1919 or

Before

1920 to

1945

1946 to

1959

1960 to

1969

1970 to

1979

1980 to

1989

1990 to

1999

All Buildings ............................................... 4,657 419 499 763 665 774 846 690

Building Floorspace

(Square Feet)

1,001 to 5,000 .............................................. 2,348 227 270 359 321 367 413 390

5,001 to 10,000 ............................................ 1,110 107 102 240 166 193 156 145

10,001 to 25,000 .......................................... 708 63 90 97 84 130 179 65

25,001 to 50,000 .......................................... 257 13 20 39 53 44 43 44

50,001 to 100,000 ........................................ 145 7 9 19 24 26 33 27

100,001 to 200,000 ...................................... 59 Q 5 5 12 8 15 12

200,001 to 500,000 ...................................... 23 Q 234444

Over 500,000 ............................................... 7 Q 111221

Principal Building Activity

Education .................................................... 327 18 32 71 69 53 37 47

Food Sales .................................................. 174 Q Q Q Q Q Q 50

Food Service ............................................... 349 Q 48 Q 50 70 80 Q

Health Care ................................................. 127 Q Q 27 16 38 15 23

 Inpatient ..................................................... 11 Q Q 1 2 2 2Q

 Outpatient .................................................. 116 Q Q Q Q 36 14 23

Lodging ........................................................ 153 Q Q 15 33 33 29 24

Mercantile .................................................... 667 93 61 154 60 112 127 60

 Retail (Other Than Mall) ............................ 534 92 46 140 44 78 88 46

 Enclosed and Strip Malls ........................... 133 Q Q 14 16 35 39 14

Office ........................................................... 739 72 55 96 96 115 169 135

Public Assembly .......................................... 305 34 37 31 58 42 59 43

Public Order and Safety .............................. 72 QQQQQQ 5

Religious Worship ....................................... 307 44 Q 76 47 58 27 33

Service ........................................................ 478 Q 78 89 66 89 88 Q

Warehouse and Storage ............................. 603 36 66 68 62 91 132 149

Other ............................................................ 102 Q Q Q 27 Q Q Q

Vacant ......................................................... 253 49 57 67 45 Q Q Q

Floors

One .............................................................. 2,879 88 209 478 461 568 547 529

Two .............................................................. 1,168 141 166 202 155 155 221 127

Three ........................................................... 420 136 81 72 31 38 45 16

Four to Nine ................................................. 178 52 41 10 17 11 30 17

Ten or More ................................................. 11 Q 212231

Census Region

Northeast ..................................................... 686 126 65 138 97 77 122 62

Midwest ....................................................... 1,188 172 206 174 155 141 165 175

South ........................................................... 1,762 69 155 289 199 338 408 304

West ............................................................ 1,021 52 73 162 215 219 151 149

Workers (main shift)

Fewer than 5 ................................................ 2,376 280 331 405 316 344 371 330

5 to 9 ............................................................ 807 62 65 135 124 174 126 121

10 to 19 ........................................................ 683 52 58 107 95 110 159 102

20 to 49 ........................................................ 487 12 29 84 78 81 116 87

50 to 99 ........................................................ 174 3 8 22 27 43 44 27

100 to 249 .................................................... 90 Q 5 7 21 15 19 16

250 or More ................................................. 39 Q 3 3 5 8 11 7

Weekly Operating Hours

39 or Fewer ................................................. 978 132 140 189 130 152 124 111

40 to 48 ........................................................ 1,156 116 145 213 154 147 222 158

49 to 60 ........................................................ 986 95 75 152 145 185 150 185

61 to 84 ........................................................ 664 39 68 122 109 111 118 96

85 to 167 ...................................................... 474 20 42 41 50 111 128 82

Open Continuously ...................................... 398 17 29 46 77 67 104 58

Table B8. Year Constructed, Number of Buildings, 1999

Year Constructed

Number of Buildings (thousand)

All 

Buildings

Energy Information Administration

1999 Commercial Buildings Energy Consumption Survey: Building Characteristics Tables 28
1919 or

Before

1920 to

1945

1946 to

1959

1960 to

1969

1970 to

1979

1980 to

1989

1990 to

1999

Table B8. Year Constructed, Number of Buildings, 1999

Year Constructed

Number of Buildings (thousand)

