in None None

______ 2 N Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 4 ft 0 in 1 ft 0 in None None

______ 3 E Vinyl Low-E Double Yes 0.34 0.31 N 48 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Vinyl Low-E Double Yes 0.34 0.31 N 10 ft2 3 ft 0 in 1 ft 0 in None None

______ 5 S Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 W Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 W Vinyl Low-E Double Yes 0.34 0.31 N 7.67 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00036 859 6.30 47.2 88.7 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 15 24 kBtu/hr 720 cfm 0.75 False

8/5/2010 10:39 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 449

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 8.5 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.98 1 gal 60.42 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 246 ft2 Interior 91 ft2 Prop. Air Leakage Attic 43.20 cfm 6.00 % 0.05 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh baton rouge fixed 0 0.08

Natural Gas Therm Louisiana Average 0 1.09

Fuel Oil Gallon Louisiana Default 0 1.1

Propane Gallon Louisiana Default 0 1.4

8/5/2010 10:39 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
450 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: KC - 910 - 60% TMY City: LA_BATON_ROUGE

Elec Util: baton rouge fixed

Baton Rouge, LA, - Gas Util: Louisiana Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 10:40:05

8/5/2010 10:40 AM EnergyGauge® USA - FlaRes2008 / 

worst case at 315

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1286 kWh $103

Heating 342 kWh $27

Hot Water 1005 kWh $80

Lighting 1144 kWh $92

Refrigerator 424 kWh $34

Dryer 1530 kWh $122

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

230 kWh $18

48 kWh $4

24.68 Lbs.

15.53 Lbs.

5.6 Tons

PV Produced (kWh)* -501 kWh $-40

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water 1005 kWh $80

Total Heating 390 kWh $31

Total Cooling 1516 kWh $121

Dishwasher 106 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 70 kWh $6

2736 kWh $219

9830 kWh $786

$746
APPENDIX C 451

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

LKR

1

HUD Green

KC - 910 - 60%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 315

No

1

910

3

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

LA , -

Baton Rouge , 

Street Address

Comment: worst case at 315

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 196 $ 108 0.55

Heating: $ 100 $ 42 0.42

Hot Water: $ 216 $ 80 0.37

Total: $ 512 $ 230 0.45

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ LA, BATON_ROUGE_RY LA_BATON_ROUGE_RY 2 29 94 75 70 1762 54 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

______ 1 Raised Floor 910 ft2 38 010

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1094 ft2 304 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 910 ft2 N N

8/5/2010 10:41 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
452 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 38 910 ft2 0.09 Metal

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 N Exterior Frame - Steel 19 234.75 ft2 5 0.2 0.5

______ 2 E Exterior Frame - Steel 19 315.75 ft2 5 0.2 0.5

______ 3 S Exterior Frame - Steel 19 234.75 ft2 5 0.2 0.5

______ 4 W Exterior Frame - Steel 19 315.75 ft2 5 0.2 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 N Insulated None 0.4 8 ft2 

______ 2 S Insulated None 0.4 8.89 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.34 0.31 N 32 ft2 4 ft 0 in 1 ft 0 in None None

______ 2 N Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 4 ft 0 in 1 ft 0 in None None

______ 3 E Vinyl Low-E Double Yes 0.34 0.31 N 48 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Vinyl Low-E Double Yes 0.34 0.31 N 10 ft2 3 ft 0 in 1 ft 0 in None None

______ 5 S Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 W Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 W Vinyl Low-E Double Yes 0.34 0.31 N 7.67 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00036 859 6.30 47.2 88.7 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 15 24 kBtu/hr 720 cfm 0.75 False

8/5/2010 10:41 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 453

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 8.5 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.98 1 gal 60.42 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 246 ft2 Interior 91 ft2 Prop. Air Leakage Attic 43.20 cfm 6.00 % 0.05 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh baton rouge fixed 0 0.08

Natural Gas Therm Louisiana Average 0 1.09

Fuel Oil Gallon Louisiana Default 0 1.1

Propane Gallon Louisiana Default 0 1.4

8/5/2010 10:41 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
454 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: KC - 910 - 60% - B TMY City: LA_BATON_ROUGE

Elec Util: baton rouge fixed

Baton Rouge, LA, - Gas Util: Louisiana Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 10:42:03

8/5/2010 10:42 AM EnergyGauge® USA - FlaRes2008 / 

worst case at 315

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1008 kWh $81

Heating 288 kWh $23

Hot Water 1005 kWh $80

Lighting 1144 kWh $92

Refrigerator 424 kWh $34

Dryer 1530 kWh $122

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

214 kWh $17

42 kWh $3

25.07 Lbs.

15.78 Lbs.

5.69 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water 1005 kWh $80

Total Heating 330 kWh $26

Total Cooling 1222 kWh $98

Dishwasher 106 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 70 kWh $6

2736 kWh $219

9476 kWh $758

$758
APPENDIX C 455

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

LKR

1

HUD Green

KC - 910 - 60% - B

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 315

No

1

910

3

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

LA , -

Baton Rouge , 

Street Address

Comment: worst case at 315

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 196 $ 86 0.44

Heating: $ 100 $ 36 0.36

Hot Water: $ 216 $ 80 0.37

Total: $ 512 $ 202 0.39

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ LA, BATON_ROUGE_RY LA_BATON_ROUGE_RY 2 29 94 75 70 1762 54 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

______ 1 Raised Floor 910 ft2 38 010

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1094 ft2 304 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 910 ft2 N N

8/5/2010 10:43 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
456 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 38 910 ft2 0.09 Metal

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 N Exterior Frame - Steel 19 234.75 ft2 5 0.2 0.5

______ 2 E Exterior Frame - Steel 19 315.75 ft2 5 0.2 0.5

______ 3 S Exterior Frame - Steel 19 234.75 ft2 5 0.2 0.5

______ 4 W Exterior Frame - Steel 19 315.75 ft2 5 0.2 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 N Insulated None 0.4 8 ft2 

______ 2 S Insulated None 0.4 8.89 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.34 0.31 N 32 ft2 4 ft 0 in 1 ft 0 in None None

______ 2 N Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 4 ft 0 in 1 ft 0 in None None

______ 3 E Vinyl Low-E Double Yes 0.34 0.31 N 48 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Vinyl Low-E Double Yes 0.34 0.31 N 10 ft2 3 ft 0 in 1 ft 0 in None None

______ 5 S Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 W Vinyl Low-E Double Yes 0.34 0.31 N 16 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 W Vinyl Low-E Double Yes 0.34 0.31 N 7.67 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00036 859 6.30 47.2 88.7 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 18 24 kBtu/hr 720 cfm 0.75 False

8/5/2010 10:43 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 457

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 9 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.98 1 gal 60.42 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 246 ft2 Interior 91 ft2 Prop. Air Leakage Interior 43.20 cfm 6.00 % 0.05 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh baton rouge fixed 0 0.08

Natural Gas Therm Louisiana Average 0 1.09

Fuel Oil Gallon Louisiana Default 0 1.1

Propane Gallon Louisiana Default 0 1.4

8/5/2010 10:43 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
458 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX C 459

APPENDIX C

ENERGY MODELS

B. Bayou LaBatre, Alabama
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

a

a

IECCStd2006 Base Line House Bronze - 15% Silver - 30% Gold - 50% Emerald - 60%

0.90 0.85 0.72 0.51 0.41

77 80 71 65 57

2006 IECC

2006 IECC 

Compliance 

Standard Calc 

-Base

Percenta

ge Better 

than 

2006 

IECC

2006 IECC 

Compliance 

Standard 

Calc - 15%

2006 IECC 

Compliance 

Standard 

Calc - 30%

2006 IECC 

Compliance 

Standard 

Calc - 50%

2006 IECC 

Compliance 

Standard 

Calc - 60%

967 967 967 967 967 967

1 1 1 1 1 1

Crawl Space Crawl Space Crawl Space Crawl Space Crawl Space Crawl Space

2 2 2 2 2 2

2 2 2 2 2 2

23.97 30 38 38 38 49

2x wood 2x6-16"oc 2x6-16"oc 2x6-24"oc 2x6-24"oc 2x6-24"oc

9.85 19/0 19/0 19/0 19/0 19/5

11.34 11 11 30 30 38

1,035 1,035 1,035 1,035 1,035 1,035

0.75 0.35 0.35 0.35 0.35 0.350.40 0.40 0.40 0.40 0.40 0.40

90 90 90 90 90 90

9.31% 9.31% 9.31% 9.31% 9.31% 9.31%

0.00036 0.00046 0.00046 0.00046 0.00046 0.00046

6.67 8.53 8.53 8.53 8.53 8.53

none none none none none

13 13 13 16 14 18

18 24 24 24 24 24

7.7 7.7 7.7 8.5 7.7 9

18 18 18 18 18 18

not given 0 0 0

20.00% 12.00% 12.00% 6.00% 6.00% 6.00%

6.00% 6 6 8 8 1

Inside Attic Attic Attic Attic Inside

Inside Interior Interior Interior Interior Interior

50 50 50 50 50 50

0.92 0.92 0.94 0.98 0.98 w/ ICS 0.98 w/ ICS

40 40 40 1 1 Solar 1 Solar78 78 78 78 78 7868 68 68 68 68 68

No none Yes Yes Yes Yes

none none 2/6 2/6 2/6 2/6

none none 2/7 2/7 2/7 2/7

n/a 10% 10% 10% 10% 10%

PV

165 150 9.09% 129 21.82% 95 42.42% 106 35.76% 80 51.52%

80 62 22.50% 52 35.00% 39 51.25% 43 46.25% 26 67.50%

183 183 0.00% 177 3.28% 168 8.20% 61 66.67% 61 66.67%

PV

428 395 7.71% 358 16.36% 302 29.44% 210 50.93% 167 60.98%

s at each level.

base IECC number is manipulated to original, so saving increases over e-Ratio

 mode when there is no added ventilation @ 0.00036 (ashrea 62.2)
Bayou LaBatre, AlabamaPalm Harbor

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 162 126 36 22% 95 67 41% 107 55 34% 81 81 50%Heating Cost 59 52 7 12% 38 21 36% 42 17 29% 26 33 56%Hot Water Heating Cost 183 177 6 3% 168 15 8% 61 122 67% 61 122 67%HVAC & hwh Savings N/A 49 103 194 236

Appliances/MELs Savings N/A 18 34 26 26

Appliances/MELs Cost 500 482 466 474 474

HVAC & HWH sub-total 404 355 12% 301 25% 210 48% 168 58%

Grand Total 904 837 93% 767 85% 684 76% 642 71%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Silve

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost
462 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Palm Harbor - base TMY City: AL_MOBILE_REGIO

Elec Util: bayou labatre fixed

Bayou LaBatre, Al, - Gas Util: Alabama Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 10:45:48

8/5/2010 10:46 AM EnergyGauge® USA - FlaRes2008 / 

worst case @ 90

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1659 kWh $133

Heating 634 kWh $51

Hot Water 2289 kWh $183

Lighting 1179 kWh $94

Refrigerator 672 kWh $54

Dryer 827 kWh $66

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

365 kWh $29

99 kWh $8

69.72 Lbs.

23.69 Lbs.

7.34 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(13.5 kBtu/hr) 

(11.8 kBtu/hr) 

Total Hot Water 2289 kWh $183

Total Heating 733 kWh $59

Total Cooling 2024 kWh $162

Dishwasher 98 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 53 kWh $4

2512 kWh $201

11296 kWh $904

$904
APPENDIX C 463

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Palm Harbor Homes

1

HUD Green

Palm Harbor - base

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 90

No

1

967

2

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Al , -

Bayou LaBatre , 

Street Address

Comment: worst case @ 90

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2

e-Ratio

Cooling: $ 165 $ 150 0.91

Heating: $ 80 $ 62 0.77

Hot Water: $ 183 $ 183 1.00

Total: $ 428 $ 395 0.92

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ AL, MOBILE_REGIONAL AL_MOBILE_REGIONAL 2 27 91 75 70 1723.5 48 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Exposed Perimeter Wall Ins. R-Value Floor Joist R-Value

______ 1 Crawlspace 129 ft 0 967 ft2 11 0.5 0 0.5

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1019 ft2 160 ft2 Medium 0.85 No 0 18.4 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 967 ft2 N N

8/5/2010 10:47 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
464 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 30 967 ft2 0.14 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 42.67 ft2 0 0.23 0.5

______ 2 N Exterior Frame - Wood 19 120 ft2 0 0.23 0.5

______ 3 W Exterior Frame - Wood 19 234.67 ft2 0 0.23 0.5

______ 4 S Exterior Frame - Wood 19 240 ft2 0 0.23 0.5

______ 5 E Exterior Frame - Wood 19 277.33 ft2 0 0.23 0.5

______ 6 N Exterior Frame - Wood 19 120 ft2 0 0.23 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.28 20 ft2 

______ 2 W Insulated None 0.28 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.35 0.4 N 15 ft2 5 ft 4 in 1 ft 0 in None None

______ 2 W Vinyl Low-E Double Yes 0.35 0.4 N 7.5 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 S Vinyl Low-E Double Yes 0.35 0.4 N 7.5 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Vinyl Low-E Double Yes 0.35 0.4 N 30 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 N Vinyl Low-E Double Yes 0.35 0.4 N 30 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00046 1168 8.53 64.1 120.6 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 24 kBtu/hr 720 cfm 0.75 False

8/5/2010 10:47 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 465

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 7.7 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.92 40 gal 50 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Attic 6 59.6 ft2 Attic 0 ft2 DSE=0.80 Interior 34.95 cfm 0.00 % 0.00 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh bayou labatre fixed 0 0.08

Natural Gas Therm Alabama Average 0 1.3

Fuel Oil Gallon Alabama Default 0 1.1

Propane Gallon Alabama Default 0 1.4

8/5/2010 10:47 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
466 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Palm Harbor - 15% TMY City: AL_MOBILE_REGIO

Elec Util: bayou labatre fixed

Bayou LaBatre, Al, - Gas Util: Alabama Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 10:48:07

8/5/2010 10:48 AM EnergyGauge® USA - FlaRes2008 / 

worst case @ 90

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1300 kWh $104

Heating 564 kWh $45

Hot Water 2214 kWh $177

Lighting 1179 kWh $94

Refrigerator 450 kWh $36

Dryer 827 kWh $66

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

280 kWh $22

90 kWh $7

64.65 Lbs.

21.97 Lbs.

6.8 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(15.3 kBtu/hr) 

(13.7 kBtu/hr) 

Total Hot Water 2214 kWh $177

Total Heating 654 kWh $52

Total Cooling 1580 kWh $126

Dishwasher 98 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 53 kWh $4

2512 kWh $201

10476 kWh $837

$837
APPENDIX C 467

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Palm Harbor Homes

1

HUD Green

Palm Harbor - 15%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 90

No

1

967

2

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Al , -

Bayou LaBatre , 

Street Address

Comment: worst case @ 90

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2

e-Ratio

Cooling: $ 165 $ 129 0.78

Heating: $ 80 $ 52 0.65

Hot Water: $ 183 $ 177 0.97

Total: $ 428 $ 358 0.84

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ AL, MOBILE_REGIONAL AL_MOBILE_REGIONAL 2 27 91 75 70 1723.5 48 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Exposed Perimeter Wall Ins. R-Value Floor Joist R-Value

______ 1 Crawlspace 129 ft 0 967 ft2 11 0.5 0 0.5

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1019 ft2 160 ft2 Medium 0.85 No 0 18.4 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 967 ft2 N N

8/5/2010 10:49 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
468 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 30 967 ft2 0.14 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 42.67 ft2 0 0.23 0.5

______ 2 N Exterior Frame - Wood 19 120 ft2 0 0.23 0.5

______ 3 W Exterior Frame - Wood 19 234.67 ft2 0 0.23 0.5

______ 4 S Exterior Frame - Wood 19 240 ft2 0 0.23 0.5

______ 5 E Exterior Frame - Wood 19 277.33 ft2 0 0.23 0.5

______ 6 N Exterior Frame - Wood 19 120 ft2 0 0.23 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.28 20 ft2 

______ 2 W Insulated None 0.28 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.35 0.4 N 15 ft2 5 ft 4 in 1 ft 0 in IECC None

______ 2 W Vinyl Low-E Double Yes 0.35 0.4 N 7.5 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 3 S Vinyl Low-E Double Yes 0.35 0.4 N 7.5 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 4 S Vinyl Low-E Double Yes 0.35 0.4 N 30 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 5 N Vinyl Low-E Double Yes 0.35 0.4 N 30 ft2 0 ft 0 in 0 ft 0 in IECC None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00046 1168 8.53 64.1 120.6 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 24 kBtu/hr 720 cfm 0.75 False

8/5/2010 10:49 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 469

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 7.7 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.94 40 gal 50 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Attic 6 59.6 ft2 Attic 0 ft2 Prop. Air Leakage Interior 86.40 cfm 12.00 % 0.09 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh bayou labatre fixed 0 0.08

Natural Gas Therm Alabama Average 0 1.3

Fuel Oil Gallon Alabama Default 0 1.1

Propane Gallon Alabama Default 0 1.4

8/5/2010 10:49 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
470 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Palm Harbor - 30% TMY City: AL_MOBILE_REGIO

Elec Util: bayou labatre fixed

Bayou LaBatre, Al, - Gas Util: Alabama Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 10:49:56

8/5/2010 10:50 AM EnergyGauge® USA - FlaRes2008 / 

worst case @ 90

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1004 kWh $80

Heating 416 kWh $33

Hot Water 2105 kWh $168

Lighting 1179 kWh $94

Refrigerator 450 kWh $36

Dryer 627 kWh $50

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

190 kWh $15

59 kWh $5

59.27 Lbs.

20.14 Lbs.

6.24 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water 2105 kWh $168

Total Heating 475 kWh $38

Total Cooling 1194 kWh $95

Dishwasher 98 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 55 kWh $4

2512 kWh $201

9604 kWh $767

$767
APPENDIX C 471

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Palm Harbor Homes

1

HUD Green

Palm Harbor - 30%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 90

No

1

967

2

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Al , -

Bayou LaBatre , 

Street Address

Comment: worst case @ 90

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2

e-Ratio

Cooling: $ 165 $ 95 0.58

Heating: $ 80 $ 39 0.49

Hot Water: $ 183 $ 168 0.92

Total: $ 428 $ 302 0.71

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ AL, MOBILE_REGIONAL AL_MOBILE_REGIONAL 2 27 91 75 70 1723.5 48 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Exposed Perimeter Wall Ins. R-Value Floor Joist R-Value

______ 1 Crawlspace 129 ft 0 967 ft2 19 0.5 0 0.5

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1019 ft2 160 ft2 Medium 0.85 No 0 18.4 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 967 ft2 N N

8/5/2010 10:50 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
472 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 38 967 ft2 0.14 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 42.67 ft2 0 0.23 0.5

______ 2 N Exterior Frame - Wood 19 120 ft2 0 0.23 0.5

______ 3 W Exterior Frame - Wood 19 234.67 ft2 0 0.23 0.5

______ 4 S Exterior Frame - Wood 19 240 ft2 0 0.23 0.5

______ 5 E Exterior Frame - Wood 19 277.33 ft2 0 0.23 0.5

______ 6 N Exterior Frame - Wood 19 120 ft2 0 0.23 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.28 20 ft2 

______ 2 W Insulated None 0.28 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.35 0.4 N 15 ft2 5 ft 4 in 1 ft 0 in IECC None

______ 2 W Vinyl Low-E Double Yes 0.35 0.4 N 7.5 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 3 S Vinyl Low-E Double Yes 0.35 0.4 N 7.5 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 4 S Vinyl Low-E Double Yes 0.35 0.4 N 30 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 5 N Vinyl Low-E Double Yes 0.35 0.4 N 30 ft2 0 ft 0 in 0 ft 0 in IECC None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00046 1168 8.53 64.1 120.6 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 16 24 kBtu/hr 720 cfm 0.75 False

8/5/2010 10:50 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 473

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 8.5 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.98 1 gal 50 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Attic 8 59.6 ft2 Interior 0 ft2 Prop. Air Leakage Interior 43.20 cfm 6.00 % 0.04 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh bayou labatre fixed 0 0.08

Natural Gas Therm Alabama Average 0 1.3

Fuel Oil Gallon Alabama Default 0 1.1

Propane Gallon Alabama Default 0 1.4

8/5/2010 10:50 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
474 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Palm Harbor - 50% TMY City: AL_MOBILE_REGIO

Elec Util: bayou labatre fixed

Bayou LaBatre, Al, - Gas Util: Alabama Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 10:51:40

8/5/2010 10:51 AM EnergyGauge® USA - FlaRes2008 / 

worst case @ 90

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1148 kWh $92

Heating 451 kWh $36

Hot Water 758 kWh $61

Lighting 1179 kWh $94

Refrigerator 450 kWh $36

Dryer 627 kWh $50

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

190 kWh $15

73 kWh $6

52.15 Lbs.

17.72 Lbs.

5.49 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water 758 kWh $61

Total Heating 524 kWh $42

Total Cooling 1338 kWh $107

Dishwasher 98 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 55 kWh $4

2512 kWh $201

8450 kWh $676

$676
APPENDIX C 475

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Palm Harbor Homes

1

HUD Green

Palm Harbor - 50%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 90

No

1

967

2

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Al , -

Bayou LaBatre , 

Street Address

Comment: worst case @ 90

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2

e-Ratio

Cooling: $ 165 $ 106 0.64

Heating: $ 80 $ 43 0.54

Hot Water: $ 183 $ 61 0.33

Total: $ 428 $ 210 0.49

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ AL, MOBILE_REGIONAL AL_MOBILE_REGIONAL 2 27 91 75 70 1723.5 48 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Exposed Perimeter Wall Ins. R-Value Floor Joist R-Value

______ 1 Crawlspace 129 ft 0 967 ft2 19 0.5 0 0.5

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1019 ft2 160 ft2 Medium 0.85 No 0 18.4 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 967 ft2 N N

8/5/2010 10:52 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
476 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 38 967 ft2 0.14 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 42.67 ft2 0 0.23 0.5

______ 2 N Exterior Frame - Wood 19 120 ft2 0 0.23 0.5

______ 3 W Exterior Frame - Wood 19 234.67 ft2 0 0.23 0.5

______ 4 S Exterior Frame - Wood 19 240 ft2 0 0.23 0.5

______ 5 E Exterior Frame - Wood 19 277.33 ft2 0 0.23 0.5

______ 6 N Exterior Frame - Wood 19 120 ft2 0 0.23 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.28 20 ft2 

______ 2 W Insulated None 0.28 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.35 0.4 N 15 ft2 5 ft 4 in 1 ft 0 in IECC None

______ 2 W Vinyl Low-E Double Yes 0.35 0.4 N 7.5 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 3 S Vinyl Low-E Double Yes 0.35 0.4 N 7.5 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 4 S Vinyl Low-E Double Yes 0.35 0.4 N 30 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 5 N Vinyl Low-E Double Yes 0.35 0.4 N 30 ft2 0 ft 0 in 0 ft 0 in IECC None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00046 1168 8.53 64.1 120.6 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 14 24 kBtu/hr 720 cfm 0.75 False

8/5/2010 10:52 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 477

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 7.7 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.98 1 gal 50 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Attic 8 59.6 ft2 Interior 0 ft2 Prop. Air Leakage Interior 43.20 cfm 6.00 % 0.04 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh bayou labatre fixed 0 0.08

Natural Gas Therm Alabama Average 0 1.3

Fuel Oil Gallon Alabama Default 0 1.1

Propane Gallon Alabama Default 0 1.4

8/5/2010 10:52 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
478 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Palm Harbor - 60% TMY City: AL_MOBILE_REGIO

Elec Util: bayou labatre fixed

Bayou LaBatre, Al, - Gas Util: Alabama Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 10:53:17

8/5/2010 10:53 AM EnergyGauge® USA - FlaRes2008 / 

worst case @ 90

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 839 kWh $67

Heating 283 kWh $23

Hot Water 758 kWh $61

Lighting 1179 kWh $94

Refrigerator 450 kWh $36

Dryer 627 kWh $50

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

177 kWh $14

42 kWh $3

48.94 Lbs.

16.63 Lbs.

5.15 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water 758 kWh $61

Total Heating 325 kWh $26

Total Cooling 1016 kWh $81

Dishwasher 98 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 55 kWh $4

2512 kWh $201

7929 kWh $634

$634
APPENDIX C 479

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Palm Harbor Homes

1

HUD Green

Palm Harbor - 60%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 90

No

1

967

2

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Al , -

Bayou LaBatre , 

Street Address

Comment: worst case @ 90

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2

e-Ratio

Cooling: $ 165 $ 80 0.48

Heating: $ 80 $ 26 0.32

Hot Water: $ 183 $ 61 0.33

Total: $ 428 $ 167 0.39

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ AL, MOBILE_REGIONAL AL_MOBILE_REGIONAL 2 27 91 75 70 1723.5 48 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Exposed Perimeter Wall Ins. R-Value Floor Joist R-Value

______ 1 Crawlspace 129 ft 0 967 ft2 30 0.5 0 0.5

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1019 ft2 160 ft2 Medium 0.85 No 0 18.4 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 967 ft2 N N

8/5/2010 10:54 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
480 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 49 967 ft2 0.14 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 42.67 ft2 5 0.23 0.5

______ 2 N Exterior Frame - Wood 19 120 ft2 5 0.23 0.5

______ 3 W Exterior Frame - Wood 19 234.67 ft2 5 0.23 0.5

______ 4 S Exterior Frame - Wood 19 240 ft2 5 0.23 0.5

______ 5 E Exterior Frame - Wood 19 277.33 ft2 5 0.23 0.5

______ 6 N Exterior Frame - Wood 19 120 ft2 5 0.23 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.28 20 ft2 

______ 2 W Insulated None 0.28 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.35 0.4 N 15 ft2 5 ft 4 in 1 ft 0 in IECC None

______ 2 W Vinyl Low-E Double Yes 0.35 0.4 N 7.5 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 3 S Vinyl Low-E Double Yes 0.35 0.4 N 7.5 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 4 S Vinyl Low-E Double Yes 0.35 0.4 N 30 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 5 N Vinyl Low-E Double Yes 0.35 0.4 N 30 ft2 0 ft 0 in 0 ft 0 in IECC None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00046 1168 8.53 64.1 120.6 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 18 24 kBtu/hr 720 cfm 0.75 False

8/5/2010 10:54 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 481

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 9 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.98 1 gal 50 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 59.6 ft2 Interior 0 ft2 Prop. Air Leakage Interior 43.20 cfm 6.00 % 0.04 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh bayou labatre fixed 0 0.08

Natural Gas Therm Alabama Average 0 1.3

Fuel Oil Gallon Alabama Default 0 1.1

Propane Gallon Alabama Default 0 1.4

8/5/2010 10:54 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
482 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX C 483

APPENDIX C

ENERGY MODELS

2 — Climate Zone #3

A. Oakland, California
484 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Summary Data for HUD green - Oakland, California

