Total................................................................... 111.1 72.1 7.6 7.8 16.7 6.9

Floorspace (Square Feet)

Total Floorspace

Fewer than 500............................................ 3.1 Q Q 0.6 1.7 0.4

500 to 999................................................... 22.2 3.5 1.1 4.2 10.2 3.2

1,000 to 1,499............................................. 19.1 9.0 1.6 1.8 4.0 2.6

1,500 to 1,999............................................. 14.4 11.1 1.8 0.5 0.5 0.4

2,000 to 2,499............................................. 12.8 11.3 1.0 0.2 Q Q

2,500 to 2,999............................................. 10.1 9.0 0.7 Q Q Q

3,000 to 3,499............................................. 8.2 7.6 0.5 Q N Q

3,500 to 3,999............................................. 5.7 5.5 Q Q Q N

4,000 or More.............................................. 15.7 14.9 0.7 Q Q N

Heated Floorspace

None............................................................ 3.6 1.1 Q 0.5 1.3 0.4

Fewer than 500............................................ 6.1 2.0 0.4 1.1 2.1 0.6

500 to 999................................................... 27.7 9.8 2.0 3.7 9.0 3.3

1,000 to 1,499............................................. 26.0 16.4 2.1 1.8 3.6 2.1

1,500 to 1,999............................................. 17.6 15.2 1.1 0.4 0.5 0.4

2,000 to 2,499............................................. 10.7 9.5 0.9 Q Q Q

2,500 to 2,999............................................. 7.7 7.1 0.4 Q Q Q

3,000 to 3,499............................................. 3.8 3.6 Q Q N N

3,500 to 3,999............................................. 2.6 2.4 Q Q Q N

4,000 or More.............................................. 5.2 4.9 Q Q Q N

Centrally Cooled Floorspace

None............................................................ 45.2 24.6 3.6 5.0 8.8 3.2

Fewer than 500............................................ 3.9 2.0 0.3 0.4 0.8 0.5

500 to 999................................................... 15.0 6.8 1.1 1.4 4.3 1.5

1,000 to 1,499............................................. 15.6 10.2 1.0 0.8 2.3 1.3

1,500 to 1,999............................................. 11.1 9.9 0.5 Q 0.4 Q

2,000 to 2,499............................................. 7.0 6.1 0.6 Q Q Q

2,500 to 2,999............................................. 5.2 4.8 QQQQ

3,000 to 3,499............................................. 2.7 2.6 Q N N N

3,500 to 3,999............................................. 1.8 1.7 Q N Q N

4,000 or More.............................................. 3.5 3.3 Q N Q N

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2........................................................... 3.4 Q Q 0.4 2.6 Q

3.................................................................. 8.6 0.6 0.7 1.4 5.0 0.9

4.................................................................. 16.9 4.7 1.8 2.7 5.6 2.1

5.................................................................. 23.9 15.1 1.6 2.1 2.8 2.3

6.................................................................. 22.9 19.1 1.8 0.7 0.4 0.9

7.................................................................. 16.5 14.9 0.8 Q Q 0.4

8.................................................................. 9.8 8.9 0.5 Q Q Q

9 or More..................................................... 9.2 8.5 0.4 Q Q Q

Apartments in Buildings 

With-- Housing 

Units 

(millions)

Single-Family Units

Detached

Type of Housing Unit

Table HC2.2 Living Space Characteristics by Type of Housing Unit, 2005

 Million U.S. Housing Units

Living Space Characteristics Attached 2 to 4 Units 5 or More 

Units

Mobile 

Homes

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Apartments in Buildings 

With-- Housing 

Units 

(millions)

Single-Family Units

Detached

Type of Housing Unit

Table HC2.2 Living Space Characteristics by Type of Housing Unit, 2005

 Million U.S. Housing Units

Living Space Characteristics Attached 2 to 4 Units 5 or More 

Units

Mobile 

Homes

Bedrooms

None (Studio/Efficiency).............................. 1.9 N N 0.3 1.6 N

1.................................................................. 10.2 1.0 0.7 1.7 6.3 0.5

2.................................................................. 28.7 11.3 2.8 4.3 7.4 2.9

3.................................................................. 47.5 38.8 3.2 1.2 1.2 3.1

4.................................................................. 18.4 17.1 0.7 Q Q 0.3

5 or More..................................................... 4.3 3.9 0.2 Q Q Q

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency).............................. 1.9 N N 0.3 1.6 N

1.................................................................. 5.3 1.6 Q 0.6 1.9 1.1

2.................................................................. 37.4 17.0 3.2 3.7 9.6 3.9

3.................................................................. 35.0 25.5 2.5 2.4 3.3 1.4

4.................................................................. 19.2 16.8 1.1 0.7 Q 0.4

5 or More..................................................... 12.2 11.2 0.6 Q Q Q

Full Bathrooms

None............................................................ 0.3 Q N Q Q Q

1.................................................................. 54.9 27.4 4.8 6.4 13.4 2.9

2.................................................................. 45.9 35.6 2.1 1.2 3.1 3.9

3 or More..................................................... 9.9 8.8 0.7 Q Q Q

Half Bathrooms

None............................................................ 79.4 47.2 4.2 6.5 15.3 6.2

1.................................................................. 29.7 23.3 3.1 1.2 1.4 0.7

2 or More..................................................... 2.0 1.6 0.3 Q N Q

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes.............................................................. 35.5 30.2 3.8 1.5 N N

No............................................................... 51.9 41.9 3.8 6.2 N N

Not Asked (Mobile Homes or Apartment

in Buildings with 5 or More Units)................ 23.7 N N N 16.7 6.9

Finished Basement

Yes.......................................................... 16.7 14.7 1.6 0.5 N N

No............................................................ 18.7 15.5 2.2 1.0 N N

No Basement........................................... 51.9 41.9 3.8 6.2 N N

Not Asked................................................ 23.7 N N N 16.7 6.9

Number of Finished Rooms

in Basement

1.............................................................. 8.1 7.2 0.7 Q N N

2.............................................................. 3.8 3.4 0.3 Q N N

3 or More................................................. 4.8 4.1 0.6 Q N N

None (Basement Unfinished)................... 18.7 15.5 2.2 1.0 N N

No Basement........................................... 51.9 41.9 3.8 6.2 N N

Not Asked................................................ 23.7 N N N 16.7 6.9

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Apartments in Buildings 

With-- Housing 

Units 

(millions)

Single-Family Units

Detached

Type of Housing Unit

Table HC2.2 Living Space Characteristics by Type of Housing Unit, 2005

 Million U.S. Housing Units

Living Space Characteristics Attached 2 to 4 Units 5 or More 

Units

Mobile 

Homes

Heated Basement

Yes.......................................................... 20.7 17.9 2.1 0.7 N N

All......................................................... 14.3 12.4 1.4 0.5 N N

Part...................................................... 6.4 5.6 0.6 Q N N

None (Basement Not Heated).................. 14.8 12.2 1.7 0.8 N N

No Basement........................................... 51.9 41.9 3.8 6.2 N N

Not Asked................................................ 23.7 N N N 16.7 6.9

Air-Conditioned Basement

Yes.......................................................... 11.4 10.1 1.1 Q N N

All......................................................... 8.4 7.6 0.7 Q N N

Part...................................................... 3.0 2.5 0.3 Q N N

No (Basement Not Cooled)...................... 24.1 20.1 2.7 1.3 N N

No Basement........................................... 51.9 41.9 3.8 6.2 N N

Not Asked................................................ 23.7 N N N 16.7 6.9

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes.............................................................. 22.8 21.6 1.1 Q N N

No............................................................... 64.6 50.5 6.5 7.6 N N

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units).................... 23.7 N N N 16.7 6.9

Finished Attic

Yes.......................................................... 2.7 2.4 0.3 Q N N

No............................................................ 20.1 19.2 0.9 Q N N

No Attic.................................................... 64.6 50.5 6.5 7.6 N N

Not Asked................................................ 23.7 N N N 16.7 6.9

Number of Finished Rooms in Attic

1.............................................................. 2.2 2.0 Q N N N

2 or More................................................. 0.5 0.4 Q Q N N

None (Attic Unfinished)............................ 20.1 19.2 0.9 Q N N

No Attic.................................................... 64.6 50.5 6.5 7.6 N N

Not Asked................................................ 23.7 N N N 16.7 6.9

Heated Attic

Yes.......................................................... 1.3 1.2 Q Q N N

All......................................................... 1.0 0.9 Q Q N N

Part...................................................... 0.3 0.3 Q N N N

No (Attic Not Heated)............................... 21.5 20.4 1.0 Q N N

No Attic.................................................... 64.6 50.5 6.5 7.6 N N

Not Asked................................................ 23.7 N N N 16.7 6.9

Air-Conditioned Attic

Yes.......................................................... 1.0 0.9 Q Q N N

All......................................................... 0.7 0.6 Q Q N N

Part...................................................... 0.3 0.3 Q N N N

No (Attic Not Cooled)............................... 21.9 20.7 1.1 Q N N

No Attic.................................................... 64.6 50.5 6.5 7.6 N N

Not Asked................................................ 23.7 N N N 16.7 6.9

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Apartments in Buildings 

With-- Housing 

Units 

(millions)

Single-Family Units

Detached

Type of Housing Unit

Table HC2.2 Living Space Characteristics by Type of Housing Unit, 2005

 Million U.S. Housing Units

Living Space Characteristics Attached 2 to 4 Units 5 or More 

Units

Mobile 

Homes

Garage/Carport

(Single-Family and Mobile Homes)

Yes................................................................. 61.5 56.1 3.9 N N 1.5

Attached...................................................... 41.8 38.8 2.9 N N Q

1-Car Garage........................................... 9.5 8.3 1.2 N N N

2-Car Garage........................................... 28.4 26.8 1.6 N N Q

3 or More Car Garage.............................. 3.8 3.7 Q N N N

Detached..................................................... 15.2 13.9 0.8 N N 0.5

1-Car Garage........................................... 6.1 5.5 0.4 N N Q

2-Car Garage........................................... 7.8 7.2 0.4 N N Q

3 or More Car Garage.............................. 1.4 1.3 Q N N Q

Carport (only)............................................... 4.7 3.5 Q N N 1.0

No................................................................... 25.1 15.9 3.7 N N 5.4

Not Asked (All Apartments)............................. 24.5 N N 7.8 16.7 N

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were 

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total........................................................... 111.1 78.1 64.1 4.2 1.8 2.3 5.7

Floorspace (Square Feet)

Total Floorspace

Fewer than 500.................................... 3.1 0.9 Q Q Q Q 0.4

500 to 999........................................... 22.2 5.9 2.3 Q 0.3 0.9 2.2

1,000 to 1,499..................................... 19.1 11.4 7.0 0.5 0.6 0.9 2.5

1,500 to 1,999..................................... 14.4 11.5 9.5 1.1 0.3 Q 0.4

2,000 to 2,499..................................... 12.8 11.5 10.5 0.6 Q Q Q

2,500 to 2,999..................................... 10.1 9.0 8.2 0.6 Q Q Q

3,000 to 3,499..................................... 8.2 7.7 7.1 0.4 Q N Q

3,500 to 3,999..................................... 5.7 5.3 5.1 Q Q Q N

4,000 or More...................................... 15.7 14.9 14.2 0.6 Q Q N

Heated Floorspace

None.................................................... 3.6 1.5 0.9 Q Q Q 0.3

Fewer than 500.................................... 6.1 2.8 1.6 Q Q 0.3 0.5

500 to 999........................................... 27.7 11.9 7.7 0.6 0.3 0.8 2.5

1,000 to 1,499..................................... 26.0 18.4 14.0 1.1 0.8 0.7 1.9

1,500 to 1,999..................................... 17.6 15.3 13.8 0.8 Q Q 0.3

2,000 to 2,499..................................... 10.7 10.0 9.1 0.7 Q Q Q

2,500 to 2,999..................................... 7.7 7.2 6.7 0.3 Q Q Q

3,000 to 3,499..................................... 3.8 3.6 3.5 Q Q N N

3,500 to 3,999..................................... 2.6 2.5 2.3 Q Q Q N

4,000 or More...................................... 5.2 5.0 4.7 Q Q Q N

Centrally Cooled Floorspace

None.................................................... 45.2 26.4 20.2 1.7 1.1 0.7 2.6

Fewer than 500.................................... 3.9 2.4 1.7 Q Q Q 0.4

500 to 999........................................... 15.0 8.3 6.1 0.5 Q 0.5 1.1

1,000 to 1,499..................................... 15.6 11.6 8.9 0.4 Q 0.6 1.3

1,500 to 1,999..................................... 11.1 10.2 9.4 0.4 Q Q Q

2,000 to 2,499..................................... 7.0 6.6 5.9 0.4 Q Q Q

2,500 to 2,999..................................... 5.2 4.8 4.5 QQQQ

3,000 to 3,499..................................... 2.7 2.6 2.6 Q N N N

3,500 to 3,999..................................... 1.8 1.8 1.7 Q N Q N

4,000 or More...................................... 3.5 3.4 3.2 Q N Q N

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2................................................... 3.4 0.5 Q N N Q Q

3.......................................................... 8.6 1.4 0.3 Q Q 0.3 0.7

4.......................................................... 16.9 7.3 3.5 0.6 0.6 1.0 1.6

5.......................................................... 23.9 16.5 12.7 0.9 0.4 0.5 2.0

6.......................................................... 22.9 19.4 17.0 1.3 0.3 Q 0.7

7.......................................................... 16.5 15.0 13.9 0.6 Q Q 0.4

8.......................................................... 9.8 9.2 8.6 0.4 Q N Q

9 or More............................................. 9.2 8.8 8.1 0.4 Q Q Q

 Million U.S. Housing Units

 OwnerOccupied 

Housing 

Units 

(millions)

Type of Owner-Occupied Housing Unit

U.S.

Housing 

Units 

(millions

Single-Family Units Apartments in 

Buildings With--

Living Space Characteristics Detached Attached

Table HC3.2 Living Space Characteristics by Owner-Occupied Housing Units, 2005

2 to 4 

Units

5 or More 

Units

Mobile 

Homes

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
 Million U.S. Housing Units

 OwnerOccupied 

Housing 

Units 

(millions)

Type of Owner-Occupied Housing Unit

U.S.

Housing 

Units 

(millions

Single-Family Units Apartments in 

Buildings With--

Living Space Characteristics Detached Attached

Table HC3.2 Living Space Characteristics by Owner-Occupied Housing Units, 2005

2 to 4 

Units

5 or More 

Units

Mobile 

Homes

Bedrooms

None (Studio/Efficiency)...................... 1.9 Q N N N Q N

1.......................................................... 10.2 1.7 0.7 Q Q 0.4 0.5

2.......................................................... 28.7 14.9 9.0 1.2 1.0 1.5 2.2

3.......................................................... 47.5 40.7 34.9 2.2 0.4 0.3 2.8

4.......................................................... 18.4 16.8 15.9 0.5 Q N Q

5 or More............................................. 4.3 4.0 3.6 Q Q N Q

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency)...................... 1.9 Q N N N Q N

1.......................................................... 5.3 2.4 1.1 Q Q Q 0.9

2.......................................................... 37.4 19.6 13.6 1.1 0.8 1.1 3.1

3.......................................................... 35.0 26.8 22.8 1.7 0.6 0.6 1.2

4.......................................................... 19.2 17.4 15.8 0.9 0.3 Q 0.3

5 or More............................................. 12.2 11.7 10.8 0.5 Q Q Q

Full Bathrooms

None.................................................... 0.3 Q Q N N N Q

1.......................................................... 54.9 29.4 22.4 2.0 1.3 1.4 2.2

2.......................................................... 45.9 39.3 33.0 1.6 0.5 0.8 3.4

3 or More............................................. 9.9 9.3 8.4 0.6 Q Q Q

Half Bathrooms

None.................................................... 79.4 50.8 40.8 1.8 1.2 1.8 5.1

1.......................................................... 29.7 25.5 21.8 2.0 0.6 0.5 0.6

2 or More............................................. 2.0 1.8 1.5 Q Q N Q

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes...................................................... 35.5 30.9 27.5 2.4 1.0 N N

No........................................................ 51.9 39.1 36.5 1.7 0.9 N N

Not Asked (Mobile Homes or Apartment

in Buildings with 5 or More Units)......... 23.7 8.0 N N N 2.3 5.7

Finished Basement

Yes.................................................. 16.7 15.5 14.0 1.1 0.4 N N

No.................................................... 18.7 15.4 13.5 1.3 0.6 N N

No Basement................................... 51.9 39.1 36.5 1.7 0.9 N N

Not Asked........................................ 23.7 8.0 N N N 2.3 5.7

Number of Finished Rooms

in Basement

1...................................................... 8.1 7.4 6.8 0.4 Q N N

2...................................................... 3.8 3.6 3.2 0.2 Q N N

3 or More......................................... 4.8 4.5 4.0 Q Q N N

None (Basement Unfinished)........... 18.7 15.4 13.5 1.3 0.6 N N

No Basement................................... 51.9 39.1 36.5 1.7 0.9 N N

Not Asked........................................ 23.7 8.0 N N N 2.3 5.7

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
 Million U.S. Housing Units

 OwnerOccupied 

Housing 

Units 

(millions)

Type of Owner-Occupied Housing Unit

U.S.

