Total................................................ 111.1 86.6 2,522 1,970 1,310 1,812 1,475 821 1,055 944 554

Total Floorspace (Square Feet)

Fewer than 500............................. 3.2 0.9 261 336 162 Q Q Q 334 260 Q

500 to 999.................................... 23.8 9.4 670 683 320 705 666 274 811 721 363

1,000 to 1,499.............................. 20.8 15.0 1,121 1,083 622 1,129 1,052 535 1,228 1,090 676

1,500 to 1,999.............................. 15.4 14.4 1,574 1,450 945 1,628 1,327 629 1,712 1,489 808

2,000 to 2,499.............................. 12.2 11.9 2,039 1,731 1,055 2,143 1,813 1,152 Q Q Q

2,500 to 2,999.............................. 10.3 10.1 2,519 2,004 1,357 2,492 2,103 1,096 Q Q Q

3,000 or 3,499.............................. 6.7 6.6 3,014 2,175 1,438 3,047 2,079 1,108 N N N

3,500 to 3,999.............................. 5.2 5.1 3,549 2,505 1,518 Q Q Q N N N

4,000 or More............................... 13.3 13.2 5,154 3,626 2,690 4,980 3,527 2,460 N N N

Heated Floorspace (Square Feet)1

None............................................. 3.6 1.7 1,628 0 372 Q Q Q 824 0 Q

Fewer than 500............................. 6.1 3.0 1,086 352 182 767 342 Q 545 357 Q

500 to 999.................................... 27.7 15.0 1,306 793 392 1,088 793 348 879 785 404

1,000 to 1,499.............................. 26.0 20.6 1,785 1,245 751 1,424 1,231 531 1,251 1,238 756

1,500 to 1,999.............................. 17.6 16.7 2,221 1,745 1,133 2,056 1,690 1,051 1,746 1,676 709

2,000 to 2,499.............................. 10.7 10.6 2,752 2,223 1,396 2,624 2,296 1,349 Q Q Q

2,500 to 2,999.............................. 7.7 7.6 3,204 2,720 1,983 2,935 2,690 1,402 Q Q Q

3,000 or 3,499.............................. 3.8 3.7 3,908 3,227 2,301 Q Q Q N N N

3,500 to 3,999.............................. 2.6 2.5 4,398 3,739 2,311 Q Q Q N N N

4,000 or More............................... 5.2 5.2 5,755 5,178 3,873 Q Q Q N N N

Cooled Floorspace (Square Feet)

None............................................. 45.2 31.5 2,228 1,611 0 1,621 1,221 0 945 813 0

Fewer than 500............................. 3.9 2.8 1,411 975 386 1,267 841 353 843 674 366

500 to 999.................................... 15.0 9.4 1,738 1,218 779 1,268 1,065 771 962 874 820

1,000 to 1,499.............................. 15.6 12.5 1,955 1,449 1,249 1,453 1,318 1,275 1,240 1,173 1,240

1,500 to 1,999.............................. 11.1 10.6 2,263 1,804 1,746 1,973 1,697 1,697 Q Q Q

2,000 to 2,499.............................. 7.0 6.8 2,814 2,251 2,221 2,623 2,252 2,265 Q Q Q

2,500 to 2,999.............................. 5.2 5.1 3,097 2,775 2,725 QQQQQQ

3,000 or 3,499.............................. 2.7 2.7 3,970 3,224 3,208 Q Q Q N N N

3,500 to 3,999.............................. 1.8 1.8 4,971 4,040 3,757 Q Q Q N N N

4,000 or More............................... 3.5 3.5 5,711 5,139 5,072 Q Q Q N N N

Total Number of Rooms

(Excluding Bathrooms)

1 or 2............................................ 3.4 0.3 QQQQQQQQQ

3................................................... 8.6 2.2 1,204 817 Q 817 714 235 710 551 209

4................................................... 16.9 8.6 1,428 1,110 427 1,292 1,011 525 877 766 439

5................................................... 23.9 19.0 1,870 1,441 847 1,722 1,393 754 1,105 994 574

6................................................... 22.9 21.8 2,330 1,777 1,177 1,769 1,439 823 1,351 1,254 803

7................................................... 16.5 16.1 2,708 2,132 1,453 2,433 2,058 1,113 1,589 1,563 1,020

8................................................... 9.8 9.6 3,204 2,542 1,769 2,789 2,392 1,567 Q Q Q

9 or More...................................... 9.2 9.0 3,811 3,058 2,310 3,911 3,003 1,847 Q Q Q

Bedrooms

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

1................................................... 10.2 2.3 1,341 1,009 291 968 739 Q 597 356 Q

2................................................... 28.7 17.0 1,875 1,348 633 1,432 1,147 643 882 783 442

3................................................... 47.5 45.1 2,369 1,856 1,255 1,977 1,676 971 1,203 1,099 681

4................................................... 18.4 18.1 3,104 2,491 1,784 2,845 2,120 1,404 1,785 1,717 1,139