D-Unit Townhouse

Climate Zone 3: Oakland, California

ResCheck

Software Output Subtitle IECCStd2006

e-ratio as-built 0.35

Hers as-built 62

D-Unit Townhouse

2006 IECC

2006 IECC 

Compliance 

Standard 

Calc - 15%

Finished Floor Area, sq. feet 1105 1105

Total Stories 2 2

Foundation Type slab slab

Bedrooms 2 2

Baths 1.5 1.5

Flat Ceiling R-value 23.97 38

Floor over Ambient R-value n/a n/a

Wall Construction 2x wood 2x6-16"oc

Wall R-value (cavity/cont. sheathing) 9.85 19/0

Slab/Crawl Floor/Wall R-value 0

Wall Area, Above Grade 1,905 1,905

Window U-value 0.65 0.35

Window SHGC 0.40 0.41

Window Area 169 240

Window Area, % of Floor, CFA 15.30% 21.72%

Infiltration, Specific Leakage Area, SLA 0.00036 0.00036

Infiltration, ACH50 6.16 6.16

Ventilation Rate, cfm - 47@ ashrae 62.2 0 none

Cooling System SEER 13 none

Cooling Capacity, kBtu/hr 13.75

Heating System, Boiler/Hydronic - ef 0.8 0.92

Heating Capacity, kBtu/hr 16.1 24

Duct Leakage to outside (CFM25) not given ductless

Duct Loss %, DSE 20.00% baseboard

Qn n/a boiler

Duct Insulation 6 n/a

Duct Location Inside n/a

Air Handler Location Inside outdoor mech

Hot Water Use, gallons/day 50 50 Add 32 SF

Water Heater Energy Factor 0.56 0.92 Solar DHW

Tank size 60 60

Cool Set Point 78 78

Heat Set Point 68 68

Programmable Thermostat No No

Cooling setback degrees; setback hours none none

Heating setback degrees; setback hours none none

Percentage Flourescent Fixtures or CFLs 10 10%

Solar PV

Cooling Energy - cost 12 7 41.67%

Heating Energy - cost 134 73 45.52%

Hot Water Energy - cost 161 30 81.37%

Solar PV

Subtotal Heat Cool WH 307 110 64.17%

Total Energy Cost ($)

Notes:

Bold entries indicate upgraded features at each level.

proposed w/solar DHW
Oakland, California

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 000 00 00 00

Heating Cost 72 72 0 0% 72 0 0% 72 0 0% 76 -4 -6%Hot Water Heating Cost 30 30 0 0% 30 0 0% 30 0 0% 30 0 0%HVAC & hwh Savings N/A 0 0 0 -4

Appliances/MELs Savings N/A 0 4 4 33

Appliances/MELs Cost 646 646 642 642 613

HVAC & HWH sub-total 102 102 0% 102 0% 102 0% 106 -4%

Grand Total 748 748 100% 744 99% 744 99% 719 96%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Silver

Gold

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Silve

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost
486 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Oakland - base w solar DHW TMY City: CA_OAKLAND_MET

Elec Util: oakland fixed

Oakland, CA, - Gas Util: oakland fixed

Page 1 of 1

Registration #: Run Date: 08/10/2010 14:38:21

8/10/2010 2:39 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 0 kWh $0

Heating 72 Therms $69

Hot Water 31 Therms $30

Lighting 1263 kWh $164

Refrigerator 671 kWh $87

Dryer 827 kWh $108

Range 38 kWh $5

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 103 Therms $99

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

0 kWh $0

23 kWh $3

0.64 Lbs.

2.74 Lbs.

2.35 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

( k B t u / h r ) 

(24 kBtu/hr) 

Total Hot Water $30

Total Heating $72

Total Cooling $0

Dishwasher 128 kWh $17

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 53 kWh $7

1982 kWh $258

4985 kWh $649

$748
APPENDIX C 487

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

1

HUD Green

Oakland - base w solar DHW

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1105

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

CA , -

Oakland , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1.5

e-Ratio

Cooling: $ 12 $ 7 0.58

Heating: $ 134 $ 73 0.54

Hot Water: $ 161 $ 30 0.19

Total: $ 307 $ 110 0.36

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ CA, OAKLAND_METROP CA_OAKLAND_METROP 3 39 81 75 70 2816 0 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter Perimeter R-Value Joist R-Value

______ 1 Slab-On-Grade Edge Insulatio 65 ft 0 528 ft2 0.5 0 0.5

______ 2 Raised Floor 60 ft2 19 001

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 645 ft2 144 ft2 Light 0.8 No 0 26.6 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 577 ft2 N N

8/10/2010 2:40 PM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
488 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 30 577 ft2 0.11 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 E Exterior Frame - Wood 19 147.05 ft2 0 0.23 0.5

______ 2 S Neighbor Frame - Wood 19 265.83 ft2 0 0.23 0.01

______ 3 S Exterior Frame - Wood 19 36.67 ft2 0 0.23 0.5

______ 4 W Exterior Frame - Wood 19 147.05 ft2 0 0.23 0.5

______ 5 N Exterior Frame - Wood 19 4.58 ft2 0 0.23 0.5

______ 6 N Neighbor Frame - Wood 19 116.88 ft2 0 0.23 0.1

______ 7 N Exterior Frame - Wood 19 181.04 ft2 0 0.23 0.5

______ 8 E Exterior Frame - Wood 19 100.07 ft2 0 0.23 0.5

______ 9 S Exterior Frame - Wood 19 27.5 ft2 0 0.23 0.5

______ 10 E Exterior Frame - Wood 19 71.42 ft2 0 0.23 0.5

______ 11 S Neighbor Frame - Wood 19 265.83 ft2 0 0.23 0.5

______ 12 S Exterior Frame - Wood 19 36.67 ft2 0 0.23 0.5

______ 13 W Exterior Frame - Wood 19 147.05 ft2 0 0.23 0.5

______ 14 N Exterior Frame - Wood 19 220 ft2 0 0.23 0.5

______ 15 W Exterior Frame - Wood 19 27.5 ft2 0 0.23 0.5

______ 16 N Exterior Frame - Wood 19 110 ft2 0 0.23 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 E Wood None 0.46 6.67 ft2 

______ 2 W Wood None 0.46 6.67 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 E Vinyl Low-E Double Yes 0.35 0.41 N 39 ft2 3 ft 0 in 1 ft 0 in None None

______ 2 E Vinyl Low-E Double Yes 0.35 0.41 N 13.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 W Vinyl Low-E Double Yes 0.35 0.41 N 24 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 W Vinyl Low-E Double Yes 0.35 0.41 N 13.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 N Vinyl Low-E Double Yes 0.35 0.41 N 27 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 E Vinyl Low-E Double Yes 0.35 0.41 N 33.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 S Vinyl Low-E Double Yes 0.35 0.41 N 10 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Vinyl Low-E Double Yes 0.35 0.41 N 33.33 ft2 0 ft 0 in 0 ft 0 in None None

8/10/2010 2:40 PM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 489

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 9 N Vinyl Low-E Double Yes 0.35 0.41 N 20 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 W Vinyl Low-E Double Yes 0.35 0.41 N 6.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 11 N Vinyl Low-E Double Yes 0.35 0.41 N 20 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Default 0.00050 1449 8.55 79.6 149.6 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ k B t u / h r c f m 

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Hydronic None AFUE: 0.92 24 kBtu/hr True

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.92 60 gal 50 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ f t 2 f t 2 0.00 cfm 0.00 % 0.00 0.00

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh oakland fixed 0 0.13

Natural Gas Therm oakland fixed 0 0.96

Fuel Oil Gallon California Default 0 1.1

Propane Gallon California Default 0 1.4

8/10/2010 2:40 PM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
490 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Oakland - base w solar DHW silver TMY City: CA_OAKLAND_MET

Elec Util: oakland fixed

Oakland, CA, - Gas Util: oakland fixed

Page 1 of 1

Registration #: Run Date: 08/10/2010 14:47:13

8/10/2010 2:47 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 0 kWh $0

Heating 72 Therms $69

Hot Water 31 Therms $30

Lighting 1263 kWh $164

Refrigerator 671 kWh $87

Dryer 1269 kWh $165

Range 38 kWh $5

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 103 Therms $99

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

0 kWh $0

23 kWh $3

0.69 Lbs.

2.88 Lbs.

2.49 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

( k B t u / h r ) 

(24 kBtu/hr) 

Total Hot Water $30

Total Heating $72

Total Cooling $0

Dishwasher 100 kWh $13

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 55 kWh $7

1982 kWh $258

5401 kWh $702

$801
APPENDIX C 491

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

1

HUD Green

Oakland - base w solar DHW 

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1105

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

CA , -

Oakland , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1.5

e-Ratio

Cooling: $ 12 $ 7 0.58

Heating: $ 134 $ 73 0.54

Hot Water: $ 161 $ 30 0.19

Total: $ 307 $ 110 0.36

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ CA, OAKLAND_METROP CA_OAKLAND_METROP 3 39 81 75 70 2816 0 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter Perimeter R-Value Joist R-Value

______ 1 Slab-On-Grade Edge Insulatio 65 ft 0 528 ft2 0.5 0 0.5

______ 2 Raised Floor 60 ft2 19 001

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 645 ft2 144 ft2 Light 0.8 No 0 26.6 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 577 ft2 N N

8/10/2010 2:48 PM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
492 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 30 577 ft2 0.11 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 E Exterior Frame - Wood 19 147.05 ft2 0 0.23 0.5

______ 2 S Neighbor Frame - Wood 19 265.83 ft2 0 0.23 0.01

______ 3 S Exterior Frame - Wood 19 36.67 ft2 0 0.23 0.5

______ 4 W Exterior Frame - Wood 19 147.05 ft2 0 0.23 0.5

______ 5 N Exterior Frame - Wood 19 4.58 ft2 0 0.23 0.5

______ 6 N Neighbor Frame - Wood 19 116.88 ft2 0 0.23 0.1

______ 7 N Exterior Frame - Wood 19 181.04 ft2 0 0.23 0.5

______ 8 E Exterior Frame - Wood 19 100.07 ft2 0 0.23 0.5

______ 9 S Exterior Frame - Wood 19 27.5 ft2 0 0.23 0.5

______ 10 E Exterior Frame - Wood 19 71.42 ft2 0 0.23 0.5

______ 11 S Neighbor Frame - Wood 19 265.83 ft2 0 0.23 0.5

______ 12 S Exterior Frame - Wood 19 36.67 ft2 0 0.23 0.5

______ 13 W Exterior Frame - Wood 19 147.05 ft2 0 0.23 0.5

______ 14 N Exterior Frame - Wood 19 220 ft2 0 0.23 0.5

______ 15 W Exterior Frame - Wood 19 27.5 ft2 0 0.23 0.5

______ 16 N Exterior Frame - Wood 19 110 ft2 0 0.23 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 E Wood None 0.46 6.67 ft2 

______ 2 W Wood None 0.46 6.67 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 E Vinyl Low-E Double Yes 0.35 0.41 N 39 ft2 3 ft 0 in 1 ft 0 in None None

______ 2 E Vinyl Low-E Double Yes 0.35 0.41 N 13.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 W Vinyl Low-E Double Yes 0.35 0.41 N 24 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 W Vinyl Low-E Double Yes 0.35 0.41 N 13.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 N Vinyl Low-E Double Yes 0.35 0.41 N 27 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 E Vinyl Low-E Double Yes 0.35 0.41 N 33.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 S Vinyl Low-E Double Yes 0.35 0.41 N 10 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Vinyl Low-E Double Yes 0.35 0.41 N 33.33 ft2 0 ft 0 in 0 ft 0 in None None

8/10/2010 2:48 PM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 493

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 9 N Vinyl Low-E Double Yes 0.35 0.41 N 20 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 W Vinyl Low-E Double Yes 0.35 0.41 N 6.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 11 N Vinyl Low-E Double Yes 0.35 0.41 N 20 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Default 0.00050 1449 8.55 79.6 149.6 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ k B t u / h r c f m 

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Hydronic None AFUE: 0.92 24 kBtu/hr True

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.92 60 gal 50 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ f t 2 f t 2 0.00 cfm 0.00 % 0.00 0.00

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh oakland fixed 0 0.13

Natural Gas Therm oakland fixed 0 0.96

Fuel Oil Gallon California Default 0 1.1

Propane Gallon California Default 0 1.4

8/10/2010 2:48 PM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
494 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Oakland - base w solar DHW emerald TMY City: CA_OAKLAND_MET

Elec Util: oakland fixed

Oakland, CA, - Gas Util: oakland fixed

Page 1 of 1

Registration #: Run Date: 08/10/2010 14:56:14

8/10/2010 2:56 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 0 kWh $0

Heating 76 Therms $73

Hot Water 31 Therms $30

Lighting 1263 kWh $164

Refrigerator 450 kWh $58

Dryer 1269 kWh $165

Range 38 kWh $5

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 107 Therms $103

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

0 kWh $0

24 kWh $3

0.66 Lbs.

2.84 Lbs.

2.43 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

( k B t u / h r ) 

(24 kBtu/hr) 

Total Hot Water $30

Total Heating $76

Total Cooling $0

Dishwasher 100 kWh $13

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 55 kWh $7

1982 kWh $258

5181 kWh $673

$776
APPENDIX C 495

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

1

HUD Green

Oakland - base w solar DHW 

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1105

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

CA , -

Oakland , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1.5

e-Ratio

Cooling: $ 12 $ 7 0.58

Heating: $ 134 $ 73 0.54

Hot Water: $ 161 $ 30 0.19

Total: $ 307 $ 110 0.36

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ CA, OAKLAND_METROP CA_OAKLAND_METROP 3 39 81 75 70 2816 0 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter Perimeter R-Value Joist R-Value

______ 1 Slab-On-Grade Edge Insulatio 65 ft 0 528 ft2 0.5 0 0.5

______ 2 Raised Floor 60 ft2 19 001

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 645 ft2 144 ft2 Light 0.8 No 0 26.6 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 577 ft2 N N

8/10/2010 3:34 PM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
496 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 30 577 ft2 0.11 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 E Exterior Frame - Wood 19 147.05 ft2 0 0.23 0.5

______ 2 S Neighbor Frame - Wood 19 265.83 ft2 0 0.23 0.01

______ 3 S Exterior Frame - Wood 19 36.67 ft2 0 0.23 0.5

______ 4 W Exterior Frame - Wood 19 147.05 ft2 0 0.23 0.5

______ 5 N Exterior Frame - Wood 19 4.58 ft2 0 0.23 0.5

______ 6 N Neighbor Frame - Wood 19 116.88 ft2 0 0.23 0.1

______ 7 N Exterior Frame - Wood 19 181.04 ft2 0 0.23 0.5

______ 8 E Exterior Frame - Wood 19 100.07 ft2 0 0.23 0.5

______ 9 S Exterior Frame - Wood 19 27.5 ft2 0 0.23 0.5

______ 10 E Exterior Frame - Wood 19 71.42 ft2 0 0.23 0.5

______ 11 S Neighbor Frame - Wood 19 265.83 ft2 0 0.23 0.5

______ 12 S Exterior Frame - Wood 19 36.67 ft2 0 0.23 0.5

______ 13 W Exterior Frame - Wood 19 147.05 ft2 0 0.23 0.5

______ 14 N Exterior Frame - Wood 19 220 ft2 0 0.23 0.5

______ 15 W Exterior Frame - Wood 19 27.5 ft2 0 0.23 0.5

______ 16 N Exterior Frame - Wood 19 110 ft2 0 0.23 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 E Wood None 0.46 6.67 ft2 

______ 2 W Wood None 0.46 6.67 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 E Vinyl Low-E Double Yes 0.35 0.41 N 39 ft2 3 ft 0 in 1 ft 0 in None None

______ 2 E Vinyl Low-E Double Yes 0.35 0.41 N 13.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 W Vinyl Low-E Double Yes 0.35 0.41 N 24 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 W Vinyl Low-E Double Yes 0.35 0.41 N 13.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 N Vinyl Low-E Double Yes 0.35 0.41 N 27 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 E Vinyl Low-E Double Yes 0.35 0.41 N 33.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 S Vinyl Low-E Double Yes 0.35 0.41 N 10 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Vinyl Low-E Double Yes 0.35 0.41 N 33.33 ft2 0 ft 0 in 0 ft 0 in None None

8/10/2010 3:34 PM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 497

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 9 N Vinyl Low-E Double Yes 0.35 0.41 N 20 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 W Vinyl Low-E Double Yes 0.35 0.41 N 6.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 11 N Vinyl Low-E Double Yes 0.35 0.41 N 20 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Default 0.00050 1449 8.55 79.6 149.6 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ k B t u / h r c f m 

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Hydronic None AFUE: 0.92 24 kBtu/hr True

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.92 60 gal 50 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ f t 2 f t 2 0.00 cfm 0.00 % 0.00 0.00

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh oakland fixed 0 0.13

Natural Gas Therm oakland fixed 0 0.96

Fuel Oil Gallon California Default 0 1.1

Propane Gallon California Default 0 1.4

8/10/2010 3:34 PM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
498 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX C 499

APPENDIX C

ENERGY MODELS

3 — Climate Zone #4

A. Richmond, Virginia
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

irginia

5.2 UA

CCStd2006 Proposed Silver - 30% Gold - 50% Emerald - 60%

0.85 0.70 0.46 0.40

76 65 56 51

006 IECC

2006 IECC 

Compliance 

Standard 

Calc -Base

Percenta

ge Better 

than 

2006 

IECC

2006 IECC 

Compliance 

Standard 

Calc - 30%

2006 IECC 

Compliance 

Standard 

Calc - 50%

2006 IECC 

Compliance 

Standard 

Calc - 60%

1656 1656 1656 1656 1656

2 2 2 2 2

ond. Crawl cond. Crawl cond. Crawl cond. Crawl cond. Crawl

3 3 3 3 3

2.5 2.5 2.5 2.5 2.5

28.73 38 49 49 60

n/a n/a n/a n/a n/a

2x wood 2x6-24"oc 2x6-24"oc 2x6-24"oc 2x6-24"oc

9.85 19/0 19/5 19/5 19/10

10 10 10 10

2,312 2,312 2312 2,312 2,312

0.4 0.35 0.30 0.30 0.25 lowE triple pane

0.40 0.40 0.4 0.40 0.40

252 252 251.54 251.54 251.54

15.19% 15.19% 15.19% 15.19% 15.19%

0.00036 0.00036 0.0002 0.0002 0.00015

6.67 6.67 3.7 3.7 2.78

0 none yes yes yes

13 13 16 16 18

25.63 24 24 24 24

7.7 8.0 9.0 9.0 9.5

28.1 30 30 30 30

not given 0 0

20.00% 5.00% 5% 5% 5%

n/a 0.027 0.027 0.027 0.027

6 n/a 1 1 1

Inside cond. Crawl - interior cond. Crawl - interior cond. Crawl - interior cond. Crawl - interiorInside cond. Crawl - interior cond. Crawl - interior cond. Crawl - interior cond. Crawl - interior

70 70 70 70 w/ 64 sf 70 w/64 sf

0.92 0.92 0.98 0.98 closed loop 0.98 closed loop

40 50 1 1 Solar 1 Solar

78 78 78 78 7868 68 68 68 68

No Yes Yes Yes Yes

none none none none none

none none none none none

10 50% 50% 50% 50%

198 133 32.83% 107 45.96% 107 45.96% 95 52.02%

282 233 17.38% 172 39.01% 172 39.01% 135 52.13%

252 253 -0.40% 237 5.95% 67 73.41% 67 73.41%

732 619 15.44% 516 29.51% 346 52.73% 297 59.43%

ach level.

IECC number is manipulated to original, so saving increases over e-Ratio

e when there is no added ventilation @ 0.00036 (ashrea 62.2)
Richmond, Virginia

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 149 149 0 0% 121 28 19% 121 28 19% 108 41 28%Heating Cost 221 221 0 0% 165 56 25% 165 56 25% 129 92 42%Hot Water Heating Cost 187 187 0 0% 172 15 8% 39 148 79% 39 148 79%HVAC & hwh Savings N/A 0 99 232 281

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 585 585 585 585 585

HVAC & HWH sub-total 557 557 0% 458 18% 325 42% 276 50%

Grand Total 1142 1142 100% 1043 91% 910 80% 861 75%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Silver

Gold

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost
502 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Richmond - Base TMY City: VA_RICHMOND_INT

Elec Util: richmond fixed

Richmond, VA, 23224- Gas Util: Virginia Average

Page 1 of 1

Registration #: Run Date: 08/12/2010 11:01:13

8/12/2010 11:01 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1531 kWh $122

Heating 2381 kWh $190

Hot Water 2343 kWh $187

Lighting 1605 kWh $128

Refrigerator 669 kWh $54

Dryer 835 kWh $67

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

334 kWh $27

385 kWh $31

82.97 Lbs.

28.41 Lbs.

8.65 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(30 kBtu/hr) 

Total Hot Water 2343 kWh $187

Total Heating 2766 kWh $221

Total Cooling 1865 kWh $149

Dishwasher 126 kWh $10

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 105 kWh $8

3061 kWh $245

14284 kWh $1142

$1142
APPENDIX C 503

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

RRHA

1

HUD Green

Richmond - Base

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1656

3

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

VA , 23224-

Richmond , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2.5

e-Ratio

Cooling: $ 198 $ 133 0.67

Heating: $ 282 $ 233 0.83

Hot Water: $ 252 $ 253 1.00

Total: $ 732 $ 619 0.85

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ VA, RICHMOND_INTERN VA_RICHMOND_INTERN 4 17 93 75 70 3882.5 41 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Exposed Perimeter Wall Ins. R-Value Floor Joist R-Value

______ 1 Crawlspace 136 ft 10 834 ft2 0 0.1 0.5 0.4

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Flat Composition shingles 837 ft2 36 ft2 Medium 0.85 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 No attic Unvented 0 834 ft2 N N

8/12/2010 12:47 PM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
504 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Unvented) 38 834 ft2 0.07 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 NW Exterior Frame - Wood 19 162 ft2 0 0.16 0.5

______ 2 NE Exterior Frame - Wood 19 342 ft2 0 0.16 0.5

______ 3 SE Exterior Frame - Wood 19 54 ft2 0 0.16 0.5

______ 4 NE Exterior Frame - Wood 19 108 ft2 0 0.16 0.5

______ 5 SE Exterior Frame - Wood 19 108 ft2 0 0.16 0.5

______ 6 SW Exterior Frame - Wood 19 450 ft2 0 0.16 0.5

______ 7 NW Exterior Frame - Wood 19 144 ft2 0 0.16 0.5

______ 8 NE Exterior Frame - Wood 19 304 ft2 0 0.16 0.5

______ 9 SE Exterior Frame - Wood 19 48 ft2 0 0.16 0.5

______ 10 NE Exterior Frame - Wood 19 96 ft2 0 0.16 0.5

______ 11 SE Exterior Frame - Wood 19 96 ft2 0 0.16 0.5

______ 12 SW Exterior Frame - Wood 19 400 ft2 0 0.16 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 NW Insulated None 0.28 20 ft2 

______ 2 SE Insulated None 0.28 13.33 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 NW Wood Low-E Double Yes 0.35 0.4 N 28.44 ft2 5 ft 4 in 1 ft 0 in None None

______ 2 NE Wood Low-E Double Yes 0.35 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 NE Wood Low-E Double Yes 0.35 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 NE Wood Low-E Double Yes 0.35 0.4 N 14.22 ft2 6 ft 0 in 1 ft 0 in None None

______ 5 SE Wood Low-E Double Yes 0.35 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 SW Wood Low-E Double Yes 0.35 0.4 N 8.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 NW Wood Low-E Double Yes 0.35 0.4 N 42.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 NE Wood Low-E Double Yes 0.35 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 9 SE Wood Low-E Double Yes 0.35 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 NE Wood Low-E Double Yes 0.35 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

8/12/2010 12:47 PM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 505

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 11 SE Wood Low-E Double Yes 0.35 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 12 SW Wood Low-E Double Yes 0.35 0.4 N 8.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 13 SE Wood Low-E Double Yes 0.35 0.4 N 6.67 ft2 6 ft 0 in 1 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00036 1564 6.67 85.8 161.4 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 24 kBtu/hr 720 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 8 30 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.92 40 gal 43.5 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 6 334 ft2 Interior 133 ft2 Prop. Air Leakage Interior 45.00 cfm 5.00 % 0.03 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh richmond fixed 0 0.08

Natural Gas Therm Virginia Average 0 1.27

Fuel Oil Gallon Virginia Default 0 1.1

Propane Gallon Virginia Default 0 1.4

8/12/2010 12:47 PM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
506 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Richmond - 15% TMY City: VA_RICHMOND_INT

Elec Util: richmond fixed

Richmond, VA, 23224- Gas Util: Virginia Average

Page 1 of 1

Registration #: Run Date: 08/12/2010 11:04:31

8/12/2010 11:04 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1531 kWh $122

Heating 2381 kWh $190

Hot Water 2343 kWh $187

Lighting 1605 kWh $128

Refrigerator 669 kWh $54

Dryer 835 kWh $67

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

334 kWh $27

385 kWh $31

82.97 Lbs.

28.41 Lbs.

8.65 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(30 kBtu/hr) 

Total Hot Water 2343 kWh $187

Total Heating 2766 kWh $221

Total Cooling 1865 kWh $149

Dishwasher 126 kWh $10

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 105 kWh $8

3061 kWh $245

14284 kWh $1142

$1142
APPENDIX C 507

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

RRHA

1

HUD Green

Richmond - 15%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1656

3

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

VA , 23224-

Richmond , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2.5

e-Ratio

Cooling: $ 198 $ 133 0.67

Heating: $ 282 $ 233 0.83

Hot Water: $ 252 $ 253 1.00

Total: $ 732 $ 619 0.85

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ VA, RICHMOND_INTERN VA_RICHMOND_INTERN 4 17 93 75 70 3882.5 41 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Exposed Perimeter Wall Ins. R-Value Floor Joist R-Value

______ 1 Crawlspace 136 ft 10 834 ft2 0 0.1 0.5 0.4

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Flat Composition shingles 837 ft2 36 ft2 Medium 0.85 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 No attic Unvented 0 834 ft2 N N

8/12/2010 11:04 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
508 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Unvented) 38 834 ft2 0.07 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 NW Exterior Frame - Wood 19 162 ft2 0 0.16 0.5

______ 2 NE Exterior Frame - Wood 19 342 ft2 0 0.16 0.5

______ 3 SE Exterior Frame - Wood 19 54 ft2 0 0.16 0.5

______ 4 NE Exterior Frame - Wood 19 108 ft2 0 0.16 0.5

______ 5 SE Exterior Frame - Wood 19 108 ft2 0 0.16 0.5

______ 6 SW Exterior Frame - Wood 19 450 ft2 0 0.16 0.5

______ 7 NW Exterior Frame - Wood 19 144 ft2 0 0.16 0.5

______ 8 NE Exterior Frame - Wood 19 304 ft2 0 0.16 0.5

______ 9 SE Exterior Frame - Wood 19 48 ft2 0 0.16 0.5

______ 10 NE Exterior Frame - Wood 19 96 ft2 0 0.16 0.5

______ 11 SE Exterior Frame - Wood 19 96 ft2 0 0.16 0.5

______ 12 SW Exterior Frame - Wood 19 400 ft2 0 0.16 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 NW Insulated None 0.28 20 ft2 

______ 2 SE Insulated None 0.28 13.33 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 NW Wood Low-E Double Yes 0.35 0.4 N 28.44 ft2 5 ft 4 in 1 ft 0 in None None

______ 2 NE Wood Low-E Double Yes 0.35 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 NE Wood Low-E Double Yes 0.35 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 NE Wood Low-E Double Yes 0.35 0.4 N 14.22 ft2 6 ft 0 in 1 ft 0 in None None

______ 5 SE Wood Low-E Double Yes 0.35 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 SW Wood Low-E Double Yes 0.35 0.4 N 8.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 NW Wood Low-E Double Yes 0.35 0.4 N 42.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 NE Wood Low-E Double Yes 0.35 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 9 SE Wood Low-E Double Yes 0.35 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 NE Wood Low-E Double Yes 0.35 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

8/12/2010 11:04 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 509

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 11 SE Wood Low-E Double Yes 0.35 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 12 SW Wood Low-E Double Yes 0.35 0.4 N 8.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 13 SE Wood Low-E Double Yes 0.35 0.4 N 6.67 ft2 6 ft 0 in 1 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00036 1564 6.67 85.8 161.4 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 24 kBtu/hr 720 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 8 30 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.92 40 gal 43.5 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 6 334 ft2 Interior 133 ft2 Prop. Air Leakage Interior 45.00 cfm 5.00 % 0.03 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh richmond fixed 0 0.08

