Table HC1-4a.  Housing Unit Characteristics by Type of Housing Unit,
                Million U.S. Households, 2001 - PRELIMINARY DATA  
______________________________________________________________________________________________________________
                                    |         |                                                       |       
                                    |         |                  Type of Housing Unit                 |       
                                    |         |_______________________________________________________|       
                                    |         |             |                           |             |       
                                    |         |             |        Multifamily        |             |       
                                    |         |             |___________________________|             |       
                                    |         |             |             |             |             |       
            Housing Unit            |  Total  |Single-Family| Two to Four | Five or More| Mobile Home |       
          Characteristics           |         |             |    Units    |    Units    |             |       
                                    |_________|_____________|_____________}_____________|_____________|  RSE    
                                    |         |             |             |             |             |  Row  
         RSE Column Factor:         |   0.5   |     0.5     |     1.5     |     1.3     |     1.9     |Factors
____________________________________|_________|_____________|_____________|_____________|_____________|_______
                                                                                                      |       
Total...............................   107.0        73.7           9.5          17.0           6.8    |   4.5 
                                                                                                      |       
Census Region and Division                                                                            |       
  Northeast.........................    20.3        12.0           3.1           4.5           0.7    |   8.4 
    New England.....................     5.4         3.5           1.1           0.6           0.2    |  15.7 
    Middle Atlantic.................    14.8         8.5           2.0           3.8           0.5    |  10.0 
  Midwest...........................    24.5        18.3           2.2           2.8           1.2    |   8.7 
    East North Central..............    17.1        12.4           1.8           2.0           0.8    |   9.3 
    West North Central..............     7.4         5.8           0.4           0.8           0.4    |  20.2 
  South.............................    38.9        28.6           2.6           4.5           3.3    |   8.9 
    South Atlantic..................    20.3        14.8           1.4           2.6           1.5    |  14.2 
    East South Central..............     6.8         5.1           Q             0.4           0.9    |  12.8 
    West South Central..............    11.8         8.7           0.7           1.5           0.9    |  10.6 
  West..............................    23.3        14.8           1.6           5.3           1.7    |   9.3 
    Mountain........................     6.7         4.6           0.5           0.9           0.8    |  16.8 
    Pacific.........................    16.6        10.2           1.1           4.4           0.9    |  11.2 
                                                                                                      |       
Metropolitan Statistical Area                                                                         |       
  Urban.............................    85.5        57.2           8.1          16.1           4.1    |   5.4 
    Central City....................    40.0        24.6           4.9           9.2           1.4    |   8.7 
    Suburban........................    45.5        32.6           3.2           6.9           2.8    |   8.7 
  Rural.............................    21.5        16.5           1.4           0.9           2.7    |  10.3 
                                                                                                      |       
Climate Zone1                                                                                         |       
