Total.............................................................. 111.1 2,171 1,618 1,031 845 630 401

Census Region and Division

Northeast................................................... 20.6 2,334 1,664 562 911 649 220

New England.......................................... 5.5 2,472 1,680 265 1,057 719 113

Middle Atlantic........................................ 15.1 2,284 1,658 670 864 627 254

Midwest...................................................... 25.6 2,421 1,927 1,360 981 781 551

East North Central.................................. 17.7 2,483 1,926 1,269 999 775 510

West North Central................................. 7.9 2,281 1,930 1,566 940 796 646

South.......................................................... 40.7 2,161 1,551 1,295 856 615 513

South Atlantic......................................... 21.7 2,243 1,607 1,359 896 642 543

East South Central................................. 6.9 2,137 1,544 1,238 884 638 512

West South Central................................ 12.1 2,028 1,455 1,211 774 555 462

West........................................................... 24.2 1,784 1,366 638 647 496 231

Mountain................................................. 7.6 1,951 1,649 811 732 619 304

Pacific..................................................... 16.6 1,708 1,238 559 610 442 200

Urban/Rural Location (Self-Reported)

City............................................................. 47.1 1,781 1,309 802 704 518 317

Town.......................................................... 19.0 2,167 1,588 931 841 617 362

Suburbs...................................................... 22.7 2,688 2,023 1,475 997 751 547

Rural.......................................................... 22.3 2,472 1,886 1,148 982 749 456

Climate Zone2

Less than 2,000 CDD and--

Greater than 7,000 HDD......................... 10.9 2,534 2,065 977 1,019 830 393

5,500 to 7,000 HDD................................ 26.1 2,346 1,726 876 937 689 350

4,000 to 5,499 HDD................................ 27.3 2,205 1,735 1,081 848 667 416

Less than 4,000 HDD............................. 24.0 1,966 1,375 945 752 526 362

2000 CDD or More and--

Less than 4,000 HDD............................. 22.8 1,971 1,398 1,265 759 539 487

Type of Housing Unit

Single-Family Detached.......................... 72.1 2,720 1,970 1,310 998 723 481

Single-Family Attached........................... 7.6 1,941 1,475 821 783 596 331

Apartments in 2-4 Unit Buildings............. 7.8 1,090 902 341 451 373 141

Apartments in 5 or More Unit Buildings... 16.7 872 780 441 427 382 216

Mobile Homes......................................... 6.9 1,059 944 554 429 382 224

Ownership of Housing Unit

Owned....................................................... 78.1 2,586 1,902 1,278 997 733 493

Single-Family Detached.......................... 64.1 2,813 2,039 1,392 1,053 763 521

Single-Family Attached........................... 4.2 2,400 1,837 1,094 1,017 778 464

Apartments in 2-4 Unit Buildings............. 1.8 1,604 1,320 458 718 591 205

Apartments in 5 or More Unit Buildings... 2.3 1,116 940 829 676 570 502

Mobile Homes......................................... 5.7 1,099 990 593 460 414 248

Rented....................................................... 33.0 1,188 947 445 473 378 178

Single-Family Detached.......................... 8.0 1,983 1,419 661 626 448 209

Single-Family Attached........................... 3.4 1,383 1,037 488 528 396 186

Apartments in 2-4 Unit Buildings............. 5.9 930 772 305 376 312 123

Apartments in 5 or More Unit Buildings... 14.4 833 754 379 396 359 181

Mobile Homes......................................... 1.2 866 722 367 305 254 129

Household Member

Average Square Feet per--

Table HC1.1.2 Housing Unit Characteristics by Average Floorspace, 2005 

Total1 Heated Cooled Total Heated Cooled

 Housing 

Units 

(millions)

Housing Unit

Housing Unit Characteristics

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Household Member

Average Square Feet per--

Table HC1.1.2 Housing Unit Characteristics by Average Floorspace, 2005 

Total1 Heated Cooled Total Heated Cooled

 Housing 

Units 

(millions)

Housing Unit

Housing Unit Characteristics

Year of Construction

Before 1940................................................ 14.7 2,325 1,586 473 945 644 192

1940 to 1949.............................................. 7.4 2,047 1,456 564 840 598 231

1950 to 1959.............................................. 12.5 2,052 1,458 761 845 600 313

1960 to 1969.............................................. 12.5 1,969 1,470 906 745 556 343

1970 to 1979.............................................. 18.9 1,863 1,404 914 749 565 368

1980 to 1989.............................................. 18.6 1,992 1,569 1,152 791 623 458