Housing 

Units 

(millions

Single-Family Units Apartments in 

Buildings With--

Living Space Characteristics Detached Attached

Table HC3.2 Living Space Characteristics by Owner-Occupied Housing Units, 2005

2 to 4 

Units

5 or More 

Units

Mobile 

Homes

Heated Basement

Yes.................................................. 20.7 18.9 16.8 1.5 0.6 N N

All................................................. 14.3 13.1 11.6 1.0 0.4 N N

Part.............................................. 6.4 5.8 5.2 0.5 Q N N

None (Basement Not Heated).......... 14.8 12.0 10.7 0.9 0.4 N N

No Basement................................... 51.9 39.1 36.5 1.7 0.9 N N

Not Asked........................................ 23.7 8.0 N N N 2.3 5.7

Air-Conditioned Basement

Yes.................................................. 11.4 10.6 9.6 0.8 Q N N

All................................................. 8.4 7.8 7.2 0.6 Q N N

Part.............................................. 3.0 2.7 2.4 0.2 Q N N

No (Basement Not Cooled).............. 24.1 20.4 17.9 1.6 0.8 N N

No Basement................................... 51.9 39.1 36.5 1.7 0.9 N N

Not Asked........................................ 23.7 8.0 N N N 2.3 5.7

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes...................................................... 22.8 20.6 19.8 0.7 Q N N

No........................................................ 64.6 49.5 44.2 3.5 1.8 N N

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)............ 23.7 8.0 N N N 2.3 5.7

Finished Attic

Yes.................................................. 2.7 2.3 2.1 Q Q N N

No.................................................... 20.1 18.3 17.7 0.5 Q N N

No Attic............................................ 64.6 49.5 44.2 3.5 1.8 N N

Not Asked........................................ 23.7 8.0 N N N 2.3 5.7

Number of Finished Rooms in Attic

1...................................................... 2.2 1.9 1.8 Q N N N

2 or More......................................... 0.5 0.4 0.3 Q Q N N

None (Attic Unfinished).................... 20.1 18.3 17.7 0.5 Q N N

No Attic............................................ 64.6 49.5 44.2 3.5 1.8 N N

Not Asked........................................ 23.7 8.0 N N N 2.3 5.7

Heated Attic

Yes.................................................. 1.3 1.1 1.0 Q Q N N

All................................................. 1.0 0.8 0.7 Q Q N N

Part.............................................. 0.3 0.3 0.3 NNNN

No (Attic Not Heated)....................... 21.5 19.5 18.8 0.6 Q N N

No Attic............................................ 64.6 49.5 44.2 3.5 1.8 N N

Not Asked........................................ 23.7 8.0 N N N 2.3 5.7

Air-Conditioned Attic

Yes.................................................. 1.0 0.9 0.8 Q Q N N

All................................................. 0.7 0.6 0.5 Q Q N N

Part.............................................. 0.3 0.3 0.3 Q N N N

No (Attic Not Cooled)....................... 21.9 19.7 19.0 0.7 Q N N

No Attic............................................ 64.6 49.5 44.2 3.5 1.8 N N

Not Asked........................................ 23.7 8.0 N N N 2.3 5.7

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
 Million U.S. Housing Units

 OwnerOccupied 

Housing 

Units 

(millions)

Type of Owner-Occupied Housing Unit

U.S.

Housing 

Units 

(millions

Single-Family Units Apartments in 

Buildings With--

Living Space Characteristics Detached Attached

Table HC3.2 Living Space Characteristics by Owner-Occupied Housing Units, 2005

2 to 4 

Units

5 or More 

Units

Mobile 

Homes

Garage/Carport

(Single-Family and Mobile Homes)

Yes.......................................................... 61.5 55.5 51.3 2.7 N N 1.4

Attached.............................................. 41.8 38.2 35.9 2.2 N N Q

1-Car Garage................................... 9.5 7.8 7.1 0.7 N N N

2-Car Garage................................... 28.4 26.7 25.3 1.3 N N Q

3 or More Car Garage...................... 3.8 3.8 3.6 Q N N N

Detached............................................. 15.2 13.5 12.6 0.4 N N 0.5

1-Car Garage................................... 6.1 5.1 4.6 Q N N Q

2-Car Garage................................... 7.8 7.1 6.7 Q N N Q

3 or More Car Garage...................... 1.4 1.3 1.2 N N N Q

Carport (only)....................................... 4.7 4.0 3.0 Q N N 0.9

No........................................................... 25.1 18.5 12.7 1.4 N N 4.3

Not Asked (All Apartments)..................... 24.5 4.1 N N 1.8 2.3 N

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were 

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total........................................................... 111.1 33.0 8.0 3.4 5.9 14.4 1.2

Floorspace (Square Feet)

Total Floorspace

Fewer than 500.................................... 3.1 2.1 Q Q 0.4 1.5 Q

500 to 999........................................... 22.2 16.3 1.1 0.9 3.9 9.3 1.0

1,000 to 1,499..................................... 19.1 7.6 2.0 1.1 1.2 3.2 Q

1,500 to 1,999..................................... 14.4 2.9 1.6 0.7 Q 0.4 Q

2,000 to 2,499..................................... 12.8 1.3 0.8 0.3 Q Q N

2,500 to 2,999..................................... 10.1 1.1 0.8 Q Q Q N

3,000 to 3,499..................................... 8.2 0.5 0.5 Q N N N

3,500 to 3,999..................................... 5.7 0.4 0.4 N Q N N

4,000 or More...................................... 15.7 0.8 0.7 Q N Q N

Heated Floorspace

None.................................................... 3.6 2.1 Q Q 0.4 1.1 Q

Fewer than 500.................................... 6.1 3.3 0.4 Q 0.8 1.8 Q

500 to 999........................................... 27.7 15.9 2.1 1.4 3.4 8.2 0.8

1,000 to 1,499..................................... 26.0 7.6 2.5 1.0 1.1 2.9 Q

1,500 to 1,999..................................... 17.6 2.3 1.5 0.3 0.2 0.3 Q

2,000 to 2,499..................................... 10.7 0.7 0.4 0.2 Q Q N

2,500 to 2,999..................................... 7.7 0.5 0.4 Q N Q N

3,000 to 3,499..................................... 3.8 Q Q N N N N

3,500 to 3,999..................................... 2.6 Q Q N N N N

4,000 or More...................................... 5.2 0.2 0.2 N N Q N

Centrally Cooled Floorspace

None.................................................... 45.2 18.9 4.4 1.9 3.8 8.1 0.6

Fewer than 500.................................... 3.9 1.5 0.3 Q 0.3 0.6 Q

500 to 999........................................... 15.0 6.7 0.7 0.5 1.3 3.8 0.4

1,000 to 1,499..................................... 15.6 4.0 1.3 0.5 0.5 1.7 Q

1,500 to 1,999..................................... 11.1 1.0 0.5 Q Q Q Q

2,000 to 2,499..................................... 7.0 0.4 0.3 Q N N N

2,500 to 2,999..................................... 5.2 0.4 0.3 Q N Q N

3,000 to 3,499..................................... 2.7 Q Q N N N N

3,500 to 3,999..................................... 1.8 N N N N NN

4,000 or More...................................... 3.5 Q Q N N N N

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2................................................... 3.4 2.9 Q Q 0.4 2.4 N

3.......................................................... 8.6 7.2 0.4 0.7 1.3 4.7 Q

4.......................................................... 16.9 9.6 1.3 1.2 2.1 4.5 0.5

5.......................................................... 23.9 7.3 2.4 0.7 1.6 2.3 0.3

6.......................................................... 22.9 3.5 2.2 0.5 0.3 0.4 Q

7.......................................................... 16.5 1.4 1.0 0.2 Q Q Q

8.......................................................... 9.8 0.6 0.4 Q Q Q N

9 or More............................................. 9.2 0.4 0.4 N Q Q N

 Million U.S. Housing Units

 RenterOccupied 

Housing 

Units 

(millions)

Type of Renter-Occupied Housing Unit

U.S.

Housing 

Units 

(millions

Single-Family Units Apartments in 

Buildings With--

Living Space Characteristics Detached Attached

Table HC4.2 Living Space Characteristics by Renter-Occupied Housing Units, 2005

2 to 4 

Units

5 or More 

Units

Mobile 

Homes

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
 Million U.S. Housing Units

 RenterOccupied 

Housing 

Units 

(millions)

Type of Renter-Occupied Housing Unit

U.S.

Housing 

Units 

(millions

Single-Family Units Apartments in 

Buildings With--

Living Space Characteristics Detached Attached

Table HC4.2 Living Space Characteristics by Renter-Occupied Housing Units, 2005

2 to 4 

Units

5 or More 

Units

Mobile 

Homes

Bedrooms

None (Studio/Efficiency)...................... 1.9 1.8 N N 0.3 1.5 N

1.......................................................... 10.2 8.6 0.3 0.7 1.5 5.9 Q

2.......................................................... 28.7 13.8 2.3 1.5 3.3 5.9 0.8

3.......................................................... 47.5 6.8 3.9 1.0 0.8 0.9 0.3

4.......................................................... 18.4 1.7 1.2 0.2 Q Q Q

5 or More............................................. 4.3 0.4 0.3 Q N Q N

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency)...................... 1.9 1.8 N N 0.3 1.5 N

1.......................................................... 5.3 2.9 0.4 Q 0.6 1.6 Q

2.......................................................... 37.4 17.7 3.4 2.1 2.9 8.4 0.8

3.......................................................... 35.0 8.2 2.8 0.8 1.8 2.7 Q

4.......................................................... 19.2 1.8 1.0 0.3 0.3 Q Q

5 or More............................................. 12.2 0.6 0.4 Q Q Q N

Full Bathrooms

None.................................................... 0.3 Q Q N Q Q N

1.......................................................... 54.9 25.6 5.0 2.8 5.1 11.9 0.7

2.......................................................... 45.9 6.6 2.6 0.5 0.7 2.3 0.5

3 or More............................................. 9.9 0.7 0.4 Q Q Q N

Half Bathrooms

None.................................................... 79.4 28.6 6.4 2.4 5.3 13.4 1.1

1.......................................................... 29.7 4.2 1.5 1.0 0.6 1.0 Q

2 or More............................................. 2.0 Q Q Q Q NN

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes...................................................... 35.5 4.5 2.7 1.3 0.6 N N

No........................................................ 51.9 12.8 5.3 2.1 5.4 N N

Not Asked (Mobile Homes or Apartment

in Buildings with 5 or More Units)......... 23.7 15.6 N N N 14.4 1.2

Finished Basement

Yes.................................................. 16.7 1.2 0.6 0.4 Q N N

No.................................................... 18.7 3.3 2.0 0.9 0.4 N N

No Basement................................... 51.9 12.8 5.3 2.1 5.4 N N

Not Asked........................................ 23.7 15.6 N N N 14.4 1.2

Number of Finished Rooms

in Basement

1...................................................... 8.1 0.7 0.4 0.3 Q N N

2...................................................... 3.8 0.2 Q Q N N N

3 or More......................................... 4.8 0.3 Q Q Q N N

None (Basement Unfinished)........... 18.7 3.3 2.0 0.9 0.4 N N

No Basement................................... 51.9 12.8 5.3 2.1 5.4 N N

Not Asked........................................ 23.7 15.6 N N N 14.4 1.2

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
 Million U.S. Housing Units

 RenterOccupied 

Housing 

Units 

(millions)

Type of Renter-Occupied Housing Unit

U.S.

Housing 

Units 

(millions

Single-Family Units Apartments in 

Buildings With--

Living Space Characteristics Detached Attached

Table HC4.2 Living Space Characteristics by Renter-Occupied Housing Units, 2005

2 to 4 

Units

5 or More 

Units

Mobile 

Homes

Heated Basement

Yes.................................................. 20.7 1.8 1.1 0.6 Q N N

All................................................. 14.3 1.2 0.7 0.4 Q N N

Part.............................................. 6.4 0.6 0.4 Q Q N N

None (Basement Not Heated).......... 14.8 2.7 1.6 0.8 0.4 N N

No Basement................................... 51.9 12.8 5.3 2.1 5.4 N N

Not Asked........................................ 23.7 15.6 N N N 14.4 1.2

Air-Conditioned Basement

Yes.................................................. 11.4 0.8 0.5 0.3 Q N N

All................................................. 8.4 0.6 0.4 Q N N N

Part.............................................. 3.0 Q Q Q Q NN

No (Basement Not Cooled).............. 24.1 3.7 2.2 1.1 0.5 N N

No Basement................................... 51.9 12.8 5.3 2.1 5.4 N N

Not Asked........................................ 23.7 15.6 N N N 14.4 1.2

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes...................................................... 22.8 2.3 1.8 0.4 Q N N

No........................................................ 64.6 15.1 6.2 3.0 5.8 N N

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)............ 23.7 15.6 N N N 14.4 1.2

Finished Attic

Yes.................................................. 2.7 0.5 0.3 Q N N N

No.................................................... 20.1 1.8 1.4 0.3 Q N N

No Attic............................................ 64.6 15.1 6.2 3.0 5.8 N N

Not Asked........................................ 23.7 15.6 N N N 14.4 1.2

Number of Finished Rooms in Attic

1...................................................... 2.2 0.3 0.3 Q N N N

2 or More......................................... 0.5 Q Q Q N N N

None (Attic Unfinished).................... 20.1 1.8 1.4 0.3 Q N N

No Attic............................................ 64.6 15.1 6.2 3.0 5.8 N N

Not Asked........................................ 23.7 15.6 N N N 14.4 1.2

Heated Attic

Yes.................................................. 1.3 0.3 Q Q N N N

All................................................. 1.0 0.2 Q Q N N N

Part.............................................. 0.3 Q Q Q N N N

No (Attic Not Heated)....................... 21.5 2.0 1.6 0.4 Q N N

No Attic............................................ 64.6 15.1 6.2 3.0 5.8 N N

Not Asked........................................ 23.7 15.6 N N N 14.4 1.2

Air-Conditioned Attic

Yes.................................................. 1.0 Q Q N N N N

All................................................. 0.7 Q Q N N N N

Part.............................................. 0.3 N N N N NN

No (Attic Not Cooled)....................... 21.9 2.2 1.7 0.4 Q N N

No Attic............................................ 64.6 15.1 6.2 3.0 5.8 N N

Not Asked........................................ 23.7 15.6 N N N 14.4 1.2

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
 Million U.S. Housing Units

 RenterOccupied 

Housing 

Units 

(millions)

Type of Renter-Occupied Housing Unit

U.S.

Housing 

Units 

(millions

Single-Family Units Apartments in 

Buildings With--

Living Space Characteristics Detached Attached

Table HC4.2 Living Space Characteristics by Renter-Occupied Housing Units, 2005

2 to 4 

Units

5 or More 

Units

Mobile 

Homes

Garage/Carport

(Single-Family and Mobile Homes)

Yes.......................................................... 61.5 6.0 4.8 1.1 N N Q

Attached.............................................. 41.8 3.6 2.9 0.7 N N N

1-Car Garage................................... 9.5 1.7 1.3 0.5 N N N

2-Car Garage................................... 28.4 1.8 1.5 0.3 N N N

3 or More Car Garage...................... 3.8 Q Q N N N N

Detached............................................. 15.2 1.7 1.4 0.3 N N N

1-Car Garage................................... 6.1 1.0 0.8 Q N N N

2-Car Garage................................... 7.8 0.6 0.5 Q N N N

3 or More Car Garage...................... 1.4 Q Q Q N N N

Carport (only)....................................... 4.7 0.7 0.6 Q N N Q

No........................................................... 25.1 6.6 3.2 2.3 N N 1.1

Not Asked (All Apartments)..................... 24.5 20.4 N N 5.9 14.4 N

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households

were sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total........................................................... 111.1 14.7 7.4 12.5 12.5 18.9 18.6 17.3 9.2

Floorspace (Square Feet)

Total Floorspace

Fewer than 500.................................... 3.1 0.7 Q 0.2 0.3 0.7 0.5 0.3 Q

500 to 999........................................... 22.2 2.6 1.3 2.1 2.7 5.3 4.8 2.6 0.9

1,000 to 1,499..................................... 19.1 2.3 1.1 2.2 2.3 3.2 3.3 3.3 1.3

1,500 to 1,999..................................... 14.4 1.9 1.7 2.2 1.6 2.0 2.0 2.0 1.0

2,000 to 2,499..................................... 12.8 1.4 0.9 1.9 1.7 2.4 2.0 1.6 1.0

2,500 to 2,999..................................... 10.1 1.6 0.7 1.3 1.2 1.6 1.8 1.3 0.7

3,000 to 3,499..................................... 8.2 1.0 0.7 0.9 0.9 1.4 1.2 1.3 0.8

3,500 to 3,999..................................... 5.7 1.1 0.4 0.7 0.6 0.8 0.5 1.0 0.6

4,000 or More...................................... 15.7 2.3 0.5 1.0 1.2 1.6 2.6 4.0 2.6

Heated Floorspace

None.................................................... 3.6 Q 0.3 0.2 0.6 1.0 0.5 0.5 Q

Fewer than 500.................................... 6.1 1.2 0.4 0.7 0.9 1.3 0.8 0.6 0.2

500 to 999........................................... 27.7 3.8 2.4 3.2 2.9 5.3 5.5 3.4 1.3

1,000 to 1,499..................................... 26.0 3.4 1.7 3.4 2.9 4.6 4.2 4.0 1.9

1,500 to 1,999..................................... 17.6 2.2 1.0 2.4 2.1 3.0 2.5 2.8 1.6

2,000 to 2,499..................................... 10.7 1.5 0.6 1.2 1.1 1.6 2.1 1.5 1.1

2,500 to 2,999..................................... 7.7 0.8 0.5 0.7 1.0 0.8 1.3 1.7 0.9

3,000 to 3,499..................................... 3.8 0.6 Q Q 0.4 0.6 0.4 0.8 0.5

3,500 to 3,999..................................... 2.6 0.5 Q Q 0.3 Q 0.3 0.6 0.4

4,000 or More...................................... 5.2 0.6 Q 0.3 Q 0.6 0.9 1.5 0.9

Centrally Cooled Floorspace

None.................................................... 45.2 10.9 4.8 6.4 5.7 7.7 5.3 3.4 1.1

Fewer than 500.................................... 3.9 Q Q 0.4 0.3 1.0 1.0 0.6 0.4

500 to 999........................................... 15.0 1.0 0.6 1.2 1.5 2.6 4.1 2.9 1.1

1,000 to 1,499..................................... 15.6 0.9 0.8 1.8 1.7 2.7 2.5 3.5 1.7

1,500 to 1,999..................................... 11.1 0.5 0.6 1.2 1.2 2.3 1.9 2.0 1.4

2,000 to 2,499..................................... 7.0 0.3 Q 0.8 0.8 1.1 1.4 1.4 1.1

2,500 to 2,999..................................... 5.2 0.3 Q 0.4 0.7 0.5 1.0 1.3 0.8

3,000 to 3,499..................................... 2.7 0.3 Q Q Q 0.5 0.4 0.6 0.4

3,500 to 3,999..................................... 1.8 Q Q Q Q Q 0.3 0.6 0.4

4,000 or More...................................... 3.5 0.3 Q Q Q 0.3 0.6 1.1 0.8

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2................................................... 3.4 0.5 0.3 0.4 0.4 0.7 0.5 0.5 Q

3.......................................................... 8.6 1.0 0.5 0.6 1.0 1.9 1.9 1.1 0.6

4.......................................................... 16.9 2.6 1.3 2.0 1.6 3.5 2.9 2.3 0.7

5.......................................................... 23.9 2.9 1.8 3.3 2.5 4.1 3.8 3.4 2.0

6.......................................................... 22.9 2.5 1.7 3.4 2.9 3.6 3.7 3.4 1.8

7.......................................................... 16.5 2.5 1.0 1.7 2.0 2.6 2.7 2.5 1.4

8.......................................................... 9.8 1.4 0.4 0.6 1.0 1.4 1.7 2.0 1.2

9 or More............................................. 9.2 1.4 0.4 0.5 1.0 1.2 1.4 2.1 1.3