  Fewer than 2,000 CDD and--                                                                          |       
    More than 7,000 HDD.............     9.4         7.3           0.8           0.8           0.5    |  24.1 
    5,500 to 7,000 HDD..............    29.2        19.6           3.6           4.4           1.7    |  11.9 
    4,000 to 5,499 HDD..............    23.7        15.6           2.1           4.9           1.1    |  14.6 
    Fewer than 4,000 HDD............    20.6        14.5           1.2           3.6           1.3    |  15.1 
  2,000 CDD or More and --                                                                            |       
  Fewer than 4,000 HDD..............    24.0        16.7           1.7           3.4           2.2    |  12.5 
                                                                                                      |       
Year of Construction                                                                                  |       
  1939 or Before....................    19.0        12.8           3.3           2.7           Q      |   8.5 
  1940 to 1949......................     7.6         5.9           0.8           0.9           Q      |  13.1 
  1950 to 1959......................    14.2        11.5           1.1           1.4           Q      |   9.8 
  1960 to 1969......................    13.8         9.6           0.9           2.7           0.6    |  10.4 
  1970 to 1979......................    18.8        11.3           1.3           4.3           1.8    |   8.7 
  1980 to 1989......................    18.2        11.1           1.6           3.5           2.0    |  10.3 
  1990 to 1999......................    14.5        10.7           0.5           1.5           1.9    |  16.6 
  2000 to 20012.....................     0.9         0.7           Q             Q             Q      |  35.7 
                                                                                                      |       
Urban/Rural Location3                                                                                 |       
  City..............................    49.9        30.2           5.9          11.9           1.8    |   6.6 
  Town..............................    18.0        13.0           1.7           2.3           1.1    |  10.9 
  Suburbs...........................    21.2        16.5           1.5           2.5           0.8    |  11.7 
  Rural or Open Country.............    17.9        14.0           0.5           0.3           3.1    |  14.3 
                                                                                                      |       
Total Number of Rooms                                                                                 |       
(Excluding Bathrooms)                                                                                 |       
  1 or 2............................     2.6         0.2           0.4           1.8           Q      |  24.4 
  3 ................................     9.2         0.9           1.7           6.1           0.6    |  12.3 
  4 ................................    19.0         6.8           3.8           5.8           2.5    |   8.2 
  5 ................................    22.2        15.7           1.9           2.7           1.9    |   8.8 
  6 ................................    23.0        20.0           1.3           0.5           1.1    |  10.0 
  7 ................................    14.0        13.3           0.2           Q             0.5    |  12.6 
  8 ................................     9.8         9.6           Q             Q             Q      |  10.4 
  9 or More.........................     7.2         7.1           Q             Q             Q      |  14.5 
______________________________________________________________________________________________________|_______

See footnotes at end of table.