All 

Buildings

Ownership and Occupancy

Nongovernment Owned .............................. 4,135 384 436 670 581 684 761 619

 Owner Occupied ........................................ 2,801 256 291 450 377 465 532 431

 Nonowner Occupied .................................. 1,099 94 130 159 172 201 195 148

 Unoccupied ............................................... 236 Q Q 62 QQQQ

Government Owned .................................... 521 35 63 93 85 90 85 71

Vacancy Status

Completely Vacant ...................................... 140 QQQQQQQ

Mostly Vacant .............................................. 113 QQQQQQQ

Partially Vacant ............................................ 697 71 64 89 89 104 134 146

Not At All Vacant ......................................... 3,707 298 379 606 531 652 704 537

Energy Sources (more than

one may apply)

Electricity ..................................................... 4,395 363 480 716 628 758 781 669

Natural Gas ................................................. 2,670 291 329 426 406 481 389 349

Fuel Oil ........................................................ 434 53 55 109 65 37 70 45

District Heat ................................................. 117 20 9 21 18 Q 16 15

District Chilled Water ................................... 50 Q 2 5 7 Q Q 4

Propane ....................................................... 451 Q 45 65 72 66 89 94

Other ............................................................ 153 Q Q 36 12 24 39 Q

Energy End Uses (more than

one may apply)

Buildings with Space Heating ...................... 4,016 350 430 666 557 691 713 608

Buildings with Cooling ................................. 3,560 260 313 589 496 649 702 549

Buildings with Water Heating ...................... 3,239 277 311 493 493 592 623 450

Buildings with Cooking ................................ 857 69 85 115 131 161 173 124

Buildings with Manufacturing ....................... 151 Q Q 28 19 32 37 Q

Buildings with Electricity

 Generation .................................................. 172 Q 4 41 25 23 26 44

Percent of Floorspace Heated

Not Heated .................................................. 641 69 69 97 108 83 133 82

1 to 50 .......................................................... 576 48 79 93 58 107 113 78

51 to 99 ........................................................ 627 56 103 86 75 86 111 109

100 ............................................................... 2,813 246 248 487 424 498 490 421

Percent of Floorspace Cooled

Not Cooled .................................................. 1,097 159 186 174 169 125 144 141

1 to 50 .......................................................... 1,012 105 133 205 126 163 148 131

51 to 99 ........................................................ 751 65 94 102 123 118 128 122

100 ............................................................... 1,796 90 86 282 247 368 426 296

Percent Lit When Open

Zero ............................................................. 34 N N QQQQQ

1 to 50 .......................................................... 835 122 152 159 91 113 108 91

51 to 99 ........................................................ 1,228 121 107 202 218 237 199 144

100 ............................................................... 2,096 99 175 315 283 374 464 387

Building Never Open/

 Electricity Not Used .................................... 464 77 65 82 72 43 73 Q

Heating Equipment (more

than one may apply)

Heat Pumps ................................................. 492 6 23 95 39 102 124 103

Furnaces ...................................................... 1,460 163 206 251 191 205 237 208

Individual Space Heaters ............................ 894 79 107 180 110 172 127 119

District Heat ................................................. 96 19 9 21 16 Q 11 4

Boilers ......................................................... 581 100 83 121 98 63 65 52

Packaged Heating Units .............................. 1,347 40 110 157 213 304 289 235

Other ............................................................ 185 Q Q 33 19 35 59 Q

Energy Information Administration

1999 Commercial Buildings Energy Consumption Survey: Building Characteristics Tables 29
1919 or

Before

1920 to

1945

1946 to

1959

1960 to

1969

1970 to

1979

1980 to

1989

1990 to

1999

Table B8. Year Constructed, Number of Buildings, 1999

Year Constructed

Number of Buildings (thousand)

All 

Buildings

Cooling Equipment (more

than one may apply)

Residential-Type Central

 Air Conditioners .......................................... 676 78 75 129 39 105 143 107

Heat Pumps ................................................. 485 Q 24 89 39 106 121 91

Individual Air Conditioners ........................... 799 101 124 178 102 112 96 86