Natural Gas Therm Virginia Average 0 1.27

Fuel Oil Gallon Virginia Default 0 1.1

Propane Gallon Virginia Default 0 1.4

8/12/2010 11:04 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
510 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Richmond - 30% TMY City: VA_RICHMOND_INT

Elec Util: richmond fixed

Richmond, VA, 23224- Gas Util: Virginia Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:01:33

8/5/2010 11:01 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1207 kWh $97

Heating 1715 kWh $137

Hot Water 2150 kWh $172

Lighting 1605 kWh $128

Refrigerator 669 kWh $54

Dryer 835 kWh $67

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

241 kWh $19

267 kWh $21

75.74 Lbs.

25.94 Lbs.

7.9 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(30 kBtu/hr) 

Total Hot Water 2150 kWh $172

Total Heating 2070 kWh $165

Total Cooling 1510 kWh $121

Dishwasher 126 kWh $10

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

62 kWh $ 5

88 kWh $ 7

Clothes Washer 105 kWh $8

3061 kWh $245

13040 kWh $1043

$1043
APPENDIX C 511

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

RRHA

1

HUD Green

Richmond - 30%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1656

3

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

VA , 23224-

Richmond , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2.5

e-Ratio

Cooling: $ 205 $ 107 0.52

Heating: $ 290 $ 172 0.59

Hot Water: $ 252 $ 237 0.94

Total: $ 747 $ 516 0.69

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ VA, RICHMOND_INTERN VA_RICHMOND_INTERN 4 17 93 75 70 3882.5 41 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Exposed Perimeter Wall Ins. R-Value Floor Joist R-Value

______ 1 Crawlspace 136 ft 10 834 ft2 0 0.1 0.5 0.4

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Flat Composition shingles 837 ft2 36 ft2 Medium 0.85 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 No attic Unvented 0 834 ft2 N N

8/5/2010 11:02 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
512 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Unvented) 49 834 ft2 0.07 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 NW Exterior Frame - Wood 19 162 ft2 5 0.16 0.5

______ 2 NE Exterior Frame - Wood 19 342 ft2 5 0.16 0.5

______ 3 SE Exterior Frame - Wood 19 54 ft2 5 0.16 0.5

______ 4 NE Exterior Frame - Wood 19 108 ft2 5 0.16 0.5

______ 5 SE Exterior Frame - Wood 19 108 ft2 5 0.16 0.5

______ 6 SW Exterior Frame - Wood 19 450 ft2 5 0.16 0.5

______ 7 NW Exterior Frame - Wood 19 144 ft2 5 0.16 0.5

______ 8 NE Exterior Frame - Wood 19 304 ft2 5 0.16 0.5

______ 9 SE Exterior Frame - Wood 19 48 ft2 5 0.16 0.5

______ 10 NE Exterior Frame - Wood 19 96 ft2 5 0.16 0.5

______ 11 SE Exterior Frame - Wood 19 96 ft2 5 0.16 0.5

______ 12 SW Exterior Frame - Wood 19 400 ft2 5 0.16 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 NW Insulated None 0.28 20 ft2 

______ 2 SE Insulated None 0.28 13.33 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 NW Wood Low-E Double Yes 0.3 0.4 N 28.44 ft2 5 ft 4 in 1 ft 0 in None None

______ 2 NE Wood Low-E Double Yes 0.3 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 NE Wood Low-E Double Yes 0.3 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 NE Wood Low-E Double Yes 0.3 0.4 N 14.22 ft2 6 ft 0 in 1 ft 0 in None None

______ 5 SE Wood Low-E Double Yes 0.3 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 SW Wood Low-E Double Yes 0.3 0.4 N 8.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 NW Wood Low-E Double Yes 0.3 0.4 N 42.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 NE Wood Low-E Double Yes 0.3 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 9 SE Wood Low-E Double Yes 0.3 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 NE Wood Low-E Double Yes 0.3 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:02 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 513

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 11 SE Wood Low-E Double Yes 0.3 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 12 SW Wood Low-E Double Yes 0.3 0.4 N 8.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 13 SE Wood Low-E Double Yes 0.3 0.4 N 6.67 ft2 6 ft 0 in 1 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00020 869 3.70 47.7 89.7 0 cfm 47 cfm 100 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 16 24 kBtu/hr 720 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 9 30 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.98 1 gal 43.5 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 6 334 ft2 Interior 133 ft2 Prop. Air Leakage Interior 45.00 cfm 5.00 % 0.03 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh richmond fixed 0 0.08

Natural Gas Therm Virginia Average 0 1.27

Fuel Oil Gallon Virginia Default 0 1.1

Propane Gallon Virginia Default 0 1.4

8/5/2010 11:02 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
514 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Richmond - 50% TMY City: VA_RICHMOND_INT

Elec Util: richmond fixed

Richmond, VA, 23224- Gas Util: Virginia Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:03:15

8/5/2010 11:03 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1207 kWh $97

Heating 1715 kWh $137

Hot Water 486 kWh $39

Lighting 1605 kWh $128

Refrigerator 669 kWh $54

Dryer 835 kWh $67

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

241 kWh $19

267 kWh $21

66.07 Lbs.

22.63 Lbs.

6.89 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(30 kBtu/hr) 

Total Hot Water 486 kWh $39

Total Heating 2070 kWh $165

Total Cooling 1510 kWh $121

Dishwasher 126 kWh $10

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

62 kWh $ 5

88 kWh $ 7

Clothes Washer 105 kWh $8

3061 kWh $245

11376 kWh $910

$910
APPENDIX C 515

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

RRHA

1

HUD Green

Richmond - 50%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1656

3

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

VA , 23224-

Richmond , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2.5

e-Ratio

Cooling: $ 205 $ 107 0.52

Heating: $ 290 $ 172 0.59

Hot Water: $ 252 $ 67 0.27

Total: $ 747 $ 346 0.46

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ VA, RICHMOND_INTERN VA_RICHMOND_INTERN 4 17 93 75 70 3882.5 41 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Exposed Perimeter Wall Ins. R-Value Floor Joist R-Value

______ 1 Crawlspace 136 ft 10 834 ft2 0 0.1 0.5 0.4

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Flat Composition shingles 837 ft2 36 ft2 Medium 0.85 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 No attic Unvented 0 834 ft2 N N

8/5/2010 11:04 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
516 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Unvented) 49 834 ft2 0.07 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 NW Exterior Frame - Wood 19 162 ft2 5 0.16 0.5

______ 2 NE Exterior Frame - Wood 19 342 ft2 5 0.16 0.5

______ 3 SE Exterior Frame - Wood 19 54 ft2 5 0.16 0.5

______ 4 NE Exterior Frame - Wood 19 108 ft2 5 0.16 0.5

______ 5 SE Exterior Frame - Wood 19 108 ft2 5 0.16 0.5

______ 6 SW Exterior Frame - Wood 19 450 ft2 5 0.16 0.5

______ 7 NW Exterior Frame - Wood 19 144 ft2 5 0.16 0.5

______ 8 NE Exterior Frame - Wood 19 304 ft2 5 0.16 0.5

______ 9 SE Exterior Frame - Wood 19 48 ft2 5 0.16 0.5

______ 10 NE Exterior Frame - Wood 19 96 ft2 5 0.16 0.5

______ 11 SE Exterior Frame - Wood 19 96 ft2 5 0.16 0.5

______ 12 SW Exterior Frame - Wood 19 400 ft2 5 0.16 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 NW Insulated None 0.28 20 ft2 

______ 2 SE Insulated None 0.28 13.33 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 NW Wood Low-E Double Yes 0.3 0.4 N 28.44 ft2 5 ft 4 in 1 ft 0 in None None

______ 2 NE Wood Low-E Double Yes 0.3 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 NE Wood Low-E Double Yes 0.3 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 NE Wood Low-E Double Yes 0.3 0.4 N 14.22 ft2 6 ft 0 in 1 ft 0 in None None

______ 5 SE Wood Low-E Double Yes 0.3 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 SW Wood Low-E Double Yes 0.3 0.4 N 8.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 NW Wood Low-E Double Yes 0.3 0.4 N 42.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 NE Wood Low-E Double Yes 0.3 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 9 SE Wood Low-E Double Yes 0.3 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 NE Wood Low-E Double Yes 0.3 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:04 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 517

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 11 SE Wood Low-E Double Yes 0.3 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 12 SW Wood Low-E Double Yes 0.3 0.4 N 8.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 13 SE Wood Low-E Double Yes 0.3 0.4 N 6.67 ft2 6 ft 0 in 1 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00020 869 3.70 47.7 89.7 0 cfm 47 cfm 100 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 16 24 kBtu/hr 720 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 9 30 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.98 1 gal 43.5 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 6 334 ft2 Interior 133 ft2 Prop. Air Leakage Interior 45.00 cfm 5.00 % 0.03 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh richmond fixed 0 0.08

Natural Gas Therm Virginia Average 0 1.27

Fuel Oil Gallon Virginia Default 0 1.1

Propane Gallon Virginia Default 0 1.4

8/5/2010 11:04 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
518 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Richmond - 60% TMY City: VA_RICHMOND_INT

Elec Util: richmond fixed

Richmond, VA, 23224- Gas Util: Virginia Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:05:08

8/5/2010 11:05 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1051 kWh $84

Heating 1311 kWh $105

Hot Water 485 kWh $39

Lighting 1605 kWh $128

Refrigerator 669 kWh $54

Dryer 835 kWh $67

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

235 kWh $19

215 kWh $17

62.47 Lbs.

21.39 Lbs.

6.51 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(24 kBtu/hr) 

(30 kBtu/hr) 

Total Hot Water 485 kWh $39

Total Heating 1611 kWh $129

Total Cooling 1349 kWh $108

Dishwasher 126 kWh $10

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

63 kWh $ 5

85 kWh $ 7

Clothes Washer 105 kWh $8

3061 kWh $245

10755 kWh $861

$861
APPENDIX C 519

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

RRHA

1

HUD Green

Richmond - 60%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1656

3

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

VA , 23224-

Richmond , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2.5

e-Ratio

Cooling: $ 205 $ 95 0.46

Heating: $ 290 $ 135 0.47

Hot Water: $ 252 $ 67 0.27

Total: $ 747 $ 297 0.40

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ VA, RICHMOND_INTERN VA_RICHMOND_INTERN 4 17 93 75 70 3882.5 41 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Exposed Perimeter Wall Ins. R-Value Floor Joist R-Value

______ 1 Crawlspace 136 ft 10 834 ft2 0 0.1 0.5 0.4

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Flat Composition shingles 837 ft2 36 ft2 Medium 0.85 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 No attic Unvented 0 834 ft2 N N

8/5/2010 11:06 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
520 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Unvented) 60 834 ft2 0.07 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 NW Exterior Frame - Wood 19 162 ft2 10 0.16 0.5

______ 2 NE Exterior Frame - Wood 19 342 ft2 10 0.16 0.5

______ 3 SE Exterior Frame - Wood 19 54 ft2 10 0.16 0.5

______ 4 NE Exterior Frame - Wood 19 108 ft2 10 0.16 0.5

______ 5 SE Exterior Frame - Wood 19 108 ft2 10 0.16 0.5

______ 6 SW Exterior Frame - Wood 19 450 ft2 10 0.16 0.5

______ 7 NW Exterior Frame - Wood 19 144 ft2 10 0.16 0.5

______ 8 NE Exterior Frame - Wood 19 304 ft2 10 0.16 0.5

______ 9 SE Exterior Frame - Wood 19 48 ft2 10 0.16 0.5

______ 10 NE Exterior Frame - Wood 19 96 ft2 10 0.16 0.5

______ 11 SE Exterior Frame - Wood 19 96 ft2 10 0.16 0.5

______ 12 SW Exterior Frame - Wood 19 400 ft2 10 0.16 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 NW Insulated None 0.28 20 ft2 

______ 2 SE Insulated None 0.28 13.33 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 NW Wood Low-E Triple Yes 0.25 0.4 N 28.44 ft2 5 ft 4 in 1 ft 0 in None None

______ 2 NE Wood Low-E Triple Yes 0.25 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 NE Wood Low-E Triple Yes 0.25 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 NE Wood Low-E Triple Yes 0.25 0.4 N 14.22 ft2 6 ft 0 in 1 ft 0 in None None

______ 5 SE Wood Low-E Triple Yes 0.25 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 SW Wood Low-E Triple Yes 0.25 0.4 N 8.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 NW Wood Low-E Triple Yes 0.25 0.4 N 42.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 NE Wood Low-E Triple Yes 0.25 0.4 N 28.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 9 SE Wood Low-E Triple Yes 0.25 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 NE Wood Low-E Triple Yes 0.25 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:06 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 521

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 11 SE Wood Low-E Triple Yes 0.25 0.4 N 14.22 ft2 0 ft 0 in 0 ft 0 in None None

______ 12 SW Wood Low-E Triple Yes 0.25 0.4 N 8.67 ft2 0 ft 0 in 0 ft 0 in None None

______ 13 SE Wood Low-E Triple Yes 0.25 0.4 N 6.67 ft2 6 ft 0 in 1 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00015 652 2.78 35.8 67.3 0 cfm 47 cfm 100 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 18 24 kBtu/hr 720 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 9.5 30 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.98 1 gal 43.5 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 6 334 ft2 Interior 133 ft2 Prop. Air Leakage Interior 45.00 cfm 5.00 % 0.03 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh richmond fixed 0 0.08

Natural Gas Therm Virginia Average 0 1.27

Fuel Oil Gallon Virginia Default 0 1.1

Propane Gallon Virginia Default 0 1.4

8/5/2010 11:06 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
522 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX C 523

APPENDIX C

ENERGY MODELS

B. Seattle, Washington
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

on

IECCStd2006 Base Line House Bronze - 15% Silver - 30% Gold - 50% Emerald - 60%

0.89 0.84 0.70 0.48 0.39

79 77 69 63 59

2006 IECC

2006 IECC 

Compliance 

Standard 

Calc -Base

Percenta

ge Better 

than 

2006 

IECC

2006 IECC 

Compliance 

Standard 

Calc - 15%

2006 IECC 

Compliance 

Standard 

Calc - 30%

2006 IECC 

Compliance 

Standard 

Calc - 50%

2006 IECC 

Compliance 

Standard 

Calc - 60%

946 946 946 946 946 946

1 1 1 1 1 1

slab on gr slab on gr slab on gr slab on gr slab on gr slab on gr

2 2 2 2 2 2

1 1 1 1 1 1

none none

2x6 wood 2x6-16"oc 2x6-16"oc 2x6-24"oc 2x6-24"oc 2x6-24"oc

9.85 21/0 21/0 21/5 21/5 21/10

10 5 10 10 10 10

1,035 1,035 1,035 1,035 1,035 1,035

0.40 0.40 0.40 0.30 0.30 0.18

0.40 0.33 0.30 0.30 0.30 0.22

0.40 0.40 0.50 0.50 0.50 0.60

131 131 131.25 131.25 131.25 131.25

13.87% 13.87% 13.87% 13.87% 13.87% 13.87%

0.00036 0.00036 0.00036 0.0002 0.00014 0.0001

7.08 7.08 7.08 3.93 2.75 1.97

Central Air Yes Yes Yes Yes Yes

13 none Hydronic

8.5 none Boiler0.8 0.91 conjuction 0.91 0.94 0.94 0.95

11.4 18 with 18 12 12 12

not given none Dhwh

20.00% none

6 none

Inside noneInside Interior Interior Interior Interior Interior

50 50 50 50 50 50

0.59 0.91 0.91 0.94 0.94 w/ 64 sf 0.95 w/ 64 sf

4 4 4 4 4 closed 4 closed

78 78 78 78 78 loop 78 loop

68 68 68 68 68 solar 68 solar

No Yes Yes Yes Yes Yes

none none 2/6 2/6 2/6 2/6

none none 2/7 2/7 2/7 2/7

10 10% 10% 10% 10% 10%

4 2 50.00% 2 50.00% 2 50.00% 2 50.00% 2 50.00%

178 187 -5.06% 170 4.49% 126 29.21% 121 32.02% 89 50.00%

138 97 29.71% 97 29.71% 94 31.88% 36 73.91% 35 74.64%

320 286 10.63% 269 15.94% 222 30.63% 159 50.31% 126 60.63%

at each level.
Seattle, Washington

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 000 00 00 00

Heating Cost 148 132 16 11% 99 49 33% 101 47 32% 74 74 50%Hot Water Heating Cost 97 97 0 0% 94 3 3% 36 61 63% 35 62 64%HVAC & hwh Savings N/A 16 52 108 136

Appliances/MELs Savings N/A 0 13 35 35

Appliances/MELs Cost 370 370 357 335 335

HVAC & HWH sub-total 245 229 7% 193 21% 137 44% 109 56%

Grand Total 615 599 97% 550 89% 472 77% 444 72%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Silv

Gold

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost
526 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: HUD - Seattle - base TMY City: WA_SEATTLE_BOEI

Elec Util: seattle fixed

Seattle, WA, Gas Util: seattle fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:07:37

8/5/2010 11:08 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 0 kWh $0

Heating 137 Therms $132

Hot Water 101 Therms $97

Lighting 1466 kWh $88

Refrigerator 671 kWh $40

Dryer 827 kWh $50

Range 32 Therms $31

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 271 Therms $260

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

0 kWh $0

46 kWh $3

0.97 Lbs.

5.37 Lbs.

2.65 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

( k B t u / h r ) 

(11.4 kBtu/hr) 

Total Hot Water $97

Total Heating $148

Total Cooling 8 kWh $0

Dishwasher 133 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

8 kWh $ 0

223 kWh $ 13

Clothes Washer 53 kWh $3

2506 kWh $150

5933 kWh $355

$615
APPENDIX C 527

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

HUD

1

HUD - Seattle - base

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 45

No

1

946

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

WA , 

Seattle , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 4 $ 2 0.50

Heating: $ 178 $ 187 1.05

Hot Water: $ 138 $ 97 0.70

Total: $ 320 $ 286 0.89

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ WA, SEATTLE_BOEING WA_SEATTLE_BOEING 4 28 81 75 70 4371.5 0 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter R-Value

______ 1 Slab-On-Grade Edge Insulatio 136 ft 5 946 ft2 0 0.2 0.8

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Hip Composition shingles 1137 ft2 0 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 946 ft2 N N

8/5/2010 11:09 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
528 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 N Exterior Frame - Wood 21 128 ft2 0 0.19 0.5

______ 2 W Exterior Frame - Wood 21 48 ft2 0 0.19 0.5

______ 3 N Exterior Frame - Wood 21 96 ft2 0 0.19 0.5

______ 4 E Exterior Frame - Wood 21 48 ft2 0 0.19 0.5

______ 5 E Neighbor Frame - Wood 21 60 ft2 0.19 0.01

______ 6 N Neighbor Frame - Wood 21 16 ft2 0.19 0.01

______ 7 E Neighbor Frame - Wood 21 56 ft2 0.19 0.01

______ 8 S Exterior Frame - Wood 21 16 ft2 0 0.19 0.5

______ 9 E Exterior Frame - Wood 21 140 ft2 0 0.19 0.5

______ 10 S Exterior Frame - Wood 21 208 ft2 0 0.19 0.5

______ 11 W Exterior Frame - Wood 21 144 ft2 0 0.19 0.5

______ 12 S Exterior Frame - Wood 21 16 ft2 0 0.19 0.5

______ 13 W Exterior Frame - Wood 21 112 ft2 0 0.19 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 N Insulated None 0.4 20 ft2 

______ 2 W Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.33 0.4 N 25 ft2 6 ft 0 in 1 ft 0 in None None

______ 2 N Vinyl Low-E Double Yes 0.33 0.4 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 E Vinyl Low-E Double Yes 0.33 0.4 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Vinyl Low-E Double Yes 0.33 0.4 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 W Vinyl Low-E Double Yes 0.33 0.4 N 6.25 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 W Vinyl Low-E Double Yes 0.33 0.4 N 25 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00036 893 7.08 49.0 92.2 32 cfm 32 cfm 100 32

8/5/2010 11:09 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 529

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ k B t u / h r c f m 

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Hydronic None AFUE: 0.91 18 kBtu/hr True

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.91 4 gal 50 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ f t 2 f t 2 0.00 cfm 0.00 % 0.00 0.00

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh seattle fixed 0 0.06

Natural Gas Therm seattle fixed 0 0.96

Fuel Oil Gallon Washington Default 0 1.1

Propane Gallon Washington Default 0 1.4

8/5/2010 11:09 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
530 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: HUD - Seattle - bronze TMY City: WA_SEATTLE_BOEI

Elec Util: seattle fixed

Seattle, WA, Gas Util: seattle fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:10:09

8/5/2010 11:10 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 0 kWh $0

Heating 122 Therms $117

Hot Water 101 Therms $97

Lighting 1466 kWh $88

Refrigerator 671 kWh $40

Dryer 827 kWh $50

Range 32 Therms $31

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 255 Therms $245

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

0 kWh $0

41 kWh $2

0.96 Lbs.

5.22 Lbs.

2.55 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

( k B t u / h r ) 

(10.3 kBtu/hr) 

Total Hot Water $97

Total Heating $132

Total Cooling 7 kWh $0

Dishwasher 133 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

7 kWh $ 0

214 kWh $ 13

Clothes Washer 53 kWh $3

2506 kWh $150

5918 kWh $354

$599
APPENDIX C 531

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

HUD

1

HUD - Seattle - bronze

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 45

No

1

946

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

WA , 

Seattle , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 4 $ 2 0.50

Heating: $ 178 $ 170 0.96

Hot Water: $ 138 $ 97 0.70

Total: $ 320 $ 269 0.84

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ WA, SEATTLE_BOEING WA_SEATTLE_BOEING 4 28 81 75 70 4371.5 0 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter R-Value

______ 1 Slab-On-Grade Edge Insulatio 136 ft 10 946 ft2 0 0.2 0.8

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Hip Composition shingles 1137 ft2 0 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 946 ft2 N N

8/5/2010 11:11 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
532 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 N Exterior Frame - Wood 21 128 ft2 0 0.19 0.5

______ 2 W Exterior Frame - Wood 21 48 ft2 0 0.19 0.5

______ 3 N Exterior Frame - Wood 21 96 ft2 0 0.19 0.5

______ 4 E Exterior Frame - Wood 21 48 ft2 0 0.19 0.5

______ 5 E Neighbor Frame - Wood 21 60 ft2 0.19 0.01

______ 6 N Neighbor Frame - Wood 21 16 ft2 0.19 0.01

______ 7 E Neighbor Frame - Wood 21 56 ft2 0.19 0.01

______ 8 S Exterior Frame - Wood 21 16 ft2 0 0.19 0.5

______ 9 E Exterior Frame - Wood 21 140 ft2 0 0.19 0.5

______ 10 S Exterior Frame - Wood 21 208 ft2 0 0.19 0.5

______ 11 W Exterior Frame - Wood 21 144 ft2 0 0.19 0.5

______ 12 S Exterior Frame - Wood 21 16 ft2 0 0.19 0.5

______ 13 W Exterior Frame - Wood 21 112 ft2 0 0.19 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 N Insulated None 0.4 20 ft2 

______ 2 W Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 6 ft 0 in 1 ft 0 in None None

______ 2 N Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 E Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 W Vinyl Low-E Double Yes 0.3 0.5 N 6.25 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 W Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00036 893 7.08 49.0 92.2 32 cfm 32 cfm 100 32

8/5/2010 11:11 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 533

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ k B t u / h r c f m 

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Hydronic None AFUE: 0.91 18 kBtu/hr True

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.91 4 gal 50 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ f t 2 f t 2 0.00 cfm 0.00 % 0.00 0.00

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh seattle fixed 0 0.06

Natural Gas Therm seattle fixed 0 0.96

Fuel Oil Gallon Washington Default 0 1.1

Propane Gallon Washington Default 0 1.4

8/5/2010 11:11 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
534 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: HUD - Seattle - silver TMY City: WA_SEATTLE_BOEI

Elec Util: seattle fixed

Seattle, WA, Gas Util: seattle fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:12:15

8/5/2010 11:12 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 0 kWh $0

Heating 89 Therms $85

Hot Water 98 Therms $94

Lighting 1466 kWh $88

Refrigerator 450 kWh $27

Dryer 1275 kWh $76

Range 32 Therms $31

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 220 Therms $210

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

0 kWh $0

31 kWh $2

1 Lbs.

4.98 Lbs.

2.38 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

( k B t u / h r ) 

(8.5 kBtu/hr) 

Total Hot Water $94

Total Heating $99

Total Cooling 6 kWh $0

Dishwasher 133 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

6 kWh $ 0

206 kWh $ 12

Clothes Washer 58 kWh $3

2506 kWh $150

6131 kWh $366

$576
APPENDIX C 535

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

HUD

1

HUD - Seattle - silver

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 45

No

1

946

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

WA , 

Seattle , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 4 $ 2 0.50

Heating: $ 178 $ 126 0.71

Hot Water: $ 138 $ 94 0.68

Total: $ 320 $ 222 0.69

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ WA, SEATTLE_BOEING WA_SEATTLE_BOEING 4 28 81 75 70 4371.5 0 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter R-Value

______ 1 Slab-On-Grade Edge Insulatio 136 ft 10 946 ft2 0 0.2 0.8

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Hip Composition shingles 1137 ft2 0 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 946 ft2 N N

8/5/2010 11:13 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
536 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 N Exterior Frame - Wood 21 128 ft2 5 0.16 0.5

______ 2 W Exterior Frame - Wood 21 48 ft2 5 0.16 0.5

______ 3 N Exterior Frame - Wood 21 96 ft2 5 0.16 0.5

______ 4 E Exterior Frame - Wood 21 48 ft2 5 0.16 0.5

______ 5 E Neighbor Frame - Wood 21 60 ft2 0.16 0.01

______ 6 N Neighbor Frame - Wood 21 16 ft2 0.16 0.01

______ 7 E Neighbor Frame - Wood 21 56 ft2 0.16 0.01

______ 8 S Exterior Frame - Wood 21 16 ft2 5 0.16 0.5

______ 9 E Exterior Frame - Wood 21 140 ft2 5 0.16 0.5

______ 10 S Exterior Frame - Wood 21 208 ft2 5 0.16 0.5

______ 11 W Exterior Frame - Wood 21 144 ft2 5 0.16 0.5

______ 12 S Exterior Frame - Wood 21 16 ft2 5 0.16 0.5

______ 13 W Exterior Frame - Wood 21 112 ft2 5 0.16 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 N Insulated None 0.3 20 ft2 

______ 2 W Insulated None 0.3 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 6 ft 0 in 1 ft 0 in None None

______ 2 N Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 E Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 W Vinyl Low-E Double Yes 0.3 0.5 N 6.25 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 W Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00020 496 3.93 27.2 51.2 32 cfm 32 cfm 100 32

8/5/2010 11:13 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 537

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ k B t u / h r c f m 

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Hydronic None AFUE: 0.94 18 kBtu/hr True

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.94 4 gal 50 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ f t 2 f t 2 0.00 cfm 0.00 % 0.00 0.00

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh seattle fixed 0 0.06

Natural Gas Therm seattle fixed 0 0.96

Fuel Oil Gallon Washington Default 0 1.1

Propane Gallon Washington Default 0 1.4

8/5/2010 11:13 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
538 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: HUD - Seattle - gold TMY City: WA_SEATTLE_BOEI

Elec Util: seattle fixed

Seattle, WA, Gas Util: seattle fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:14:40

8/5/2010 11:14 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 0 kWh $0

Heating 90 Therms $86

Hot Water 38 Therms $36

Lighting 1096 kWh $66

Refrigerator 450 kWh $27

Dryer 1275 kWh $76

Range 32 Therms $31

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 159 Therms $153

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

0 kWh $0

31 kWh $2

0.94 Lbs.

4.08 Lbs.

1.97 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

( k B t u / h r ) 

(8 kBtu/hr) 