Table HC5.2 Living Space Characteristics by Year of Construction, 2005

Living Space Characteristics

1970 to 

1979

1980 to 

1989

1990 to 

1999

2000 to 

2005

 Million U.S. Housing Units

Year of Construction

Housing 

Units 

(millions)

Before 

1940

1940 to 

1949

1950 to 

1959

1960 to 

1969

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC5.2 Living Space Characteristics by Year of Construction, 2005

Living Space Characteristics

1970 to 

1979

1980 to 

1989

1990 to 

1999

2000 to 

2005

 Million U.S. Housing Units

Year of Construction

Housing 

Units 

(millions)

Before 

1940

1940 to 

1949

1950 to 

1959

1960 to 

1969

Bedrooms

None (Studio/Efficiency)...................... 1.9 0.4 Q Q 0.2 0.4 0.2 Q Q

1.......................................................... 10.2 1.4 0.8 0.9 1.2 2.1 1.9 1.3 0.6

2.......................................................... 28.7 4.8 2.4 3.9 2.8 5.5 4.8 3.0 1.4

3.......................................................... 47.5 5.0 2.9 5.8 5.4 7.9 8.3 8.1 4.1

4.......................................................... 18.4 2.2 0.9 1.5 2.2 2.4 2.8 3.8 2.5

5 or More............................................. 4.3 0.8 Q 0.2 0.6 0.6 0.5 0.9 0.5

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency)...................... 1.9 0.4 Q Q 0.2 0.4 0.2 Q Q

1.......................................................... 5.3 0.4 0.3 0.3 0.6 1.1 0.9 1.2 0.5

2.......................................................... 37.4 3.9 2.4 4.7 4.5 7.3 6.7 5.3 2.4

3.......................................................... 35.0 5.0 2.9 4.8 3.7 5.5 5.5 4.8 2.9

4.......................................................... 19.2 3.1 1.0 1.7 2.1 2.9 3.3 3.2 1.8

5 or More............................................. 12.2 1.8 0.5 0.9 1.3 1.8 1.9 2.6 1.5

Full Bathrooms

None.................................................... 0.3 Q Q N QQQQN

1.......................................................... 54.9 11.2 5.5 8.7 7.6 9.5 7.0 3.9 1.4

2.......................................................... 45.9 2.8 1.5 3.3 4.1 8.0 9.6 10.5 6.0

3 or More............................................. 9.9 0.5 0.4 0.5 0.7 1.2 1.9 2.9 1.8

Half Bathrooms

None.................................................... 79.4 10.8 5.7 10.0 9.1 13.9 12.6 11.6 5.7

1.......................................................... 29.7 3.4 1.6 2.5 3.0 4.8 5.5 5.5 3.4

2 or More............................................. 2.0 0.5 Q Q Q Q 0.5 0.2 Q

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes...................................................... 35.5 8.3 3.2 5.5 3.6 4.1 3.7 4.6 2.5

No........................................................ 51.9 4.9 3.2 5.9 6.3 8.8 9.4 8.5 4.9

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)............ 23.7 1.4 1.0 1.2 2.5 6.0 5.5 4.2 1.8

Finished Basement

Yes.................................................. 16.7 2.0 1.4 2.6 2.6 2.4 2.1 2.9 0.8

No.................................................... 18.7 6.3 1.9 2.9 1.0 1.7 1.6 1.8 1.6

No Basement................................... 51.9 4.9 3.2 5.9 6.3 8.8 9.4 8.5 4.9

Not Asked........................................ 23.7 1.4 1.0 1.2 2.5 6.0 5.5 4.2 1.8

Number of Finished Rooms

in Basement

1...................................................... 8.1 1.2 1.0 1.2 1.3 1.1 0.8 1.1 0.4

2...................................................... 3.8 0.4 0.3 0.7 0.7 0.5 0.5 0.6 Q

3 or More......................................... 4.8 0.5 Q 0.7 0.6 0.8 0.8 1.1 Q

None (Basement Unfinished)........... 18.7 6.3 1.9 2.9 1.0 1.7 1.6 1.8 1.6

No Basement................................... 51.9 4.9 3.2 5.9 6.3 8.8 9.4 8.5 4.9

Not Asked........................................ 23.7 1.4 1.0 1.2 2.5 6.0 5.5 4.2 1.8

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC5.2 Living Space Characteristics by Year of Construction, 2005

Living Space Characteristics

1970 to 

1979

1980 to 

1989

1990 to 

1999

2000 to 

2005

 Million U.S. Housing Units

Year of Construction

Housing 

Units 

(millions)

Before 

1940

1940 to 

1949

1950 to 

1959

1960 to 

1969

Heated Basement

Yes.................................................. 20.7 3.3 2.0 3.3 2.4 2.7 2.4 3.0 1.5

All................................................. 14.3 2.2 1.3 2.2 1.8 2.1 1.7 2.0 1.0

Part.............................................. 6.4 1.1 0.6 1.1 0.7 0.6 0.7 1.1 0.5

None (Basement Not Heated).......... 14.8 5.0 1.3 2.2 1.2 1.4 1.3 1.6 0.9

No Basement................................... 51.9 4.9 3.2 5.9 6.3 8.8 9.4 8.5 4.9

Not Asked........................................ 23.7 1.4 1.0 1.2 2.5 6.0 5.5 4.2 1.8

Air-Conditioned Basement

Yes.................................................. 11.4 1.0 0.7 1.7 1.6 1.4 1.6 2.3 1.1

All................................................. 8.4 0.8 0.6 1.3 1.2 1.2 1.2 1.5 0.7

Part.............................................. 3.0 Q Q 0.5 0.4 Q 0.4 0.8 0.4

No (Basement Not Cooled).............. 24.1 7.4 2.5 3.7 2.0 2.7 2.0 2.3 1.4

No Basement................................... 51.9 4.9 3.2 5.9 6.3 8.8 9.4 8.5 4.9

Not Asked........................................ 23.7 1.4 1.0 1.2 2.5 6.0 5.5 4.2 1.8

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes...................................................... 22.8 4.1 1.7 2.7 2.3 3.2 2.8 3.4 2.4

No........................................................ 64.6 9.1 4.7 8.6 7.6 9.7 10.2 9.7 5.0

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)............ 23.7 1.4 1.0 1.2 2.5 6.0 5.5 4.2 1.8

Finished Attic

Yes.................................................. 2.7 0.8 0.3 0.3 Q Q Q 0.4 0.4

No.................................................... 20.1 3.3 1.4 2.4 2.1 3.1 2.7 3.1 2.0

No Attic............................................ 64.6 9.1 4.7 8.6 7.6 9.7 10.2 9.7 5.0

Not Asked........................................ 23.7 1.4 1.0 1.2 2.5 6.0 5.5 4.2 1.8

Number of Finished Rooms in Attic

1...................................................... 2.2 0.6 0.3 0.3 Q Q Q 0.4 0.4

2 or More......................................... 0.5 0.2 QQQQQNQ

None (Attic Unfinished).................... 20.1 3.3 1.4 2.4 2.1 3.1 2.7 3.1 2.0

No Attic............................................ 64.6 9.1 4.7 8.6 7.6 9.7 10.2 9.7 5.0

Not Asked........................................ 23.7 1.4 1.0 1.2 2.5 6.0 5.5 4.2 1.8

Heated Attic

Yes.................................................. 1.3 0.4 QQQQQQQ

All................................................. 1.0 0.3 QQQQQQQ

Part.............................................. 0.3 QQQQQNNQ

No (Attic Not Heated)....................... 21.5 3.7 1.5 2.6 2.2 3.1 2.8 3.4 2.3

No Attic............................................ 64.6 9.1 4.7 8.6 7.6 9.7 10.2 9.7 5.0

Not Asked........................................ 23.7 1.4 1.0 1.2 2.5 6.0 5.5 4.2 1.8

Air-Conditioned Attic

Yes.................................................. 1.0 0.3 QQQQQQQ

All................................................. 0.7 QQQQQQQQ

Part.............................................. 0.3 Q Q Q N N N Q Q

No (Attic Not Cooled)....................... 21.9 3.8 1.6 2.6 2.3 3.1 2.8 3.3 2.3

No Attic............................................ 64.6 9.1 4.7 8.6 7.6 9.7 10.2 9.7 5.0

Not Asked........................................ 23.7 1.4 1.0 1.2 2.5 6.0 5.5 4.2 1.8

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC5.2 Living Space Characteristics by Year of Construction, 2005

Living Space Characteristics

1970 to 

1979

1980 to 

1989

1990 to 

1999

2000 to 

2005

 Million U.S. Housing Units

Year of Construction

Housing 

Units 

(millions)

Before 

1940

1940 to 

1949

1950 to 

1959

1960 to 

1969

Garage/Carport

(Single-Family and Mobile Homes)

Yes.......................................................... 61.5 6.6 4.3 7.5 6.8 9.4 9.5 11.0 6.4

Attached.............................................. 41.8 1.6 1.8 3.8 4.7 6.8 7.8 9.2 6.0

1-Car Garage................................... 9.5 0.8 0.9 2.0 2.1 1.5 1.1 0.8 0.4

2-Car Garage................................... 28.4 0.7 0.8 1.8 2.6 5.1 6.2 6.6 4.6

3 or More Car Garage...................... 3.8 Q Q Q Q Q 0.6 1.8 1.0

Detached............................................. 15.2 4.6 2.2 3.0 1.1 1.6 1.1 1.3 0.3

1-Car Garage................................... 6.1 2.1 1.0 1.4 0.5 0.4 0.4 0.4 N

2-Car Garage................................... 7.8 2.2 1.1 1.3 0.5 1.1 0.6 0.7 0.2

3 or More Car Garage...................... 1.4 0.3 QQQQQQQ

Carport (only)....................................... 4.7 0.4 0.4 0.8 1.0 1.0 0.6 0.5 Q

No........................................................... 25.1 4.3 1.6 3.4 2.8 4.3 4.2 3.4 1.2

Not Asked (All Apartments)..................... 24.5 3.8 1.4 1.7 2.9 5.2 4.9 3.0 1.6

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC6.2 Living Space Characteristics by Number of Household Members, 2005

Total...................................................................... 111.1 30.0 34.8 18.4 15.9 12.0

Floorspace (Square Feet)

Total Floorspace

Fewer than 500............................................... 3.1 1.7 0.7 0.4 Q Q

500 to 999....................................................... 22.2 9.9 5.8 3.0 2.2 1.3

1,000 to 1,499................................................. 19.1 5.1 5.9 2.9 2.9 2.3

1,500 to 1,999................................................. 14.4 3.4 4.2 2.6 2.3 1.9

2,000 to 2,499................................................. 12.8 3.4 4.1 2.2 1.6 1.4

2,500 to 2,999................................................. 10.1 1.5 3.8 1.9 1.7 1.2

3,000 to 3,499................................................. 8.2 1.8 3.4 1.3 0.8 0.9

3,500 to 3,999................................................. 5.7 1.3 2.0 0.8 1.0 0.7

4,000 or More.................................................. 15.7 2.1 5.1 3.2 3.2 2.2

Heated Floorspace

None............................................................... 3.6 1.0 0.8 0.5 0.5 0.7

Fewer than 500............................................... 6.1 3.0 1.6 0.6 0.6 0.3

500 to 999....................................................... 27.7 11.6 8.3 3.6 2.7 1.6

1,000 to 1,499................................................. 26.0 7.0 8.0 4.6 3.7 2.7

1,500 to 1,999................................................. 17.6 3.5 5.5 3.3 2.8 2.4

2,000 to 2,499................................................. 10.7 1.5 4.0 2.0 2.0 1.2

2,500 to 2,999................................................. 7.7 1.0 2.7 1.6 1.1 1.4

3,000 to 3,499................................................. 3.8 0.7 1.4 0.7 0.6 0.4

3,500 to 3,999................................................. 2.6 0.4 0.7 0.4 0.7 0.4

4,000 or More.................................................. 5.2 0.5 1.7 1.1 1.1 0.8

Centrally Cooled Floorspace

None............................................................... 45.2 14.8 12.2 7.7 5.9 4.7

Fewer than 500............................................... 3.9 1.6 1.3 0.5 0.3 0.3

500 to 999....................................................... 15.0 5.6 5.0 2.2 1.4 0.9

1,000 to 1,499................................................. 15.6 3.8 5.9 2.1 2.2 1.6

1,500 to 1,999................................................. 11.1 2.0 3.5 2.1 2.0 1.5

2,000 to 2,499................................................. 7.0 0.8 2.6 1.2 1.3 1.0

2,500 to 2,999................................................. 5.2 0.7 1.8 1.0 0.8 0.9

3,000 to 3,499................................................. 2.7 0.4 1.1 0.6 0.5 Q

3,500 to 3,999................................................. 1.8 Q 0.4 0.3 0.6 0.3

4,000 or More.................................................. 3.5 Q 1.1 0.8 0.7 0.6

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2.............................................................. 3.4 2.3 0.8 Q Q Q

3..................................................................... 8.6 5.1 2.1 0.8 0.4 Q

4..................................................................... 16.9 6.2 5.1 2.5 2.0 1.2

5..................................................................... 23.9 6.5 7.4 4.4 3.2 2.3

6..................................................................... 22.9 5.1 7.8 3.6 3.5 3.0

7..................................................................... 16.5 2.8 5.5 3.1 3.3 1.8

8..................................................................... 9.8 1.3 3.5 1.8 1.6 1.5

9 or More........................................................ 9.2 0.8 2.8 2.0 1.7 1.9

5 or More 

Members

 Million U.S. Housing Units

Housing 

Units 

(millions)

Number of Households With --

1

 Member

2

 Members

3

 Members

4

Living Space Characteristics Members

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC6.2 Living Space Characteristics by Number of Household Members, 2005

5 or More 

Members

 Million U.S. Housing Units

Housing 

Units 

(millions)

Number of Households With --

1

 Member

2

 Members

3

 Members

4

Living Space Characteristics Members

Bedrooms

None (Studio/Efficiency).................................. 1.9 1.4 0.4 Q Q Q

1..................................................................... 10.2 6.9 2.1 0.7 0.3 Q

2..................................................................... 28.7 9.7 9.9 4.6 2.9 1.6

3..................................................................... 47.5 9.6 16.1 8.7 8.0 5.1

4..................................................................... 18.4 2.3 5.2 3.5 3.7 3.7

5 or More........................................................ 4.3 Q 1.1 0.9 0.8 1.4

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency).................................. 1.9 1.4 0.4 Q Q Q

1..................................................................... 5.3 1.9 1.6 0.8 0.7 0.4

2..................................................................... 37.4 12.8 10.4 5.8 4.5 3.9

3..................................................................... 35.0 8.9 11.5 5.6 5.4 3.7

4..................................................................... 19.2 3.6 6.4 3.7 3.3 2.2

5 or More........................................................ 12.2 1.6 4.5 2.5 2.0 1.7

Full Bathrooms

None............................................................... 0.3 Q Q Q N N

1..................................................................... 54.9 19.9 15.9 8.4 6.2 4.6

2..................................................................... 45.9 9.0 15.5 7.7 7.8 5.8

3 or More........................................................ 9.9 1.0 3.4 2.1 1.9 1.6

Half Bathrooms

None............................................................... 79.4 24.6 24.5 12.4 10.2 7.8

1..................................................................... 29.7 5.2 9.7 5.6 5.4 3.9

2 or More........................................................ 2.0 0.3 0.7 0.4 Q 0.3

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes................................................................. 35.5 7.5 11.9 6.2 5.8 4.0

No................................................................... 51.9 12.3 17.0 8.9 7.3 6.5

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................ 23.7 10.3 5.9 3.3 2.7 1.5

Finished Basement

Yes.............................................................. 16.7 2.6 5.9 3.0 3.3 2.0

No............................................................... 18.7 4.9 6.1 3.2 2.6 2.0

No Basement.............................................. 51.9 12.3 17.0 8.9 7.3 6.5

Not Asked................................................... 23.7 10.3 5.9 3.3 2.7 1.5

Number of Finished Rooms

in Basement

1.................................................................. 8.1 1.4 3.0 1.2 1.6 0.9

2.................................................................. 3.8 0.6 1.3 0.6 0.8 0.5

3 or More..................................................... 4.8 0.6 1.6 1.1 0.9 0.6

None (Basement Unfinished)....................... 18.7 4.9 6.1 3.2 2.6 2.0

No Basement.............................................. 51.9 12.3 17.0 8.9 7.3 6.5

Not Asked................................................... 23.7 10.3 5.9 3.3 2.7 1.5

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC6.2 Living Space Characteristics by Number of Household Members, 2005

5 or More 

Members

 Million U.S. Housing Units

Housing 

Units 

(millions)

Number of Households With --

1

 Member

2

 Members

3

 Members

4

Living Space Characteristics Members

Heated Basement

Yes.............................................................. 20.7 3.9 7.4 3.6 3.4 2.4

All............................................................ 14.3 2.7 5.2 2.4 2.3 1.6

Part.......................................................... 6.4 1.2 2.2 1.2 1.1 0.8

None (Basement Not Heated)..................... 14.8 3.6 4.5 2.6 2.4 1.6

No Basement.............................................. 51.9 12.3 17.0 8.9 7.3 6.5

Not Asked................................................... 23.7 10.3 5.9 3.3 2.7 1.5

Air-Conditioned Basement

Yes.............................................................. 11.4 1.8 4.0 2.1 2.0 1.5

All............................................................ 8.4 1.3 3.0 1.6 1.4 1.1

Part.......................................................... 3.0 0.5 1.0 0.5 0.6 0.4

No (Basement Not Cooled)......................... 24.1 5.7 8.0 4.1 3.9 2.5

No Basement.............................................. 51.9 12.3 17.0 8.9 7.3 6.5

Not Asked................................................... 23.7 10.3 5.9 3.3 2.7 1.5

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes................................................................. 22.8 4.6 7.7 4.1 3.9 2.5

No................................................................... 64.6 15.1 21.2 11.0 9.2 8.0

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................ 23.7 10.3 5.9 3.3 2.7 1.5

Finished Attic

Yes.............................................................. 2.7 0.5 0.8 0.5 0.4 0.5

No............................................................... 20.1 4.1 6.9 3.7 3.5 2.0

No Attic....................................................... 64.6 15.1 21.2 11.0 9.2 8.0

Not Asked................................................... 23.7 10.3 5.9 3.3 2.7 1.5

Number of Finished Rooms in Attic

1.................................................................. 2.2 0.5 0.6 0.4 0.3 0.4

2 or More..................................................... 0.5 QQQQQ

None (Attic Unfinished)................................ 20.1 4.1 6.9 3.7 3.5 2.0

No Attic....................................................... 64.6 15.1 21.2 11.0 9.2 8.0