5 or More...................................... 4.3 4.2 3,661 2,878 2,007 QQQQQQ

Heated Cooled

Single-Family Detached

Total1

Average Square Feet per Housing Unit

Table HC1.2.3 Living Space Characteristics by Average Floorspace--

 Single-Family Housing Units and Mobile Homes, 2005

Single-Family Attached Mobile Homes

Total1 Housing Unit Characteristics Heated Cooled Total Heated Cooled 1

SingleFamily

and

Mobile

Homes

(millions)

 Housing 

Units 

(millions)

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Heated Cooled

Single-Family Detached

Total1

Average Square Feet per Housing Unit

Table HC1.2.3 Living Space Characteristics by Average Floorspace--

 Single-Family Housing Units and Mobile Homes, 2005

Single-Family Attached Mobile Homes

Total1 Housing Unit Characteristics Heated Cooled Total Heated Cooled 1

SingleFamily

and

Mobile

Homes

(millions)

 Housing 

Units 

(millions)

Other Rooms (Excluding Bathrooms s)

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

1................................................... 5.3 2.8 1,732 1,331 899 Q Q Q 813 689 417

2................................................... 37.4 24.1 1,795 1,402 762 1,299 1,043 508 949 839 438

3................................................... 35.0 29.4 2,351 1,812 1,195 1,910 1,510 848 1,319 1,213 786

4................................................... 19.2 18.4 2,895 2,283 1,567 2,423 2,089 1,150 1,616 1,483 913

5 or More...................................... 12.2 12.0 3,558 2,812 2,074 3,064 2,461 1,661 Q Q Q

Full Bathrooms

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

1................................................... 54.9 35.1 2,092 1,542 698 1,533 1,183 454 798 700 244

2................................................... 45.9 41.6 2,559 2,021 1,519 1,981 1,672 1,249 1,206 1,087 761

3 or More...................................... 9.9 9.7 3,715 3,118 2,403 3,128 2,797 1,959 Q Q Q

Half Bathrooms

None............................................. 79.4 57.6 2,247 1,701 1,090 1,532 1,229 539 1,040 924 569

1................................................... 29.7 27.0 3,007 2,455 1,701 2,118 1,762 1,112 1,207 1,131 403

2 or More...................................... 2.0 1.9 3,575 2,877 2,146 QQQQQQ

Basement (in Single-Family Homes and

Apartments in 2-4 Unit Buildings)

Yes............................................... 35.5 34.0 3,174 2,428 1,466 2,247 1,731 820 N N N

No................................................ 51.9 45.7 2,051 1,641 1,199 1,383 1,224 822 N N N

Not Asked (Mobile Home or Apartment

Building with 5 or More Units)....... 23.7 6.9 NNNNNN 1,055 944 554

Finished Basement

Yes........................................... 16.7 16.2 3,262 2,783 1,879 2,241 2,101 1,191 N N N

No............................................. 18.7 17.7 3,091 2,092 1,076 2,252 1,466 554 N N N

No Basement............................ 51.9 45.7 2,051 1,641 1,199 1,383 1,224 822 N N N

Not Asked................................. 23.7 6.9 NNNNNN 1,055 944 554

Number of Finished Rooms

in Basement

1............................................... 8.1 7.9 3,100 2,531 1,498 1,891 1,858 860 N N N

2............................................... 3.8 3.7 3,244 2,768 1,974 1,839 1,603 1,380 N N N

3 or More.................................. 4.8 4.6 3,566 3,243 2,475 2,897 2,669 1,516 N N N

Basement Unfinished................ 18.7 17.7 3,091 2,092 1,076 2,252 1,466 554 N N N

No Basement............................ 51.9 45.7 2,051 1,641 1,199 1,383 1,224 822 N N N

Not Asked................................. 23.7 6.9 NNNNNN 1,055 944 554

Heated Basement

Yes........................................... 20.7 20.0 3,179 2,900 1,863 2,115 2,049 1,125 N N N

All.......................................... 14.3 13.8 3,231 3,053 2,048 2,055 2,067 1,139 N N N

Part....................................... 6.4 6.2 3,064 2,560 1,453 2,259 2,008 1,091 N N N

Basement Not Heated............... 14.8 14.0 3,167 1,737 884 2,407 1,346 451 N N N

No Basement............................ 51.9 45.7 2,051 1,641 1,199 1,383 1,224 822 N N N

Not Asked................................. 23.7 6.9 NNNNNN 1,055 944 554

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Heated Cooled

Single-Family Detached

Total1

Average Square Feet per Housing Unit

Table HC1.2.3 Living Space Characteristics by Average Floorspace--

 Single-Family Housing Units and Mobile Homes, 2005

Single-Family Attached Mobile Homes

Total1 Housing Unit Characteristics Heated Cooled Total Heated Cooled 1

SingleFamily

and

Mobile

Homes

(millions)

 Housing 

Units 

(millions)

Air-Conditioned Basement

Yes........................................... 11.4 11.2 3,273 3,072 2,836 2,201 2,217 1,888 N N N