Total Hot Water $36

Total Heating $101

Total Cooling 7 kWh $0

Dishwasher 133 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

7 kWh $ 0

211 kWh $ 13

Clothes Washer 58 kWh $3

2506 kWh $150

5767 kWh $345

$498
APPENDIX C 539

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

HUD

1

HUD - Seattle - gold

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 45

No

1

946

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

WA , 

Seattle , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 4 $ 2 0.50

Heating: $ 178 $ 121 0.68

Hot Water: $ 138 $ 36 0.26

Total: $ 320 $ 159 0.50

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ WA, SEATTLE_BOEING WA_SEATTLE_BOEING 4 28 81 75 70 4371.5 0 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter R-Value

______ 1 Slab-On-Grade Edge Insulatio 136 ft 10 946 ft2 0 0.2 0.8

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Hip Composition shingles 1137 ft2 0 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 946 ft2 N N

8/5/2010 11:15 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
540 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 N Exterior Frame - Wood 21 128 ft2 5 0.16 0.5

______ 2 W Exterior Frame - Wood 21 48 ft2 5 0.16 0.5

______ 3 N Exterior Frame - Wood 21 96 ft2 5 0.16 0.5

______ 4 E Exterior Frame - Wood 21 48 ft2 5 0.16 0.5

______ 5 E Neighbor Frame - Wood 21 60 ft2 0.16 0.01

______ 6 N Neighbor Frame - Wood 21 16 ft2 0.16 0.01

______ 7 E Neighbor Frame - Wood 21 56 ft2 0.16 0.01

______ 8 S Exterior Frame - Wood 21 16 ft2 5 0.16 0.5

______ 9 E Exterior Frame - Wood 21 140 ft2 5 0.16 0.5

______ 10 S Exterior Frame - Wood 21 208 ft2 5 0.16 0.5

______ 11 W Exterior Frame - Wood 21 144 ft2 5 0.16 0.5

______ 12 S Exterior Frame - Wood 21 16 ft2 5 0.16 0.5

______ 13 W Exterior Frame - Wood 21 112 ft2 5 0.16 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 N Insulated None 0.3 20 ft2 

______ 2 W Insulated None 0.3 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 6 ft 0 in 1 ft 0 in None None

______ 2 N Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 E Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 W Vinyl Low-E Double Yes 0.3 0.5 N 6.25 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 W Vinyl Low-E Double Yes 0.3 0.5 N 25 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00014 347 2.75 19.1 35.9 32 cfm 32 cfm 100 32

8/5/2010 11:15 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 541

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ k B t u / h r c f m 

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Hydronic None AFUE: 0.94 18 kBtu/hr True

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.94 4 gal 50 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ f t 2 f t 2 0.00 cfm 0.00 % 0.00 0.00

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh seattle fixed 0 0.06

Natural Gas Therm seattle fixed 0 0.96

Fuel Oil Gallon Washington Default 0 1.1

Propane Gallon Washington Default 0 1.4

8/5/2010 11:15 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
542 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: HUD - Seattle - emerald TMY City: WA_SEATTLE_BOEI

Elec Util: seattle fixed

Seattle, WA, Gas Util: seattle fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:16:33

8/5/2010 11:16 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 0 kWh $0

Heating 65 Therms $61

Hot Water 37 Therms $35

Lighting 1096 kWh $66

Refrigerator 450 kWh $27

Dryer 1275 kWh $76

Range 32 Therms $31

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 133 Therms $127

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

0 kWh $0

21 kWh $1

0.94 Lbs.

3.82 Lbs.

1.81 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

( k B t u / h r ) 

(18 kBtu/hr) 

Total Hot Water $35

Total Heating $74

Total Cooling 5 kWh $0

Dishwasher 133 kWh $8

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

5 kWh $ 0

196 kWh $ 12

Clothes Washer 58 kWh $3

2506 kWh $150

5740 kWh $343

$470
APPENDIX C 543

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

HUD

1

HUD - Seattle - emerald

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 45

No

1

946

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

WA , 

Seattle , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 4 $ 2 0.50

Heating: $ 178 $ 89 0.50

Hot Water: $ 138 $ 35 0.25

Total: $ 320 $ 126 0.39

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ WA, SEATTLE_BOEING WA_SEATTLE_BOEING 4 28 81 75 70 4371.5 0 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter R-Value

______ 1 Slab-On-Grade Edge Insulatio 136 ft 10 946 ft2 0 0.2 0.8

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Hip Composition shingles 1137 ft2 0 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 946 ft2 N N

8/5/2010 11:17 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
544 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 N Exterior Frame - Wood 21 128 ft2 10 0.16 0.5

______ 2 W Exterior Frame - Wood 21 48 ft2 10 0.16 0.5

______ 3 N Exterior Frame - Wood 21 96 ft2 10 0.16 0.5

______ 4 E Exterior Frame - Wood 21 48 ft2 10 0.16 0.5

______ 5 E Neighbor Frame - Wood 21 60 ft2 0.16 0.01

______ 6 N Neighbor Frame - Wood 21 16 ft2 0.16 0.01

______ 7 E Neighbor Frame - Wood 21 56 ft2 0.16 0.01

______ 8 S Exterior Frame - Wood 21 16 ft2 10 0.16 0.5

______ 9 E Exterior Frame - Wood 21 140 ft2 10 0.16 0.5

______ 10 S Exterior Frame - Wood 21 208 ft2 10 0.16 0.5

______ 11 W Exterior Frame - Wood 21 144 ft2 10 0.16 0.5

______ 12 S Exterior Frame - Wood 21 16 ft2 10 0.16 0.5

______ 13 W Exterior Frame - Wood 21 112 ft2 10 0.16 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 N Insulated None 0.18 20 ft2 

______ 2 W Insulated None 0.18 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 N Vinyl Low-E Triple Yes 0.22 0.6 N 25 ft2 6 ft 0 in 1 ft 0 in None None

______ 2 N Vinyl Low-E Triple Yes 0.22 0.6 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 3 E Vinyl Low-E Triple Yes 0.22 0.6 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Vinyl Low-E Triple Yes 0.22 0.6 N 25 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 W Vinyl Low-E Triple Yes 0.22 0.6 N 6.25 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 W Vinyl Low-E Triple Yes 0.22 0.6 N 25 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00010 248 1.97 13.6 25.6 32 cfm 32 cfm 100 32

8/5/2010 11:17 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 545

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ k B t u / h r c f m 

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Hydronic None AFUE: 0.95 18 kBtu/hr True

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.95 4 gal 50 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ f t 2 f t 2 0.00 cfm 0.00 % 0.00 0.00

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh seattle fixed 0 0.06

Natural Gas Therm seattle fixed 0 0.96

Fuel Oil Gallon Washington Default 0 1.1

Propane Gallon Washington Default 0 1.4

8/5/2010 11:17 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
546 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX C 547

APPENDIX C

ENERGY MODELS

4 — Climate Zone #5

A. Akron, Ohio – Townhouse
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

12.8 UA

Std2006 Proposed Bronze - 15% Silver - 30% Gold - 50% Emerald - 60%

0.94 0.85 0.71 0.51 0.40

89 83 64 55 48

06 IECC

2006 IECC 

Compliance 

Standard Calc 

-Base

Percenta

ge Better 

than 

2006 

IECC

2006 IECC 

Compliance 

Standard 

Calc - 15%

2006 IECC 

Compliance 

Standard 

Calc - 30%

2006 IECC 

Compliance 

Standard 

Calc - 50%

2006 IECC 

Compliance 

Standard 

Calc - 60%

1296 1296 1296 1296 1296 1296

2 2 2 2 2 2

 on Grade Slab on Grade Slab on Grade Slab on Grade Slab on Grade Slab on Grade

2 2 2 2 2 2

1.5 1.5 1.5 1.5 1.5 1.5

28.73 38 38 49 60 60 raised heel truss

x wood 2x6-16"oc 2x6-16"oc 2x6-24"oc 2x6-24"oc 2x6-24"oc

14.33 19/0 19/0 19/0 19/5 siding 19/5 siding

10 10 10 10 10 10

,969 1,969 1,969 1,969 1,969 1,969

0.4 0.4 0.4 0.4 0.4 0.2

0.35 0.3 0.30 0.30 0.30 0.20 lowE triple pane

0.40 0.31 0.31 0.31 0.31 0.31

160 160 160.14 160.14 160.14 160.14

2.35% 12.36% 12.36% 12.36% 12.36% 12.36%

00036 0.00036 0.00036 0.0003 0.00014 0.0001

6.59 6.59 6.59 5.49 2.56 1.83

0 none none yes yes yes

13 13 13 13 13 18

15.75 18 18 18 18 18

78% 92% 92% 92% 96% 98%

27.1 30 30 30 30 30

ot given 0 0 0

0.00% 12.00% 12.00% 6.00% 6.00% 6.00%

6 5 1 1 1 1

nside Exterior Interior Interior Interior Interior

nside Interior Interior Interior Interior Interior

50 37.65 37.65 37.65 37.65 w/ 64 sf 37.65 w/64 sf

0.59 0.59 0.59 0.92 0.92 closed loop 0.98 closed loop

40 40 40 1 1 Solar 1 Solar

78 78 78 78 78 78

68 68 68 68 68 68

No No Yes Yes Yes Yes

none none 2/6 2/6 2/6 2/6

none none 2/7 2/7 2/7 2/7

10 10% 10% 10% 10% 10%

26 17 34.62% 16 38.46% 17 34.62% 16 38.46% 12 53.85%

468 434 7.26% 376 19.66% 340 27.35% 278 40.60% 224 52.14%

174 174 0.00% 175 -0.57% 108 37.93% 38 78.16% 31 82.18%668 625 6.44% 567 15.12% 465 30.39% 332 50.30% 267 60.03%

h level.

CC number is manipulated to original, so saving increases over e-Ratio

when there is no added ventilation @ 0.00036 (ashrea 62.2)

hus moving them into conditioned space

floor exterior walls (no brick, partition or garage)

ion walls, and garage walls
Akron, OhioA - Unit (townhouse)

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 22 20 2 9% 21 1 5% 20 2 9% 14 8 36%Heating Cost 485 420 65 13% 335 150 31% 273 212 44% 215 270 56%Hot Water Heating Cost 143 144 -1 -1% 82 61 43% 24 119 83% 19 124 87%HVAC & hwh Savings N/A 66 212 333 402

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 508 508 508 508 508

HVAC & HWH sub-total 650 584 10% 438 33% 317 51% 248 62%

Grand Total 1158 1092 94% 946 82% 825 71% 756 65%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Silve

Gold

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELs SavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost
550 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Ohio Type A - Base TMY City: OH_AKRON_AKRON

Elec Util: akron fixed

Akron, Oh, - Gas Util: akron fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:18:47

8/5/2010 11:19 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 231 kWh $18

Heating 447 Therms $456

Hot Water 140 Therms $143

Lighting 1379 kWh $110

Refrigerator 422 kWh $34

Dryer 696 kWh $56

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 588 Therms $599

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

47 kWh $4

360 kWh $29

105.28 Lbs.

31.55 Lbs.

9.63 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(30 kBtu/hr) 

Total Hot Water $143

Total Heating $485

Total Cooling 278 kWh $22

Dishwasher 114 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 210 kWh $17

2611 kWh $209

6979 kWh $559

$1158
APPENDIX C 551

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Nexus Energy Homes

1

HUD Green

Ohio Type A - Base

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1296

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , -

Akron , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1.5

e-Ratio

Cooling: $ 26 $ 17 0.65

Heating: $ 468 $ 434 0.93

Hot Water: $ 174 $ 174 1.00

Total: $ 668 $ 625 0.94

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, AKRON_AKRON-CA OH_AKRON_AKRON-CA 5 1 86 75 70 6258.5 29 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter R-Value

______ 1 Slab-On-Grade Edge Insulatio 121 ft 10 751 ft2 0 0.7 0.3

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Hip Composition shingles 903 ft2 0 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 751 ft2 N N

8/5/2010 11:19 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
552 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 38 751 ft2 0.11 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Face Brick - Wood 19 162 ft2 0 0.23 0.5

______ 2 S Exterior Face Brick - Wood 19 363 ft2 0 0.23 0.5

______ 3 E Exterior Face Brick - Wood 19 48 ft2 0 0.23 0.5

______ 4 S Exterior Face Brick - Wood 19 18 ft2 0 0.23 0.5

______ 5 E Garage Frame - Wood 19 117.17 ft2 0 0.23 0.1

______ 6 N Neighbor Frame - Wood 19 381 ft2 0 0.23 0.01

______ 7 W Exterior Frame - Wood 19 90 ft2 0 0.23 0.5

______ 8 S Exterior Frame - Wood 19 48 ft2 0 0.23 0.5

______ 9 W Exterior Frame - Wood 19 54 ft2 0 0.23 0.5

______ 10 S Exterior Frame - Wood 19 248 ft2 0 0.23 0.5

______ 11 E Exterior Frame - Wood 19 144 ft2 0 0.23 0.5

______ 12 N Neighbor Frame - Wood 19 296 ft2 0 0.23 0.01

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.4 20 ft2 

______ 2 S Insulated None 0.4 20 ft2 

______ 3 E Insulated None 0.4 20 ft2 

______ 4 E Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Wood Low-E Double Yes 0.3 0.31 N 34.5 ft2 7 ft 4 in 1 ft 0 in None None

______ 2 W Wood Low-E Double Yes 0.3 0.31 N 4 ft2 7 ft 3 in 1 ft 0 in None None

______ 3 W Wood Low-E Double Yes 0.3 0.31 N 6.67 ft2 7 ft 4 in 1 ft 0 in None None

______ 4 S Wood Low-E Double Yes 0.3 0.31 N 3 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 S Wood Low-E Double Yes 0.3 0.31 N 51.75 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 E Wood Low-E Double Yes 0.3 0.31 N 3 ft2 5 ft 4 in 1 ft 0 in None None

______ 7 W Wood Low-E Double Yes 0.3 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Wood Low-E Double Yes 0.3 0.31 N 5.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 9 S Wood Low-E Double Yes 0.3 0.31 N 21.78 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:19 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 553

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 10 E Wood Low-E Double Yes 0.3 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Default 0.00050 1700 9.15 93.3 175.5 0 cfm 0 cfm 0 20

# Floor Area Ceiling Area Exposed Wall Perimeter Avg. Wall Height Exposed Wall Insulation

GARAGE

______ 1 274.5589 ft2 274.5589 ft2 56 ft 9.33 ft (invalid)

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 18 kBtu/hr 540 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Furnace None AFUE: 0.92 30 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.59 40 gal 37.65 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Exterior 5 259 ft2 Interior 104 ft2 Default Leakage Interior

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh akron fixed 0 0.08

Natural Gas Therm akron fixed 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:19 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
554 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Ohio Type A - 15% TMY City: OH_AKRON_AKRON

Elec Util: akron fixed

Akron, Oh, - Gas Util: akron fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:20:46

8/5/2010 11:21 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 210 kWh $17

Heating 384 Therms $392

Hot Water 141 Therms $144

Lighting 1379 kWh $110

Refrigerator 422 kWh $34

Dryer 696 kWh $56

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 525 Therms $536

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

43 kWh $3

349 kWh $28

104.74 Lbs.

30.84 Lbs.

9.23 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(30 kBtu/hr) 

Total Hot Water $144

Total Heating $420

Total Cooling 253 kWh $20

Dishwasher 114 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 210 kWh $17

2611 kWh $209

6943 kWh $556

$1092
APPENDIX C 555

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Nexus Energy Homes

1

HUD Green

Ohio Type A - 15%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1296

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , -

Akron , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1.5

e-Ratio

Cooling: $ 26 $ 16 0.62

Heating: $ 468 $ 376 0.80

Hot Water: $ 174 $ 175 1.01

Total: $ 668 $ 567 0.85

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, AKRON_AKRON-CA OH_AKRON_AKRON-CA 5 1 86 75 70 6258.5 29 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter R-Value

______ 1 Slab-On-Grade Edge Insulatio 121 ft 10 751 ft2 0 0.7 0.3

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Hip Composition shingles 903 ft2 0 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 751 ft2 N N

8/5/2010 11:21 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
556 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 38 751 ft2 0.11 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Face Brick - Wood 19 162 ft2 0 0.23 0.5

______ 2 S Exterior Face Brick - Wood 19 363 ft2 0 0.23 0.5

______ 3 E Exterior Face Brick - Wood 19 48 ft2 0 0.23 0.5

______ 4 S Exterior Face Brick - Wood 19 18 ft2 0 0.23 0.5

______ 5 E Garage Frame - Wood 19 117.17 ft2 0 0.23 0.1

______ 6 N Neighbor Frame - Wood 19 381 ft2 0 0.23 0.01

______ 7 W Exterior Frame - Wood 19 90 ft2 0 0.23 0.5

______ 8 S Exterior Frame - Wood 19 48 ft2 0 0.23 0.5

______ 9 W Exterior Frame - Wood 19 54 ft2 0 0.23 0.5

______ 10 S Exterior Frame - Wood 19 248 ft2 0 0.23 0.5

______ 11 E Exterior Frame - Wood 19 144 ft2 0 0.23 0.5

______ 12 N Neighbor Frame - Wood 19 296 ft2 0 0.23 0.01

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.4 20 ft2 

______ 2 S Insulated None 0.4 20 ft2 

______ 3 E Insulated None 0.4 20 ft2 

______ 4 E Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Wood Low-E Double Yes 0.3 0.31 N 34.5 ft2 7 ft 4 in 1 ft 0 in None None

______ 2 W Wood Low-E Double Yes 0.3 0.31 N 4 ft2 7 ft 3 in 1 ft 0 in None None

______ 3 W Wood Low-E Double Yes 0.3 0.31 N 6.67 ft2 7 ft 4 in 1 ft 0 in None None

______ 4 S Wood Low-E Double Yes 0.3 0.31 N 3 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 S Wood Low-E Double Yes 0.3 0.31 N 51.75 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 E Wood Low-E Double Yes 0.3 0.31 N 3 ft2 5 ft 4 in 1 ft 0 in None None

______ 7 W Wood Low-E Double Yes 0.3 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Wood Low-E Double Yes 0.3 0.31 N 5.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 9 S Wood Low-E Double Yes 0.3 0.31 N 21.78 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:21 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 557

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 10 E Wood Low-E Double Yes 0.3 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Default 0.00050 1700 9.15 93.3 175.5 0 cfm 0 cfm 0 20

# Floor Area Ceiling Area Exposed Wall Perimeter Avg. Wall Height Exposed Wall Insulation

GARAGE

______ 1 274.5589 ft2 274.5589 ft2 56 ft 9.33 ft (invalid)

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 18 kBtu/hr 540 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Furnace None AFUE: 0.92 30 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.59 40 gal 37.65 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 259 ft2 Interior 104 ft2 Default Leakage Interior

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh akron fixed 0 0.08

Natural Gas Therm akron fixed 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:21 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
558 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Ohio Type A - 30% TMY City: OH_AKRON_AKRON

Elec Util: akron fixed

Akron, Oh, - Gas Util: akron fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:22:31

8/5/2010 11:22 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 186 kWh $15

Heating 297 Therms $303

Hot Water 80 Therms $82

Lighting 1379 kWh $110

Refrigerator 422 kWh $34

Dryer 696 kWh $56

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 377 Therms $385

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

38 kWh $3

270 kWh $22

105.44 Lbs.

29.48 Lbs.

8.42 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(30 kBtu/hr) 

Total Hot Water $82

Total Heating $335

Total Cooling 259 kWh $21

Dishwasher 114 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

35 kWh $ 3

119 kWh $ 10

Clothes Washer 210 kWh $17

2611 kWh $209

6989 kWh $561

$946
APPENDIX C 559

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Nexus Energy Homes

1

HUD Green

Ohio Type A - 30%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1296

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , -

Akron , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1.5

e-Ratio

Cooling: $ 30 $ 17 0.57

Heating: $ 476 $ 340 0.71

Hot Water: $ 174 $ 108 0.62

Total: $ 680 $ 465 0.68

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, AKRON_AKRON-CA OH_AKRON_AKRON-CA 5 1 86 75 70 6258.5 29 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter R-Value

______ 1 Slab-On-Grade Edge Insulatio 121 ft 10 751 ft2 0 0.7 0.3

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Hip Composition shingles 903 ft2 0 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 751 ft2 N N

8/5/2010 11:23 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
560 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 49 751 ft2 0.11 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Face Brick - Wood 19 162 ft2 0 0.16 0.5

______ 2 S Exterior Face Brick - Wood 19 363 ft2 0 0.16 0.5

______ 3 E Exterior Face Brick - Wood 19 48 ft2 0 0.16 0.5

______ 4 S Exterior Face Brick - Wood 19 18 ft2 0 0.16 0.5

______ 5 E Garage Frame - Wood 19 117.17 ft2 0 0.16 0.1

______ 6 N Neighbor Frame - Wood 19 381 ft2 0 0.16 0.01

______ 7 W Exterior Frame - Wood 19 90 ft2 0 0.16 0.5

______ 8 S Exterior Frame - Wood 19 48 ft2 0 0.16 0.5

______ 9 W Exterior Frame - Wood 19 54 ft2 0 0.16 0.5

______ 10 S Exterior Frame - Wood 19 248 ft2 0 0.16 0.5

______ 11 E Exterior Frame - Wood 19 144 ft2 0 0.16 0.5

______ 12 N Neighbor Frame - Wood 19 296 ft2 0 0.16 0.01

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.4 20 ft2 

______ 2 S Insulated None 0.4 20 ft2 

______ 3 E Insulated None 0.4 20 ft2 

______ 4 E Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Wood Low-E Double Yes 0.3 0.31 N 34.5 ft2 7 ft 4 in 1 ft 0 in None None

______ 2 W Wood Low-E Double Yes 0.3 0.31 N 4 ft2 7 ft 3 in 1 ft 0 in None None

______ 3 W Wood Low-E Double Yes 0.3 0.31 N 6.67 ft2 7 ft 4 in 1 ft 0 in None None

______ 4 S Wood Low-E Double Yes 0.3 0.31 N 3 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 S Wood Low-E Double Yes 0.3 0.31 N 51.75 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 E Wood Low-E Double Yes 0.3 0.31 N 3 ft2 5 ft 4 in 1 ft 0 in None None

______ 7 W Wood Low-E Double Yes 0.3 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Wood Low-E Double Yes 0.3 0.31 N 5.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 9 S Wood Low-E Double Yes 0.3 0.31 N 21.78 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:23 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 561

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 10 E Wood Low-E Double Yes 0.3 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00030 1020 5.49 56.0 105.3 35 cfm 0 cfm 100 20

# Floor Area Ceiling Area Exposed Wall Perimeter Avg. Wall Height Exposed Wall Insulation

GARAGE

______ 1 274.5589 ft2 274.5589 ft2 56 ft 9.33 ft (invalid)

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 18 kBtu/hr 540 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Furnace None AFUE: 0.92 30 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.92 1 gal 37.65 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 259 ft2 Interior 104 ft2 Prop. Air Leakage Interior 36.00 cfm 6.00 % 0.03 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh akron fixed 0 0.08

Natural Gas Therm akron fixed 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:23 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
562 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Ohio Type A - 50% TMY City: OH_AKRON_AKRON

Elec Util: akron fixed

Akron, Oh, - Gas Util: akron fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:24:12

8/5/2010 11:24 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 170 kWh $14

Heating 241 Therms $246

Hot Water 24 Therms $24

Lighting 1379 kWh $110

Refrigerator 422 kWh $34

Dryer 696 kWh $56

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 265 Therms $270

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

34 kWh $3

227 kWh $18

104.47 Lbs.

28.04 Lbs.

7.7 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(30 kBtu/hr) 

Total Hot Water $24

Total Heating $273

Total Cooling 239 kWh $20

Dishwasher 114 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

35 kWh $ 3

118 kWh $ 9

Clothes Washer 210 kWh $17

2611 kWh $209

6925 kWh $555

$825
APPENDIX C 563

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Nexus Energy Homes

1

HUD Green

Ohio Type A - 50%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1296

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , -

Akron , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1.5

e-Ratio

Cooling: $ 30 $ 16 0.53

Heating: $ 476 $ 278 0.58

Hot Water: $ 174 $ 38 0.22

Total: $ 680 $ 332 0.49

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, AKRON_AKRON-CA OH_AKRON_AKRON-CA 5 1 86 75 70 6258.5 29 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter R-Value

______ 1 Slab-On-Grade Edge Insulatio 121 ft 10 751 ft2 0 0.7 0.3

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Hip Composition shingles 903 ft2 0 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 751 ft2 N N

8/5/2010 11:25 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
564 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 60 751 ft2 0.11 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Face Brick - Wood 19 162 ft2 0 0.16 0.5

______ 2 S Exterior Face Brick - Wood 19 363 ft2 0 0.16 0.5

______ 3 E Exterior Face Brick - Wood 19 48 ft2 0 0.16 0.5

______ 4 S Exterior Face Brick - Wood 19 18 ft2 0 0.16 0.5

______ 5 E Garage Frame - Wood 19 117.17 ft2 0 0.16 0.1

______ 6 N Neighbor Frame - Wood 19 381 ft2 0 0.16 0.01

______ 7 W Exterior Frame - Wood 19 90 ft2 5 0.16 0.5

______ 8 S Exterior Frame - Wood 19 48 ft2 5 0.16 0.5

______ 9 W Exterior Frame - Wood 19 54 ft2 5 0.16 0.5

______ 10 S Exterior Frame - Wood 19 248 ft2 5 0.16 0.5

______ 11 E Exterior Frame - Wood 19 144 ft2 5 0.16 0.5

______ 12 N Neighbor Frame - Wood 19 296 ft2 0 0.16 0.01

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.4 20 ft2 

______ 2 S Insulated None 0.4 20 ft2 

______ 3 E Insulated None 0.4 20 ft2 

______ 4 E Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Wood Low-E Double Yes 0.3 0.31 N 34.5 ft2 7 ft 4 in 1 ft 0 in None None

______ 2 W Wood Low-E Double Yes 0.3 0.31 N 4 ft2 7 ft 3 in 1 ft 0 in None None

______ 3 W Wood Low-E Double Yes 0.3 0.31 N 6.67 ft2 7 ft 4 in 1 ft 0 in None None

______ 4 S Wood Low-E Double Yes 0.3 0.31 N 3 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 S Wood Low-E Double Yes 0.3 0.31 N 51.75 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 E Wood Low-E Double Yes 0.3 0.31 N 3 ft2 5 ft 4 in 1 ft 0 in None None

______ 7 W Wood Low-E Double Yes 0.3 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Wood Low-E Double Yes 0.3 0.31 N 5.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 9 S Wood Low-E Double Yes 0.3 0.31 N 21.78 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:25 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 565

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 10 E Wood Low-E Double Yes 0.3 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00014 476 2.56 26.1 49.1 35 cfm 0 cfm 100 20

# Floor Area Ceiling Area Exposed Wall Perimeter Avg. Wall Height Exposed Wall Insulation

GARAGE

______ 1 274.5589 ft2 274.5589 ft2 56 ft 9.33 ft (invalid)

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 18 kBtu/hr 540 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Furnace None AFUE: 0.96 30 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.92 1 gal 37.65 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 259 ft2 Interior 104 ft2 Prop. Air Leakage Interior 36.00 cfm 6.00 % 0.03 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh akron fixed 0 0.08

Natural Gas Therm akron fixed 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:25 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
566 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Ohio Type A - 60% TMY City: OH_AKRON_AKRON

Elec Util: akron fixed

Akron, Oh, - Gas Util: akron fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:25:49

8/5/2010 11:26 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 116 kWh $9

Heating 191 Therms $195

Hot Water 19 Therms $19

Lighting 1379 kWh $110

Refrigerator 422 kWh $34

Dryer 696 kWh $56

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 210 Therms $214

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

24 kWh $2

136 kWh $11

102.07 Lbs.

26.93 Lbs.

7.24 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(30 kBtu/hr) 