Not Asked................................................... 23.7 10.3 5.9 3.3 2.7 1.5

Heated Attic

Yes.............................................................. 1.3 Q 0.3 0.3 0.3 0.2

All............................................................ 1.0 Q Q Q 0.2 Q

Part.......................................................... 0.3 N QQQQ

No (Attic Not Heated).................................. 21.5 4.4 7.3 3.9 3.6 2.3

No Attic....................................................... 64.6 15.1 21.2 11.0 9.2 8.0

Not Asked................................................... 23.7 10.3 5.9 3.3 2.7 1.5

Air-Conditioned Attic

Yes.............................................................. 1.0 Q 0.3 Q Q Q

All............................................................ 0.7 QQQQQ

Part.......................................................... 0.3 QQQQQ

No (Attic Not Cooled).................................. 21.9 4.5 7.3 3.9 3.7 2.4

No Attic....................................................... 64.6 15.1 21.2 11.0 9.2 8.0

Not Asked................................................... 23.7 10.3 5.9 3.3 2.7 1.5

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC6.2 Living Space Characteristics by Number of Household Members, 2005

5 or More 

Members

 Million U.S. Housing Units

Housing 

Units 

(millions)

Number of Households With --

1

 Member

2

 Members

3

 Members

4

Living Space Characteristics Members

Garage/Carport

(Single-Family and Mobile Homes)

Yes..................................................................... 61.5 12.7 21.5 10.3 10.0 7.0

Attached......................................................... 41.8 7.2 15.0 7.5 7.2 5.0

1-Car Garage.............................................. 9.5 2.2 3.2 1.6 1.4 1.2

2-Car Garage.............................................. 28.4 4.7 10.2 5.2 5.2 3.1

3 or More Car Garage................................. 3.8 Q 1.6 0.7 0.7 0.6

Detached........................................................ 15.2 4.2 4.9 2.2 2.1 1.8

1-Car Garage.............................................. 6.1 2.0 1.7 0.9 0.6 0.8

2-Car Garage.............................................. 7.8 1.8 2.7 1.1 1.3 0.9

3 or More Car Garage................................. 1.4 0.3 0.5 Q Q Q

Carport (only).................................................. 4.7 1.4 1.7 0.6 0.7 0.3

No....................................................................... 25.1 6.9 7.1 4.4 3.3 3.5

Not Asked (All Apartments)................................ 24.5 10.5 6.3 3.7 2.5 1.5

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were 

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total........................................................... 111.1 26.7 28.8 20.6 13.1 22.0 16.6 38.6

Floorspace (Square Feet)

Total Floorspace

Fewer than 500................................... 3.1 1.8 0.9 Q Q Q 1.2 2.2

500 to 999........................................... 22.2 10.4 6.7 3.0 1.1 0.9 6.5 12.6

1,000 to 1,499..................................... 19.1 5.4 6.5 3.4 1.9 1.8 3.8 8.0

1,500 to 1,999..................................... 14.4 3.2 4.5 2.8 1.9 1.8 1.9 5.5

2,000 to 2,499..................................... 12.8 2.0 3.0 3.1 1.7 3.0 1.3 3.1

2,500 to 2,999..................................... 10.1 1.0 2.1 2.6 1.7 2.7 0.5 2.1

3,000 to 3,499..................................... 8.2 1.0 1.7 1.7 1.3 2.5 0.5 1.5

3,500 to 3,999..................................... 5.7 0.8 1.2 1.3 0.9 1.5 0.3 1.3

4,000 or More...................................... 15.7 1.1 2.3 2.5 2.4 7.4 0.7 2.3

Heated Floorspace

None................................................... 3.6 1.2 1.2 0.4 0.3 0.5 0.9 1.9

Fewer than 500................................... 6.1 2.9 1.7 0.8 0.3 0.5 1.7 3.5

500 to 999........................................... 27.7 11.7 8.5 4.1 1.7 1.6 7.2 14.4

1,000 to 1,499..................................... 26.0 6.3 7.8 5.7 2.8 3.4 4.0 9.4

1,500 to 1,999..................................... 17.6 2.5 4.8 3.9 2.6 3.8 1.4 4.9

2,000 to 2,499..................................... 10.7 0.9 2.1 2.3 2.1 3.4 0.6 1.8

2,500 to 2,999..................................... 7.7 0.5 1.3 1.6 1.6 2.8 0.3 1.1

3,000 to 3,499..................................... 3.8 0.4 0.6 0.7 0.5 1.7 0.3 0.5

3,500 to 3,999..................................... 2.6 Q 0.4 Q 0.5 1.4 Q 0.2

4,000 or More...................................... 5.2 0.4 0.4 0.9 0.7 2.9 Q 0.7

Centrally Cooled Floorspace

None................................................... 45.2 15.7 12.3 7.0 4.4 5.8 10.2 21.4

Fewer than 500................................... 3.9 1.2 1.3 0.7 0.5 Q 1.0 1.5

500 to 999........................................... 15.0 4.5 4.4 2.8 1.5 1.9 2.5 5.8

1,000 to 1,499..................................... 15.6 3.0 4.5 4.1 1.8 2.2 1.8 4.6

1,500 to 1,999..................................... 11.1 1.3 3.1 2.3 1.6 2.9 0.6 2.6

2,000 to 2,499..................................... 7.0 0.5 1.3 1.5 1.3 2.4 0.2 1.2

2,500 to 2,999..................................... 5.2 Q 0.9 0.9 0.9 2.2 Q 0.6

3,000 to 3,499..................................... 2.7 Q 0.3 0.6 0.4 1.2 Q 0.3

3,500 to 3,999..................................... 1.8 Q 0.3 Q 0.3 1.0 Q 0.2

4,000 or More...................................... 3.5 Q 0.3 0.5 0.4 2.2 Q 0.4

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2................................................... 3.4 1.9 0.8 0.4 Q Q 1.1 2.2

3.......................................................... 8.6 4.4 2.5 0.8 0.3 0.5 2.5 4.9

4.......................................................... 16.9 6.7 5.3 2.7 1.3 1.0 4.2 8.8

5.......................................................... 23.9 7.1 7.4 4.5 2.5 2.4 4.6 9.9

6.......................................................... 22.9 3.1 7.1 5.1 3.5 4.1 2.1 6.4

7.......................................................... 16.5 2.3 3.1 3.9 3.0 4.2 1.4 3.7

8.......................................................... 9.8 0.7 1.7 2.1 1.1 4.1 0.5 1.7

9 or More............................................. 9.2 0.5 0.9 1.1 1.3 5.4 0.3 1.0

$80,000 or 

More

Housing 

Units 

(millions)

2005 Household Income

Less than 

$20,000

$20,000 to 

$39,999

$40,000 to 

$59,999

$60,000 to 

$79,999

Table HC7.2 Living Space Characteristics by Household Income, 2005

Living Space Characteristics

Below 

Poverty 

Line

Eligible for 

Federal 

Assistance1

 Million U.S. Housing Units

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
$80,000 or 

More

Housing 

Units 

(millions)

2005 Household Income

Less than 

$20,000

$20,000 to 

$39,999

$40,000 to 

$59,999

$60,000 to 

$79,999

Table HC7.2 Living Space Characteristics by Household Income, 2005

Living Space Characteristics

Below 

Poverty 

Line

Eligible for 

Federal 

Assistance1

 Million U.S. Housing Units

Bedrooms

None (Studio/Efficiency)...................... 1.9 1.1 0.4 Q Q Q 0.6 1.3

1.......................................................... 10.2 5.5 2.9 1.0 0.5 0.4 3.2 5.9

2.......................................................... 28.7 9.9 9.3 4.7 2.5 2.4 6.2 13.4

3.......................................................... 47.5 8.0 12.6 10.4 7.0 9.4 5.1 13.1

4.......................................................... 18.4 1.9 3.0 3.5 2.5 7.5 1.2 4.0

5 or More............................................. 4.3 0.4 0.6 0.8 0.6 2.1 0.3 0.9

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency)...................... 1.9 1.1 0.4 Q Q Q 0.6 1.3

1.......................................................... 5.3 2.2 1.5 0.7 0.3 0.7 1.3 2.7

2.......................................................... 37.4 13.3 11.7 6.4 3.1 2.8 8.5 18.3

3.......................................................... 35.0 7.0 9.4 7.5 4.8 6.4 4.3 10.7

4.......................................................... 19.2 2.2 4.2 4.1 3.2 5.6 1.6 4.1

5 or More............................................. 12.2 1.0 1.6 1.7 1.6 6.4 0.5 1.5

Full Bathrooms

None................................................... 0.3 Q Q N Q N Q 0.3

1.......................................................... 54.9 20.5 16.7 8.6 4.5 4.6 12.5 27.6

2.......................................................... 45.9 5.8 11.2 10.4 6.6 11.8 3.8 10.0

3 or More............................................. 9.9 Q 0.8 1.5 1.9 5.6 0.2 0.7

Half Bathrooms

None................................................... 79.4 22.5 23.3 14.6 8.7 10.5 14.1 31.6

1.......................................................... 29.7 4.0 5.2 5.8 4.2 10.6 2.4 6.5

2 or More............................................. 2.0 0.3 0.3 0.2 Q 0.9 Q 0.5

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes...................................................... 35.5 5.9 7.8 6.9 4.7 10.1 3.3 9.9

No....................................................... 51.9 10.6 13.7 10.6 6.9 10.1 6.8 15.8

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)............ 23.7 10.2 7.3 3.0 1.5 1.7 6.5 12.8

Finished Basement

Yes.................................................. 16.7 1.9 3.0 3.1 2.5 6.3 1.0 3.4

No.................................................... 18.7 4.0 4.9 3.8 2.2 3.9 2.3 6.5

No Basement................................... 51.9 10.6 13.7 10.6 6.9 10.1 6.8 15.8

Not Asked........................................ 23.7 10.2 7.3 3.0 1.5 1.7 6.5 12.8

Number of Finished Rooms

in Basement

1...................................................... 8.1 1.1 1.5 1.6 1.4 2.6 0.6 1.9

2...................................................... 3.8 0.4 0.8 0.7 0.4 1.4 0.3 0.8

3 or More......................................... 4.8 0.3 0.7 0.8 0.7 2.2 Q 0.7

None (Basement Unfinished)........... 18.7 4.0 4.9 3.8 2.2 3.9 2.3 6.5

No Basement................................... 51.9 10.6 13.7 10.6 6.9 10.1 6.8 15.8

Not Asked........................................ 23.7 10.2 7.3 3.0 1.5 1.7 6.5 12.8

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
$80,000 or 

More

Housing 

Units 

(millions)

2005 Household Income

Less than 

$20,000

$20,000 to 

$39,999

$40,000 to 

$59,999

$60,000 to 

$79,999

Table HC7.2 Living Space Characteristics by Household Income, 2005

Living Space Characteristics

Below 

Poverty 

Line

Eligible for 

Federal 

Assistance1

 Million U.S. Housing Units

Heated Basement

Yes.................................................. 20.7 2.8 4.2 4.0 3.1 6.6 1.5 4.9

All................................................ 14.3 1.9 3.0 2.8 2.2 4.4 1.0 3.4

Part.............................................. 6.4 0.9 1.2 1.2 1.0 2.2 0.5 1.5

None (Basement Not Heated).......... 14.8 3.1 3.6 2.9 1.6 3.5 1.8 5.1

No Basement................................... 51.9 10.6 13.7 10.6 6.9 10.1 6.8 15.8

Not Asked........................................ 23.7 10.2 7.3 3.0 1.5 1.7 6.5 12.8

Air-Conditioned Basement

Yes.................................................. 11.4 1.1 2.1 2.1 1.7 4.4 0.4 2.2

All................................................ 8.4 0.7 1.7 1.5 1.4 3.1 0.4 1.7

Part.............................................. 3.0 0.4 0.4 0.6 0.3 1.3 Q 0.6

No (Basement Not Cooled).............. 24.1 4.9 5.8 4.8 3.0 5.7 2.9 7.7

No Basement................................... 51.9 10.6 13.7 10.6 6.9 10.1 6.8 15.8

Not Asked........................................ 23.7 10.2 7.3 3.0 1.5 1.7 6.5 12.8

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes...................................................... 22.8 3.2 4.8 4.9 3.0 6.9 1.9 5.5

No....................................................... 64.6 13.3 16.7 12.6 8.5 13.3 8.2 20.2

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)............ 23.7 10.2 7.3 3.0 1.5 1.7 6.5 12.8

Finished Attic

Yes.................................................. 2.7 0.5 0.7 0.7 0.2 0.7 0.4 0.9

No.................................................... 20.1 2.8 4.1 4.2 2.8 6.2 1.6 4.7

No Attic............................................ 64.6 13.3 16.7 12.6 8.5 13.3 8.2 20.2

Not Asked........................................ 23.7 10.2 7.3 3.0 1.5 1.7 6.5 12.8

Number of Finished Rooms in Attic

1...................................................... 2.2 0.4 0.5 0.5 0.2 0.6 0.3 0.7

2 or More......................................... 0.5 Q Q Q N Q Q 0.2

None (Attic Unfinished).................... 20.1 2.8 4.1 4.2 2.8 6.2 1.6 4.7

No Attic............................................ 64.6 13.3 16.7 12.6 8.5 13.3 8.2 20.2

Not Asked........................................ 23.7 10.2 7.3 3.0 1.5 1.7 6.5 12.8

Heated Attic

Yes.................................................. 1.3 0.3 0.3 Q Q 0.4 0.2 0.5

All................................................ 1.0 0.2 0.3 Q Q 0.3 Q 0.4

Part.............................................. 0.3 QQQQQQ Q

No (Attic Not Heated)...................... 21.5 3.0 4.5 4.7 2.9 6.5 1.7 5.0

No Attic............................................ 64.6 13.3 16.7 12.6 8.5 13.3 8.2 20.2

Not Asked........................................ 23.7 10.2 7.3 3.0 1.5 1.7 6.5 12.8

Air-Conditioned Attic

Yes.................................................. 1.0 Q 0.2 Q Q 0.3 Q 0.2

All................................................ 0.7 QQQQQQ Q

Part.............................................. 0.3 N QQQQN Q

No (Attic Not Cooled)....................... 21.9 3.2 4.6 4.6 2.9 6.6 1.9 5.3

No Attic............................................ 64.6 13.3 16.7 12.6 8.5 13.3 8.2 20.2

Not Asked........................................ 23.7 10.2 7.3 3.0 1.5 1.7 6.5 12.8

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
$80,000 or 

More

Housing 

Units 

(millions)

2005 Household Income

Less than 

$20,000

$20,000 to 

$39,999

$40,000 to 

$59,999

$60,000 to 

$79,999

Table HC7.2 Living Space Characteristics by Household Income, 2005

Living Space Characteristics

Below 

Poverty 

Line

Eligible for 

Federal 

Assistance1

 Million U.S. Housing Units

Garage/Carport

(Single-Family and Mobile Homes)

Yes......................................................... 61.5 8.6 13.6 12.8 9.1 17.4 4.6 13.7

Attached.............................................. 41.8 4.0 7.9 8.8 6.8 14.2 2.1 7.0

1-Car Garage................................... 9.5 1.9 2.5 2.2 1.2 1.8 1.0 2.8

2-Car Garage................................... 28.4 2.1 5.2 6.3 5.1 9.7 1.2 4.1

3 or More Car Garage...................... 3.8 Q 0.3 0.4 0.4 2.7 N Q

Detached............................................. 15.2 3.2 3.9 3.3 2.0 2.7 1.8 4.8

1-Car Garage................................... 6.1 1.9 1.7 1.1 0.7 0.7 1.1 2.6

2-Car Garage................................... 7.8 1.1 1.8 2.0 1.0 1.8 0.7 1.9

3 or More Car Garage...................... 1.4 Q 0.4 0.3 0.3 Q Q 0.3

Carport (only)...................................... 4.7 1.3 1.8 0.8 0.3 0.4 0.6 1.9

No........................................................... 25.1 7.9 8.0 4.3 2.4 2.5 5.2 11.8

Not Asked (All Apartments)..................... 24.5 10.3 7.2 3.4 1.6 2.1 6.9 13.1

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total.......................................................................... 111.1 47.1 19.0 22.7 22.3

Floorspace (Square Feet)

Total Floorspace

Fewer than 500................................................... 3.1 2.0 0.5 Q 0.3

500 to 999........................................................... 22.2 12.8 3.6 2.6 3.2

1,000 to 1,499..................................................... 19.1 8.9 3.2 3.0 4.0

1,500 to 1,999..................................................... 14.4 6.4 2.6 2.3 3.1

2,000 to 2,499..................................................... 12.8 5.3 2.1 2.7 2.5

2,500 to 2,999..................................................... 10.1 3.5 1.9 2.8 2.0

3,000 to 3,499..................................................... 8.2 2.7 1.4 2.1 2.0

3,500 to 3,999..................................................... 5.7 1.9 1.0 1.6 1.2

4,000 or More..................................................... 15.7 3.5 2.6 5.3 4.2

Heated Floorspace

None................................................................... 3.6 2.4 0.3 0.4 0.4

Fewer than 500................................................... 6.1 3.9 0.9 0.5 0.8

500 to 999........................................................... 27.7 14.3 5.0 4.1 4.4

1,000 to 1,499..................................................... 26.0 11.8 4.5 4.5 5.2

1,500 to 1,999..................................................... 17.6 6.8 3.3 3.2 4.3

2,000 to 2,499..................................................... 10.7 3.1 2.1 3.2 2.3

2,500 to 2,999..................................................... 7.7 2.2 1.1 2.9 1.5

3,000 to 3,499..................................................... 3.8 0.9 0.6 1.3 1.0

3,500 to 3,999..................................................... 2.6 0.7 0.3 0.8 0.7

4,000 or More..................................................... 5.2 1.0 0.7 1.7 1.7

Centrally Cooled Floorspace

None................................................................... 45.2 21.3 8.0 6.1 9.8

Fewer than 500................................................... 3.9 2.1 0.8 0.6 0.5

500 to 999........................................................... 15.0 7.5 2.6 3.0 2.0

1,000 to 1,499..................................................... 15.6 6.7 2.7 3.3 2.8

1,500 to 1,999..................................................... 11.1 4.5 1.9 2.3 2.4

2,000 to 2,499..................................................... 7.0 1.8 1.2 2.6 1.4

2,500 to 2,999..................................................... 5.2 1.6 0.6 2.0 1.0

3,000 to 3,499..................................................... 2.7 0.5 0.4 1.0 0.9

3,500 to 3,999..................................................... 1.8 0.4 0.3 0.6 0.5

4,000 or More..................................................... 3.5 0.8 0.4 1.3 1.0