District Chilled Water ................................... 50 Q 2 5 7 Q Q 4

Central Chillers ............................................ 130 Q 8 13 32 17 22 29

Packaged Air Conditioning

 Units ........................................................... 1,953 92 143 275 332 398 421 291

Swamp Coolers ........................................... 136 Q Q 29 25 33 19 6

Other ............................................................ 49 QQQQQQQ

Main Equipment Replaced Since

1995 (more than one may apply)

Heating ........................................................ 984 83 116 201 128 211 138 107

Cooling ........................................................ 1,085 83 112 216 157 239 186 93

Lighting Equipment Types

(more than one may apply)

Incandescent ............................................... 2,193 221 283 334 307 391 415 242

Standard Fluorescent .................................. 3,778 307 376 622 525 674 721 552

Compact Fluorescent .................................. 607 44 58 56 122 81 123 121

High Intensity Discharge .............................. 430 41 31 54 48 69 94 93

Halogen ....................................................... 572 55 33 79 86 112 131 77

Other ............................................................ 58 QQQQQQQ

Personal Computers

None ............................................................ 1,617 187 222 297 209 243 253 206

1 to 4 ............................................................ 1,636 156 194 274 245 297 272 198

5 to 9 ............................................................ 542 33 28 80 68 117 100 117

10 to 19 ........................................................ 403 27 12 43 66 53 108 94

20 to 49 ........................................................ 247 10 23 49 35 32 57 40

50 to 99 ........................................................ 105 Q 14 10 17 15 29 18

100 to 249 .................................................... 71 3 4 6 18 10 18 12

250 or More ................................................. 36 Q 346795

Photocopiers

None ............................................................ 2,825 289 338 502 409 446 489 352

One .............................................................. 1,114 88 100 160 178 205 184 198

2 to 4 ............................................................ 540 37 53 85 53 89 126 97

5 to 9 ............................................................ 102 Q Q 4 16 21 23 34

10 or More ................................................... 75 3 5 Q 9 13 24 10

Other Electronic Equipment

(more than one may apply)

Laser Printers .............................................. 1,949 163 153 290 305 300 412 327

FAX Machines ............................................. 2,807 222 251 430 383 481 564 476

Medical Diagnostic Equipment .................... 86 Q Q 23 8 28 14 11

Energy-Related Space Functions

(more than one may apply)

Commercial Food Preparation .................... 767 53 82 100 127 135 163 108

Activities with Large

 Amounts of Hot Water ................................ 698 46 92 84 120 154 131 70

Building Shell Conservation

Features (more than one

may apply)

Multipaned Windows ................................... 2,130 206 182 283 282 301 446 428

Tinted, Reflective, or

 Shading Glass ............................................ 1,283 82 71 163 174 283 302 210

Energy Information Administration

1999 Commercial Buildings Energy Consumption Survey: Building Characteristics Tables 30
1919 or

Before

1920 to

1945

1946 to

1959

1960 to

1969

1970 to

1979

1980 to

1989

1990 to

1999

Table B8. Year Constructed, Number of Buildings, 1999

Year Constructed

Number of Buildings (thousand)

All 

Buildings

HVAC Conservation Features

(more than one may apply)

Variable Air-Volume System ....................... 550 16 31 84 74 100 118 127

Economizer Cycle ........................................ 567 23 18 40 121 98 138 129

HVAC Maintenance ..................................... 2,786 233 250 440 405 461 577 420

Energy Management and

 Control System (EMCS) ............................. 460 17 35 52 110 55 102 90

Lighting Conservation Features

(more than one may apply)

Specular Reflectors ..................................... 843 48 48 125 132 155 184 151

Electronic Ballasts ....................................... 2,167 146 201 360 288 428 429 315

Skylights or Atriums ..................................... 580 40 46 64 68 88 184 89

Q=Data withheld because the Relative Standard Error (RSE) was greater than 50 percent, or fewer than 20 buildings were sampled.

N=No responding cases in sample.

Note: Due to rounding, data may not sum to totals.

Source: Energy Information Administration, Office of Energy Markets and End Use, Form EIA-871A of the 1999 Commercial Buildings Energy Consumption 

Survey.

Energy Information Administration

1999 Commercial Buildings Energy Consumption Survey: Building Characteristics Tables 31