Total Hot Water $19

Total Heating $215

Total Cooling 173 kWh $14

Dishwasher 114 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

33 kWh $ 3

116 kWh $ 9

Clothes Washer 210 kWh $17

2611 kWh $209

6766 kWh $542

$756
APPENDIX C 567

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Nexus Energy Homes

1

HUD Green

Ohio Type A - 60%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1296

2

New (From Plans)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , -

Akron , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1.5

e-Ratio

Cooling: $ 30 $ 12 0.40

Heating: $ 476 $ 224 0.47

Hot Water: $ 174 $ 31 0.18

Total: $ 680 $ 267 0.39

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, AKRON_AKRON-CA OH_AKRON_AKRON-CA 5 1 86 75 70 6258.5 29 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter R-Value

______ 1 Slab-On-Grade Edge Insulatio 121 ft 10 751 ft2 0 0.7 0.3

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Hip Composition shingles 903 ft2 0 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 751 ft2 N N

8/5/2010 11:30 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
568 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 60 751 ft2 0.11 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Face Brick - Wood 19 162 ft2 0 0.16 0.5

______ 2 S Exterior Face Brick - Wood 19 363 ft2 0 0.16 0.5

______ 3 E Exterior Face Brick - Wood 19 48 ft2 0 0.16 0.5

______ 4 S Exterior Face Brick - Wood 19 18 ft2 0 0.16 0.5

______ 5 E Garage Frame - Wood 19 117.17 ft2 5 0.16 0.1

______ 6 N Neighbor Frame - Wood 19 381 ft2 0 0.16 0.01

______ 7 W Exterior Frame - Wood 19 90 ft2 5 0.16 0.5

______ 8 S Exterior Frame - Wood 19 48 ft2 5 0.16 0.5

______ 9 W Exterior Frame - Wood 19 54 ft2 5 0.16 0.5

______ 10 S Exterior Frame - Wood 19 248 ft2 5 0.16 0.5

______ 11 E Exterior Frame - Wood 19 144 ft2 5 0.16 0.5

______ 12 N Neighbor Frame - Wood 19 296 ft2 0 0.16 0.01

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.2 20 ft2 

______ 2 S Insulated None 0.2 20 ft2 

______ 3 E Insulated None 0.2 20 ft2 

______ 4 E Insulated None 0.2 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Wood Low-E Triple Yes 0.2 0.31 N 34.5 ft2 7 ft 4 in 1 ft 0 in None None

______ 2 W Wood Low-E Triple Yes 0.2 0.31 N 4 ft2 7 ft 3 in 1 ft 0 in None None

______ 3 W Wood Low-E Triple Yes 0.2 0.31 N 6.67 ft2 7 ft 4 in 1 ft 0 in None None

______ 4 S Wood Low-E Triple Yes 0.2 0.31 N 3 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 S Wood Low-E Triple Yes 0.2 0.31 N 51.75 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 E Wood Low-E Triple Yes 0.2 0.31 N 3 ft2 5 ft 4 in 1 ft 0 in None None

______ 7 W Wood Low-E Triple Yes 0.2 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Wood Low-E Triple Yes 0.2 0.31 N 5.44 ft2 0 ft 0 in 0 ft 0 in None None

______ 9 S Wood Low-E Triple Yes 0.2 0.31 N 21.78 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:30 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 569

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 10 E Wood Low-E Triple Yes 0.2 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00010 340 1.83 18.7 35.1 35 cfm 0 cfm 100 20

# Floor Area Ceiling Area Exposed Wall Perimeter Avg. Wall Height Exposed Wall Insulation

GARAGE

______ 1 274.5589 ft2 274.5589 ft2 56 ft 9.33 ft (invalid)

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 18 18 kBtu/hr 540 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Furnace None AFUE: 0.98 30 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.98 1 gal 37.65 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 259 ft2 Interior 104 ft2 Prop. Air Leakage Interior 36.00 cfm 6.00 % 0.03 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh akron fixed 0 0.08

Natural Gas Therm akron fixed 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:30 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
570 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX C 571

APPENDIX C

ENERGY MODELS

B. Akron, Ohio – Single Family Home
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

12.8 UA

Std2006 Proposed Bronze - 15% Silver - 30% Gold - 50% Emerald - 60%

0.88 0.82 0.71 0.50 0.40

79 76 60 51 46

06 IECC

2006 IECC 

Compliance 

Standard Calc 

-Base

Percenta

ge Better 

than 

2006 

IECC

2006 IECC 

Compliance 

Standard 

Calc - 15%

2006 IECC 

Compliance 

Standard 

Calc - 30%

2006 IECC 

Compliance 

Standard 

Calc - 50%

2006 IECC 

Compliance 

Standard 

Calc - 60%

1908 1908 1908 1908 1908 1908

2 2 2 2 2 2

sement Basement Basement Basement Basement Basement

4 4 4 4 4 4

2.5 2.5 2.5 2.5 2.5 2.5

28.73 38 38 49 60 60 raised heel truss

26.01 30 30 30 30 30

x wood 2x6-16"oc 2x6-16"oc 2x6-24"oc 2x6-24"oc 2x6-24"oc

14.33 19/0 19/0 19/0 19/5 19/10

10

2,300 2,300 2,300 2,300 2,300 2,300

0.35 0.3 0.30 0.30 0.30 0.20 lowE triple pane

0.40 0.31 0.31 0.31 0.31 0.31

243 243 243 243 243 243

2.74% 12.74% 12.74% 12.74% 12.74% 12.74%

00036 0.00036 0.00036 0.00024 0.00014 0.0001

6.8 6.80 6.8 4.53 2.64 1.89

0 none none yes yes yes

13 13 13 13 13 18

24.87 30 30 30 30 24

78% 92% 92% 92% 96% 98%

50.4 66 66 66 42 42

t given 0 0 0

0.00% 12.00% 12.00% 6.00% 6.00% 6.00%

n/a n/a 0.083 0.028 0.028 0.028

6 n/a 1 1 1 1

nside Interior Interior Interior Interior Interior

nside Interior Interior Interior Interior Interior

70 70 70 70 70 w/ 64 sf 70 w/64 sf

0.57 0.59 0.59 0.92 0.92 closed loop 0.98 closed loop

50 50 40 1 1 Solar 1 Solar

78 78 78 78 78 78

68 68 68 68 68 68

No No Yes Yes Yes Yes

none none 2/6 2/6 2/6 2/6

none none 2/7 2/7 2/7 2/7

10 10% 10% 10% 10% 10%

74 38 48.65% 35 52.70% 36 51.35% 37 50.00% 19 74.32%

718 635 11.56% 577 19.64% 527 26.60% 402 44.01% 329 54.18%

233 225 3.43% 226 3.00% 152 34.76% 63 72.96% 53 77.25%

1,025 898 12.39% 838 18.24% 715 30.24% 502 51.02% 401 60.88%

 level.

CC number is manipulated to original, so saving increases over e-Ratio

when there is no added ventilation @ 0.00036 (ashrea 62.2)

hus moving them into conditioned space

loor exterior walls (no brick, partition or garage)

on walls, and garage walls
Akron, OhioD - Unit (single family home)

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 43 40 3 7% 40 3 7% 39 4 9% 23 20 47%Heating Cost 749 679 70 9% 543 206 28% 422 327 44% 219 530 71%Hot Water Heating Cost 182 182 0 0% 114 68 37% 39 143 79% 39 143 79%HVAC & hwh Savings N/A 73 277 474 693

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 711 711 711 711 711

HVAC & HWH sub-total 974 901 7% 697 28% 500 49% 281 71%

Grand Total 1685 1612 96% 1408 84% 1211 72% 992 59%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Silv

Gold

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELs SavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost
574 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Ohio Type D - Base TMY City: OH_AKRON_AKRON

Elec Util: akron fixed

Akron, Oh, - Gas Util: akron fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:30:54

8/5/2010 11:31 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 450 kWh $36

Heating 686 Therms $700

Hot Water 178 Therms $182

Lighting 2345 kWh $188

Refrigerator 422 kWh $34

Dryer 974 kWh $78

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 864 Therms $882

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

92 kWh $7

617 kWh $49

151.25 Lbs.

45.42 Lbs.

13.96 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(30 kBtu/hr) 

(66 kBtu/hr) 

Total Hot Water $182

Total Heating $749

Total Cooling 542 kWh $43

Dishwasher 159 kWh $13

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 295 kWh $24

3763 kWh $301

10026 kWh $803

$1685
APPENDIX C 575

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

1

HUD Green

Ohio Type D - Base

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1908

4

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , -

Akron , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2.5

e-Ratio

Cooling: $ 74 $ 39 0.53

Heating: $ 717 $ 634 0.88

Hot Water: $ 233 $ 225 0.97

Total: $ 1024 $ 898 0.88

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, AKRON_AKRON-CA OH_AKRON_AKRON-CA 5 1 86 75 70 6258.5 29 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter Perimeter R-Value Joist R-Value

______ Basement Finished 1 978 ft2 100

______ 2 Raised Floor 59 ft2 30 001

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1246 ft2 346 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 1037 ft2 N N

8/5/2010 11:31 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
576 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 38 1037 ft2 0.11 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 54 ft2 0 0.23 0.5

______ 2 N Exterior Frame - Wood 19 63 ft2 0 0.23 0.5

______ 3 W Exterior Frame - Wood 19 144 ft2 0 0.23 0.5

______ 4 S Exterior Frame - Wood 19 432 ft2 0 0.23 0.5

______ 5 E Exterior Frame - Wood 19 144 ft2 0 0.23 0.5

______ 6 N Exterior Frame - Wood 19 54 ft2 0 0.23 0.5

______ 7 E Exterior Frame - Wood 19 54 ft2 0 0.23 0.5

______ 8 N Exterior Frame - Wood 19 315 ft2 0 0.23 0.5

______ 9 W Exterior Frame - Wood 19 88 ft2 0 0.23 0.5

______ 10 N Exterior Frame - Wood 19 12 ft2 0 0.23 0.5

______ 11 W Exterior Frame - Wood 19 88 ft2 0 0.23 0.5

______ 12 S Exterior Frame - Wood 19 344 ft2 0 0.23 0.5

______ 13 E Exterior Frame - Wood 19 176 ft2 0 0.23 0.5

______ 14 N Exterior Frame - Wood 19 332 ft2 0 0.23 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.4 20 ft2 

______ 2 N Insulated None 0.4 20 ft2 

______ 3 E Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Wood Low-E Double Yes 0.3 0.31 N 4 ft2 7 ft 4 in 1 ft 0 in None None

______ 2 W Wood Low-E Double Yes 0.3 0.31 N 6.67 ft2 7 ft 3 in 1 ft 0 in None None

______ 3 W Wood Low-E Double Yes 0.3 0.31 N 34.5 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Wood Low-E Double Yes 0.3 0.31 N 21.78 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 E Wood Low-E Double Yes 0.3 0.31 N 34.5 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 N Wood Low-E Double Yes 0.3 0.31 N 3 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 N Wood Low-E Double Yes 0.3 0.31 N 16.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Wood Low-E Double Yes 0.3 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:31 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 577

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 9 W Wood Low-E Double Yes 0.3 0.31 N 30 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 S Wood Low-E Double Yes 0.3 0.31 N 10.89 ft2 0 ft 0 in 0 ft 0 in None None

______ 11 E Vinyl Low-E Double Yes 0.3 0.31 N 30 ft2 0 ft 0 in 0 ft 0 in None None

______ 12 E Vinyl Low-E Double Yes 0.3 0.31 N 20 ft2 0 ft 0 in 0 ft 0 in None None

______ 13 N Vinyl Low-E Double Yes 0.3 0.31 N 16.33 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Default 0.00050 3785 9.45 207.8 390.8 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 30 kBtu/hr 900 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Furnace None AFUE: 0.92 66 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.59 50 gal 52.7 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 5 577 ft2 Interior 231 ft2 Default Leakage Interior

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh akron fixed 0 0.08

Natural Gas Therm akron fixed 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:31 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
578 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Ohio Type D - 15% TMY City: OH_AKRON_AKRON

Elec Util: akron fixed

Akron, Oh, - Gas Util: akron fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:32:48

8/5/2010 11:33 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 413 kWh $33

Heating 623 Therms $635

Hot Water 178 Therms $182

Lighting 2345 kWh $188

Refrigerator 422 kWh $34

Dryer 974 kWh $78

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 802 Therms $817

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

85 kWh $7

555 kWh $44

149.65 Lbs.

44.47 Lbs.

13.5 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(30 kBtu/hr) 

(66 kBtu/hr) 

Total Hot Water $182

Total Heating $679

Total Cooling 498 kWh $40

Dishwasher 159 kWh $13

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 295 kWh $24

3763 kWh $301

9920 kWh $795

$1612
APPENDIX C 579

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

1

HUD Green

Ohio Type D - 15%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1908

4

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , -

Akron , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2.5

e-Ratio

Cooling: $ 74 $ 35 0.47

Heating: $ 717 $ 577 0.80

Hot Water: $ 233 $ 226 0.97

Total: $ 1024 $ 838 0.82

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, AKRON_AKRON-CA OH_AKRON_AKRON-CA 5 1 86 75 70 6258.5 29 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter Perimeter R-Value Joist R-Value

______ Basement Finished 1 978 ft2 100

______ 2 Raised Floor 59 ft2 30 001

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1246 ft2 346 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 1037 ft2 N N

8/5/2010 11:33 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
580 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 38 1037 ft2 0.11 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 54 ft2 0 0.23 0.5

______ 2 N Exterior Frame - Wood 19 63 ft2 0 0.23 0.5

______ 3 W Exterior Frame - Wood 19 144 ft2 0 0.23 0.5

______ 4 S Exterior Frame - Wood 19 432 ft2 0 0.23 0.5

______ 5 E Exterior Frame - Wood 19 144 ft2 0 0.23 0.5

______ 6 N Exterior Frame - Wood 19 54 ft2 0 0.23 0.5

______ 7 E Exterior Frame - Wood 19 54 ft2 0 0.23 0.5

______ 8 N Exterior Frame - Wood 19 315 ft2 0 0.23 0.5

______ 9 W Exterior Frame - Wood 19 88 ft2 0 0.23 0.5

______ 10 N Exterior Frame - Wood 19 12 ft2 0 0.23 0.5

______ 11 W Exterior Frame - Wood 19 88 ft2 0 0.23 0.5

______ 12 S Exterior Frame - Wood 19 344 ft2 0 0.23 0.5

______ 13 E Exterior Frame - Wood 19 176 ft2 0 0.23 0.5

______ 14 N Exterior Frame - Wood 19 332 ft2 0 0.23 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.4 20 ft2 

______ 2 N Insulated None 0.4 20 ft2 

______ 3 E Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Wood Low-E Double Yes 0.3 0.31 N 4 ft2 7 ft 4 in 1 ft 0 in None None

______ 2 W Wood Low-E Double Yes 0.3 0.31 N 6.67 ft2 7 ft 3 in 1 ft 0 in None None

______ 3 W Wood Low-E Double Yes 0.3 0.31 N 34.5 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Wood Low-E Double Yes 0.3 0.31 N 21.78 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 E Wood Low-E Double Yes 0.3 0.31 N 34.5 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 N Wood Low-E Double Yes 0.3 0.31 N 3 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 N Wood Low-E Double Yes 0.3 0.31 N 16.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Wood Low-E Double Yes 0.3 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:33 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 581

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 9 W Wood Low-E Double Yes 0.3 0.31 N 30 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 S Wood Low-E Double Yes 0.3 0.31 N 10.89 ft2 0 ft 0 in 0 ft 0 in None None

______ 11 E Vinyl Low-E Double Yes 0.3 0.31 N 30 ft2 0 ft 0 in 0 ft 0 in None None

______ 12 E Vinyl Low-E Double Yes 0.3 0.31 N 20 ft2 0 ft 0 in 0 ft 0 in None None

______ 13 N Vinyl Low-E Double Yes 0.3 0.31 N 16.33 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Default 0.00050 3785 9.45 207.8 390.8 0 cfm 0 cfm 0 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 30 kBtu/hr 900 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Furnace None AFUE: 0.92 66 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.59 50 gal 52.7 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 577 ft2 Interior 231 ft2 Prop. Air Leakage Interior 158.40 cf 12.00 % 0.08 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh akron fixed 0 0.08

Natural Gas Therm akron fixed 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:33 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
582 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Ohio Type D - 30% TMY City: OH_AKRON_AKRON

Elec Util: akron fixed

Akron, Oh, - Gas Util: akron fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:34:46

8/5/2010 11:34 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 389 kWh $31

Heating 489 Therms $499

Hot Water 112 Therms $114

Lighting 2345 kWh $188

Refrigerator 422 kWh $34

Dryer 974 kWh $78

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 601 Therms $613

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

80 kWh $6

432 kWh $35

149.61 Lbs.

42.41 Lbs.

12.32 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(30 kBtu/hr) 

(66 kBtu/hr) 

Total Hot Water $114

Total Heating $543

Total Cooling 505 kWh $40

Dishwasher 159 kWh $13

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

36 kWh $ 3

113 kWh $ 9

Clothes Washer 295 kWh $24

3763 kWh $301

9917 kWh $795

$1408
APPENDIX C 583

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

1

HUD Green

Ohio Type D - 30%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1908

4

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , -

Akron , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2.5

e-Ratio

Cooling: $ 81 $ 37 0.46

Heating: $ 728 $ 526 0.72

Hot Water: $ 225 $ 152 0.68

Total: $ 1034 $ 715 0.69

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, AKRON_AKRON-CA OH_AKRON_AKRON-CA 5 1 86 75 70 6258.5 29 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter Perimeter R-Value Joist R-Value

______ Basement Finished 1 978 ft2 100

______ 2 Raised Floor 59 ft2 30 001

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1246 ft2 346 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 1037 ft2 N N

8/5/2010 11:35 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
584 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 49 1037 ft2 0.11 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 54 ft2 0 0.16 0.5

______ 2 N Exterior Frame - Wood 19 63 ft2 0 0.16 0.5

______ 3 W Exterior Frame - Wood 19 144 ft2 0 0.16 0.5

______ 4 S Exterior Frame - Wood 19 432 ft2 0 0.16 0.5

______ 5 E Exterior Frame - Wood 19 144 ft2 0 0.16 0.5

______ 6 N Exterior Frame - Wood 19 54 ft2 0 0.16 0.5

______ 7 E Exterior Frame - Wood 19 54 ft2 0 0.16 0.5

______ 8 N Exterior Frame - Wood 19 315 ft2 0 0.16 0.5

______ 9 W Exterior Frame - Wood 19 88 ft2 0 0.16 0.5

______ 10 N Exterior Frame - Wood 19 12 ft2 0 0.16 0.5

______ 11 W Exterior Frame - Wood 19 88 ft2 0 0.16 0.5

______ 12 S Exterior Frame - Wood 19 344 ft2 0 0.16 0.5

______ 13 E Exterior Frame - Wood 19 176 ft2 0 0.16 0.5

______ 14 N Exterior Frame - Wood 19 332 ft2 0 0.16 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.4 20 ft2 

______ 2 N Insulated None 0.4 20 ft2 

______ 3 E Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Wood Low-E Double Yes 0.3 0.31 N 4 ft2 7 ft 4 in 1 ft 0 in None None

______ 2 W Wood Low-E Double Yes 0.3 0.31 N 6.67 ft2 7 ft 3 in 1 ft 0 in None None

______ 3 W Wood Low-E Double Yes 0.3 0.31 N 34.5 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Wood Low-E Double Yes 0.3 0.31 N 21.78 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 E Wood Low-E Double Yes 0.3 0.31 N 34.5 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 N Wood Low-E Double Yes 0.3 0.31 N 3 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 N Wood Low-E Double Yes 0.3 0.31 N 16.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Wood Low-E Double Yes 0.3 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:35 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 585

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 9 W Wood Low-E Double Yes 0.3 0.31 N 30 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 S Wood Low-E Double Yes 0.3 0.31 N 10.89 ft2 0 ft 0 in 0 ft 0 in None None

______ 11 E Vinyl Low-E Double Yes 0.3 0.31 N 30 ft2 0 ft 0 in 0 ft 0 in None None

______ 12 E Vinyl Low-E Double Yes 0.3 0.31 N 20 ft2 0 ft 0 in 0 ft 0 in None None

______ 13 N Vinyl Low-E Double Yes 0.3 0.31 N 16.33 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00024 1817 4.53 99.7 187.6 0 cfm 67 cfm 100 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 30 kBtu/hr 900 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Furnace None AFUE: 0.92 66 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.92 1 gal 52.7 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 577 ft2 Interior 231 ft2 Prop. Air Leakage Interior 79.20 cfm 6.00 % 0.04 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh akron fixed 0 0.08

Natural Gas Therm akron fixed 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:35 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
586 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Ohio Type D - 50% TMY City: OH_AKRON

Elec Util: akron fixed

Akron, Oh, - Gas Util: akron fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:36:23

8/5/2010 11:36 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 376 kWh $30

Heating 378 Therms $386

Hot Water 38 Therms $39

Lighting 2345 kWh $188

Refrigerator 422 kWh $34

Dryer 974 kWh $78

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 415 Therms $425

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

78 kWh $6

339 kWh $27

147.99 Lbs.

40.09 Lbs.

11.15 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(30 kBtu/hr) 

(42 kBtu/hr) 

Total Hot Water $39

Total Heating $422

Total Cooling 491 kWh $39

Dishwasher 159 kWh $13

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

37 kWh $ 3

113 kWh $ 9

Clothes Washer 295 kWh $24

3763 kWh $301

9810 kWh $786

$1211
APPENDIX C 587

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

1

HUD Green

Ohio Type D - 50%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1908

4

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , -

Akron , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2.5

e-Ratio

Cooling: $ 78 $ 36 0.46

Heating: $ 699 $ 406 0.58

Hot Water: $ 225 $ 59 0.26

Total: $ 1002 $ 501 0.50

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, Akron-Canton OH_AKRON 5 6 86 75 70 6224 26 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter Perimeter R-Value Joist R-Value

______ Basement Finished 1 978 ft2 100

______ 2 Raised Floor 59 ft2 30 001

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1246 ft2 346 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 1037 ft2 N N

8/5/2010 11:37 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
588 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 60 1037 ft2 0.11 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 54 ft2 5 0.16 0.5

______ 2 N Exterior Frame - Wood 19 63 ft2 5 0.16 0.5

______ 3 W Exterior Frame - Wood 19 144 ft2 5 0.16 0.5

______ 4 S Exterior Frame - Wood 19 432 ft2 5 0.16 0.5

______ 5 E Exterior Frame - Wood 19 144 ft2 5 0.16 0.5

______ 6 N Exterior Frame - Wood 19 54 ft2 5 0.16 0.5

______ 7 E Exterior Frame - Wood 19 54 ft2 5 0.16 0.5

______ 8 N Exterior Frame - Wood 19 315 ft2 5 0.16 0.5

______ 9 W Exterior Frame - Wood 19 88 ft2 5 0.16 0.5

______ 10 N Exterior Frame - Wood 19 12 ft2 5 0.16 0.5

______ 11 W Exterior Frame - Wood 19 88 ft2 5 0.16 0.5

______ 12 S Exterior Frame - Wood 19 344 ft2 5 0.16 0.5

______ 13 E Exterior Frame - Wood 19 176 ft2 5 0.16 0.5

______ 14 N Exterior Frame - Wood 19 332 ft2 0 0.16 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.4 20 ft2 

______ 2 N Insulated None 0.4 20 ft2 

______ 3 E Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Wood Low-E Double Yes 0.3 0.31 N 4 ft2 7 ft 4 in 1 ft 0 in None None

______ 2 W Wood Low-E Double Yes 0.3 0.31 N 6.67 ft2 7 ft 3 in 1 ft 0 in None None

______ 3 W Wood Low-E Double Yes 0.3 0.31 N 34.5 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Wood Low-E Double Yes 0.3 0.31 N 21.78 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 E Wood Low-E Double Yes 0.3 0.31 N 34.5 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 N Wood Low-E Double Yes 0.3 0.31 N 3 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 N Wood Low-E Double Yes 0.3 0.31 N 16.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Wood Low-E Double Yes 0.3 0.31 N 15 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:37 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 589

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 9 W Wood Low-E Double Yes 0.3 0.31 N 30 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 S Wood Low-E Double Yes 0.3 0.31 N 10.89 ft2 0 ft 0 in 0 ft 0 in None None

______ 11 E Vinyl Low-E Double Yes 0.3 0.31 N 30 ft2 0 ft 0 in 0 ft 0 in None None

______ 12 E Vinyl Low-E Double Yes 0.3 0.31 N 20 ft2 0 ft 0 in 0 ft 0 in None None

______ 13 N Vinyl Low-E Double Yes 0.3 0.31 N 16.33 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00014 1060 2.64 58.2 109.4 0 cfm 67 cfm 100 20

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 30 kBtu/hr 900 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Furnace None AFUE: 0.92 42 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.92 1 gal 52.7 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 577 ft2 Interior 231 ft2 Prop. Air Leakage Interior 54.00 cfm 6.00 % 0.03 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh akron fixed 0 0.08

Natural Gas Therm akron fixed 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:37 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
590 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

HUD Green Title: Ohio Type D - 60% TMY City: OH_AKRON

Elec Util: akron fixed

Akron, Oh, - Gas Util: akron fixed

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:38:05

8/5/2010 11:38 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 235 kWh $19

Heating 200 Therms $204

Hot Water 38 Therms $39

Lighting 2345 kWh $188

Refrigerator 422 kWh $34

Dryer 974 kWh $78

Range 909 kWh $73

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 237 Therms $243

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

51 kWh $4

182 kWh $15

140.83 Lbs.

36.72 Lbs.

9.69 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(15.7 kBtu/hr) 

(42 kBtu/hr) 

Total Hot Water $39

Total Heating $219

Total Cooling 286 kWh $23

Dishwasher 159 kWh $13

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 295 kWh $24

3763 kWh $301

9335 kWh $749

$992
APPENDIX C 591

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Tegrity Homes

1

HUD Green

Ohio Type D - 60%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

2

1908

4

New (From Plans)

Single-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , -

Akron , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 2.5

e-Ratio

Cooling: $ 72 $ 21 0.29

Heating: $ 687 $ 324 0.47

Hot Water: $ 225 $ 59 0.26

Total: $ 984 $ 404 0.41

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, Akron-Canton OH_AKRON 5 6 86 75 70 6224 26 Medium

# Floor Type Area Tile Wood Carpet

FLOORS

Perimeter Perimeter R-Value Joist R-Value

______ Basement Finished 1 978 ft2 100

______ 2 Raised Floor 59 ft2 30 001

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Gable or shed Composition shingles 1246 ft2 346 ft2 Medium 0.85 No 0 33.7 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 Full attic Vented 300 1037 ft2 N N

8/5/2010 11:39 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
592 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Vented) 60 1037 ft2 0.07 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 54 ft2 10 0.2 0.5

______ 2 N Exterior Frame - Wood 19 63 ft2 10 0.2 0.5

______ 3 W Exterior Frame - Wood 19 144 ft2 10 0.2 0.5

______ 4 S Exterior Frame - Wood 19 432 ft2 10 0.2 0.5

______ 5 E Exterior Frame - Wood 19 144 ft2 10 0.2 0.5

______ 6 N Exterior Frame - Wood 19 54 ft2 10 0.2 0.5

______ 7 E Exterior Frame - Wood 19 54 ft2 10 0.2 0.5

______ 8 N Exterior Frame - Wood 19 315 ft2 10 0.2 0.5

______ 9 W Exterior Frame - Wood 19 88 ft2 10 0.2 0.5

______ 10 N Exterior Frame - Wood 19 12 ft2 10 0.2 0.5

______ 11 W Exterior Frame - Wood 19 88 ft2 10 0.2 0.5

______ 12 S Exterior Frame - Wood 19 344 ft2 10 0.2 0.5

______ 13 E Exterior Frame - Wood 19 176 ft2 10 0.2 0.5

______ 14 N Exterior Frame - Wood 19 332 ft2 10 0.2 0.5

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 W Insulated None 0.18 20 ft2 