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2.................................................................. 3.4 2.1 0.6 0.5 Q

3......................................................................... 8.6 5.4 1.2 1.0 0.9

4......................................................................... 16.9 8.8 3.2 2.1 2.9

5......................................................................... 23.9 10.4 4.3 3.9 5.2

6......................................................................... 22.9 9.7 3.7 4.2 5.3

7......................................................................... 16.5 5.6 3.1 4.0 3.7

8......................................................................... 9.8 2.8 1.2 3.2 2.5

9 or More............................................................ 9.2 2.2 1.6 3.7 1.7

Table HC8.2 Living Space Characteristics by Urban/Rural Location, 2005

City Town Surburbs Rural

 Million U.S. Housing Units

Housing

Units 

(millions)

Urban/Rural Location

(as Self-Reported)

Living Space Characteristics

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC8.2 Living Space Characteristics by Urban/Rural Location, 2005

City Town Surburbs Rural

 Million U.S. Housing Units

Housing

Units 

(millions)

Urban/Rural Location

(as Self-Reported)

Living Space Characteristics

Bedrooms

None (Studio/Efficiency)..................................... 1.9 1.4 0.3 Q Q

1......................................................................... 10.2 6.3 1.6 1.3 1.0

2......................................................................... 28.7 14.3 5.7 3.9 4.7

3......................................................................... 47.5 18.4 7.7 9.3 12.1

4......................................................................... 18.4 5.5 2.9 6.3 3.7

5 or More............................................................ 4.3 1.2 0.8 1.6 0.8

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency)..................................... 1.9 1.4 0.3 Q Q

1......................................................................... 5.3 2.5 0.9 0.9 1.0

2......................................................................... 37.4 18.2 6.5 5.3 7.3

3......................................................................... 35.0 15.6 6.0 6.8 6.7

4......................................................................... 19.2 6.1 3.4 5.5 4.2

5 or More............................................................ 12.2 3.4 1.9 3.9 3.0

Full Bathrooms

None................................................................... 0.3 Q N N Q

1......................................................................... 54.9 27.8 10.5 7.6 9.1

2......................................................................... 45.9 16.9 7.1 11.3 10.7

3 or More............................................................ 9.9 2.3 1.3 3.8 2.5

Half Bathrooms

None................................................................... 79.4 35.3 13.7 13.6 16.8

1......................................................................... 29.7 11.1 4.9 8.5 5.2

2 or More............................................................ 2.0 0.8 0.4 0.5 0.3

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes..................................................................... 35.5 12.0 7.4 8.7 7.3

No....................................................................... 51.9 22.1 8.1 10.7 11.0

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 13.0 3.4 3.2 4.1

Finished Basement

Yes................................................................. 16.7 5.5 3.1 5.1 3.0

No................................................................... 18.7 6.5 4.4 3.6 4.3

No Basement.................................................. 51.9 22.1 8.1 10.7 11.0

Not Asked....................................................... 23.7 13.0 3.4 3.2 4.1

Number of Finished Rooms

in Basement

1...................................................................... 8.1 3.0 1.4 2.5 1.2

2...................................................................... 3.8 1.2 0.8 1.3 0.4

3 or More......................................................... 4.8 1.3 0.9 1.3 1.3

None (Basement Unfinished).......................... 18.7 6.5 4.4 3.6 4.3

No Basement.................................................. 51.9 22.1 8.1 10.7 11.0

Not Asked....................................................... 23.7 13.0 3.4 3.2 4.1

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC8.2 Living Space Characteristics by Urban/Rural Location, 2005

City Town Surburbs Rural

 Million U.S. Housing Units

Housing

Units 

(millions)

Urban/Rural Location

(as Self-Reported)

Living Space Characteristics

Heated Basement

Yes................................................................. 20.7 6.4 4.0 5.9 4.3

All................................................................ 14.3 4.3 2.8 4.1 3.1

Part............................................................. 6.4 2.1 1.2 1.9 1.2

None (Basement Not Heated)......................... 14.8 5.6 3.4 2.8 3.0

No Basement.................................................. 51.9 22.1 8.1 10.7 11.0

Not Asked....................................................... 23.7 13.0 3.4 3.2 4.1

Air-Conditioned Basement

Yes................................................................. 11.4 3.0 2.3 4.0 2.1

All................................................................ 8.4 2.0 1.7 3.1 1.6

Part............................................................. 3.0 0.9 0.6 1.0 0.4

No (Basement Not Cooled)............................. 24.1 9.1 5.1 4.7 5.2

No Basement.................................................. 51.9 22.1 8.1 10.7 11.0

Not Asked....................................................... 23.7 13.0 3.4 3.2 4.1

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes..................................................................... 22.8 8.1 4.5 6.0 4.3

No....................................................................... 64.6 26.0 11.1 13.5 14.0

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 13.0 3.4 3.2 4.1

Finished Attic

Yes................................................................. 2.7 1.0 0.4 0.9 0.4

No................................................................... 20.1 7.1 4.1 5.1 3.9

No Attic........................................................... 64.6 26.0 11.1 13.5 14.0

Not Asked....................................................... 23.7 13.0 3.4 3.2 4.1

Number of Finished Rooms in Attic

1...................................................................... 2.2 0.8 0.3 0.8 0.4

2 or More......................................................... 0.5 0.3 Q Q Q

None (Attic Unfinished)................................... 20.1 7.1 4.1 5.1 3.9

No Attic........................................................... 64.6 26.0 11.1 13.5 14.0

Not Asked....................................................... 23.7 13.0 3.4 3.2 4.1

Heated Attic

Yes................................................................. 1.3 0.5 0.2 0.2 0.3

All................................................................ 1.0 0.4 Q Q 0.3

Part............................................................. 0.3 Q Q Q N

No (Attic Not Heated)...................................... 21.5 7.6 4.2 5.7 4.0

No Attic........................................................... 64.6 26.0 11.1 13.5 14.0

Not Asked....................................................... 23.7 13.0 3.4 3.2 4.1

Air-Conditioned Attic

Yes................................................................. 1.0 0.4 Q Q 0.3

All................................................................ 0.7 QQQQ

Part............................................................. 0.3 QQQQ

No (Attic Not Cooled)...................................... 21.9 7.8 4.4 5.7 4.0

No Attic........................................................... 64.6 26.0 11.1 13.5 14.0

Not Asked....................................................... 23.7 13.0 3.4 3.2 4.1

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC8.2 Living Space Characteristics by Urban/Rural Location, 2005

City Town Surburbs Rural

 Million U.S. Housing Units

Housing

Units 

(millions)

Urban/Rural Location

(as Self-Reported)

Living Space Characteristics

Garage/Carport

(Single-Family and Mobile Homes)

Yes......................................................................... 61.5 21.2 10.5 16.3 13.5

Attached............................................................. 41.8 14.0 6.8 13.1 7.8

1-Car Garage.................................................. 9.5 3.8 1.9 2.0 1.8

2-Car Garage.................................................. 28.4 9.4 4.4 9.4 5.2

3 or More Car Garage..................................... 3.8 0.8 0.5 1.8 0.8

Detached............................................................ 15.2 5.6 2.8 2.6 4.2

1-Car Garage.................................................. 6.1 2.8 1.2 1.0 1.1

2-Car Garage.................................................. 7.8 2.4 1.3 1.4 2.6

3 or More Car Garage..................................... 1.4 0.3 0.3 Q 0.6

Carport (only)...................................................... 4.7 1.6 0.9 0.6 1.6

No.......................................................................... 25.1 9.6 4.4 2.9 8.3

Not Asked (All Apartments).................................... 24.5 16.3 4.1 3.5 0.6

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households

were sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total......................................................................... 111.1 10.9 26.1 27.3 24.0 22.8

Floorspace (Square Feet)

Total Floorspace

Fewer than 500.................................................. 3.1 Q 0.8 0.9 0.8 0.4

500 to 999.......................................................... 22.2 1.4 5.0 5.3 5.3 5.1

1,000 to 1,499.................................................... 19.1 1.4 3.8 4.8 4.7 4.3

1,500 to 1,999.................................................... 14.4 1.3 2.9 3.5 3.4 3.2

2,000 to 2,499.................................................... 12.8 1.3 3.0 2.9 2.4 3.2

2,500 to 2,999.................................................... 10.1 1.2 2.5 2.6 2.2 1.6

3,000 to 3,499.................................................... 8.2 0.9 2.3 2.0 1.6 1.4

3,500 to 3,999.................................................... 5.7 1.1 1.5 1.4 0.8 0.9

4,000 or More..................................................... 15.7 2.1 4.3 3.9 2.7 2.6

Heated Floorspace

None.................................................................. 3.6 Q 0.5 Q 1.4 1.4

Fewer than 500.................................................. 6.1 0.2 1.2 1.5 1.9 1.2

500 to 999.......................................................... 27.7 2.3 6.9 6.5 6.5 5.6

1,000 to 1,499.................................................... 26.0 1.9 5.3 6.4 6.1 6.4

1,500 to 1,999.................................................... 17.6 1.9 4.0 4.5 3.3 3.9

2,000 to 2,499.................................................... 10.7 1.3 2.6 3.1 1.9 1.8

2,500 to 2,999.................................................... 7.7 1.1 2.1 1.6 1.5 1.4

3,000 to 3,499.................................................... 3.8 0.6 1.2 1.1 0.5 0.4

3,500 to 3,999.................................................... 2.6 0.6 0.9 0.7 Q Q

4,000 or More..................................................... 5.2 1.0 1.3 1.7 0.6 0.6

Centrally Cooled Floorspace

None.................................................................. 45.2 6.2 13.7 12.2 9.0 4.1

Fewer than 500.................................................. 3.9 Q 0.7 0.6 1.2 1.2

500 to 999.......................................................... 15.0 0.7 2.6 2.8 4.3 4.7

1,000 to 1,499.................................................... 15.6 0.8 2.7 3.3 4.0 4.8

1,500 to 1,999.................................................... 11.1 0.7 2.2 2.4 2.1 3.8

2,000 to 2,499.................................................... 7.0 0.8 1.2 1.9 1.3 1.8

2,500 to 2,999.................................................... 5.2 0.5 1.1 1.4 1.0 1.2

3,000 to 3,499.................................................... 2.7 0.3 0.7 0.9 0.4 0.4

3,500 to 3,999.................................................... 1.8 0.3 0.4 0.6 0.3 Q

4,000 or More..................................................... 3.5 0.4 0.9 1.1 0.5 0.6

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2.................................................................. 3.4 0.2 0.9 0.9 0.7 0.6

3......................................................................... 8.6 0.5 1.9 2.2 2.1 1.8

4......................................................................... 16.9 1.6 3.7 4.2 3.6 3.9

5......................................................................... 23.9 2.1 5.8 5.5 5.4 5.1

6......................................................................... 22.9 2.4 4.8 5.3 5.3 5.1

7......................................................................... 16.5 1.7 3.7 4.1 3.6 3.3

8......................................................................... 9.8 1.2 2.4 2.7 1.8 1.7

9 or More............................................................ 9.2 1.2 2.7 2.4 1.5 1.3

Table HC9.2 Living Space Characteristics by Climate Zone, 2005

 Million U.S. Housing Units

Climate Zone1

Less than 2,000 CDD and -- 2,000 CDD 

or More

and Less 

than 4,000 

HDD

Greater than 

7,000 HDD

5,500 to 

Living Space Characteristics 7,000 HDD

4,000 to 

5,499 HDD

Housing 

Units 

(millions)

Less than 

4,000 HDD

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC9.2 Living Space Characteristics by Climate Zone, 2005

 Million U.S. Housing Units

Climate Zone1

Less than 2,000 CDD and -- 2,000 CDD 

or More

and Less 

than 4,000 

HDD

Greater than 

7,000 HDD

5,500 to 

Living Space Characteristics 7,000 HDD

4,000 to 

5,499 HDD

Housing 

Units 

(millions)

Less than 

4,000 HDD

Bedrooms

None (Studio/Efficiency)..................................... 1.9 Q 0.6 0.6 0.4 0.3

1......................................................................... 10.2 0.6 2.4 2.7 2.4 2.2

2......................................................................... 28.7 2.8 7.2 7.0 6.1 5.6

3......................................................................... 47.5 4.5 10.6 11.4 10.4 10.6

4......................................................................... 18.4 2.3 4.2 4.6 3.8 3.5

5 or More............................................................ 4.3 0.6 1.1 1.1 0.9 0.7

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency)..................................... 1.9 Q 0.6 0.6 0.4 0.3

1......................................................................... 5.3 0.6 1.0 1.0 1.3 1.3

2......................................................................... 37.4 3.1 8.3 9.1 8.8 8.0

3......................................................................... 35.0 3.5 7.7 8.2 7.8 7.8

4......................................................................... 19.2 2.2 5.2 4.9 3.5 3.4

5 or More............................................................ 12.2 1.4 3.3 3.4 2.2 1.9

Full Bathrooms

None.................................................................. 0.3 Q Q Q Q N

1......................................................................... 54.9 5.6 15.9 15.1 10.2 8.1

2......................................................................... 45.9 4.1 8.3 9.5 11.2 12.8

3 or More............................................................ 9.9 1.2 1.7 2.7 2.5 1.9

Half Bathrooms

None.................................................................. 79.4 7.1 18.3 18.4 17.5 18.1

1......................................................................... 29.7 3.5 7.4 8.3 6.1 4.5

2 or More............................................................ 2.0 0.3 0.5 0.6 0.4 Q

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes.................................................................... 35.5 7.1 14.1 11.5 2.5 0.3

No...................................................................... 51.9 2.2 6.8 9.7 16.0 17.1

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 1.6 5.2 6.0 5.5 5.4

Finished Basement

Yes................................................................. 16.7 3.5 5.7 6.4 1.2 Q

No.................................................................. 18.7 3.6 8.4 5.2 1.3 Q

No Basement................................................. 51.9 2.2 6.8 9.7 16.0 17.1

Not Asked....................................................... 23.7 1.6 5.2 6.0 5.5 5.4

Number of Finished Rooms

in Basement

1..................................................................... 8.1 1.3 3.1 3.3 0.4 N

2..................................................................... 3.8 0.9 1.4 1.2 0.3 Q

3 or More........................................................ 4.8 1.3 1.3 1.8 0.4 Q

None (Basement Unfinished).......................... 18.7 3.6 8.4 5.2 1.3 Q

No Basement................................................. 51.9 2.2 6.8 9.7 16.0 17.1

Not Asked....................................................... 23.7 1.6 5.2 6.0 5.5 5.4

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC9.2 Living Space Characteristics by Climate Zone, 2005

 Million U.S. Housing Units

Climate Zone1

Less than 2,000 CDD and -- 2,000 CDD 

or More

and Less 

than 4,000 

HDD

Greater than 

7,000 HDD

5,500 to 

Living Space Characteristics 7,000 HDD

4,000 to 

5,499 HDD

Housing 

Units 

(millions)

Less than 

4,000 HDD

Heated Basement

Yes................................................................. 20.7 4.6 7.6 7.6 0.9 Q

All............................................................... 14.3 3.2 5.1 5.4 0.5 Q

Part............................................................. 6.4 1.4 2.5 2.2 0.3 N

None (Basement Not Heated)........................ 14.8 2.4 6.5 3.9 1.6 0.3

No Basement................................................. 51.9 2.2 6.8 9.7 16.0 17.1

Not Asked....................................................... 23.7 1.6 5.2 6.0 5.5 5.4

Air-Conditioned Basement

Yes................................................................. 11.4 2.2 3.5 5.0 0.6 Q

All............................................................... 8.4 1.6 2.8 3.7 0.4 Q

Part............................................................. 3.0 0.6 0.8 1.3 Q N

No (Basement Not Cooled)............................. 24.1 4.8 10.5 6.6 1.9 0.3

No Basement................................................. 51.9 2.2 6.8 9.7 16.0 17.1

Not Asked....................................................... 23.7 1.6 5.2 6.0 5.5 5.4

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes.................................................................... 22.8 1.1 5.8 5.0 5.2 5.7

No...................................................................... 64.6 8.2 15.1 16.2 13.3 11.8

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 1.6 5.2 6.0 5.5 5.4

Finished Attic

Yes................................................................. 2.7 0.2 0.8 0.7 0.5 0.6

No.................................................................. 20.1 0.9 5.0 4.4 4.7 5.1

No Attic.......................................................... 64.6 8.2 15.1 16.2 13.3 11.8

Not Asked....................................................... 23.7 1.6 5.2 6.0 5.5 5.4

Number of Finished Rooms in Attic

1..................................................................... 2.2 0.2 0.6 0.5 0.4 0.5

2 or More........................................................ 0.5 N 0.2 Q Q Q

None (Attic Unfinished)................................... 20.1 0.9 5.0 4.4 4.7 5.1

No Attic.......................................................... 64.6 8.2 15.1 16.2 13.3 11.8

Not Asked....................................................... 23.7 1.6 5.2 6.0 5.5 5.4

Heated Attic

Yes................................................................. 1.3 Q 0.5 0.4 Q Q

All............................................................... 1.0 Q 0.4 0.3 Q Q

Part............................................................. 0.3 N Q Q N Q

No (Attic Not Heated)..................................... 21.5 1.0 5.3 4.6 5.1 5.4

No Attic.......................................................... 64.6 8.2 15.1 16.2 13.3 11.8

Not Asked....................................................... 23.7 1.6 5.2 6.0 5.5 5.4

Air-Conditioned Attic

Yes................................................................. 1.0 Q 0.3 0.3 Q Q

All............................................................... 0.7 Q 0.2 Q Q Q

Part............................................................. 0.3 N Q Q Q Q

No (Attic Not Cooled)...................................... 21.9 1.0 5.5 4.7 5.1 5.5

No Attic.......................................................... 64.6 8.2 15.1 16.2 13.3 11.8

Not Asked....................................................... 23.7 1.6 5.2 6.0 5.5 5.4

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC9.2 Living Space Characteristics by Climate Zone, 2005

 Million U.S. Housing Units

Climate Zone1

Less than 2,000 CDD and -- 2,000 CDD 

or More

and Less 

than 4,000 

HDD

Greater than 

7,000 HDD

5,500 to 

Living Space Characteristics 7,000 HDD

4,000 to 

5,499 HDD

Housing 

Units 

(millions)

Less than 

4,000 HDD

Garage/Carport

(Single-Family and Mobile Homes)

Yes........................................................................ 61.5 7.5 14.4 12.5 13.7 13.3

Attached............................................................. 41.8 4.8 8.8 8.7 9.9 9.5

1-Car Garage................................................. 9.5 0.9 2.5 2.6 2.1 1.4

2-Car Garage................................................. 28.4 3.2 5.7 5.5 6.8 7.2

3 or More Car Garage..................................... 3.8 0.7 0.7 0.5 1.1 0.8

Detached........................................................... 15.2 2.6 5.1 3.2 2.6 1.7

1-Car Garage................................................. 6.1 1.0 2.0 1.5 0.8 0.7

2-Car Garage................................................. 7.8 1.2 2.8 1.3 1.7 0.7

3 or More Car Garage..................................... 1.4 0.4 0.3 0.4 Q 0.3

Carport (only)..................................................... 4.7 Q 0.5 0.6 1.3 2.1

No.......................................................................... 25.1 2.0 5.4 7.7 5.2 4.8

Not Asked (All Apartments)................................... 24.5 1.4 6.3 7.1 5.1 4.6

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and cooling 

degree-days. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby 

weather station.