1990 to 1999.............................................. 17.3 2,501 1,959 1,549 892 698 552

2000 to 2005.............................................. 9.2 2,827 2,117 1,851 1,023 766 670

Number of Stories in

Single-Family Homes

1 Story........................................................ 46.7 2,178 1,520 1,054 864 602 418

2 Stories..................................................... 28.0 3,248 2,409 1,518 1,105 820 516

3 or More Stories........................................ 2.5 3,998 3,105 1,606 1,255 975 504

Split-level................................................... 1.9 3,447 3,028 2,177 1,120 984 708

Other.......................................................... 0.5 2,712 2,223 1,404 1,101 903 570

Not Asked.................................................. 31.4 967 846 441 434 380 198

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors............................................... 8.2 875 772 448 426 376 218

3 or 4 Floors............................................... 6.0 875 800 448 409 375 210

5 to 10 Floors............................................. 1.6 796 729 285 438 401 157

11 to 20 Floors........................................... 0.6 898 761 Q 436 369 Q

More than 20 Floors................................... Q 1,009 862 938 873 745 811

Not Asked.................................................. 94.4 2,401 1,767 1,136 902 664 427

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel).................. 35.3 2,227 1,691 1,068 847 643 406

Brick........................................................... 31.3 2,213 1,670 1,172 903 681 478

Wood......................................................... 20.0 2,269 1,651 826 886 645 323

Stucco........................................................ 14.8 1,794 1,338 858 652 486 312

Concrete/Concrete Block............................ 5.3 1,811 1,267 1,199 754 527 499

Composition (Shingle)................................ 1.9 2,366 1,545 678 887 579 254

Stone.......................................................... 1.0 3,551 2,416 1,608 1,418 965 642

Other.......................................................... 1.5 2,500 1,966 1,143 1,035 814 473

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement................................................... 35.5 3,177 2,301 1,345 1,185 859 502

Crawlspace................................................ 25.1 2,372 1,711 999 927 669 390

Concrete Slab............................................ 40.2 2,364 1,734 1,299 845 620 464

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units).............................. 23.7 926 828 474 428 382 219

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Household Member

Average Square Feet per--

Table HC1.1.2 Housing Unit Characteristics by Average Floorspace, 2005 

Total1 Heated Cooled Total Heated Cooled

 Housing 

Units 

(millions)

Housing Unit

Housing Unit Characteristics

Fuels Used for Any Use

(more than one may apply)

Electricity.................................................... 111.1 2,171 1,618 1,031 845 630 401

Natural Gas................................................ 69.5 2,246 1,688 1,080 852 640 409

Wood......................................................... 14.4 2,822 2,117 1,325 1,066 799 500

Fuel Oil....................................................... 8.4 2,693 1,840 386 1,067 729 153

LPG............................................................ 12.6 2,631 1,960 1,197 1,003 747 456

Kerosene.................................................... 1.7 2,036 1,423 564 882 616 244

Solar........................................................... 0.2 2,132 1,570 Q 820 603 Q

Main Heating Fuel

Natural Gas................................................ 58.2 2,273 1,712 1,095 873 658 421

Electricity.................................................... 33.7 1,885 1,429 1,142 745 565 451

Fuel Oil....................................................... 7.7 2,714 1,865 387 1,091 750 156

LPG............................................................ 6.0 2,307 1,795 1,131 920 716 451

Wood......................................................... 2.9 2,397 1,853 685 878 679 251

Kerosene.................................................... 0.7 1,542 966 Q 803 504 Q

Solar........................................................... QQQQQQQ

Other ......................................................... QQQQQQQ

None.......................................................... 1.3 1,175 Q Q 418 Q Q

Natural Gas Available

in Neighborhood

Yes............................................................. 80.5 2,194 1,645 1,043 844 633 401

Actually Use Natural Gas........................ 69.5 2,246 1,688 1,080 852 640 409

Do Not Use Natural Gas......................... 11.1 1,867 1,379 814 791 584 345

No.............................................................. 30.6 2,111 1,548 999 848 622 401

 1. Excludes floorspace in unheated garages. The total average square footage per housing unit for the 2001 RECS was reported as 

1,975 square feet. This figure excluded unheated garages and for most housing units, living space in attics. The average total square 

footage for housing units in the 2005 RECS, reported in this table is 2,171 square feet, includes attic living space for all housing units. The 

only available figures that permit comparison of total square footage for both survey years would exclude all garage floorspace and attic 

floorspace in all housing units--for 2001 the total square footage was 2,005 and for 2005 the total was 2,029 square feet.

 2. 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