______ 2 N Insulated None 0.18 20 ft2 

______ 3 E Insulated None 0.18 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Wood Low-E Triple Yes 0.23 0.35 N 4 ft2 7 ft 4 in 1 ft 0 in None None

______ 2 W Wood Low-E Triple Yes 0.23 0.35 N 6.67 ft2 7 ft 3 in 1 ft 0 in None None

______ 3 W Wood Low-E Triple Yes 0.23 0.35 N 34.5 ft2 0 ft 0 in 0 ft 0 in None None

______ 4 S Wood Low-E Triple Yes 0.23 0.35 N 21.78 ft2 0 ft 0 in 0 ft 0 in None None

______ 5 E Wood Low-E Triple Yes 0.23 0.35 N 34.5 ft2 0 ft 0 in 0 ft 0 in None None

______ 6 N Wood Low-E Triple Yes 0.23 0.35 N 3 ft2 0 ft 0 in 0 ft 0 in None None

______ 7 N Wood Low-E Triple Yes 0.23 0.35 N 16.33 ft2 0 ft 0 in 0 ft 0 in None None

______ 8 W Wood Low-E Triple Yes 0.23 0.35 N 15 ft2 0 ft 0 in 0 ft 0 in None None

8/5/2010 11:39 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 593

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 9 W Wood Low-E Triple Yes 0.23 0.35 N 30 ft2 0 ft 0 in 0 ft 0 in None None

______ 10 S Wood Low-E Triple Yes 0.23 0.35 N 10.89 ft2 0 ft 0 in 0 ft 0 in None None

______ 11 E Vinyl Low-E Triple Yes 0.23 0.35 N 30 ft2 0 ft 0 in 0 ft 0 in None None

______ 12 E Vinyl Low-E Triple Yes 0.23 0.35 N 20 ft2 0 ft 0 in 0 ft 0 in None None

______ 13 N Vinyl Low-E Triple Yes 0.23 0.35 N 16.33 ft2 0 ft 0 in 0 ft 0 in None None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Proposed SLA 0.00010 757 1.89 41.6 78.2 0 cfm 67 cfm 0 30

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 15.7 kBtu/hr 480 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Furnace None AFUE: 0.96 42 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.92 1 gal 52.7 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 577 ft2 Interior 231 ft2 Prop. Air Leakage Interior 50.40 cfm 6.00 % 0.03 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh akron fixed 0 0.08

Natural Gas Therm akron fixed 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:39 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
594 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX C 595

APPENDIX C

ENERGY MODELS

C. Cuyahoga, Ohio
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

ew Apts.

evation 

15% - Elect 30% - Gas 50% - Gas

IECCStd2006 IECCStd2006 Proposed

0.96 0.84 0.71 0.49

West Front-3 West Front-3 West Front-3 West Front-3

evation 

2006 IECC 

with Natural 

Gas

2006 IECC 2006 IECC B1 3rd electric

%Better 

than 

2006 

IECC

As built 1 

BR end 

3rd floor

%Better 

than 

2006 

IECC

B1-3rd 

Natural 

Gas

%Better 

than 

2006 

IECC

B1-3rd 

Natural Gas

%Better 

than 

2006 

IECC

658 658 658 658 658 658

1 1 1 1 1 1

Slab Slab frame/neighbor fr/neigh fr/neigh fr/neigh

1 1 1 1 1 1

1 1 1 1 1 1

38 38 38/raised 60/raised 60/raised 75/raised

2x6-16 2x6-16 2x6-16"oc 2x6-16"oc 2x6-16"oc 2x6-16"oc

19 19 19 19 19/5 19/0

10 10 Cond. Unit Cond. Unit Cond. Unit Cond. Unit

562 562 633 633 633 633

320 320 362 362 362 362

0.35 0.35 0.35 0.30 0.30 0.30

0.40 0.40 0.35 0.35 0.30 0.35

70 70 70 70 70 70

10.65% 10.65% 10.65% 10.65% 10.65% 10.65%

0.00036 0.00036 0.00036 0.00035 0.00035 0.00015

24 24 24 12

13 13 13 13 14 14

9 11 18 18 12

0.78 78% 7.7 8.2 94% gas 95% boiler

11 14 19 18

20.00% 20.00% 20.00% 6.00% 6.00% 3.00%

6 6 1 1 1 1

Inside Inside Inside Inside Inside InsideInside Inside Inside Inside Inside Inside

35 35 35 35 35 35

0.59 0.59 0.92 0.92 70% gas 85% boiler

40 40 40 40 40 w/CLS 24sf w/ CLS 64sf

78 78 78 78 78 7868 68 68 68 68 68

No No Yes Yes Yes Yes

none none 2/6 2/6 2/6 2/6none none 2/7 2/7 2/7 2/7

14% 14% 14% 14%

79 79 78 1.27% 72 8.86% 60 24.05% 62 21.52%

130 163 144 11.66% 84 48.47% 68 47.69% 54 58.46%

139 291 291 0.00% 290 0.34% 115 17.27% 51 63.31%

348 533 513 3.75% 446 16.32% 243 30.17% 167 52.01%

at each level.

 documents = 30 cfm (calculated requirement for ASHRAE 62.2 compliance = 24). Run time vent is

owever, it has been set at 24 cfm. Ventilation cost defined for 2006 IECC reference; kWh/yr=85.05

$10.12

odeled with R-11, per plan through 30%. Higher efficiencies require R-13.

below 4ACH50 and ducts below 6% doesn't appear to impact energy savings.

m_dcu_SOH_a.htm 9.16 10.46 13 14.39 13.47 14.51 12.4983

1 Cubic Foot = 1,028 Btu (based on U.S. consumption, 2008);
Cuyahoga, Ohio

Electric Gas

Annual Energy Summary Yr $ Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings 

Cooling Cost 88 88 73 15 17% 59 29 33% 63 25 28% 60 28 Heating Cost 105 83 58 47 45% 78 27 26% 29 54 65% 20 63 Hot Water Heating Cost 257 132 257 0 0% 145 112 44% 42 90 68% 30 102 HVAC & hwh Savings N/A N/A 62 168 169 193

Appliances/MELs Savings N/A N/A 80 80 80 80

Appliances/MELs Cost 673 673 593 593 593 593

HVAC & HWH sub-total 450 303 388 14% 282 37% 134 56% 110 

Grand Total 1123 976 981 87% 875 78% 727 74% 703 

Data based on Energy Gauge - Annual Energy Summary. Not ComplianceThis apartment was energy source changed from electric to gas. Compliance increase is based on same source

Emerald

Base

Bronze Silver Gold

Base Cost

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Silv

Gold

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELs SavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water Heating CostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost
598 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: B1 3rd base TMY City: OH_BURKE_LAKEF

Elec Util: OHIO Cleveland

Cuyahoga, Oh, Gas Util: Ohio Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:40:24

8/5/2010 11:40 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 595 kWh $71

Heating 755 kWh $90

Hot Water 2161 kWh $257

Lighting 1335 kWh $159

Refrigerator 484 kWh $58

Dryer 662 kWh $79

Range 909 kWh $108

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

140 kWh $17

129 kWh $15

142.28 Lbs.

34.8 Lbs.

8.39 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(8.5 kBtu/hr) 

(12 kBtu/hr) 

Total Hot Water 2161 kWh $257

Total Heating 884 kWh $105

Total Cooling 735 kWh $88

Dishwasher 87 kWh $10

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 43 kWh $5

2131 kWh $254

9431 kWh $1123

$1123
APPENDIX C 599

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

HUD

1

B1 3rd base

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

658

1

New (Confirmed)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , 

Cuyahoga , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 79 $ 78 0.99

Heating: $ 163 $ 144 0.88

Hot Water: $ 291 $ 291 1.00

Total: $ 533 $ 513 0.96

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, BURKE_LAKEFRON OH_BURKE_LAKEFRON 5 9 84 75 70 6068 33 Medium

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Flat Composition shingles 660 ft2 28 ft2 White 0.73 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 No attic Unvented 0 658 ft2 N N

8/5/2010 11:42 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
600 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Unvented) 38 658 ft2 0.07 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 106.67 ft2 0 0.2 0.5

______ 2 S Exterior Frame - Wood 19 16 ft2 0 0.2 0.5

______ 3 W Exterior Frame - Wood 19 99.33 ft2 0 0.2 0.5

______ 4 S Exterior Frame - Wood 19 98 ft2 0 0.2 0.5

______ 5 S Neighbor Frame - Wood 11 113.33 ft2 0.2 0.1

______ 6 E Neighbor Frame - Wood 11 206 ft2 0.2 0.1

______ 7 N Neighbor Frame - Wood 11 24 ft2 0.2 0.1

______ 8 N Neighbor Frame - Wood 11 211.33 ft2 0.2 0.1

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 E Insulated None 0.46 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Vinyl Low-E Double Yes 0.35 0.35 N 60 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 2 W Vinyl Low-E Double Yes 0.35 0.35 N 10 ft2 0 ft 0 in 0 ft 0 in IECC None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Tested Single Point BD 0.00036 620 7.07 34.0 64.0 24 cfm 0 cfm 0 0

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 18 kBtu/hr 540 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 7.7 18 kBtu/hr False

8/5/2010 11:42 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 601

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.92 40 gal 35 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 189.8 ft Interior 47.45 ft Default Leakage Interior

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh OHIO Cleveland 0 0.119

Natural Gas Therm Ohio Average 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:42 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
602 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: B1 3rd 15% TMY City: OH_BURKE_LAKEF

Elec Util: OHIO Cleveland

Cuyahoga, Oh, Gas Util: Ohio Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:43:02

8/5/2010 11:43 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 493 kWh $59

Heating 422 kWh $50

Hot Water 2159 kWh $257

Lighting 664 kWh $79

Refrigerator 484 kWh $58

Dryer 662 kWh $79

Range 909 kWh $108

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 0 Therms $0

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

116 kWh $14

66 kWh $8

124.25 Lbs.

30.39 Lbs.

7.33 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(7.8 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water 2159 kWh $257

Total Heating 488 kWh $58

Total Cooling 609 kWh $73

Dishwasher 87 kWh $10

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 43 kWh $5

2131 kWh $254

8236 kWh $981

$981
APPENDIX C 603

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

HUD

1

B1 3rd 15%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

658

1

New (Confirmed)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , 

Cuyahoga , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 79 $ 72 0.91

Heating: $ 163 $ 84 0.52

Hot Water: $ 291 $ 290 1.00

Total: $ 533 $ 446 0.84

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, BURKE_LAKEFRON OH_BURKE_LAKEFRON 5 9 84 75 70 6068 33 Medium

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Flat Composition shingles 660 ft2 28 ft2 White 0.73 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 No attic Unvented 0 658 ft2 N N

8/5/2010 11:44 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
604 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Unvented) 60 658 ft2 0.07 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 106.67 ft2 0 0.2 0.5

______ 2 S Exterior Frame - Wood 19 16 ft2 0 0.2 0.5

______ 3 W Exterior Frame - Wood 19 99.33 ft2 0 0.2 0.5

______ 4 S Exterior Frame - Wood 19 98 ft2 0 0.2 0.5

______ 5 S Neighbor Frame - Wood 11 113.33 ft2 0.2 0.1

______ 6 E Neighbor Frame - Wood 11 206 ft2 0.2 0.1

______ 7 N Neighbor Frame - Wood 11 24 ft2 0.2 0.1

______ 8 N Neighbor Frame - Wood 11 211.33 ft2 0.2 0.1

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 E Insulated None 0.46 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Vinyl Low-E Double Yes 0.3 0.35 N 60 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 2 W Vinyl Low-E Double Yes 0.3 0.35 N 10 ft2 0 ft 0 in 0 ft 0 in IECC None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Tested Single Point BD 0.00020 350 3.99 19.2 36.1 24 cfm 0 cfm 0 0

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 13 18 kBtu/hr 540 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Electric Heat Pump None HSPF: 8.2 18 kBtu/hr False

8/5/2010 11:44 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 605

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Electric 0.92 40 gal 35 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 189.8 ft Interior 47.45 ft Duct Tester Results Interior 32.00 cfm 5.93 % 0.05 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh OHIO Cleveland 0 0.119

Natural Gas Therm Ohio Average 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:44 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
606 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: B1 3rd 30% TMY City: OH_BURKE_LAKEF

Elec Util: OHIO Cleveland

Cuyahoga, Oh, Gas Util: Ohio Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:45:06

8/5/2010 11:45 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 418 kWh $50

Heating 51 Therms $74

Hot Water 100 Therms $145

Lighting 664 kWh $79

Refrigerator 484 kWh $58

Dryer 662 kWh $79

Range 909 kWh $108

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 152 Therms $219

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

78 kWh $9

34 kWh $4

83.12 Lbs.

22.03 Lbs.

5.79 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(8.1 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water $145

Total Heating $78

Total Cooling 496 kWh $59

Dishwasher 87 kWh $10

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 43 kWh $5

2131 kWh $254

5510 kWh $656

$875
APPENDIX C 607

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

HUD

1

B1 3rd 30%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

658

1

New (Confirmed)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , 

Cuyahoga , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 79 $ 60 0.76

Heating: $ 181 $ 95 0.52

Hot Water: $ 197 $ 164 0.83

Total: $ 457 $ 319 0.70

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, BURKE_LAKEFRON OH_BURKE_LAKEFRON 5 9 84 75 70 6068 33 Medium

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Flat Composition shingles 660 ft2 28 ft2 White 0.73 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 No attic Unvented 0 658 ft2 N N

8/5/2010 11:46 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
608 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Unvented) 60 658 ft2 0.07 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 106.67 ft2 5 0.2 0.5

______ 2 S Exterior Frame - Wood 19 16 ft2 5 0.2 0.5

______ 3 W Exterior Frame - Wood 19 99.33 ft2 5 0.2 0.5

______ 4 S Exterior Frame - Wood 19 98 ft2 5 0.2 0.5

______ 5 S Neighbor Frame - Wood 13 113.33 ft2 5 0.2 0.1

______ 6 E Neighbor Frame - Wood 13 206 ft2 5 0.2 0.1

______ 7 N Neighbor Frame - Wood 13 24 ft2 5 0.2 0.1

______ 8 N Neighbor Frame - Wood 13 211.33 ft2 5 0.2 0.1

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 E Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Vinyl Low-E Double Yes 0.3 0.3 N 60 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 2 W Vinyl Low-E Double Yes 0.3 0.3 N 10 ft2 0 ft 0 in 0 ft 0 in IECC None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Tested Single Point BD 0.00035 600 6.84 32.9 61.9 24 cfm 0 cfm 0 0

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 14 18 kBtu/hr 540 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Furnace None AFUE: 0.94 18 kBtu/hr False

8/5/2010 11:46 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 609

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.7 30 gal 35 gal 120 deg None

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 189.8 ft Interior 47.45 ft Duct Tester Results Interior 32.00 cfm 5.93 % 0.05 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh OHIO Cleveland 0 0.119

Natural Gas Therm Ohio Average 0 1.452

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:46 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
610 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: B1 3rd 50% TMY City: OH_BURKE_LAKEF

Elec Util: OHIO Cleveland

Cuyahoga, Oh, Gas Util: Ohio Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:47:48

8/5/2010 11:48 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 449 kWh $53

Heating 27 Therms $28

Hot Water 41 Therms $42

Lighting 664 kWh $79

Refrigerator 484 kWh $58

Dryer 662 kWh $79

Range 909 kWh $108

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 69 Therms $70

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

86 kWh $10

9 kWh $1

83.33 Lbs.

21.14 Lbs.

5.31 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(7.2 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water $42

Total Heating $29

Total Cooling 535 kWh $63

Dishwasher 87 kWh $10

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 43 kWh $5

2131 kWh $254

5524 kWh $657

$727
APPENDIX C 611

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

HUD

1

B1 3rd 50%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

658

1

New (Confirmed)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , 

Cuyahoga , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 79 $ 62 0.78

Heating: $ 123 $ 54 0.44

Hot Water: $ 139 $ 51 0.37

Total: $ 341 $ 167 0.49

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, BURKE_LAKEFRON OH_BURKE_LAKEFRON 5 9 84 75 70 6068 33 Medium

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Flat Composition shingles 660 ft2 28 ft2 White 0.73 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 No attic Unvented 0 658 ft2 N N

8/5/2010 11:47 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
612 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Unvented) 75 658 ft2 0.07 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 106.67 ft2 0 0.2 0.5

______ 2 S Exterior Frame - Wood 19 16 ft2 0 0.2 0.5

______ 3 W Exterior Frame - Wood 19 99.33 ft2 0 0.2 0.5

______ 4 S Exterior Frame - Wood 19 98 ft2 0 0.2 0.5

______ 5 S Neighbor Frame - Wood 13 113.33 ft2 0.2 0.1

______ 6 E Neighbor Frame - Wood 13 206 ft2 0.2 0.1

______ 7 N Neighbor Frame - Wood 13 24 ft2 0.2 0.1

______ 8 N Neighbor Frame - Wood 13 211.33 ft2 0.2 0.1

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 E Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Vinyl Low-E Double Yes 0.3 0.35 N 60 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 2 W Vinyl Low-E Double Yes 0.3 0.35 N 10 ft2 0 ft 0 in 0 ft 0 in IECC None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Tested Single Point BD 0.00015 260 2.96 14.3 26.8 24 cfm 0 cfm 0 0

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 14 18 kBtu/hr 540 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Hydronic None AFUE: 0.95 18 kBtu/hr False

8/5/2010 11:47 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 613

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.85 30 gal 35 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 189.8 ft Interior 47.45 ft Duct Tester Results Interior 16.00 cfm 2.96 % 0.02 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh OHIO Cleveland 0 0.119

Natural Gas Therm Ohio Average 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:47 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
614 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: B1 3rd 60% TMY City: OH_BURKE_LAKEF

Elec Util: OHIO Cleveland

Cuyahoga, Oh, Gas Util: Ohio Average

Page 1 of 1

Registration #: Run Date: 08/05/2010 11:49:05

8/5/2010 11:49 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 409 kWh $49

Heating 19 Therms $19

Hot Water 29 Therms $30

Lighting 664 kWh $79

Refrigerator 484 kWh $58

Dryer 662 kWh $79

Range 909 kWh $108

Ceiling Fans 0 kWh $0

Miscellaneous

Pool Pump 0 kWh $0

Total (kWh)

Total (Therms) 48 Therms $49

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

Cooling Fan

Heating Fan/Pump

90 kWh $11

6 kWh $1

82.75 Lbs.

20.77 Lbs.

5.16 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(7.1 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water $30

Total Heating $20

Total Cooling 499 kWh $60

Dishwasher 87 kWh $10

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 43 kWh $5

2131 kWh $254

5485 kWh $654

$703
APPENDIX C 615

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

HUD

1

B1 3rd 60%

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

658

1

New (Confirmed)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

Oh , 

Cuyahoga , 

Street Address

Comment:

Building Type: User

Cross Ventilation:

Whole House Fan:

Bathrooms: 1

e-Ratio

Cooling: $ 79 $ 57 0.72

Heating: $ 123 $ 45 0.37

Hot Water: $ 139 $ 36 0.26

Total: $ 341 $ 138 0.40

PASS

Estimated Annual Energy Cost for Code Compliance

Std. Design Home

I E C C Proposed

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Design Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

Zone

Climate

______ OH, BURKE_LAKEFRON OH_BURKE_LAKEFRON 5 9 84 75 70 6068 33 Medium

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Gable

Area Tested

______ 1 Flat Composition shingles 660 ft2 28 ft2 White 0.73 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

______ 1 No attic Unvented 0 658 ft2 N N

8/5/2010 11:49 AM EnergyGauge® / USRCBB v2.8 Page 1 of 3

IECC-2006 Section 404 Compliance
616 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

# Ceiling Type R-Value Area Framing Frac Truss Type

CEILING

______ 1 Under Attic (Unvented) 75 658 ft2 0.07 Wood

WALLS

# Wall Type Cavity Ornt Area Framing Solar Adjacent To R-Value Fraction Absor. SheathingR-Value

______ 1 W Exterior Frame - Wood 19 106.67 ft2 10 0.2 0.5

______ 2 S Exterior Frame - Wood 19 16 ft2 10 0.2 0.5

______ 3 W Exterior Frame - Wood 19 99.33 ft2 10 0.2 0.5

______ 4 S Exterior Frame - Wood 19 98 ft2 10 0.2 0.5

______ 5 S Neighbor Frame - Wood 13 113.33 ft2 0.2 0.1

______ 6 E Neighbor Frame - Wood 13 206 ft2 0.2 0.1

______ 7 N Neighbor Frame - Wood 13 24 ft2 0.2 0.1

______ 8 N Neighbor Frame - Wood 13 211.33 ft2 0.2 0.1

# Door Type Storms U-Value Area

DOORS

Wall ID

______ 1 E Insulated None 0.4 20 ft2 

# Ornt Frame Panes NFRC U-Factor SHGC Storms Area Depth Separation Int Shade Screening

WINDOWS

Window orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Overhang

______ 1 W Vinyl Low-E Double Yes 0.3 0.35 N 60 ft2 0 ft 0 in 0 ft 0 in IECC None

______ 2 W Vinyl Low-E Double Yes 0.3 0.35 N 10 ft2 0 ft 0 in 0 ft 0 in IECC None

Method CFM 50 ACH 50 ELA EqLA Supply CFM Exhaust CFM Fraction

---- Forced Ventilation ---- Run Time

INFILTRATION & VENTING

SLA Watts

Fan

______ Tested Single Point BD 0.00015 260 2.96 14.3 26.8 24 cfm 0 cfm 0 0

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

______ 1 Central Unit None SEER: 16 18 kBtu/hr 540 cfm 0.75 False

HEATING SYSTEM

# System Type Subtype Efficiency Capacity Ductless

______ 1 Natural Gas Hydronic None AFUE: 0.95 18 kBtu/hr False

8/5/2010 11:49 AM EnergyGauge® / USRCBB v2.8 Page 2 of 3

IECC-2006 Section 404 Compliance
APPENDIX C 617

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

______ 1 Natural Gas 0.85 30 gal 35 gal 120 deg Solar System

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

______ 1 Interior 1 189.8 ft Interior 47.45 ft Duct Tester Results Interior 16.00 cfm 2.96 % 0.02 0.60

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh OHIO Cleveland 0 0.119

Natural Gas Therm Ohio Average 0 1.02

Fuel Oil Gallon Ohio Default 0 1.1

Propane Gallon Ohio Default 0 1.4

8/5/2010 11:49 AM EnergyGauge® / USRCBB v2.8 Page 3 of 3

IECC-2006 Section 404 Compliance
618 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD
APPENDIX C 619

APPENDIX C

ENERGY MODELS

5 — Retrofit – climate zone #4

A. Silver Spring, Maryland 

 i. Unit 1
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Required 20% 34% 43% 50%

Unit 1 Before Unit 1 Bronze % Above Reference Unit 1 Silver % Above Reference Unit 1 Gold % Above Reference Unit 1 Emerald % Above Reference 

2.15 1.67 1.2 1.08 0.99

485 485 485 485 485

1 1 1 1 11 1 1 1 10 0 0 0 0

0.306 0.306 0.306 0.306 0.306

n/a n/a n/a n/a n/a

brick/CMU 6" brick/CMU 6" brick/CMU 6" brick/CMU 6" brick/CMU 6"

257.36 257.36 257.36 257.36 257.36

0.55 0.55 0.55 0.55 0.550.60 0.60 0.60 0.60 0.60

59 59 59 59 59

12.06% 12.06% 12.06% 12.06% 12.06%22.73% 22.73% 22.73% 22.73% 22.73%

1.291 0.90 0.90 0.90 0.90

10 10 10 13 16

12 12 12 12 12

0.80 0.8 0.8 0.9 0.96

18 18 18 18 12

/Leakage 88.00% 6% 6% 6% 6%

Inside Inside Inside Inside Inside

Inside Inside Inside Inside Inside

53 53 53 53 53

0.56 0.56 .82 tankless .82 tankless .82 tankless

78 78 78 78 78

68 68 68 68 68

No Yes Yes Yes Yes

s n/a n/a n/a n/a n/a

s n/a n/a n/a n/a n/a

157 133 133 107 85568 362 362 321 304

44 28 28 28 21

399 399 178 178 178

$1,168 $922 21.1% $701 40.0% $634 45.7% $588 49.7%

$9 $9 $9 $9 $9

$227 $227 $227 $227 $227

$381 $381 $381 $381 $381

$59 $59 $59 $59 $59

$115 $115 $115 $115 $115

$1,959 $1,713 $1,492 $1,425 $1,379

window.

ed.