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were 

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total.......................................................................... 111.1 20.6 25.6 40.7 24.2

Floorspace (Square Feet)

Total Floorspace

Fewer than 500................................................... 3.1 0.9 0.5 0.8 0.9

500 to 999........................................................... 22.2 4.6 3.5 8.5 5.6

1,000 to 1,499..................................................... 19.1 2.6 4.2 8.0 4.4

1,500 to 1,999..................................................... 14.4 1.9 3.4 5.3 3.7

2,000 to 2,499..................................................... 12.8 2.1 3.1 4.6 2.9

2,500 to 2,999..................................................... 10.1 2.2 2.5 3.2 2.2

3,000 to 3,499..................................................... 8.2 1.7 2.3 2.3 2.0

3,500 to 3,999..................................................... 5.7 1.2 2.0 1.7 0.8

4,000 or More..................................................... 15.7 3.5 4.2 6.2 1.7

Heated Floorspace

None................................................................... 3.6 Q 0.5 0.8 2.1

Fewer than 500................................................... 6.1 1.3 0.9 1.9 2.1

500 to 999........................................................... 27.7 5.6 5.7 10.5 6.0

1,000 to 1,499..................................................... 26.0 4.3 5.2 11.3 5.2

1,500 to 1,999..................................................... 17.6 3.0 3.9 6.8 3.9

2,000 to 2,499..................................................... 10.7 2.2 2.8 3.7 2.0

2,500 to 2,999..................................................... 7.7 1.6 2.2 2.3 1.6

3,000 to 3,499..................................................... 3.8 0.8 1.5 1.0 0.4

3,500 to 3,999..................................................... 2.6 0.6 1.1 0.6 0.3

4,000 or More..................................................... 5.2 1.0 1.9 1.7 0.6

Centrally Cooled Floorspace

None................................................................... 45.2 14.6 8.3 8.6 13.7

Fewer than 500................................................... 3.9 Q 0.8 2.0 1.0

500 to 999........................................................... 15.0 1.1 3.0 7.7 3.2

1,000 to 1,499..................................................... 15.6 1.2 3.9 8.2 2.3

1,500 to 1,999..................................................... 11.1 1.3 2.4 5.7 1.7

2,000 to 2,499..................................................... 7.0 0.5 2.3 3.3 0.8

2,500 to 2,999..................................................... 5.2 0.6 1.7 2.1 0.8

3,000 to 3,499..................................................... 2.7 0.4 1.1 1.0 Q

3,500 to 3,999..................................................... 1.8 0.2 0.8 0.6 Q

4,000 or More..................................................... 3.5 0.4 1.4 1.4 0.3

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2.................................................................. 3.4 0.9 0.9 0.6 1.1

3......................................................................... 8.6 1.9 1.3 3.3 2.2

4......................................................................... 16.9 3.4 3.3 6.6 3.7

5......................................................................... 23.9 3.8 5.7 9.1 5.2

6......................................................................... 22.9 3.8 5.3 9.0 4.9

7......................................................................... 16.5 2.9 3.9 6.0 3.6

8......................................................................... 9.8 1.8 2.7 3.3 2.0

9 or More............................................................ 9.2 2.1 2.6 2.9 1.5

Housing

Units 

(millions)

U.S. Census Region

Living Space Characteristics

Table HC10.2 Living Space Characteristics by U.S. Census Region, 2005

Northeast Midwest South West

 Million U.S. Housing Units

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Housing

Units 

(millions)

U.S. Census Region

Living Space Characteristics

Table HC10.2 Living Space Characteristics by U.S. Census Region, 2005

Northeast Midwest South West

 Million U.S. Housing Units

Bedrooms

None (Studio/Efficiency)..................................... 1.9 0.5 0.4 0.4 0.6

1......................................................................... 10.2 2.5 1.6 3.7 2.3

2......................................................................... 28.7 6.0 6.8 9.7 6.2

3......................................................................... 47.5 7.1 11.2 19.1 10.2

4......................................................................... 18.4 3.4 4.6 6.4 3.9

5 or More............................................................ 4.3 1.0 1.0 1.3 1.0

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency)..................................... 1.9 0.5 0.4 0.4 0.6

1......................................................................... 5.3 0.7 1.1 2.1 1.4

2......................................................................... 37.4 6.8 7.4 14.0 9.2

3......................................................................... 35.0 5.8 8.3 14.0 6.9

4......................................................................... 19.2 4.1 5.0 5.9 4.2

5 or More............................................................ 12.2 2.7 3.4 4.3 1.9

Full Bathrooms

None................................................................... 0.3 QQQQ

1......................................................................... 54.9 13.9 14.7 16.1 10.2

2......................................................................... 45.9 5.4 8.5 20.7 11.3

3 or More............................................................ 9.9 1.2 2.3 3.9 2.5

Half Bathrooms

None................................................................... 79.4 14.1 17.2 30.5 17.6

1......................................................................... 29.7 6.1 7.8 9.6 6.2

2 or More............................................................ 2.0 0.4 0.7 0.6 0.4

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes..................................................................... 35.5 11.7 14.7 5.9 3.2

No....................................................................... 51.9 4.3 7.0 25.1 15.4

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 4.6 3.9 9.6 5.6

Finished Basement

Yes................................................................. 16.7 4.4 7.2 3.1 1.9

No................................................................... 18.7 7.2 7.5 2.8 1.2

No Basement.................................................. 51.9 4.3 7.0 25.1 15.4

Not Asked....................................................... 23.7 4.6 3.9 9.6 5.6

Number of Finished Rooms

in Basement

1...................................................................... 8.1 2.9 3.2 1.5 0.6

2...................................................................... 3.8 0.9 1.9 0.6 0.4

3 or More......................................................... 4.8 0.6 2.1 1.1 0.9

None (Basement Unfinished).......................... 18.7 7.2 7.5 2.8 1.2

No Basement.................................................. 51.9 4.3 7.0 25.1 15.4

Not Asked....................................................... 23.7 4.6 3.9 9.6 5.6

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Housing

Units 

(millions)

U.S. Census Region

Living Space Characteristics

Table HC10.2 Living Space Characteristics by U.S. Census Region, 2005

Northeast Midwest South West

 Million U.S. Housing Units

Heated Basement

Yes................................................................. 20.7 5.3 10.1 3.3 1.9

All................................................................ 14.3 3.5 7.3 2.4 1.2

Part............................................................. 6.4 1.8 2.9 1.0 0.7

None (Basement Not Heated)......................... 14.8 6.3 4.6 2.6 1.3

No Basement.................................................. 51.9 4.3 7.0 25.1 15.4

Not Asked....................................................... 23.7 4.6 3.9 9.6 5.6

Air-Conditioned Basement

Yes................................................................. 11.4 1.7 6.6 2.3 0.7

All................................................................ 8.4 1.1 5.2 1.7 0.5

Part............................................................. 3.0 0.7 1.5 0.6 Q

No (Basement Not Cooled)............................. 24.1 9.9 8.1 3.6 2.5

No Basement.................................................. 51.9 4.3 7.0 25.1 15.4

Not Asked....................................................... 23.7 4.6 3.9 9.6 5.6

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes..................................................................... 22.8 5.6 4.1 10.9 2.2

No....................................................................... 64.6 10.4 17.6 20.2 16.4

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 4.6 3.9 9.6 5.6

Finished Attic

Yes................................................................. 2.7 0.8 0.6 1.1 0.3

No................................................................... 20.1 4.8 3.5 9.8 2.0

No Attic........................................................... 64.6 10.4 17.6 20.2 16.4

Not Asked....................................................... 23.7 4.6 3.9 9.6 5.6

Number of Finished Rooms in Attic

1...................................................................... 2.2 0.6 0.4 1.0 Q

2 or More......................................................... 0.5 QQQQ

None (Attic Unfinished)................................... 20.1 4.8 3.5 9.8 2.0

No Attic........................................................... 64.6 10.4 17.6 20.2 16.4

Not Asked....................................................... 23.7 4.6 3.9 9.6 5.6

Heated Attic

Yes................................................................. 1.3 0.4 0.4 0.4 Q

All................................................................ 1.0 0.3 0.3 0.3 Q

Part............................................................. 0.3 Q Q Q N

No (Attic Not Heated)...................................... 21.5 5.2 3.6 10.5 2.2

No Attic........................................................... 64.6 10.4 17.6 20.2 16.4

Not Asked....................................................... 23.7 4.6 3.9 9.6 5.6

Air-Conditioned Attic

Yes................................................................. 1.0 Q 0.3 0.4 Q

All................................................................ 0.7 Q 0.3 Q Q

Part............................................................. 0.3 QQQQ

No (Attic Not Cooled)...................................... 21.9 5.4 3.7 10.6 2.1

No Attic........................................................... 64.6 10.4 17.6 20.2 16.4

Not Asked....................................................... 23.7 4.6 3.9 9.6 5.6

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Housing

Units 

(millions)

U.S. Census Region

Living Space Characteristics

Table HC10.2 Living Space Characteristics by U.S. Census Region, 2005

Northeast Midwest South West

 Million U.S. Housing Units

Garage/Carport

(Single-Family and Mobile Homes)

Yes......................................................................... 61.5 8.5 17.1 20.8 15.1

Attached............................................................. 41.8 5.7 10.5 14.5 11.1

1-Car Garage.................................................. 9.5 2.4 2.3 2.9 1.9

2-Car Garage.................................................. 28.4 3.1 6.8 10.6 7.9

3 or More Car Garage..................................... 3.8 0.2 1.3 0.9 1.3

Detached............................................................ 15.2 2.7 6.4 3.6 2.5

1-Car Garage.................................................. 6.1 1.3 2.5 1.5 0.7

2-Car Garage.................................................. 7.8 1.3 3.2 1.7 1.5

3 or More Car Garage..................................... 1.4 Q 0.6 0.4 0.3

Carport (only)...................................................... 4.7 Q 0.3 2.7 1.6

No.......................................................................... 25.1 5.4 3.8 12.2 3.7

Not Asked (All Apartments).................................... 24.5 6.7 4.6 7.8 5.4

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households

were sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total.......................................................................... 111.1 20.6 15.1 5.5

Floorspace (Square Feet)

Total Floorspace

Fewer than 500................................................... 3.1 0.9 0.5 0.4

500 to 999........................................................... 22.2 4.6 3.5 1.1

1,000 to 1,499..................................................... 19.1 2.6 2.0 0.6

1,500 to 1,999..................................................... 14.4 1.9 1.5 0.5

2,000 to 2,499..................................................... 12.8 2.1 1.5 0.6

2,500 to 2,999..................................................... 10.1 2.2 1.7 0.5

3,000 to 3,499..................................................... 8.2 1.7 1.2 0.5

3,500 to 3,999..................................................... 5.7 1.2 0.8 0.4

4,000 or More..................................................... 15.7 3.5 2.5 1.0

Heated Floorspace

None................................................................... 3.6 Q Q Q

Fewer than 500................................................... 6.1 1.3 0.9 0.4

500 to 999........................................................... 27.7 5.6 4.2 1.4

1,000 to 1,499..................................................... 26.0 4.3 3.3 1.1

1,500 to 1,999..................................................... 17.6 3.0 2.3 0.7

2,000 to 2,499..................................................... 10.7 2.2 1.5 0.7

2,500 to 2,999..................................................... 7.7 1.6 1.1 0.5

3,000 to 3,499..................................................... 3.8 0.8 0.6 0.2

3,500 to 3,999..................................................... 2.6 0.6 0.4 0.2

4,000 or More..................................................... 5.2 1.0 0.8 0.2

Centrally Cooled Floorspace

None................................................................... 45.2 14.6 9.9 4.7

Fewer than 500................................................... 3.9 Q Q N

500 to 999........................................................... 15.0 1.1 1.0 0.2

1,000 to 1,499..................................................... 15.6 1.2 1.0 0.2

1,500 to 1,999..................................................... 11.1 1.3 1.1 Q

2,000 to 2,499..................................................... 7.0 0.5 0.5 Q

2,500 to 2,999..................................................... 5.2 0.6 0.6 Q

3,000 to 3,499..................................................... 2.7 0.4 0.3 Q

3,500 to 3,999..................................................... 1.8 0.2 Q Q

4,000 or More..................................................... 3.5 0.4 0.4 Q

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2.................................................................. 3.4 0.9 0.6 0.3

3......................................................................... 8.6 1.9 1.4 0.4

4......................................................................... 16.9 3.4 2.3 1.1

5......................................................................... 23.9 3.8 2.9 0.9

6......................................................................... 22.9 3.8 2.7 1.1

7......................................................................... 16.5 2.9 2.3 0.6

8......................................................................... 9.8 1.8 1.4 0.4

9 or More............................................................ 9.2 2.1 1.6 0.6

Table HC11.2 Living Space Characteristics by Northeast Census Region, 2005

Middle Atlantic New England

 Million U.S. Housing Units

Northeast Census Region

Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total

Northeast

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC11.2 Living Space Characteristics by Northeast Census Region, 2005

Middle Atlantic New England

 Million U.S. Housing Units

Northeast Census Region

Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total

Northeast

Bedrooms

None (Studio/Efficiency)..................................... 1.9 0.5 0.4 0.2

1......................................................................... 10.2 2.5 1.8 0.7

2......................................................................... 28.7 6.0 4.2 1.7

3......................................................................... 47.5 7.1 5.3 1.8

4......................................................................... 18.4 3.4 2.6 0.8

5 or More............................................................ 4.3 1.0 0.8 0.2

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency)..................................... 1.9 0.5 0.4 0.2

1......................................................................... 5.3 0.7 0.5 Q

2......................................................................... 37.4 6.8 5.0 1.8

3......................................................................... 35.0 5.8 4.2 1.6

4......................................................................... 19.2 4.1 3.2 0.9

5 or More............................................................ 12.2 2.7 1.8 0.8

Full Bathrooms

None................................................................... 0.3 Q Q Q

1......................................................................... 54.9 13.9 10.0 3.8

2......................................................................... 45.9 5.4 4.2 1.3

3 or More............................................................ 9.9 1.2 0.9 0.3

Half Bathrooms

None................................................................... 79.4 14.1 10.3 3.8

1......................................................................... 29.7 6.1 4.6 1.5

2 or More............................................................ 2.0 0.4 Q 0.2

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes..................................................................... 35.5 11.7 8.1 3.6

No....................................................................... 51.9 4.3 3.6 0.7

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 4.6 3.4 1.2

Finished Basement

Yes................................................................. 16.7 4.4 3.2 1.2

No................................................................... 18.7 7.2 4.9 2.3

No Basement.................................................. 51.9 4.3 3.6 0.7

Not Asked....................................................... 23.7 4.6 3.4 1.2

Number of Finished Rooms

in Basement

1...................................................................... 8.1 2.9 2.0 0.9

2...................................................................... 3.8 0.9 0.7 0.2

3 or More......................................................... 4.8 0.6 0.5 0.1

None (Basement Unfinished).......................... 18.7 7.2 4.9 2.3

No Basement.................................................. 51.9 4.3 3.6 0.7

Not Asked....................................................... 23.7 4.6 3.4 1.2

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC11.2 Living Space Characteristics by Northeast Census Region, 2005

Middle Atlantic New England

 Million U.S. Housing Units

Northeast Census Region

Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total

Northeast

Heated Basement

Yes................................................................. 20.7 5.3 4.0 1.4

All................................................................ 14.3 3.5 2.7 0.8

Part............................................................. 6.4 1.8 1.3 0.5

None (Basement Not Heated)......................... 14.8 6.3 4.1 2.2

No Basement.................................................. 51.9 4.3 3.6 0.7

Not Asked....................................................... 23.7 4.6 3.4 1.2

Air-Conditioned Basement

Yes................................................................. 11.4 1.7 1.5 0.2

All................................................................ 8.4 1.1 0.9 Q

Part............................................................. 3.0 0.7 0.5 Q

No (Basement Not Cooled)............................. 24.1 9.9 6.6 3.3

No Basement.................................................. 51.9 4.3 3.6 0.7

Not Asked....................................................... 23.7 4.6 3.4 1.2

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes..................................................................... 22.8 5.6 4.2 1.4

No....................................................................... 64.6 10.4 7.5 2.9

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 4.6 3.4 1.2

Finished Attic

Yes................................................................. 2.7 0.8 0.6 0.2

No................................................................... 20.1 4.8 3.6 1.2

No Attic........................................................... 64.6 10.4 7.5 2.9

Not Asked....................................................... 23.7 4.6 3.4 1.2

Number of Finished Rooms in Attic

1...................................................................... 2.2 0.6 0.5 0.2

2 or More......................................................... 0.5 Q Q Q

None (Attic Unfinished)................................... 20.1 4.8 3.6 1.2

No Attic........................................................... 64.6 10.4 7.5 2.9

Not Asked....................................................... 23.7 4.6 3.4 1.2

Heated Attic

Yes................................................................. 1.3 0.4 0.3 Q

All................................................................ 1.0 0.3 0.2 Q

Part............................................................. 0.3 Q Q Q

No (Attic Not Heated)...................................... 21.5 5.2 3.9 1.3

No Attic........................................................... 64.6 10.4 7.5 2.9

Not Asked....................................................... 23.7 4.6 3.4 1.2

Air-Conditioned Attic

Yes................................................................. 1.0 Q Q Q

All................................................................ 0.7 Q Q Q

Part............................................................. 0.3 Q Q N

No (Attic Not Cooled)...................................... 21.9 5.4 4.1 1.4

No Attic........................................................... 64.6 10.4 7.5 2.9

Not Asked....................................................... 23.7 4.6 3.4 1.2

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC11.2 Living Space Characteristics by Northeast Census Region, 2005

Middle Atlantic New England

 Million U.S. Housing Units

Northeast Census Region

Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total

Northeast

Garage/Carport

(Single-Family and Mobile Homes)

Yes......................................................................... 61.5 8.5 6.2 2.3

Attached............................................................. 41.8 5.7 4.3 1.4