Table HC1-4a. Housing Unit Characteristics by Type of Housing Unit, Million U.S. Households, 2001 - PRELIMINARY DATA (Continued) ______________________________________________________________________________________________________________ | | | | | Type of Housing Unit | | |_______________________________________________________| | | | | | | | | Multifamily | | | | |___________________________| | | | | | | | Housing Unit | Total |Single-Family| Two to Four | Five or More| Mobile Home | Characteristics | | | Units | Units | | |_________|_____________|_____________}_____________|_____________| RSE | | | | | | Row RSE Column Factor: | 0.5 | 0.5 | 1.5 | 1.3 | 1.9 |Factors ____________________________________|_________|_____________|_____________|_____________|_____________|_______ | Bedrooms | None or 1......................... 13.6 2.0 2.6 8.5 0.4 | 11.0 2................................. 29.5 14.1 5.0 7.0 3.3 | 7.2 3................................. 44.1 38.1 1.7 1.4 2.9 | 8.5 4 or More......................... 19.8 19.4 Q Q 0.2 | 10.0 | Other Rooms | (Excluding Bathrooms) | None or 1......................... 4.2 1.0 0.5 2.2 0.5 | 15.3 2................................. 39.4 18.1 5.5 11.6 4.3 | 6.0 3................................. 35.0 27.7 2.9 3.1 1.4 | 7.6 4................................. 18.4 17.2 0.4 0.2 0.5 | 13.6 5 or More......................... 10.0 9.7 Q Q Q | 12.5 | Full Bathrooms | None or 1......................... 58.5 32.9 8.0 13.9 3.6 | 5.3 2................................. 41.2 33.6 1.4 3.0 3.1 | 9.0 3 or More......................... 7.3 7.2 Q Q Q | 16.3 | Half Bathrooms | None ............................. 76.6 47.3 8.2 15.0 6.1 | 4.1 1................................. 27.9 24.1 1.2 2.0 0.7 | 9.6 2 or More......................... 2.5 2.4 Q Q Q | 17.1 | Number of Stories | Single-Family Homes............... 73.7 73.7 -- -- -- | 3.1 1 Story......................... 44.2 44.2 -- -- -- | 4.4 2 Stories....................... 26.4 26.4 -- -- -- | 7.0 3 or More Stories............... 1.6 1.6 -- -- -- | 27.0 Split-Level..................... 1.3 1.3 -- -- -- | 31.7 Other........................... Q -- -- -- -- | NF Apartment Buildings (2 to 4 units) 9.5 -- 9.5 -- -- | 8.2 1 Story......................... 4.5 -- 4.5 -- -- | 11.9 2 Stories....................... 3.9 -- 3.9 -- -- | 10.0 3 or More Stories............... 1.1 -- 1.1 -- -- | 24.5 Split-Level..................... Q -- -- -- -- | NF Other........................... Q -- -- -- -- | NF Mobile Homes...................... 6.8 -- -- -- 6.8 | 10.2 | Number of Floors | Apartment Buildings | (5 or more units)................. 17.0 -- -- 17.0 -- | 7.7 1 or 2 Floors................... 8.9 -- -- 8.9 -- | 10.7 3 or 4 Floors................... 4.7 -- -- 4.7 -- | 16.7 5 to 10 Floors.................. 2.4 -- -- 2.4 -- | 18.3 11 to 20 Floors................. 0.9 -- -- 0.9 -- | 27.4 More than 20 Floors............. Q -- -- Q -- | NF | Foundation/Basement of Single and | Small Multifamily4 Homes (More than | one may apply) | Basement.......................... 39.1 35.4 3.8 -- -- | 7.0 Crawlspace........................ 24.2 23.2 1.0 -- -- | 10.6 Concrete Slab..................... 29.5 25.4 4.1 -- -- | 7.4 Not Asked (Mobile and Large | Multifamily4 Homes)............... 23.8 -- -- 17.0 6.8 | 6.3 ______________________________________________________________________________________________________|_______ See footnotes at end of table.

Table HC1-4a. Housing Unit Characteristics by Type of Housing Unit, Million U.S. Households, 2001 - PRELIMINARY DATA (Continued) ______________________________________________________________________________________________________________ | | | | | Type of Housing Unit | | |_______________________________________________________| | | | | | | | | Multifamily | | | | |___________________________| | | | | | | | Housing Unit | Total |Single-Family| Two to Four | Five or More| Mobile Home | Characteristics | | | Units | Units | | |_________|_____________|_____________}_____________|_____________| RSE | | | | | | Row RSE Column Factor: | 0.5 | 0.5 | 1.5 | 1.3 | 1.9 |Factors ____________________________________|_________|_____________|_____________|_____________|_____________|_______ | Heated Basement in Single and Small | Multifamily4 Homes | Yes............................... 28.4 26.1 2.2 -- -- | 8.1 All............................. 22.2 20.5 1.7 -- -- | 9.2 Part............................ 6.2 5.7 0.5 -- -- | 13.9 No................................ 10.8 9.2 1.5 -- -- | 10.9 No Basement....................... 44.0 38.3 5.7 -- -- | 6.1 Not Asked (Mobile and Large | Multifamily4 Homes)............... 23.8 -- -- 17.0 6.8 | 6.3 | Attic in Single and Small | Multifamily4 Homes | Yes............................... 24.6 23.1 1.5 -- -- | 11.1 Finished........................ 