 1980 remodels or older

ENERGY COST and USAGE:
Gaithersburg, MarylandRehab Unit 1

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 157 133 24 15% 133 24 15% 107 50 32% 85 72 46%Heating Cost 612 390 222 36% 390 222 36% 349 263 43% 325 287 47%Hot Water Heating Cost 399 399 0 0% 178 221 55% 178 221 55% 178 221 55%HVAC & hwh Savings N/A 246 467 534 580

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 791 791 791 791 791

HVAC & HWH sub-total 1168 922 21% 701 40% 634 46% 588 50%

Grand Total 1959 1713 87% 1492 76% 1425 73% 1379 70%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Silve

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost
622 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: 8804 Glenville Unit 1 TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/03/2010 08:19:05

3/3/2010 8:24 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 888 kWh $135

Heating 364 Therms $568

Hot Water 256 Therms $399

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 6155 kWh $933

Total (Therms) 658 Therms $1026

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1959

Cooling Fan

Heating Fan/Pump

144 kWh $22

291 kWh $44

67.92 Lbs.

21.99 Lbs.

7.82 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(12 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water $399

Total Heating $612

Total Cooling 1032 kWh $157

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
APPENDIX C 623

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 1 - Existing

1

8804 Glenville Unit 1

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

485

1

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

Wall Perimeter Wall Ins. R-Value Ceiling Ins. R-Value

1 Basement Finished 485 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 487 ft2 20 ft2 Dark 0.96 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 485 ft2 N N

Building Input Summary Report

3/3/2010 8:25 AM EnergyGauge® / USRCBB v2.8
624 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 N Exterior Face Brick - Block 0.01 11 8 4 46.67 ft2 0 0 0.5

2 E Neighbor Face Brick - Block 0.01 41 4 164 ft2 0 0 0.75

3 S Exterior Face Brick - Block 0.01 11 8 4 46.67 ft2 0 0 0.5

4 W Exterior Face Brick - Block 0.01 41 4 164 ft2 0 0 0.5

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 N Wood None 0.46 3 86 20 ft2 

2 W Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 S Vinyl Double (Clear) Yes 0.55 0.6 N 12 ft2 0 ft 0 in 0 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 12 ft2 0 ft 0 in 0 ft 0 in None None

3 W Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 0 ft 0 in 0 ft 0 in None None

4 W Vinyl Double (Clear) Yes 0.55 0.6 N 9 ft2 0 ft 0 in 0 ft 0 in None None

5 W Vinyl Double (Clear) Yes 0.55 0.7 N 18 ft2 0 ft 0 in 0 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00157 4003 219.7 413.3 1.290 41.26 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 10 12 kBtu/hr 550 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.8 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.56 30 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 8:25 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 625

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Interior 6 164 ft2 Interior 41 ft2 (invalid) Default Leakage Interior ( D e f a u l t ) ( D e f a u l t ) 

TEMPERATURES

Programable Thermostat: N Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

Heating (WEH) AM

PM

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

Building Input Summary Report

3/3/2010 8:25 AM EnergyGauge® / USRCBB v2.8
626 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 8:25 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 627

Title: 8804 Glenville Unit 1 with 20% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 13:53:54

3/2/2010 1:54 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 755 kWh $114

Heating 232 Therms $362

Hot Water 256 Therms $399

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 5893 kWh $893

Total (Therms) 526 Therms $820

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1713

Cooling Fan

Heating Fan/Pump

124 kWh $19

182 kWh $28

65.03 Lbs.

20.15 Lbs.

6.88 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(12 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water $399

Total Heating $390

Total Cooling 879 kWh $133

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
628 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 1 - Existing

1

8804 Glenville Unit 1 with 20

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

485

1

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

Wall Perimeter Wall Ins. R-Value Ceiling Ins. R-Value

1 Basement Finished 485 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 487 ft2 20 ft2 Dark 0.96 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 485 ft2 N N

Building Input Summary Report

3/3/2010 7:51 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 629

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 N Exterior Face Brick - Block 0.01 11 8 4 46.67 ft2 0 0 0.5

2 E Neighbor Face Brick - Block 0.01 41 4 164 ft2 0 0 0.75

3 S Exterior Face Brick - Block 0.01 11 8 4 46.67 ft2 0 0 0.5

4 W Exterior Face Brick - Block 0.01 41 4 164 ft2 0 0 0.5

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 N Wood None 0.46 3 86 20 ft2 

2 W Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 S Vinyl Double (Clear) Yes 0.55 0.6 N 12 ft2 0 ft 0 in 0 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 12 ft2 0 ft 0 in 0 ft 0 in None None

3 W Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 0 ft 0 in 0 ft 0 in None None

4 W Vinyl Double (Clear) Yes 0.55 0.6 N 9 ft2 0 ft 0 in 0 ft 0 in None None

5 W Vinyl Double (Clear) Yes 0.55 0.7 N 18 ft2 0 ft 0 in 0 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00110 2793 153.3 288.3 0.900 28.79 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 10 12 kBtu/hr 550 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.8 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.56 30 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 7:51 AM EnergyGauge® / USRCBB v2.8
630 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Interior 6 164 ft2 Interior 41 ft2 (invalid) Prop. Air Leakage Interior 21.60 cfm 6.00 % 0.04 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 7:51 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 631

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 7:51 AM EnergyGauge® / USRCBB v2.8
632 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: 8804 Glenville Unit 1 with 34% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 13:05:23

3/2/2010 1:07 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 755 kWh $114

Heating 232 Therms $362

Hot Water 114 Therms $178

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 5893 kWh $893

Total (Therms) 384 Therms $599

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1492

Cooling Fan

Heating Fan/Pump

124 kWh $19

182 kWh $28

65.03 Lbs.

18.4 Lbs.

6.05 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(12 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water $178

Total Heating $390

Total Cooling 879 kWh $133

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
APPENDIX C 633

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 1 - Existing

1

8804 Glenville Unit 1 with 34

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

485

1

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

Wall Perimeter Wall Ins. R-Value Ceiling Ins. R-Value

1 Basement Finished 485 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 487 ft2 20 ft2 Dark 0.96 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 485 ft2 N N

Building Input Summary Report

3/3/2010 7:53 AM EnergyGauge® / USRCBB v2.8
634 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 N Exterior Face Brick - Block 0.01 11 8 4 46.67 ft2 0 0 0.5

2 E Neighbor Face Brick - Block 0.01 41 4 164 ft2 0 0 0.75

3 S Exterior Face Brick - Block 0.01 11 8 4 46.67 ft2 0 0 0.5

4 W Exterior Face Brick - Block 0.01 41 4 164 ft2 0 0 0.5

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 N Wood None 0.46 3 86 20 ft2 

2 W Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 S Vinyl Double (Clear) Yes 0.55 0.6 N 12 ft2 0 ft 0 in 0 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 12 ft2 0 ft 0 in 0 ft 0 in None None

3 W Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 0 ft 0 in 0 ft 0 in None None

4 W Vinyl Double (Clear) Yes 0.55 0.6 N 9 ft2 0 ft 0 in 0 ft 0 in None None

5 W Vinyl Double (Clear) Yes 0.55 0.7 N 18 ft2 0 ft 0 in 0 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00110 2793 153.3 288.3 0.900 28.79 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 10 12 kBtu/hr 550 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.8 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.82 1 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 7:53 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 635

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Interior 6 164 ft2 Interior 41 ft2 (invalid) Prop. Air Leakage Interior 21.60 cfm 6.00 % 0.04 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 7:53 AM EnergyGauge® / USRCBB v2.8
636 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 7:53 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 637

Title: 8804 Glenville Unit 1 with 43% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/03/2010 08:50:34

3/3/2010 8:51 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 581 kWh $88

Heating 206 Therms $321

Hot Water 114 Therms $178

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 5719 kWh $867

Total (Therms) 359 Therms $558

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1425

Cooling Fan

Heating Fan/Pump

124 kWh $19

182 kWh $28

63.11 Lbs.

17.73 Lbs.

5.79 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(12 kBtu/hr) 

(75 kBtu/hr) 

Total Hot Water $178

Total Heating $349

Total Cooling 705 kWh $107

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
638 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 1 - Existing

1

8804 Glenville Unit 1 with 43

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

485

1

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

Wall Perimeter Wall Ins. R-Value Ceiling Ins. R-Value

1 Basement Finished 485 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 487 ft2 20 ft2 Dark 0.96 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 485 ft2 N N

Building Input Summary Report

3/3/2010 8:52 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 639

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 N Exterior Face Brick - Block 0.01 11 8 4 46.67 ft2 0 0 0.5

2 E Neighbor Face Brick - Block 0.01 41 4 164 ft2 0 0 0.75

3 S Exterior Face Brick - Block 0.01 11 8 4 46.67 ft2 0 0 0.5

4 W Exterior Face Brick - Block 0.01 41 4 164 ft2 0 0 0.5

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 N Wood None 0.46 3 86 20 ft2 

2 W Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 S Vinyl Double (Clear) Yes 0.55 0.6 N 12 ft2 0 ft 0 in 0 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 12 ft2 0 ft 0 in 0 ft 0 in None None

3 W Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 0 ft 0 in 0 ft 0 in None None

4 W Vinyl Double (Clear) Yes 0.55 0.6 N 9 ft2 0 ft 0 in 0 ft 0 in None None

5 W Vinyl Double (Clear) Yes 0.55 0.7 N 18 ft2 0 ft 0 in 0 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00110 2793 153.3 288.3 0.900 28.79 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 13 12 kBtu/hr 550 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.9 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.82 1 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 8:52 AM EnergyGauge® / USRCBB v2.8
640 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Interior 6 164 ft2 Interior 41 ft2 (invalid) Prop. Air Leakage Interior 21.60 cfm 6.00 % 0.04 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 8:52 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 641

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 8:52 AM EnergyGauge® / USRCBB v2.8
642 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: 8804 Glenville Unit 1 with 50% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 13:11:45

3/2/2010 1:12 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 466 kWh $71

Heating 195 Therms $304

Hot Water 114 Therms $178

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 5526 kWh $838

Total (Therms) 347 Therms $541

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1379

Cooling Fan

Heating Fan/Pump

91 kWh $14

137 kWh $21

60.98 Lbs.

17.15 Lbs.

5.6 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(12 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water $178

Total Heating $325

Total Cooling 557 kWh $85

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
APPENDIX C 643

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 1 - Existing

1

8804 Glenville Unit 1 with 50

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

485

1

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

Wall Perimeter Wall Ins. R-Value Ceiling Ins. R-Value

1 Basement Finished 485 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 487 ft2 20 ft2 Dark 0.96 No 0 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 485 ft2 N N

Building Input Summary Report

3/3/2010 7:55 AM EnergyGauge® / USRCBB v2.8
644 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 N Exterior Face Brick - Block 0.01 11 8 4 46.67 ft2 0 0 0.5

2 E Neighbor Face Brick - Block 0.01 41 4 164 ft2 0 0 0.75

3 S Exterior Face Brick - Block 0.01 11 8 4 46.67 ft2 0 0 0.5

4 W Exterior Face Brick - Block 0.01 41 4 164 ft2 0 0 0.5

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 N Wood None 0.46 3 86 20 ft2 

2 W Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 S Vinyl Double (Clear) Yes 0.55 0.6 N 12 ft2 0 ft 0 in 0 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 12 ft2 0 ft 0 in 0 ft 0 in None None

3 W Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 0 ft 0 in 0 ft 0 in None None

4 W Vinyl Double (Clear) Yes 0.55 0.6 N 9 ft2 0 ft 0 in 0 ft 0 in None None

5 W Vinyl Double (Clear) Yes 0.55 0.7 N 18 ft2 0 ft 0 in 0 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00110 2793 153.3 288.3 0.900 28.79 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 16 12 kBtu/hr 550 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.96 12 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.82 1 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 7:55 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 645

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Interior 6 164 ft2 Interior 41 ft2 (invalid) Prop. Air Leakage Interior 21.60 cfm 6.00 % 0.04 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 7:55 AM EnergyGauge® / USRCBB v2.8
646 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 7:55 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 647

APPENDIX C

ENERGY MODELS

 ii. Unit 2
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Required 20% 34% 43% 50%

Unit 2 Before Unit 2 Bronze % Above Reference Unit 2 Silver % Above Reference Unit 2 Gold % Above Reference Unit 2 Emerald % Above Reference 

1.51 1.19 0.93 0.83 0.72

820 820 820 820 820

2 2 2 2 2

1 1 1 1 1

0 0 0 0 0

0.306 0.306 0.306 0.306 0.306

10 10 10 10 10

brick/CMU 6" brick/CMU 6" brick/CMU 6" brick/CMU 6" brick/CMU 6"

648 648 648 648 648

0.55 0.55 0.55 0.55 0.55

0.60 0.6 0.60 0.60 0.60

56 55.5 59 59 59

6.77% 6.77% 6.77% 6.77% 6.77%

8.56% 8.56% 8.56% 8.56% 8.56%

1.06 0.74 0.74 0.74 0.74

13 13 13 15 15

18 18 18 18 18

7.7 7.7 7.7 9.0 9.0

18 18 18 18 18

akage 88.00% 6.0% 6.00% 6.00% 6.0%

Inside Inside Inside Inside Inside

Inside Inside Inside Inside Inside

53 53 53 53 53

0.56 0.60 .82 tankless .82 tankless .82 tankless 32 sf solar

78 78 78 78 78 closed loop 

68 68 68 68 68

No Yes Yes Yes Yes

n/a n/a n/a n/a n/a

n/a n/a n/a n/a n/a

163 144 144 121 121

480 348 348 307 307

77 58 58 46 46

399 348 178 178 103

$1,119 $898 19.7% $728 34.9% $652 41.7% $577 48.4%

9 9 $9 $9 $9

227 227 $227 $227 $227381 381 $381 $381 $381

59 59 $59 $59 $59

115 115 $115 $115 $115

$1,910 $1,689 $1,519 $1,443 $1,368

ency standards for domestic ...... 83, Richmond, 5V40-7, 40 .56, $126. 84, Richmond, 5V50-2, 50 .55, $169 ...

ntial/resdhw.xls

80 remodels or older

ENERGY COST and USAGE:
Gaithersburg, MarylandRehab Unit 2

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 163 144 19 12% 144 19 12% 121 42 26% 121 42 26%Heating Cost 557 406 151 27% 406 151 27% 353 204 37% 353 204 37%Hot Water Heating Cost 399 348 51 13% 178 221 55% 178 221 55% 103 296 74%HVAC & hwh Savings N/A 221 391 467 542

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 791 791 791 791 791

HVAC & HWH sub-total 1119 898 20% 728 35% 652 42% 577 48%

Grand Total 1910 1689 88% 1519 80% 1443 76% 1368 72%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Silve

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost
650 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: 8804 Glenville Unit 2 TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/03/2010 08:30:09

3/3/2010 8:32 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 889 kWh $135

Heating 3168 kWh $480

Hot Water 256 Therms $399

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 9582 kWh $1452

Total (Therms) 294 Therms $458

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1910

Cooling Fan

Heating Fan/Pump

187 kWh $28

506 kWh $77

105.74 Lbs.

27.17 Lbs.

7.91 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water $399

Total Heating 3674 kWh $557

Total Cooling 1076 kWh $163

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
APPENDIX C 651

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 3 - Existing

1

8804 Glenville Unit 2

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

1 Raised Floor 60 820 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

Building Input Summary Report

3/3/2010 8:29 AM EnergyGauge® / USRCBB v2.8
652 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.01 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.01 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in None None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed CFM(50) 0.00130 2792 153.3 288.3 1.064 25.54 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 13 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Electric Heat Pump None AFUE: 7.7 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.56 30 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 8:29 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 653

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Interior 6 164 ft2 Interior 41 ft2 (invalid) Default Leakage Interior ( D e f a u l t ) ( D e f a u l t ) 

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 8:29 AM EnergyGauge® / USRCBB v2.8
654 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 8:29 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 655

Title: 8804 Glenville Unit 2 with 20% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 15:43:10

3/2/2010 3:43 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 787 kWh $119

Heating 2293 kWh $348

Hot Water 223 Therms $348

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 8459 kWh $1282

Total (Therms) 261 Therms $407

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1689

Cooling Fan

Heating Fan/Pump

167 kWh $25

380 kWh $58

93.35 Lbs.

23.98 Lbs.

6.99 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water $348

Total Heating 2673 kWh $406

Total Cooling 954 kWh $144

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
656 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 2 - Existing

1

8804 Glenville Unit 2 with 20

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

1 Raised Floor 60 820 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

Building Input Summary Report

3/3/2010 7:57 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 657

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.01 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.01 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in None None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00090 1941 106.6 200.4 0.740 17.75 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 13 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Electric Heat Pump None AFUE: 7.7 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.6 30 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 7:57 AM EnergyGauge® / USRCBB v2.8
658 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Interior 6 164 ft2 Interior 41 ft2 (invalid) Prop. Air Leakage Interior 32.40 cfm 6.00 % 0.04 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 7:57 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 659

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 7:57 AM EnergyGauge® / USRCBB v2.8
660 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Annual Energy Summary

Title: 8804 Glenville Unit 2 with 34% TMY City: MD_BALTIMORE_BL

User Elec Util: MD 2009

, , Gas Util: MD 2008

Registration #: Run Date: 03/02/2010 15:44:38

Energy

End-Use Consumption Annual Cost

3/2/2010 3:45 PM EnergyGauge® USA - FlaRes2008 / Page 1 of 1

Cooling 787 kWh $119

Heating 2293 kWh $348

Hot Water 114 Therms $178

Ceiling Fans 0 kWh $0

Dryer 0 kWh $0

Lighting 1499 kWh $227

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Range 38 Therms $59

Refrigerator 756 kWh $115

Total (kWh) 8459 kWh $1282

Total (Therms) 152 Therms $237

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost

(18 kBtu/hr) 

Cooling Fan 167 kWh $25

Mechanical Vent Fan

Total Cooling 954 kWh $144

(18 kBtu/hr) 

Heating Fan/Pump 380 kWh $58

Mechanical Vent Fan

Total Heating 2673 kWh $406

Hot Water Pump 0 kWh $0

Total Hot Water $178

Dishwasher 61 kWh $9

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

$1519

Emissions (Calculated as Total - PV Produced)

SO2 93.35 Lbs.

NOX 22.64 Lbs.

CO2 6.36 Tons

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
APPENDIX C 661

Page 1 of 4

PROJECT

Title: 8804 Glenville Unit 2 with 34 Bedrooms: 2 Adress Type:

Lot #

Owner: Conditioned Area: 820 SubDivision:

# of Units: 1 Total Stories: 1 PlatBook:

Builder Name: Unit 2 - Existing Worst Case: No Street:

Permit Office: Rotate Angle: 0 County:

Jurisdiction: City, State, Zip: , 

Family Type: Multi-family , 

New/Existing: Existing (Projected)

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Whole House Fan:

Comment:

Design Design Temp Int Design Temp Heating Design Daily Temp

Location Tmy Site 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm MD 2008 0 1.56

Fuel Oil Gallon Maryland Default 0 1.1

Propane Gallon Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N None 0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

NE None 0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

E None 0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

SE None 0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

S None 0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

SW None 0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

W None 0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

NW None 0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

FLOORS

# Floor Type R-Value Area Tile Wood Carpet

1 Raised Floor 60 820 ft2 0 0.75 0.25

Roof Roof Solar Deck

# Type Materials Area Color Absor. Insul. Pitch

ROOF

Gable

Area Tested

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

Building Input Summary Report

3/3/2010 7:58 AM EnergyGauge® / USRCBB v2.8
662 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.01 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.01 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in None None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00090 1941 106.6 200.4 0.740 17.75 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 13 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Electric Heat Pump None AFUE: 7.7 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.82 1 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 7:58 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 663

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Interior 6 164 ft2 Interior 41 ft2 (invalid) Prop. Air Leakage Interior 32.40 cfm 6.00 % 0.04 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 7:58 AM EnergyGauge® / USRCBB v2.8
664 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 7:58 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 665

Title: 8804 Glenville Unit 2 with 43% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 15:46:09

3/2/2010 3:47 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 673 kWh $102

Heating 2026 kWh $307

Hot Water 114 Therms $178

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 7958 kWh $1206

Total (Therms) 152 Therms $237

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1443

Cooling Fan

Heating Fan/Pump

123 kWh $19

304 kWh $46

87.82 Lbs.

21.4 Lbs.

6.03 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water $178

Total Heating 2330 kWh $353

Total Cooling 796 kWh $121

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
666 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 2 - Existing

1

8804 Glenville Unit 2 with 43

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

1 Raised Floor 60 820 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

Building Input Summary Report

3/3/2010 7:59 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 667

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.01 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.01 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in None None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00090 1941 106.6 200.4 0.740 17.75 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 15 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Electric Heat Pump None AFUE: 9 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.82 1 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 7:59 AM EnergyGauge® / USRCBB v2.8
668 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Interior 6 164 ft2 Interior 41 ft2 (invalid) Prop. Air Leakage Interior 32.40 cfm 6.00 % 0.04 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 7:59 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 669

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 7:59 AM EnergyGauge® / USRCBB v2.8
670 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: 8804 Glenville Unit 2 with 50% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 15:50:29

3/2/2010 3:51 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 673 kWh $102

Heating 2026 kWh $307

Hot Water 66 Therms $103

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 7958 kWh $1206

Total (Therms) 104 Therms $162

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1368

Cooling Fan

Heating Fan/Pump

123 kWh $19

304 kWh $46

87.82 Lbs.

20.81 Lbs.

5.75 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water $103

Total Heating 2330 kWh $353

Total Cooling 796 kWh $121

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
APPENDIX C 671

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 2 - Existing

1

8804 Glenville Unit 2 with 50

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

1 Raised Floor 60 820 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

Building Input Summary Report

3/3/2010 8:01 AM EnergyGauge® / USRCBB v2.8
672 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.01 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.01 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in None None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00090 1941 106.6 200.4 0.740 17.75 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 15 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Electric Heat Pump None AFUE: 9 18 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.82 1 gal 53 gal 120 deg Solar System

Building Input Summary Report

3/3/2010 8:01 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 673

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

Flat Plate (Closed Loop) 4.8 180 3.00 m2 4.17 W/m2 0.75 0.96 303.0 L 0.700 W/m2/C 2.32 m2 0.88 Yes 0 W

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Interior 6 164 ft2 Interior 41 ft2 (invalid) Prop. Air Leakage Interior 32.40 cfm 6.00 % 0.04 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 8:01 AM EnergyGauge® / USRCBB v2.8
674 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 8:01 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 675

APPENDIX C

ENERGY MODELS

 iii. Unit 3
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Required 20% 34% 43% 50%

Unit 3 Before Unit 3 Bronze

Comparison 

to Reference 

House

Unit 3 Silver

Comparison 

to Reference 

House

Unit 3 Gold

Comparison 

to Reference 

House

Unit 3 

Emerald

Comparison 

to Reference 

House

1.64 1.29 1.04 0.90 0.78

820 820 820 820 820

2 2 2 2 2

1 1 1 1 10 0 0 0 0

0.306 0.306 0.306 0.306 0.306

10 10 10 10 10

brick/CMU 6" brick/CMU 6" brick/CMU 6" brick/CMU 6" brick/CMU 6"

648 648 648 648 648

0.55 0.55 0.55 0.55 0.550.60 0.6 0.6 0.6 0.6

56 55.5 55.5 55.5 55.5

6.77% 6.77% 6.77% 6.77% 6.77%

8.56% 8.56% 8.56% 8.56% 8.56%

1.494 1.0458 1.0458 1.0458 1.0458

10 10 13 15 1818 18 18 18 12

0.80 0.80 0.80 0.96 0.96

18 18 18 12 12

y), Leakage 88.00% 6.00% 6.00% 6.00% 6.00%

Inside Inside Inside Inside InsideInside Inside Inside Inside Inside

53 53 53 53 53

0.58 0.62 .82 tankless .82 tankless .82 tankless 32 sf solar

78 78 78 78 78 closed loop

68 68 68 68 68

No Yes Yes Yes Yes

urs n/a 2/6 2/6 2/6 2/6

urs n/a 2/7 2/7 2/7 2/7

214 188 150 127 102

722 523 523 438 438

52 36 36 27 27

373 324 178 178 103

$1,361 $1,071 21.31% $887 34.83% $770 43.42% $670 50.77%

9 9 9 9 9

227 227 227 227 227381 381 381 381 381

59 59 59 59 59

115 115 115 115 115

$2,152 $1,862 $1,678 $1,561 $1,461

n 1980 remodels or older

ENERGY COST and USAGE:
Gaithersburg, MarylandRehab Unit 3

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 214 188 26 12% 150 64 30% 127 87 41% 102 112 52%Heating Cost 774 559 215 28% 559 215 28% 465 309 40% 465 309 40%Hot Water Heating Cost 373 324 49 13% 178 195 52% 178 195 52% 103 270 72%HVAC & hwh Savings N/A 290 474 591 691

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 791 791 791 791 791

HVAC & HWH sub-total 1361 1071 21% 887 35% 770 43% 670 51%

Grand Total 2152 1862 87% 1678 78% 1561 73% 1461 68%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Silve

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost
678 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: 8804 Glenville Unit 3 TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/03/2010 08:45:17

3/3/2010 8:46 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1217 kWh $184

Heating 463 Therms $722

Hot Water 239 Therms $373

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 6587 kWh $998

Total (Therms) 741 Therms $1154

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $2152

Cooling Fan

Heating Fan/Pump

197 kWh $30

341 kWh $52

72.69 Lbs.

23.76 Lbs.

8.58 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(18 kBtu/hr) 

Total Hot Water $373

Total Heating $774

Total Cooling 1414 kWh $214

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
APPENDIX C 679

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 3 - Existing

1

8804 Glenville Unit 3

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

1 Raised Floor 60 820 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

Building Input Summary Report

3/3/2010 8:46 AM EnergyGauge® / USRCBB v2.8
680 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 2 of 4

# Ceiling Type R-Value Area Framing Fraction Truss Type

CEILING

1 Under Attic (Unvented) 60 820 ft2 0.11 Wood

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.5 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.5 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.5 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.5 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in None None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed CFM(50) 0.00182 3919 215.1 404.6 1.494 35.84 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 10 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.8 75 kBtu/hr False

Building Input Summary Report

3/3/2010 8:46 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 681

Page 3 of 4

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.58 30 gal 53 gal 120 deg None

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Attic 6 164 ft2 Attic 41 ft2 (invalid) Default Leakage Interior ( D e f a u l t ) ( D e f a u l t ) 

TEMPERATURES

Programable Thermostat: N Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

Heating (WEH) AM

PM

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

Building Input Summary Report

3/3/2010 8:46 AM EnergyGauge® / USRCBB v2.8
682 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 8:46 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 683

Title: 8804 Glenville Unit 3 with 20% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 14:01:29

3/2/2010 2:02 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1066 kWh $162

Heating 335 Therms $523

Hot Water 208 Therms $324

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 6307 kWh $956

Total (Therms) 581 Therms $906

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1862

Cooling Fan

Heating Fan/Pump

174 kWh $26

235 kWh $36

69.6 Lbs.

21.51 Lbs.

7.46 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(75 kBtu/hr) 

Total Hot Water $324

Total Heating $559

Total Cooling 1240 kWh $188

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
684 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 3 - Existing

1

8804 Glenville Unit 3 with 20

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

1 Raised Floor 60 820 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

Building Input Summary Report

3/3/2010 8:04 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 685

Page 2 of 4

# Ceiling Type R-Value Area Framing Fraction Truss Type

CEILING

1 Under Attic (Unvented) 60 820 ft2 0.11 Wood

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.5 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.5 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.5 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.5 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in None None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00128 2743 150.6 283.2 1.046 25.09 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 10 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.8 75 kBtu/hr False

Building Input Summary Report

3/3/2010 8:04 AM EnergyGauge® / USRCBB v2.8
686 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 3 of 4

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.62 30 gal 53 gal 120 deg None

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Attic 6 164 ft2 Attic 41 ft2 (invalid) Prop. Air Leakage Interior 90.00 cfm 6.00 % 0.11 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 8:04 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 687

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 8:04 AM EnergyGauge® / USRCBB v2.8
688 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: 8804 Glenville Unit 3 with 34% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 14:04:02

3/2/2010 2:04 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 820 kWh $124

Heating 335 Therms $523

Hot Water 114 Therms $178

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 6061 kWh $918

Total (Therms) 487 Therms $760

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1678

Cooling Fan

Heating Fan/Pump

174 kWh $26

235 kWh $36

66.88 Lbs.

19.75 Lbs.

6.76 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(75 kBtu/hr) 

Total Hot Water $178

Total Heating $559

Total Cooling 994 kWh $150

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
APPENDIX C 689

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 3 - Existing

1

8804 Glenville Unit 3 with 34

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

1 Raised Floor 60 820 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

Building Input Summary Report

3/3/2010 8:05 AM EnergyGauge® / USRCBB v2.8
690 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 2 of 4

# Ceiling Type R-Value Area Framing Fraction Truss Type

CEILING

1 Under Attic (Unvented) 60 820 ft2 0.11 Wood

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.5 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.5 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.5 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.5 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in None None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00128 2743 150.6 283.2 1.046 25.09 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 13 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.8 75 kBtu/hr False

Building Input Summary Report

3/3/2010 8:05 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 691

Page 3 of 4

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.82 1 gal 53 gal 120 deg None

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Attic 6 164 ft2 Attic 41 ft2 (invalid) Prop. Air Leakage Interior 90.00 cfm 6.00 % 0.11 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 8:05 AM EnergyGauge® / USRCBB v2.8
692 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 8:05 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 693

Title: 8804 Glenville Unit 3 with 43% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 14:11:54

3/2/2010 2:12 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 703 kWh $107

Heating 281 Therms $438

Hot Water 114 Therms $178

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 5840 kWh $886

Total (Therms) 433 Therms $675

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1561

Cooling Fan

Heating Fan/Pump

129 kWh $20

176 kWh $27

64.45 Lbs.

18.71 Lbs.

6.3 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(75 kBtu/hr) 

Total Hot Water $178

Total Heating $465

Total Cooling 832 kWh $127

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
694 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 3 - Existing

1

8804 Glenville Unit 3 with 43

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

1 Raised Floor 60 820 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

Building Input Summary Report

3/3/2010 8:06 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 695

Page 2 of 4

# Ceiling Type R-Value Area Framing Fraction Truss Type

CEILING

1 Under Attic (Unvented) 60 820 ft2 0.11 Wood

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.5 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.5 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.5 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.5 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in None None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00128 2743 150.6 283.2 1.046 25.09 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 15 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.96 75 kBtu/hr False

Building Input Summary Report

3/3/2010 8:06 AM EnergyGauge® / USRCBB v2.8
696 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 3 of 4