1-Car Garage.................................................. 9.5 2.4 1.9 0.5

2-Car Garage.................................................. 28.4 3.1 2.3 0.8

3 or More Car Garage..................................... 3.8 0.2 Q Q

Detached............................................................ 15.2 2.7 1.8 0.9

1-Car Garage.................................................. 6.1 1.3 0.8 0.5

2-Car Garage.................................................. 7.8 1.3 0.9 0.4

3 or More Car Garage..................................... 1.4 Q Q Q

Carport (only)...................................................... 4.7 Q Q Q

No.......................................................................... 25.1 5.4 4.1 1.3

Not Asked (All Apartments).................................... 24.5 6.7 4.8 1.9

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were 

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total.......................................................................... 111.1 25.6 17.7 7.9

Floorspace (Square Feet)

Total Floorspace

Fewer than 500................................................... 3.1 0.5 0.3 Q

500 to 999........................................................... 22.2 3.5 2.2 1.3

1,000 to 1,499..................................................... 19.1 4.2 2.9 1.2

1,500 to 1,999..................................................... 14.4 3.4 2.3 1.1

2,000 to 2,499..................................................... 12.8 3.1 2.1 1.0

2,500 to 2,999..................................................... 10.1 2.5 1.6 0.9

3,000 to 3,499..................................................... 8.2 2.3 1.7 0.6

3,500 to 3,999..................................................... 5.7 2.0 1.6 0.4

4,000 or More..................................................... 15.7 4.2 3.0 1.2

Heated Floorspace

None................................................................... 3.6 0.5 Q Q

Fewer than 500................................................... 6.1 0.9 0.6 0.2

500 to 999........................................................... 27.7 5.7 3.6 2.1

1,000 to 1,499..................................................... 26.0 5.2 3.9 1.3

1,500 to 1,999..................................................... 17.6 3.9 2.7 1.2

2,000 to 2,499..................................................... 10.7 2.8 1.8 1.0

2,500 to 2,999..................................................... 7.7 2.2 1.6 0.6

3,000 to 3,499..................................................... 3.8 1.5 1.0 0.6

3,500 to 3,999..................................................... 2.6 1.1 0.7 0.3

4,000 or More..................................................... 5.2 1.9 1.4 0.5

Centrally Cooled Floorspace

None................................................................... 45.2 8.3 6.4 1.9

Fewer than 500................................................... 3.9 0.8 0.5 0.3

500 to 999........................................................... 15.0 3.0 2.0 1.0

1,000 to 1,499..................................................... 15.6 3.9 2.7 1.2

1,500 to 1,999..................................................... 11.1 2.4 1.7 0.7

2,000 to 2,499..................................................... 7.0 2.3 1.5 0.8

2,500 to 2,999..................................................... 5.2 1.7 1.1 0.6

3,000 to 3,499..................................................... 2.7 1.1 0.5 0.6

3,500 to 3,999..................................................... 1.8 0.8 0.5 0.3

4,000 or More..................................................... 3.5 1.4 0.9 0.4

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2.................................................................. 3.4 0.9 0.6 Q

3......................................................................... 8.6 1.3 0.7 0.6

4......................................................................... 16.9 3.3 2.3 1.0

5......................................................................... 23.9 5.7 4.1 1.6

6......................................................................... 22.9 5.3 3.4 1.9

7......................................................................... 16.5 3.9 2.9 1.0

8......................................................................... 9.8 2.7 1.9 0.8

9 or More............................................................ 9.2 2.6 1.9 0.8

Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total

Midwest

Table HC12.2 Living Space Characteristics by Midwest Census Region, 2005

East North Central West North Central

 Million U.S. Housing Units

Midwest Census Region

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total

Midwest

Table HC12.2 Living Space Characteristics by Midwest Census Region, 2005

East North Central West North Central

 Million U.S. Housing Units

Midwest Census Region

Bedrooms

None (Studio/Efficiency)..................................... 1.9 0.4 0.4 Q

1......................................................................... 10.2 1.6 0.9 0.7

2......................................................................... 28.7 6.8 4.5 2.3

3......................................................................... 47.5 11.2 8.0 3.2

4......................................................................... 18.4 4.6 3.3 1.4

5 or More............................................................ 4.3 1.0 0.7 0.3

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency)..................................... 1.9 0.4 0.4 Q

1......................................................................... 5.3 1.1 0.7 0.4

2......................................................................... 37.4 7.4 5.2 2.2

3......................................................................... 35.0 8.3 5.6 2.7

4......................................................................... 19.2 5.0 3.5 1.4

5 or More............................................................ 12.2 3.4 2.4 1.0

Full Bathrooms

None................................................................... 0.3 Q Q Q

1......................................................................... 54.9 14.7 10.8 3.9

2......................................................................... 45.9 8.5 5.5 2.9

3 or More............................................................ 9.9 2.3 1.4 1.0

Half Bathrooms

None................................................................... 79.4 17.2 11.4 5.8

1......................................................................... 29.7 7.8 5.9 1.9

2 or More............................................................ 2.0 0.7 0.5 Q

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes..................................................................... 35.5 14.7 10.5 4.2

No....................................................................... 51.9 7.0 4.8 2.2

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 3.9 2.5 1.4

Finished Basement

Yes................................................................. 16.7 7.2 4.8 2.4

No................................................................... 18.7 7.5 5.6 1.8

No Basement.................................................. 51.9 7.0 4.8 2.2

Not Asked....................................................... 23.7 3.9 2.5 1.4

Number of Finished Rooms

in Basement

1...................................................................... 8.1 3.2 2.3 0.9

2...................................................................... 3.8 1.9 1.2 0.7

3 or More......................................................... 4.8 2.1 1.3 0.8

None (Basement Unfinished).......................... 18.7 7.5 5.6 1.8

No Basement.................................................. 51.9 7.0 4.8 2.2

Not Asked....................................................... 23.7 3.9 2.5 1.4

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total

Midwest

Table HC12.2 Living Space Characteristics by Midwest Census Region, 2005

East North Central West North Central

 Million U.S. Housing Units

Midwest Census Region

Heated Basement

Yes................................................................. 20.7 10.1 6.9 3.2

All................................................................ 14.3 7.3 4.8 2.5

Part............................................................. 6.4 2.9 2.1 0.8

None (Basement Not Heated)......................... 14.8 4.6 3.6 1.0

No Basement.................................................. 51.9 7.0 4.8 2.2

Not Asked....................................................... 23.7 3.9 2.5 1.4

Air-Conditioned Basement

Yes................................................................. 11.4 6.6 4.1 2.5

All................................................................ 8.4 5.2 3.1 2.1

Part............................................................. 3.0 1.5 1.0 0.5

No (Basement Not Cooled)............................. 24.1 8.1 6.4 1.7

No Basement.................................................. 51.9 7.0 4.8 2.2

Not Asked....................................................... 23.7 3.9 2.5 1.4

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes..................................................................... 22.8 4.1 3.1 1.0

No....................................................................... 64.6 17.6 12.2 5.5

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 3.9 2.5 1.4

Finished Attic

Yes................................................................. 2.7 0.6 0.3 0.3

No................................................................... 20.1 3.5 2.8 0.7

No Attic........................................................... 64.6 17.6 12.2 5.5

Not Asked....................................................... 23.7 3.9 2.5 1.4

Number of Finished Rooms in Attic

1...................................................................... 2.2 0.4 Q Q

2 or More......................................................... 0.5 Q Q Q

None (Attic Unfinished)................................... 20.1 3.5 2.8 0.7

No Attic........................................................... 64.6 17.6 12.2 5.5

Not Asked....................................................... 23.7 3.9 2.5 1.4

Heated Attic

Yes................................................................. 1.3 0.4 0.3 Q

All................................................................ 1.0 0.3 Q Q

Part............................................................. 0.3 Q Q Q

No (Attic Not Heated)...................................... 21.5 3.6 2.8 0.8

No Attic........................................................... 64.6 17.6 12.2 5.5

Not Asked....................................................... 23.7 3.9 2.5 1.4

Air-Conditioned Attic

Yes................................................................. 1.0 0.3 Q Q

All................................................................ 0.7 0.3 Q Q

Part............................................................. 0.3 Q Q Q

No (Attic Not Cooled)...................................... 21.9 3.7 2.9 0.8

No Attic........................................................... 64.6 17.6 12.2 5.5

Not Asked....................................................... 23.7 3.9 2.5 1.4

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total

Midwest

Table HC12.2 Living Space Characteristics by Midwest Census Region, 2005

East North Central West North Central

 Million U.S. Housing Units

Midwest Census Region

Garage/Carport

(Single-Family and Mobile Homes)

Yes......................................................................... 61.5 17.1 11.9 5.3

Attached............................................................. 41.8 10.5 7.0 3.5

1-Car Garage.................................................. 9.5 2.3 1.5 0.8

2-Car Garage.................................................. 28.4 6.8 4.6 2.2

3 or More Car Garage..................................... 3.8 1.3 0.9 0.4

Detached............................................................ 15.2 6.4 4.7 1.7

1-Car Garage.................................................. 6.1 2.5 2.0 0.6

2-Car Garage.................................................. 7.8 3.2 2.4 0.9

3 or More Car Garage..................................... 1.4 0.6 0.3 Q

Carport (only)...................................................... 4.7 0.3 Q Q

No.......................................................................... 25.1 3.8 2.7 1.2

Not Asked (All Apartments).................................... 24.5 4.6 3.2 1.4

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were 

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total.......................................................................... 111.1 40.7 21.7 6.9 12.1

Floorspace (Square Feet)

Total Floorspace

Fewer than 500................................................... 3.1 0.8 0.6 Q Q

500 to 999........................................................... 22.2 8.5 4.1 1.4 3.1

1,000 to 1,499..................................................... 19.1 8.0 4.4 1.4 2.1

1,500 to 1,999..................................................... 14.4 5.3 2.6 1.1 1.6

2,000 to 2,499..................................................... 12.8 4.6 2.2 0.7 1.7

2,500 to 2,999..................................................... 10.1 3.2 2.0 0.6 0.5

3,000 to 3,499..................................................... 8.2 2.3 1.2 0.3 0.7

3,500 to 3,999..................................................... 5.7 1.7 0.9 0.4 0.4

4,000 or More..................................................... 15.7 6.2 3.6 0.9 1.7

Heated Floorspace

None................................................................... 3.6 0.8 0.7 Q Q

Fewer than 500................................................... 6.1 1.9 0.9 0.2 0.8

500 to 999........................................................... 27.7 10.5 4.9 1.7 3.9

1,000 to 1,499..................................................... 26.0 11.3 6.2 2.1 3.1

1,500 to 1,999..................................................... 17.6 6.8 3.5 1.3 2.0

2,000 to 2,499..................................................... 10.7 3.7 2.0 0.7 1.0

2,500 to 2,999..................................................... 7.7 2.3 1.4 0.3 0.6

3,000 to 3,499..................................................... 3.8 1.0 0.6 0.2 Q

3,500 to 3,999..................................................... 2.6 0.6 0.4 Q Q

4,000 or More..................................................... 5.2 1.7 1.1 0.2 0.4

Centrally Cooled Floorspace

None................................................................... 45.2 8.6 4.1 1.7 2.8

Fewer than 500................................................... 3.9 2.0 1.1 0.3 0.7

500 to 999........................................................... 15.0 7.7 3.7 1.2 2.8

1,000 to 1,499..................................................... 15.6 8.2 4.8 1.4 2.1

1,500 to 1,999..................................................... 11.1 5.7 3.0 1.1 1.6

2,000 to 2,499..................................................... 7.0 3.3 1.9 0.5 0.9

2,500 to 2,999..................................................... 5.2 2.1 1.3 0.3 0.5

3,000 to 3,499..................................................... 2.7 1.0 0.5 0.2 Q

3,500 to 3,999..................................................... 1.8 0.6 0.4 Q Q

4,000 or More..................................................... 3.5 1.4 0.8 Q 0.5

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2.................................................................. 3.4 0.6 Q Q 0.3

3......................................................................... 8.6 3.3 1.7 0.4 1.1

4......................................................................... 16.9 6.6 3.5 1.4 1.7

5......................................................................... 23.9 9.1 5.0 1.5 2.7

6......................................................................... 22.9 9.0 4.5 1.7 2.8

7......................................................................... 16.5 6.0 3.2 0.9 1.9

8......................................................................... 9.8 3.3 1.9 0.5 0.8

9 or More............................................................ 9.2 2.9 1.7 0.4 0.8

Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total 

South

Table HC13.2 Living Space Characteristics by South Census Region, 2005

South Atlantic East South 

Central

West South 

Central

 Million U.S. Housing Units

South Census Region

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total 

South

Table HC13.2 Living Space Characteristics by South Census Region, 2005

South Atlantic East South 

Central

West South 

Central

 Million U.S. Housing Units

South Census Region

Bedrooms

None (Studio/Efficiency)..................................... 1.9 0.4 Q Q Q

1......................................................................... 10.2 3.7 1.9 0.4 1.4

2......................................................................... 28.7 9.7 5.4 1.8 2.5

3......................................................................... 47.5 19.1 10.1 3.5 5.5

4......................................................................... 18.4 6.4 3.4 1.0 2.1

5 or More............................................................ 4.3 1.3 0.7 Q 0.5

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency)..................................... 1.9 0.4 Q Q Q

1......................................................................... 5.3 2.1 0.8 0.4 0.8

2......................................................................... 37.4 14.0 7.5 2.6 3.9

3......................................................................... 35.0 14.0 7.2 2.3 4.5

4......................................................................... 19.2 5.9 3.3 1.0 1.7

5 or More............................................................ 12.2 4.3 2.6 0.6 1.0

Full Bathrooms

None................................................................... 0.3 Q Q N N

1......................................................................... 54.9 16.1 8.0 3.0 5.1

2......................................................................... 45.9 20.7 11.1 3.4 6.2

3 or More............................................................ 9.9 3.9 2.5 0.5 0.9

Half Bathrooms

None................................................................... 79.4 30.5 16.1 5.0 9.4

1......................................................................... 29.7 9.6 5.2 1.8 2.7

2 or More............................................................ 2.0 0.6 0.4 Q Q

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes..................................................................... 35.5 5.9 4.4 1.3 Q

No....................................................................... 51.9 25.1 11.8 4.2 9.1

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 9.6 5.5 1.3 2.7

Finished Basement

Yes................................................................. 16.7 3.1 2.6 0.5 Q

No................................................................... 18.7 2.8 1.7 0.8 Q

No Basement.................................................. 51.9 25.1 11.8 4.2 9.1

Not Asked....................................................... 23.7 9.6 5.5 1.3 2.7

Number of Finished Rooms

in Basement

1...................................................................... 8.1 1.5 1.2 0.3 N

2...................................................................... 3.8 0.6 0.4 Q N

3 or More......................................................... 4.8 1.1 1.0 Q Q

None (Basement Unfinished).......................... 18.7 2.8 1.7 0.8 Q

No Basement.................................................. 51.9 25.1 11.8 4.2 9.1

Not Asked....................................................... 23.7 9.6 5.5 1.3 2.7

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total 

South

Table HC13.2 Living Space Characteristics by South Census Region, 2005

South Atlantic East South 

Central

West South 

Central

 Million U.S. Housing Units

South Census Region

Heated Basement

Yes................................................................. 20.7 3.3 2.7 0.6 Q

All................................................................ 14.3 2.4 1.8 0.5 Q

Part............................................................. 6.4 1.0 0.8 Q N

None (Basement Not Heated)......................... 14.8 2.6 1.7 0.7 Q

No Basement.................................................. 51.9 25.1 11.8 4.2 9.1

Not Asked....................................................... 23.7 9.6 5.5 1.3 2.7

Air-Conditioned Basement

Yes................................................................. 11.4 2.3 1.8 0.5 Q

All................................................................ 8.4 1.7 1.3 0.4 Q

Part............................................................. 3.0 0.6 0.5 Q N

No (Basement Not Cooled)............................. 24.1 3.6 2.6 0.8 Q

No Basement.................................................. 51.9 25.1 11.8 4.2 9.1

Not Asked....................................................... 23.7 9.6 5.5 1.3 2.7

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes..................................................................... 22.8 10.9 5.7 1.7 3.5

No....................................................................... 64.6 20.2 10.4 3.9 5.9

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 9.6 5.5 1.3 2.7

Finished Attic

Yes................................................................. 2.7 1.1 0.3 0.3 0.5

No................................................................... 20.1 9.8 5.4 1.4 3.0

No Attic........................................................... 64.6 20.2 10.4 3.9 5.9

Not Asked....................................................... 23.7 9.6 5.5 1.3 2.7

Number of Finished Rooms in Attic

1...................................................................... 2.2 1.0 Q 0.3 0.4

2 or More......................................................... 0.5 QQQQ

None (Attic Unfinished)................................... 20.1 9.8 5.4 1.4 3.0

No Attic........................................................... 64.6 20.2 10.4 3.9 5.9

Not Asked....................................................... 23.7 9.6 5.5 1.3 2.7

Heated Attic

Yes................................................................. 1.3 0.4 Q Q Q

All................................................................ 1.0 0.3 Q Q Q

Part............................................................. 0.3 Q Q N Q

No (Attic Not Heated)...................................... 21.5 10.5 5.5 1.6 3.3

No Attic........................................................... 64.6 20.2 10.4 3.9 5.9

Not Asked....................................................... 23.7 9.6 5.5 1.3 2.7

Air-Conditioned Attic

Yes................................................................. 1.0 0.4 Q Q Q

All................................................................ 0.7 QQQQ

Part............................................................. 0.3 QQQQ

No (Attic Not Cooled)...................................... 21.9 10.6 5.5 1.6 3.4

No Attic........................................................... 64.6 20.2 10.4 3.9 5.9

Not Asked....................................................... 23.7 9.6 5.5 1.3 2.7

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total 

South

Table HC13.2 Living Space Characteristics by South Census Region, 2005

South Atlantic East South 

Central

West South 

Central

 Million U.S. Housing Units

South Census Region

Garage/Carport

(Single-Family and Mobile Homes)

Yes......................................................................... 61.5 20.8 10.0 3.7 7.1

Attached............................................................. 41.8 14.5 7.3 2.3 5.0

1-Car Garage.................................................. 9.5 2.9 1.5 0.6 0.9

2-Car Garage.................................................. 28.4 10.6 5.2 1.6 3.8

3 or More Car Garage..................................... 3.8 0.9 0.6 Q 0.3

Detached............................................................ 15.2 3.6 1.5 0.8 1.4

1-Car Garage.................................................. 6.1 1.5 0.7 0.4 0.5

2-Car Garage.................................................. 7.8 1.7 0.6 0.4 0.7