3.5 3.2 0.3 -- -- | 20.6 Unfinished...................... 21.1 19.9 1.2 -- -- | 12.1 No Attic.......................... 58.6 50.6 8.0 -- -- | 4.9 Not Asked (Mobile and Large | Multifamily4 Homes)............... 23.8 -- -- 17.0 6.8 | 6.3 | Heated Attic in Single and Small | Multifamily4 Homes | Yes............................... 4.5 4.2 0.3 -- -- | 19.6 Fully Heated.................... 2.7 2.4 0.2 -- -- | 22.8 Partially Heated................ 1.8 1.7 Q -- -- | 27.7 Attic Not Heated.................. 20.1 18.9 1.2 -- -- | 11.9 No Attic.......................... 58.6 50.6 8.0 -- -- | 4.9 Not Asked (Mobile and Large | Multifamily4 Homes)............... 23.8 -- -- 17.0 6.8 | 6.3 | Garage/Carport | (single family and mobile homes) | Yes............................... 58.4 56.4 -- -- 1.9 | 5.0 Attached........................ 37.1 36.9 -- -- Q | 6.5 1-Car Garage.................. 10.8 10.7 -- -- Q | 14.7 2-Car Garage.................. 24.1 23.9 -- -- Q | 8.2 3 or more Car Garage.......... 2.3 2.3 -- -- Q | 28.3 Detached........................ 17.0 16.0 -- -- 1.0 | 10.0 1-Car Garage.................. 6.9 6.5 -- -- 0.4 | 14.0 2-Car Garage.................. 8.7 8.2 -- -- 0.6 | 12.5 3 or more Car Garage.......... 1.4 1.3 -- -- Q | 28.4 Carport......................... 4.2 3.5 -- -- 0.7 | 18.0 No................................ 22.1 17.3 -- -- 4.9 | 8.6 Not Asked (Apartments)............ 26.5 -- 9.5 17.0 -- | 5.9 | Fuels Used For Any Use | (more than one often used) | Electricity....................... 107.0 73.7 9.5 17.0 6.8 | 4.5 Natural Gas....................... 66.7 48.4 6.2 9.8 2.3 | 6.0 Wood.............................. 14.5 13.2 0.4 0.3 0.6 | 16.2 Fuel Oil.......................... 8.7 6.5 0.6 1.4 0.3 | 16.8 LPG............................... 9.3 7.5 Q Q 1.6 | 14.2 Kerosene.......................... 2.8 2.2 Q Q 0.5 | 15.3 Solar ............................ 1.1 1.0 Q Q Q | 32.3 ______________________________________________________________________________________________________|_______ See footnotes at end of table.

Table HC1-4a. Housing Unit Characteristics by Type of Housing Unit, Million U.S. Households, 2001 - PRELIMINARY DATA (Continued) ______________________________________________________________________________________________________________ | | | | | Type of Housing Unit | | |_______________________________________________________| | | | | | | | | Multifamily | | | | |___________________________| | | | | | | | Housing Unit | Total |Single-Family| Two to Four | Five or More| Mobile Home | Characteristics | | | Units | Units | | |_________|_____________|_____________}_____________|_____________| RSE | | | | | | Row RSE Column Factor: | 0.5 | 0.5 | 1.5 | 1.3 | 1.9 |Factors ____________________________________|_________|_____________|_____________|_____________|_____________|_______ | Main Heating Fuel | Natural Gas....................... 58.7 43.8 5.6 7.2 2.2 | 6.4 Electricity....................... 31.8 17.5 3.2 8.1 3.0 | 8.8 Fuel Oil.......................... 8.1 6.0 0.6 1.3 0.2 | 17.0 LPG............................... 5.0 3.8 Q Q 1.0 | 18.7 Wood.............................. 2.0 1.9 Q Q Q | 25.1 Kerosene.......................... 0.7 0.4 Q Q 0.3 | 27.1 Solar............................. Q Q Q Q Q | NF Other/None........................ 0.6 0.3 Q 0.3 Q | 27.0 | Natural Gas Available in | Neighborhood | Yes............................... 77.7 54.4 7.4 12.6 3.4 | 5.3 No................................ 29.3 19.3 2.1 4.4 3.4 | 10.1 ______________________________________________________________________________________________________|_______ 1 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this report, the heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65 degrees Fahrenheit. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 2 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews were conducted. 3 Based on the household respondent's description rather than the Federal Government definition. 4 Small Multifamily Homes are homes that have two to four housing units; and Large Multifamily Homes are homes that have five or more housing units. -- = Data not applicable. NF = No applicable RSE row factor. Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled. Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. • See "Glossary" for definition of terms used in this report. Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.