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.82 1 gal 53 gal 120 deg None

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Attic 6 164 ft2 Attic 41 ft2 (invalid) Prop. Air Leakage Interior 90.00 cfm 6.00 % 0.11 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 8:06 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 697

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 8:06 AM EnergyGauge® / USRCBB v2.8
698 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: 8804 Glenville Unit 3 with 50% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 16:09:02

3/2/2010 4:09 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 545 kWh $83

Heating 281 Therms $438

Hot Water 66 Therms $103

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 5678 kWh $861

Total (Therms) 385 Therms $600

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1461

Cooling Fan

Heating Fan/Pump

125 kWh $19

176 kWh $27

62.66 Lbs.

17.72 Lbs.

5.92 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(12 kBtu/hr) 

(75 kBtu/hr) 

Total Hot Water $103

Total Heating $465

Total Cooling 670 kWh $102

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
APPENDIX C 699

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 3 - Existing

1

8804 Glenville Unit 3 with 50

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Floor Type Area Tile Wood Carpet

FLOORS

R-Value

1 Raised Floor 60 820 ft2 0 0.75 0.25

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

Building Input Summary Report

3/3/2010 8:07 AM EnergyGauge® / USRCBB v2.8
700 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 2 of 4

# Ceiling Type R-Value Area Framing Fraction Truss Type

CEILING

1 Under Attic (Unvented) 60 820 ft2 0.11 Wood

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.5 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.5 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.5 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.5 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in None None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in None None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00128 2743 150.6 283.2 1.046 25.09 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 18 12 kBtu/hr 360 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.96 75 kBtu/hr False

Building Input Summary Report

3/3/2010 8:07 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 701

Page 3 of 4

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.82 1 gal 53 gal 120 deg Solar System

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

Flat Plate (Closed Loop) 4.8 180 3.00 m2 4.17 W/m2 0.75 0.96 303.0 L 0.700 W/m2/C 2.32 m2 0.88 Yes 0 W

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Attic 6 164 ft2 Attic 41 ft2 (invalid) Prop. Air Leakage Interior 90.00 cfm 6.00 % 0.11 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 8:07 AM EnergyGauge® / USRCBB v2.8
702 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 8:07 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 703

APPENDIX C

ENERGY MODELS

 iv. Unit 4
ORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Required 20% 34% 43% 50%

Unit 4 Before Unit 4 Bronze

Comparison 

to Reference 

House

Unit 4 Silver

Comparison 

to Reference 

House

Unit 4 Gold1

Comparison 

to Reference 

House

Unit 4 

Emerald

Comparison to 

Reference 

House

1.95 1.55 1.23 1.07 0.93

820 820 820 820 820

2 2 2 2 2

1 1 1 1 1

0 0 0 0 0

0.306 0.306 0.306 0.306 0.306

10 10 10 10 10

brick/CMU 6" brick/CMU 6" brick/CMU 6" brick/CMU 6" brick/CMU 6"

648 648 648 648 648

0.55 0.55 0.55 0.55 0.55

0.60 0.6 0.6 0.6 0.6

56 55.5 55.5 55.5 55.5

6.77% 6.77% 6.77% 6.77% 6.77%

8.56% 8.56% 8.56% 8.56% 8.56%

1.320 0.924 0.924 0.924 0.92

10 10 13 15 16

18 18 18 18 18

0.78 0.78 0.78 0.92 0.96

75 75 75 75 75

y), Leakage 88.00% 6.00% 6.00% 6.00% 6.00%

Inside Inside Inside Inside InsideInside Inside Inside Inside Inside

53 53 53 53 53

0.54 0.60 .82 tankless .82 tankless .82 tankless 32 sf solar dhw

78 78 78 78 78 closed loop

68 68 68 68 68

No Yes Yes Yes Yes

rs n/a 2/6 2/6 2/6 2/6

urs n/a 2/7 2/7 2/7 2/7

305 269 216 181 171

741 544 544 465 446

52 37 37 28 28

399 348 178 178 103

$1,497 $1,198 19.97% $975 34.87% $852 43.09% $748 50.03%

9 9999

227 227 227 227 227

381 381 381 381 381

59 59 59 59 59

115 115 115 115 115

$2,288 $1,989 $1,766 $1,643 $1,539

r, 14 SEER required at Emerald level.

n 1980 remodels or older

ENERGY COST and USAGE:
Gaithersburg, MarylandRehab Unit 4

Base

Annual Energy Summary Yr $ Yr $ savings percent Yr $ savings percent Yr $ savings percent Yr $ savings percent

Cooling Cost 305 269 36 12% 216 89 29% 181 124 41% 171 134 44%Heating Cost 793 581 212 27% 581 212 27% 493 300 38% 474 319 40%Hot Water Heating Cost 399 348 51 13% 178 221 55% 178 221 55% 103 296 74%HVAC & hwh Savings N/A 299 522 645 749

Appliances/MELs Savings N/A 0 0 0 0

Appliances/MELs Cost 791 791 791 791 791

HVAC & HWH sub-total 1497 1198 20% 975 35% 852 43% 748 50%

Grand Total 2288 1989 87% 1766 77% 1643 72% 1539 67%

Data based on Energy Gauge - Annual Energy Summary. Not Compliance

Bronze Silver Gold Emerald

Base Cost

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Silve

Gold

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELs Cost

Emerald

Cooling CostHeating CostHot Water HeatingCostHVAC & hwhSavingsAppliances/MELsSavingsAppliances/MELsCost

Bronze

Cooling CostHeating CostHot Water HeatingCostHVAC & hwh SavingsAppliances/MELsSavingsAppliances/MELsCost
706 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: 8804 Glenville Unit 4 TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/03/2010 08:48:23

3/3/2010 8:48 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1720 kWh $261

Heating 475 Therms $741

Hot Water 256 Therms $399

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 7183 kWh $1089

Total (Therms) 770 Therms $1199

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $2288

Cooling Fan

Heating Fan/Pump

287 kWh $44

344 kWh $52

79.27 Lbs.

25.56 Lbs.

9.13 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(75 kBtu/hr) 

Total Hot Water $399

Total Heating $793

Total Cooling 2007 kWh $305

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
APPENDIX C 707

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 4 - Existing

1

8804 Glenville Unit 4

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

# Ceiling Type R-Value Area Framing Fraction Truss Type

CEILING

1 Under Attic (Unvented) 0.5 820 ft2 0.11 Wood

Building Input Summary Report

3/3/2010 7:40 AM EnergyGauge® / USRCBB v2.8
708 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.01 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.01 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in Drapes/blinds None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in Drapes/blinds None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed CFM(50) 0.00161 3466 190.3 357.8 1.321 31.70 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 10 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.78 75 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.56 30 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 7:40 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 709

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Attic 6 164 ft2 Attic 41 ft2 (invalid) Default Leakage Interior ( D e f a u l t ) ( D e f a u l t ) 

TEMPERATURES

Programable Thermostat: N Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

Heating (WEH) AM

PM

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

Building Input Summary Report

3/3/2010 7:40 AM EnergyGauge® / USRCBB v2.8
710 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.047 0.047 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 7:40 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 711

Title: 8804 Glenville Unit 4 with 20% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 16:12:40

3/2/2010 4:13 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1516 kWh $230

Heating 349 Therms $544

Hot Water 223 Therms $348

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 6848 kWh $1038

Total (Therms) 610 Therms $951

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1989

Cooling Fan

Heating Fan/Pump

256 kWh $39

244 kWh $37

75.57 Lbs.

23.16 Lbs.

7.98 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(75 kBtu/hr) 

Total Hot Water $348

Total Heating $581

Total Cooling 1772 kWh $269

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
712 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 4 - Existing

1

8804 Glenville Unit 4 with 20

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

# Ceiling Type R-Value Area Framing Fraction Truss Type

CEILING

1 Under Attic (Unvented) 0.5 820 ft2 0.11 Wood

Building Input Summary Report

3/3/2010 7:42 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 713

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.01 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.01 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in Drapes/blinds None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in Drapes/blinds None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00113 2424 133.1 250.2 0.924 22.17 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 10 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.78 75 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.6 30 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 7:42 AM EnergyGauge® / USRCBB v2.8
714 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Attic 6 164 ft2 Attic 41 ft2 (invalid) Prop. Air Leakage Interior 90.00 cfm 6.00 % 0.11 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 7:42 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 715

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 7:42 AM EnergyGauge® / USRCBB v2.8
716 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: 8804 Glenville Unit 4 with 34% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 16:15:08

3/2/2010 4:15 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1166 kWh $177

Heating 349 Therms $544

Hot Water 114 Therms $178

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 6498 kWh $985

Total (Therms) 501 Therms $781

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1766

Cooling Fan

Heating Fan/Pump

256 kWh $39

244 kWh $37

71.71 Lbs.

20.96 Lbs.

7.12 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(75 kBtu/hr) 

Total Hot Water $178

Total Heating $581

Total Cooling 1422 kWh $216

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
APPENDIX C 717

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 4 - Existing

1

8804 Glenville Unit 4 with 34

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

# Ceiling Type R-Value Area Framing Fraction Truss Type

CEILING

1 Under Attic (Unvented) 0.5 820 ft2 0.11 Wood

Building Input Summary Report

3/3/2010 7:43 AM EnergyGauge® / USRCBB v2.8
718 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.01 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.01 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in Drapes/blinds None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in Drapes/blinds None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00113 2424 133.1 250.2 0.924 22.17 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 13 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.78 75 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.82 1 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 7:43 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 719

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Attic 6 164 ft2 Attic 41 ft2 (invalid) Prop. Air Leakage Interior 90.00 cfm 6.00 % 0.11 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 7:43 AM EnergyGauge® / USRCBB v2.8
720 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 7:43 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 721

Title: 8804 Glenville Unit 4 with 43% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/03/2010 07:45:36

3/3/2010 7:45 AM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 1000 kWh $152

Heating 298 Therms $465

Hot Water 114 Therms $178

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 6205 kWh $941

Total (Therms) 450 Therms $702

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1643

Cooling Fan

Heating Fan/Pump

190 kWh $29

183 kWh $28

68.47 Lbs.

19.77 Lbs.

6.64 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(75 kBtu/hr) 

Total Hot Water $178

Total Heating $493

Total Cooling 1190 kWh $181

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
722 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 4 - Existing

1

8804 Glenville Unit 4 with 43

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

# Ceiling Type R-Value Area Framing Fraction Truss Type

CEILING

1 Under Attic (Unvented) 0.5 820 ft2 0.11 Wood

Building Input Summary Report

3/3/2010 7:46 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 723

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.01 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.01 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in Drapes/blinds None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in Drapes/blinds None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00113 2424 133.1 250.2 0.924 22.17 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 15 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.92 75 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.82 1 gal 53 gal 120 deg None

Building Input Summary Report

3/3/2010 7:46 AM EnergyGauge® / USRCBB v2.8
724 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Attic 6 164 ft2 Attic 41 ft2 (invalid) Prop. Air Leakage Interior 90.00 cfm 6.00 % 0.11 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 7:46 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 725

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 7:46 AM EnergyGauge® / USRCBB v2.8
726 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Title: 8804 Glenville Unit 4 with 50% TMY City: MD_BALTIMORE_BL

Elec Util: MD 2009

, , Gas Util: MD 2008

Page 1 of 1

Registration #: Run Date: 03/02/2010 16:22:27

3/2/2010 4:24 PM EnergyGauge® USA - FlaRes2008 / 

User

Annual Energy Summary

End-Use Consumption

Energy

Annual Cost

Cooling 938 kWh $142

Heating 286 Therms $446

Hot Water 66 Therms $103

Lighting 1499 kWh $227

Refrigerator 756 kWh $115

Dryer 0 kWh $0

Range 38 Therms $59

Ceiling Fans 0 kWh $0

Miscellaneous 2516 kWh $381

Pool Pump 0 kWh $0

Total (kWh) 6143 kWh $931

Total (Therms) 390 Therms $608

Total (Oil Gallons) 0 Gallons $0

Total (Propane Gallons) 0 Gallons $0

Total Cost $1539

Cooling Fan

Heating Fan/Pump

190 kWh $29

183 kWh $28

67.79 Lbs.

18.91 Lbs.

6.24 Tons

PV Produced (kWh)* 0 kWh $0

* Assumes net metering

Hot Water Pump 0 kWh $0

(18 kBtu/hr) 

(75 kBtu/hr) 

Total Hot Water $103

Total Heating $474

Total Cooling 1128 kWh $171

Dishwasher 61 kWh $9

Mechanical Vent Fan

Mechanical Vent Fan

Emissions (Calculated as Total - PV Produced)

SO2

NOX

CO2

0 kWh $ 0

0 kWh $ 0

Clothes Washer 0 kWh $0
APPENDIX C 727

Page 1 of 4

PROJECT

Title:

Owner:

# of Units:

Builder Name:

Permit Office:

Jurisdiction:

Unit 4 - Existing

1

8804 Glenville Unit 4 with 50

Family Type:

New/Existing:

Bedrooms:

Conditioned Area:

Total Stories:

Worst Case:

Rotate Angle: 0

No

1

820

2

Existing (Projected)

Multi-family

Adress Type:

Lot #

SubDivision:

PlatBook:

Street:

County:

City, State, Zip:

, 

, 

Street Address

Building Type: User Bathrooms: 1

Cross Ventilation:

Comment:

Whole House Fan:

Design

Tmy Site

Design Temp Int Design Temp Heating Design Daily Temp

Location 97.5 % 2.5 % Winter Summer Degree Days Moisture Range

CLIMATE

MD, BALTIMORE_BLT-WA MD_BALTIMORE_BLT-WASHNGT 13 91 70 75 4631 37 Medium

UTILITY RATES

Fuel Unit Utility Name Monthly Fixed Cost $/Unit

Electricity kWh MD 2009 0 0.1516

Natural Gas Therm

Fuel Oil Gallon

Propane Gallon

MD 2008 0 1.56

Maryland Default 0 1.1

Maryland Default 0 1.4

SURROUNDINGS

Shade Trees Adjacent Buildings

Ornt Type Height Width Distance Exist Height Width Distance

N

NE

E

SE

S

SW

W

NW

None

None

None

None

None

None

None

None

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft X 35 ft 40 ft 30 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 0 ft 0 ft 0 ft 0 ft 0 ft 

0 ft 

# Type Materials Area Color Absor.

Roof Roof Solar Deck

Insul. Pitch

ROOF

Tested

Gable

Area

1 Flat Gravel 823 ft2 34 ft2 Dark 0.96 No 10 4.8 deg 

ATTIC

# Type Ventilation Vent Ratio (1 in) Area RBS IRCC

1 No attic Unvented 0 820 ft2 N N

# Ceiling Type R-Value Area Framing Fraction Truss Type

CEILING

1 Under Attic (Unvented) 0.5 820 ft2 0.11 Wood

Building Input Summary Report

3/3/2010 7:48 AM EnergyGauge® / USRCBB v2.8
728 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 2 of 4

WALLS

# Wall Type R-Value Area Adjacent Framing Solar Ornt

Wall orientation below is as entered. Actual orientation is modified by rotate angle shown in "Project" section above.

Fraction Absor.

Width Height To Ft In Ft In Cavity Sheathing

R-Value

1 E Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

2 S Neighbor Face Brick - Block 0.01 41 8 328 ft2 0 0 0.1

3 W Exterior Face Brick - Block 0.01 20 8 160 ft2 0 0 0.75

4 N Exterior Face Brick - Block 0.01 41 8 328 ft2 0 0 0.75

# Door Type Storms U-Value Area

DOORS

Ornt

Width

 Ft In Ft In

Height

1 E Insulated None 0.46 3 86 20 ft2 

# Frame Panes NFRC U-Factor SHGC Storm Area Depth Separation Interior Shade

WINDOWS

Ornt

Overhang

Screening

1 E Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

2 W Vinyl Double (Clear) Yes 0.55 0.6 N 24 ft2 1 ft 6 in 1 ft 0 in None None

3 N Vinyl Double (Clear) Yes 0.55 0.6 N 36 ft2 1 ft 6 in 1 ft 0 in Drapes/blinds None

4 N Vinyl Double (Clear) Yes 0.55 0.6 N 4.5 ft2 1 ft 6 in 1 ft 0 in Drapes/blinds None

Method SLA CFM 50 ELA ACH 50 Supply Exhaust Run Time Shielding

---- Forced Ventilation ---- Terrain/Wind

INFILTRATION & VENTING

EqLA ACH

Proposed ACH 0.00113 2424 133.1 250.2 0.924 22.17 0 0 0 Suburban / Suburban

MASS

Mass Type Area Thickness Furniture Fraction

No Added Mass 0 ft2 0 ft 0.3

# System Type Efficiency Capacity Air Flow SHR

COOLING SYSTEM

Subtype Ductless

1 Central Unit None SEER: 16 18 kBtu/hr 540 cfm 0.75 False

# System Type Efficiency Capacity

HEATING SYSTEM

Subtype Ductless

1 Natural Gas Furnace None AFUE: 0.96 75 kBtu/hr False

# System Type EF Cap Use SetPnt Credits

HOT WATER SYSTEM

1 Natural Gas 0.82 1 gal 53 gal 120 deg Solar System

Building Input Summary Report

3/3/2010 7:48 AM EnergyGauge® / USRCBB v2.8
APPENDIX C 729

Page 3 of 4

SOLAR HOT WATER

Collector Type

Collector

Tilt Azimuth Area Loss Coef. Prod.

Surface Absorp. Trans

Corr.

Tank

Volume

Tank

U-Value

Tank

Surf Area

Heat

Exch Eff

PV

Pumped

Pump

Energy

Flat Plate (Closed Loop) 4.8 180 3.00 m2 4.17 W/m2 0.75 0.96 303.0 L 0.700 W/m2/C 2.32 m2 0.88 Yes 0 W

# Location R-Value Area Location Area

---- Supply ---- ---- Return ----

Leakage Type Handler CFM 25

Air

Leakage

Percent

QN RLF

DUCTS

Number

1 Attic 6 164 ft2 Attic 41 ft2 (invalid) Prop. Air Leakage Interior 90.00 cfm 6.00 % 0.11 0.60

TEMPERATURES

Programable Thermostat: Y Ceiling Fans: N

Cooling [X] Jan [X] Feb [X] Mar [X] Apr [X] May [X] Jul [X] Aug [X] Sep [X] Oct [X] Nov [X] Dec

[X] Dec [X] Nov [X] Dec [X] Nov [X] Oct[X] Oct [X] Sep[X] Sep [X] Aug[X] Aug [X] Jul [X] Jun [X] Jul [X] Jun

[X] Jun [X] May

[X] May [X] Apr[X] Apr [X] Mar[X] Mar [X] Feb[X] Feb [X] Jan[X] Jan Heating

Venting

Thermostat Schedule: HERS 2006 Reference Hours

Schedule Type 1 2 3 4 5 6 7 8 9 10 11 12

Cooling (WD) AM

PM

78

80

78

80

78

78

78

78

78

78

78

78

78

78

78

78

80

78

80

78

80

78

80

78

Cooling (WEH) AM

PM

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

78

Heating (WD) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Heating (WEH) AM

PM

66

68

66

68

66

68

66

68

66

68

68

68

68

68

68

68

68

68

68

68

68

66

68

66

Building Input Summary Report

3/3/2010 7:48 AM EnergyGauge® / USRCBB v2.8
730 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

Page 4 of 4

Schedule Type 123456

Hours

7 8 9 10 11 12

APPLIANCES & LIGHTING

Appliance Schedule: Glenville2

Ceiling Fans (Summer) AM 1 1 1 1 1 1 1 0.883 0.409 0.242 0.242 0.242

PM 0.242 0.242 0.242 0.242 0.295 0.553 0.897 0.897 0.897 1 1 1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Clothes Washer AM 0.105 0.081 0.046 0.046 0.081 0.128 0.256 0.57 0.849 1 0.977 0.872

PM 0.779 0.698 0.605 0.57 0.581 0.57 0.57 0.57 0.57 0.488 0.43 0.198

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Dishwasher AM 0.139 0.05 0.028 0.024 0.029 0.09 0.169 0.303 0.541 0.594 0.502 0.443

PM 0.377 0.396 0.335 0.323 0.344 0.448 0.791 1 0.8 0.597 0.383 0.281

Peak Value: 19 Watts

% Released: 0

Annual Use: 61 kWh/Yr

Dryer AM 0.122 0.073 0.049 0.024 0.049 0.073 0.195 0.39 0.595 0.839 0.961 1

PM 0.912 0.829 0.746 0.707 0.683 0.668 0.634 0.624 0.644 0.668 0.537 0.293

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Lighting AM 0.063 0.063 0.063 0.063 0.188 0.391 0.438 0.391 0.172 0.117 0.117 0.117

PM 0.117 0.117 0.117 0.203 0.438 0.609 0.82 0.984 1 0.688 0.383 0.156

Peak Value: 525 Watts

% Released: 100

Annual Use: 1498 kWh/Yr

Miscellaneous AM 0.454 0.411 0.393 0.38 0.38 0.429 0.54 0.65 0.663 0.675 0.687 0.699

PM 0.687 0.663 0.65 0.681 0.804 1 1 0.926 0.89 0.847 0.712 0.577

Peak Value: 436 Watts

% Released: 100

Annual Use: 2516 kWh/Yr

Pool Pump AM 0 0 0 0 0 0 0 0 0 1 1 1

PM 1 1 1 1 0 0 0 0 0 0 0 0

Peak Value: 0 Watts

% Released: 0

Annual Use: 0 kWh/Yr

Range AM 0.047 0.047 0.024 0.024 0.047 0.071 0.165 0.283 0.307 0.321 0.283 0.33

PM 0.337 0.307 0.292 0.377 0.613 1 0.778 0.401 0.236 0.165 0.104 0.071

Peak Value: 2 kBTU/Hr

% Released: 0

Annual Use: 38 Therms/Yr

Refrigeration AM 0.57 0.49 0.49 0.46 0.46 0.57 0.76 0.89 0.89 0.82 0.71 0.71

PM 0.64 0.58 0.58 0.58 0.73 0.59 1 1 0.96 0.96 0.86 0.71

Peak Value: 122 Watts

% Released: 0

Annual Use: 756 kWh/Yr

Well Pump AM 0.05 0.05 0.05 0.05 0.05 0.05 0.1 0.1 0.1 0.1 0.1 0.1

PM 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Peak Value: 0 Watts

% Released: 100

Annual Use: 0 kWh/Yr

Building Input Summary Report

3/3/2010 7:48 AM EnergyGauge® / USRCBB v2.8
731

Endnotes

1 — American Institute of Architects (AIA) Cincinnati, Comparison of LEED for Homes and 

the National Green Building Standard (January 2010), 11. http://www.aiacincinnati.org/

community/LEED_NAHB_Final.pdf. .............................................................................................xvi

2 — The Green Remodel Path applies to buildings constructed before 1980, ICC 700-2008, 

page 14. ..................................................................................................................................................xvi

3 — In 2009, the American National Standards Institute approved the NGBS, which was 

codeveloped by the National Association of Home Builders and the International Code 

Council. The consensus committee for the NGBS included 42 members representing 

building code officials, architects, construction professionals, regulatory entities, 

federal agencies, environmental organizations, and product manufacturers. Thirteen 

of the members represented local, state, or federal government agencies, including the 

U.S. Department of Energy and U.S. Environmental Protection Agency. Five members 

represented other green building organizations, including the U.S. Green Building 

Council (the developers of the Leadership in Energy & Environmental Design [LEED] 

green building rating system). Three members were home builders. ....................................... xxi

4 — http://www.whitehouse.gov/omb/circulars_a119/ ...................................................................... xxi

5 — EPA. http://www.epa.gov/greenbuilding/pubs/about.htm. October 2010. .................................1

6 — EPA. http://www.epa.gov/greenbuilding/pubs/whybuild.htm. October 2010. ..........................1

7 — Greening a New Home. http://www.toolbase.org/Field-Evaluations/lancaster-countycareer. January 2008. .............................................................................................................................. 1

8 — NAHB Green. http://www.nahbgreen.org/About/default.aspx. November 2009. .....................3

9 — Economic Database in Support of ASHRAE 90.2 (Energy-Efficient Design of Low-Rise 

Residential Buildings), 1481 RP. ............................................................................................................5

10 — R.S. Means Company, Inc. Kingston, MA. Residential Construction Data, 2009. Site Work 

and Landscape Data, 2009. ........................................................................................................................5

11 — Bureau of Labor Statistics 2008. 

http://www.bls.gov/oes/2008/may/oes_nat.htm#b00-0000 ...........................................................5

12 — The baseline rating is defined as the NGBS rating of the original design. All incremental 

green improvements (that is, Bronze, Silver, Gold, and Emerald) are developed from the 

original design, not from the previous green rating. ........................................................................7

13 — Mandatory requirements are defined in detailed within Appendix B and within the case 

study section (section 3) of this report. ..............................................................................................10

14 — 2006 International Energy Conservation Code (IECC), Section 404, page 22. ............................11

15 — Energy Gauge/USRCBBv2.8 software is used for energy modeling in this study. ...................11

ENDNOTES
732 AN EVALUATION OF AFFORDABLE HOUSING USING THE NATIONAL GREEN BUILDING STANDARD

16 — http://www.energystar.gov/. ...............................................................................................................12

17 — Department of Energy, Proposed Climate Zone FAQs, http://www.energycodes.gov/

implement/climatezones_04_faq.stm. ...............................................................................................18

18 — CDH is the cooling degree hours based on 74 °F as defined by REM/RateTM software...........18

19 — HDD is the heating degree days based on 65 °F as defined by REM/RateTM software. ...........18

20 — This one-time cost to the builder is based on an estimated 3 weeks of labor at the 

administrative rate of $47/hr. ..............................................................................................................21

21 — This one-time cost to the builder is based on an estimated 3 weeks of labor at the 

administrative rate of $47/hr. ..............................................................................................................31

22 — This one-time cost to the builder is based on an estimated 3 weeks of labor at the 

administrative rate of $47/hr. ..............................................................................................................42

23 — This one-time cost to the builder is based on an estimated 3 weeks of labor at the 

administrative rate of $47/hr. ..............................................................................................................54

24 — This one-time cost to the builder is based on an estimated 3 weeks of labor at the 

administrative rate of $47/hr. ..............................................................................................................64

25 — This one-time cost to the builder is based on an estimated 3 weeks of labor at the 

administrative rate of $47/hr. ..............................................................................................................75

26 — This one-time cost to the builder is based on an estimated 3 weeks of labor at the 

administrative rate of $47/hr. ..............................................................................................................86

27 — This one-time cost to the builder is based on an estimated 3 weeks of labor at the 

administrative rate of $47/hr. ..............................................................................................................97

28 — The Green Remodel Path applies to buildings constructed before 

1980 (ICC 700-2008, page 14). .............................................................................................................106

29 — We base the simple payback periods for energy and water efficiency on the current cost 

estimates and projected savings and do not consider future rate increases, inflation, 

replacement costs, or other conditions over the 30-year evaluation period. .............................129

30 — The Green Remodel Path applies to buildings constructed before 

1980 (ICC 700-2008, page 14). .............................................................................................................130

31 — 2006 International Energy Conservation Code (IECC), Section 404, page 22. ..........................131

32 — MEL = miscellaneous electrical loads (such as lighting, televisions, computers, 

and other equipment, other than appliances, that use electricity). ............................................132

33 — 2006 International Energy Conservation Code (IECC), Section 404, page 22. ..........................133

34 — MEL = miscellaneous electrical loads (such as lighting, televisions, computers, and other 

equipment, other than appliances, that use electricity). ...............................................................134
733

35 — http://www.waterplowpress.com/. ..................................................................................................135

36 — “gpd/occu” = gallons per day per occupant...................................................................................135

ENDNOTES
U.S. Department of Housing and Urban Development

Office of Policy Development and Research

Washington, DC 20410-6000

October 2012