All.......................................... 8.4 8.3 3,232 3,096 2,893 2,379 2,433 2,258 N N N

Part....................................... 3.0 2.8 3,400 2,997 2,661 1,802 1,735 1,061 N N N

Basement Not Cooled............... 24.1 22.8 3,125 2,105 779 2,266 1,537 394 N N N

No Basement............................ 51.9 45.7 2,051 1,641 1,199 1,383 1,224 822 N N N

Not Asked................................. 23.7 6.9 NNNNNN 1,055 944 554

Attic (in Single-Family Homes and

Apartments in 2-4 Unit Buildings s)

Yes............................................... 22.8 22.7 3,614 2,136 1,511 2,675 1,612 907 N N N

No................................................ 64.6 56.9 2,054 1,899 1,224 1,664 1,452 806 N N N

Not Asked (Mobile Home or Apartment

Building with 5 or More Units)... 23.7 6.9 NNNNNN 1,055 944 554

Finished Attic

Yes........................................... 2.7 2.7 3,866 2,535 1,488 1,956 1,105 Q N N N

No............................................. 20.1 20.0 3,583 2,086 1,514 2,886 1,761 1,060 N N N

No Attic..................................... 64.6 56.9 2,054 1,899 1,224 1,664 1,452 806 N N N

Not Asked................................. 23.7 6.9 NNNNNN 1,055 944 554

Number of Finished Rooms in Attic

1............................................... 2.2 2.2 3,816 2,454 1,427 Q Q Q N N N

2 or More.................................. 0.5 0.5 4,124 2,952 1,806 Q Q Q N N N

Attic Unfinished......................... 20.1 20.0 3,583 2,086 1,514 2,886 1,761 1,060 N N N

No Attic..................................... 64.6 56.9 2,054 1,899 1,224 1,664 1,452 806 N N N

Not Asked................................. 23.7 6.9 NNNNNN 1,055 944 554

Heated Attic

Yes........................................... 1.3 1.3 3,838 3,460 2,494 Q Q Q N N N

All.......................................... 1.0 1.0 3,611 3,395 2,245 Q Q Q N N N

Part....................................... 0.3 0.3 4,432 3,628 3,145 Q Q Q N N N

Attic Not Heated........................ 21.5 21.4 3,601 2,058 1,453 2,775 1,661 990 N N N

No Attic..................................... 64.6 56.9 2,054 1,899 1,224 1,664 1,452 806 N N N

Not Asked................................. 23.7 6.9 NNNNNN 1,055 944 554

Air-Conditioned Attic

Yes........................................... 1.0 0.9 4,099 3,711 3,177 Q Q Q N N N

All.......................................... 0.7 0.6 4,045 3,729 3,050 Q Q Q N N N

Part....................................... 0.3 0.3 QQQQQQN NN

Attic Not Cooled........................ 21.9 21.8 3,593 2,067 1,438 2,715 1,633 931 N N N

No Attic..................................... 64.6 56.9 2,054 1,899 1,224 1,664 1,452 806 N N N

Not Asked................................. 23.7 6.9 NNNNNN 1,055 944 554

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Heated Cooled

Single-Family Detached

Total1

Average Square Feet per Housing Unit

Table HC1.2.3 Living Space Characteristics by Average Floorspace--

 Single-Family Housing Units and Mobile Homes, 2005

Single-Family Attached Mobile Homes

Total1 Housing Unit Characteristics Heated Cooled Total Heated Cooled 1

SingleFamily

and

Mobile

Homes

(millions)

 Housing 

Units 

(millions)

Garage/Carport

(Single-Family and Mobile Homes)

Yes............................................... 61.5 61.5 2,609 2,094 1,467 2,035 1,726 1,058 1,251 1,107 771

Attached................................... 41.8 41.8 2,645 2,229 1,688 2,055 1,791 1,188 Q Q Q

1-Car Garage........................ 9.5 9.5 2,137 1,693 1,062 1,554 1,459 874 N N N

2-Car Garage........................ 28.4 28.4 2,710 2,289 1,789 2,332 1,953 1,367 Q Q Q

3 or More Car Garage........... 3.8 3.8 3,315 3,006 2,362 Q Q Q N N N

Detached.................................. 15.2 15.2 2,637 1,878 977 2,052 1,612 574 1,208 1,113 801

1-Car Garage........................ 6.1 6.1 2,372 1,572 712 2,346 1,913 Q Q Q Q

2-Car Garage........................ 7.8 7.8 2,793 2,057 1,105 1,767 1,308 Q Q Q Q

3 or More Car Garage........... 1.4 1.4 2,887 2,180 1,384 QQQQQQ

Carport (only)............................ 4.7 4.7 2,105 1,438 943 Q Q Q 1,227 1,027 659

No................................................ 25.1 25.1 2,216 1,539 761 1,582 1,216 574 1,001 899 493

Not Asked (Apartments)............... 24.5 N NNNNNNNNN

 1. Excludes floorspace in unheated garages. 

 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.

 -- = Data Not Applicable.

 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