3 or More Car Garage..................................... 1.4 0.4 Q Q Q

Carport (only)...................................................... 4.7 2.7 1.3 0.7 0.8

No.......................................................................... 25.1 12.2 6.8 2.5 2.9

Not Asked (All Apartments).................................... 24.5 7.8 4.9 0.7 2.1

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households

were sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total.......................................................................... 111.1 24.2 7.6 16.6

Floorspace (Square Feet)

Total Floorspace

Fewer than 500................................................... 3.1 0.9 Q 0.7

500 to 999........................................................... 22.2 5.6 1.4 4.2

1,000 to 1,499..................................................... 19.1 4.4 1.3 3.0

1,500 to 1,999..................................................... 14.4 3.7 1.2 2.5

2,000 to 2,499..................................................... 12.8 2.9 0.9 2.0

2,500 to 2,999..................................................... 10.1 2.2 1.0 1.2

3,000 to 3,499..................................................... 8.2 2.0 0.6 1.4

3,500 to 3,999..................................................... 5.7 0.8 0.3 0.5

4,000 or More..................................................... 15.7 1.7 0.7 1.0

Heated Floorspace

None................................................................... 3.6 2.1 Q 1.9

Fewer than 500................................................... 6.1 2.1 0.4 1.7

500 to 999........................................................... 27.7 6.0 1.6 4.4

1,000 to 1,499..................................................... 26.0 5.2 1.8 3.4

1,500 to 1,999..................................................... 17.6 3.9 1.7 2.2

2,000 to 2,499..................................................... 10.7 2.0 0.7 1.3

2,500 to 2,999..................................................... 7.7 1.6 0.7 0.9

3,000 to 3,499..................................................... 3.8 0.4 Q 0.2

3,500 to 3,999..................................................... 2.6 0.3 Q Q

4,000 or More..................................................... 5.2 0.6 0.3 0.3

Centrally Cooled Floorspace

None................................................................... 45.2 13.7 3.6 10.1

Fewer than 500................................................... 3.9 1.0 0.3 0.6

500 to 999........................................................... 15.0 3.2 1.1 2.1

1,000 to 1,499..................................................... 15.6 2.3 0.7 1.6

1,500 to 1,999..................................................... 11.1 1.7 0.9 0.8

2,000 to 2,499..................................................... 7.0 0.8 0.2 0.6

2,500 to 2,999..................................................... 5.2 0.8 0.4 0.4

3,000 to 3,499..................................................... 2.7 Q Q Q

3,500 to 3,999..................................................... 1.8 Q Q Q

4,000 or More..................................................... 3.5 0.3 Q Q

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2.................................................................. 3.4 1.1 0.3 0.8

3......................................................................... 8.6 2.2 0.3 1.8

4......................................................................... 16.9 3.7 1.0 2.7

5......................................................................... 23.9 5.2 1.8 3.4

6......................................................................... 22.9 4.9 1.6 3.2

7......................................................................... 16.5 3.6 1.2 2.5

8......................................................................... 9.8 2.0 0.8 1.2

9 or More............................................................ 9.2 1.5 0.6 0.9

Table HC14.2 Living Space Characteristics by West Census Region, 2005

Mountain Pacific

 Million U.S. Housing Units

West Census Region

Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total

West

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC14.2 Living Space Characteristics by West Census Region, 2005

Mountain Pacific

 Million U.S. Housing Units

West Census Region

Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total

West

Bedrooms

None (Studio/Efficiency)..................................... 1.9 0.6 Q 0.4

1......................................................................... 10.2 2.3 0.3 2.0

2......................................................................... 28.7 6.2 1.6 4.6

3......................................................................... 47.5 10.2 3.7 6.4

4......................................................................... 18.4 3.9 1.3 2.7

5 or More............................................................ 4.3 1.0 0.4 0.6

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency)..................................... 1.9 0.6 Q 0.4

1......................................................................... 5.3 1.4 0.4 1.1

2......................................................................... 37.4 9.2 2.6 6.6

3......................................................................... 35.0 6.9 2.3 4.6

4......................................................................... 19.2 4.2 1.4 2.8

5 or More............................................................ 12.2 1.9 0.7 1.2

Full Bathrooms

None................................................................... 0.3 Q Q Q

1......................................................................... 54.9 10.2 2.9 7.4

2......................................................................... 45.9 11.3 3.6 7.7

3 or More............................................................ 9.9 2.5 1.0 1.5

Half Bathrooms

None................................................................... 79.4 17.6 5.3 12.3

1......................................................................... 29.7 6.2 2.2 4.0

2 or More............................................................ 2.0 0.4 Q 0.3

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes..................................................................... 35.5 3.2 1.8 1.4

No....................................................................... 51.9 15.4 4.2 11.2

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 5.6 1.6 4.0

Finished Basement

Yes................................................................. 16.7 1.9 1.1 0.8

No................................................................... 18.7 1.2 0.7 0.5

No Basement.................................................. 51.9 15.4 4.2 11.2

Not Asked....................................................... 23.7 5.6 1.6 4.0

Number of Finished Rooms

in Basement

1...................................................................... 8.1 0.6 0.3 0.3

2...................................................................... 3.8 0.4 Q 0.3

3 or More......................................................... 4.8 0.9 0.7 Q

None (Basement Unfinished).......................... 18.7 1.2 0.7 0.5

No Basement.................................................. 51.9 15.4 4.2 11.2

Not Asked....................................................... 23.7 5.6 1.6 4.0

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC14.2 Living Space Characteristics by West Census Region, 2005

Mountain Pacific

 Million U.S. Housing Units

West Census Region

Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total

West

Heated Basement

Yes................................................................. 20.7 1.9 1.2 0.7

All................................................................ 14.3 1.2 0.6 0.5

Part............................................................. 6.4 0.7 0.5 Q

None (Basement Not Heated)......................... 14.8 1.3 0.6 0.7

No Basement.................................................. 51.9 15.4 4.2 11.2

Not Asked....................................................... 23.7 5.6 1.6 4.0

Air-Conditioned Basement

Yes................................................................. 11.4 0.7 0.5 0.2

All................................................................ 8.4 0.5 0.3 Q

Part............................................................. 3.0 Q Q Q

No (Basement Not Cooled)............................. 24.1 2.5 1.3 1.1

No Basement.................................................. 51.9 15.4 4.2 11.2

Not Asked....................................................... 23.7 5.6 1.6 4.0

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes..................................................................... 22.8 2.2 0.3 1.9

No....................................................................... 64.6 16.4 5.6 10.7

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 5.6 1.6 4.0

Finished Attic

Yes................................................................. 2.7 0.3 Q Q

No................................................................... 20.1 2.0 0.2 1.7

No Attic........................................................... 64.6 16.4 5.6 10.7

Not Asked....................................................... 23.7 5.6 1.6 4.0

Number of Finished Rooms in Attic

1...................................................................... 2.2 Q Q Q

2 or More......................................................... 0.5 Q Q Q

None (Attic Unfinished)................................... 20.1 2.0 0.2 1.7

No Attic........................................................... 64.6 16.4 5.6 10.7

Not Asked....................................................... 23.7 5.6 1.6 4.0

Heated Attic

Yes................................................................. 1.3 Q Q Q

All................................................................ 1.0 Q Q Q

Part............................................................. 0.3 N N N

No (Attic Not Heated)...................................... 21.5 2.2 0.3 1.9

No Attic........................................................... 64.6 16.4 5.6 10.7

Not Asked....................................................... 23.7 5.6 1.6 4.0

Air-Conditioned Attic

Yes................................................................. 1.0 Q Q Q

All................................................................ 0.7 Q Q Q

Part............................................................. 0.3 Q N Q

No (Attic Not Cooled)...................................... 21.9 2.1 0.3 1.8

No Attic........................................................... 64.6 16.4 5.6 10.7

Not Asked....................................................... 23.7 5.6 1.6 4.0

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC14.2 Living Space Characteristics by West Census Region, 2005

Mountain Pacific

 Million U.S. Housing Units

West Census Region

Living Space Characteristics

U.S.

Housing

Units

(millions)

Census Division

Total

West

Garage/Carport

(Single-Family and Mobile Homes)

Yes......................................................................... 61.5 15.1 5.0 10.1

Attached............................................................. 41.8 11.1 3.6 7.5

1-Car Garage.................................................. 9.5 1.9 0.4 1.4

2-Car Garage.................................................. 28.4 7.9 2.7 5.2

3 or More Car Garage..................................... 3.8 1.3 0.5 0.8

Detached............................................................ 15.2 2.5 0.6 1.9

1-Car Garage.................................................. 6.1 0.7 Q 0.5

2-Car Garage.................................................. 7.8 1.5 0.3 1.2

3 or More Car Garage..................................... 1.4 0.3 Q Q

Carport (only)...................................................... 4.7 1.6 0.8 0.8

No.......................................................................... 25.1 3.7 1.6 2.0

Not Asked (All Apartments).................................... 24.5 5.4 1.0 4.5

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were 

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC15.2 Living Space Characteristics by Four Most Populated States, 2005

Total.......................................................................... 111.1 7.1 7.0 8.0 12.1

Floorspace (Square Feet)

Total Floorspace

Fewer than 500................................................... 3.1 0.4 Q Q 0.5

500 to 999........................................................... 22.2 2.4 1.4 2.0 3.1

1,000 to 1,499..................................................... 19.1 1.1 1.8 1.1 2.3

1,500 to 1,999..................................................... 14.4 0.5 1.0 1.0 1.9

2,000 to 2,499..................................................... 12.8 0.6 0.8 1.2 1.6

2,500 to 2,999..................................................... 10.1 0.5 0.5 0.3 1.0

3,000 to 3,499..................................................... 8.2 0.4 0.4 0.4 1.0

3,500 to 3,999..................................................... 5.7 0.3 Q 0.3 0.3

4,000 or More..................................................... 15.7 0.9 0.7 1.4 0.5

Heated Floorspace

None................................................................... 3.6 Q 0.7 Q 1.3

Fewer than 500................................................... 6.1 0.5 0.4 0.5 1.4

500 to 999........................................................... 27.7 2.7 1.4 2.4 3.4

1,000 to 1,499..................................................... 26.0 1.4 2.2 1.6 2.5

1,500 to 1,999..................................................... 17.6 0.7 1.3 1.4 1.5

2,000 to 2,499..................................................... 10.7 0.5 0.4 0.8 0.8

2,500 to 2,999..................................................... 7.7 0.4 0.4 0.4 0.8

3,000 to 3,499..................................................... 3.8 QQQQ

3,500 to 3,999..................................................... 2.6 QQQQ

4,000 or More..................................................... 5.2 0.4 Q 0.4 Q

Centrally Cooled Floorspace

None................................................................... 45.2 6.0 0.6 1.6 6.7

Fewer than 500................................................... 3.9 Q 0.5 0.5 0.5

500 to 999........................................................... 15.0 Q 1.4 1.8 1.8

1,000 to 1,499..................................................... 15.6 Q 2.0 1.1 1.3

1,500 to 1,999..................................................... 11.1 Q 1.3 1.2 0.7

2,000 to 2,499..................................................... 7.0 Q 0.5 0.7 0.5

2,500 to 2,999..................................................... 5.2 Q Q 0.4 0.3

3,000 to 3,499..................................................... 2.7 QQQQ

3,500 to 3,999..................................................... 1.8 QQQQ

4,000 or More..................................................... 3.5 Q Q 0.5 Q

Rooms

Total Number of Rooms

(Excluding Bathrooms)

1 or 2.................................................................. 3.4 0.4 Q Q 0.6

3......................................................................... 8.6 1.3 0.5 0.8 1.4

4......................................................................... 16.9 1.2 1.5 1.1 2.1

5......................................................................... 23.9 1.4 1.9 1.6 2.6

6......................................................................... 22.9 1.1 1.2 1.7 2.3

7......................................................................... 16.5 0.8 0.9 1.3 1.8

8......................................................................... 9.8 0.5 0.6 0.6 0.8

9 or More............................................................ 9.2 0.6 0.4 0.7 0.5

New York Florida Texas California

 Million U.S. Housing Units

U.S.

Housing 

Units

(millions)

Four Most Populated States

Living Space Characteristics

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC15.2 Living Space Characteristics by Four Most Populated States, 2005

New York Florida Texas California

 Million U.S. Housing Units

U.S.

Housing 

Units

(millions)

Four Most Populated States

Living Space Characteristics

Bedrooms

None (Studio/Efficiency)..................................... 1.9 QQQQ

1......................................................................... 10.2 1.4 0.7 1.0 1.5

2......................................................................... 28.7 2.1 2.3 1.6 3.6

3......................................................................... 47.5 2.0 3.0 3.3 4.2

4......................................................................... 18.4 0.9 0.9 1.6 2.0

5 or More............................................................ 4.3 0.4 Q 0.4 0.4

Other Rooms (Excluding Bathrooms)

None (Studio/Efficiency)..................................... 1.9 QQQQ

1......................................................................... 5.3 0.3 Q 0.5 0.9

2......................................................................... 37.4 3.0 2.7 2.6 4.8

3......................................................................... 35.0 1.9 2.4 2.8 3.7

4......................................................................... 19.2 1.1 1.2 1.2 1.9

5 or More............................................................ 12.2 0.7 0.5 0.8 0.6

Full Bathrooms

None................................................................... 0.3 N N N Q

1......................................................................... 54.9 4.9 2.1 3.0 5.3

2......................................................................... 45.9 1.9 4.3 4.2 5.5

3 or More............................................................ 9.9 0.4 0.6 0.8 1.2

Half Bathrooms

None................................................................... 79.4 5.7 6.1 6.0 8.9

1......................................................................... 29.7 1.3 1.0 2.0 3.0

2 or More............................................................ 2.0 Q N Q Q

Basements

Basement in Single-Family Homes

and Apartments in 2-4 Unit Buildings

Yes..................................................................... 35.5 3.4 Q Q 0.6

No....................................................................... 51.9 1.3 5.2 6.1 8.6

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 2.4 1.8 1.7 2.9

Finished Basement

Yes................................................................. 16.7 1.4 N N 0.3

No................................................................... 18.7 2.0 Q Q 0.3

No Basement.................................................. 51.9 1.3 5.2 6.1 8.6

Not Asked....................................................... 23.7 2.4 1.8 1.7 2.9

Number of Finished Rooms

in Basement

1...................................................................... 8.1 0.8 N N Q

2...................................................................... 3.8 Q N N Q

3 or More......................................................... 4.8 Q N N Q

None (Basement Unfinished).......................... 18.7 2.0 Q Q 0.3

No Basement.................................................. 51.9 1.3 5.2 6.1 8.6

Not Asked....................................................... 23.7 2.4 1.8 1.7 2.9

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC15.2 Living Space Characteristics by Four Most Populated States, 2005

New York Florida Texas California

 Million U.S. Housing Units

U.S.

Housing 

Units

(millions)

Four Most Populated States

Living Space Characteristics

Heated Basement

Yes................................................................. 20.7 1.8 N N Q

All................................................................ 14.3 1.3 N N Q

Part............................................................. 6.4 0.5 N N Q

None (Basement Not Heated)......................... 14.8 1.6 Q Q 0.5

No Basement.................................................. 51.9 1.3 5.2 6.1 8.6

Not Asked....................................................... 23.7 2.4 1.8 1.7 2.9

Air-Conditioned Basement

Yes................................................................. 11.4 0.5 N N Q

All................................................................ 8.4 0.3 N N Q

Part............................................................. 3.0 Q N N N

No (Basement Not Cooled)............................. 24.1 2.9 Q Q 0.6

No Basement.................................................. 51.9 1.3 5.2 6.1 8.6

Not Asked....................................................... 23.7 2.4 1.8 1.7 2.9

Attics

Attic in Single-Family Homes and

Apartments in 2-4 Unit Buildings

Yes..................................................................... 22.8 0.7 1.5 2.3 1.3

No....................................................................... 64.6 4.0 3.8 3.9 7.9

Not Asked (Mobile Homes or Apartment in

Buildings with 5 or More Units)........................... 23.7 2.4 1.8 1.7 2.9

Finished Attic

Yes................................................................. 2.7 Q Q 0.4 Q

No................................................................... 20.1 0.6 1.4 1.9 1.3

No Attic........................................................... 64.6 4.0 3.8 3.9 7.9

Not Asked....................................................... 23.7 2.4 1.8 1.7 2.9

Number of Finished Rooms in Attic

1...................................................................... 2.2 Q Q 0.4 Q

2 or More......................................................... 0.5 Q N Q N

None (Attic Unfinished)................................... 20.1 0.6 1.4 1.9 1.3

No Attic........................................................... 64.6 4.0 3.8 3.9 7.9

Not Asked....................................................... 23.7 2.4 1.8 1.7 2.9

Heated Attic

Yes................................................................. 1.3 QQQQ

All................................................................ 1.0 Q N Q Q

Part............................................................. 0.3 N Q Q N

No (Attic Not Heated)...................................... 21.5 0.7 1.4 2.2 1.3

No Attic........................................................... 64.6 4.0 3.8 3.9 7.9

Not Asked....................................................... 23.7 2.4 1.8 1.7 2.9

Air-Conditioned Attic

Yes................................................................. 1.0 Q N Q Q

All................................................................ 0.7 Q N Q Q

Part............................................................. 0.3 N N Q N

No (Attic Not Cooled)...................................... 21.9 0.7 1.5 2.2 1.3

No Attic........................................................... 64.6 4.0 3.8 3.9 7.9

Not Asked....................................................... 23.7 2.4 1.8 1.7 2.9

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC15.2 Living Space Characteristics by Four Most Populated States, 2005

New York Florida Texas California

 Million U.S. Housing Units

U.S.

Housing 

Units

(millions)

Four Most Populated States

Living Space Characteristics

Garage/Carport

(Single-Family and Mobile Homes)

Yes......................................................................... 61.5 2.2 3.9 5.1 7.6

Attached............................................................. 41.8 1.3 3.2 3.9 5.9

1-Car Garage.................................................. 9.5 0.6 0.6 0.6 1.2

2-Car Garage.................................................. 28.4 0.7 2.3 3.1 4.0

3 or More Car Garage..................................... 3.8 Q Q Q 0.7

Detached............................................................ 15.2 0.9 Q 0.9 1.3

1-Car Garage.................................................. 6.1 0.4 Q 0.3 0.3

2-Car Garage.................................................. 7.8 0.5 Q 0.5 1.0

3 or More Car Garage..................................... 1.4 Q N Q N

Carport (only)...................................................... 4.7 Q 0.4 0.3 0.4

No.......................................................................... 25.1 1.4 1.0 1.4 0.9

Not Asked (All Apartments).................................... 24.5 3.5 2.1 1.5 3.6

 Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households

were sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables