Table B1. Summary Table: Total and Means of Floorspace, Number of Workers, and Hours of Operation for Non-Mall Buildings, 2003
	Number of Buildings (thousand)	Total Floorspace (million square feet)	Total Workers in All Buildings (thousand)	Mean Square Feet per Building (thousand)	Mean Square Feet per Worker	Mean Hours per Week
All Buildings*................................	4,645	64,783	72,807	13.9	890	61
Building Floorspace
(Square Feet)
1,001 to 5,000 ................................	2,552	6,789	9,936	2.7	683	57
5,001 to 10,000 ..............................	889	6,585	7,512	7.4	877	61
10,001 to 25,000 ............................	738	11,535	10,787	15.6	1,069	67
25,001 to 50,000 ............................	241	8,668	8,881	35.9	976	72
50,001 to 100,000 ..........................	129	9,057	8,432	70.4	1,074	80
100,001 to 200,000 ........................	65	9,064	11,632	138.8	779	89
200,001 to 500,000 ........................	25	7,176	6,883	289.0	1,043	100
Over 500,000 .................................	7	5,908	8,744	896.1	676	115
Principal Building Activity
Education .......................................	386	9,874	12,489	25.6	791	50
Food Sales .....................................	226	1,255	1,430	5.6	877	107
Food Service .................................	297	1,654	3,129	5.6	528	86
Health Care ....................................	129	3,163	6,317	24.6	501	59
Inpatient .......................................	8	1,905	3,716	241.4	513	168
Outpatient ....................................	121	1,258	2,600	10.4	484	52
Lodging ..........................................	142	5,096	2,457	35.8	2,074	167
Retail (Other Than Mall)..................	443	4,317	3,463	9.7	1,246	59
Office .............................................	824	12,208	28,154	14.8	434	55
Public Assembly ............................	277	3,939	2,395	14.2	1,645	50
Public Order and Safety ................	71	1,090	1,347	15.5	809	103
Religious Worship ..........................	370	3,754	1,706	10.1	2,200	32
Service ..........................................	622	4,050	3,667	6.5	1,105	55
Warehouse and Storage ...............	597	10,078	4,369	16.9	2,306	66
Other ..............................................	79	1,738	1,819	21.9	956	63
Vacant ...........................................	182	2,567	Q	14.1	Q	Q
Year Constructed
Before 1920 ...................................	330	3,769	3,045	11.4	1,238	48
1920 to 1945 ..................................	527	6,871	6,122	13.0	1,122	51
1946 to 1959 ..................................	562	7,045	6,646	12.5	1,060	52
1960 to 1969 ..................................	579	8,101	8,708	14.0	930	63
1970 to 1979 ..................................	731	10,772	12,597	14.7	855	65
1980 to 1989 ..................................	707	10,332	15,032	14.6	687	62
1990 to 1999 ..................................	876	12,360	16,181	14.1	764	71
2000 to 2003 ..................................	334	5,533	4,476	16.6	1,236	68
Census Region and Division
Northeast .......................................	726	12,905	14,908	17.8	866	67
New England ...............................	233	2,964	3,155	12.7	939	71
Middle Atlantic ..............................	493	9,941	11,752	20.1	846	65
Midwest .........................................	1,266	17,080	16,373	13.5	1,043	59
East North Central ........................	696	11,595	11,489	16.7	1,009	61
West North Central ......................	571	5,485	4,883	9.6	1,123	58
South .............................................	1,775	23,489	27,078	13.2	867	60
South Atlantic ..............................	874	12,258	16,757	14.0	732	60
East South Central .......................	348	3,393	3,060	9.8	1,109	61
West South Central ......................	553	7,837	7,261	14.2	1,079	60
West ..............................................	878	11,310	14,448	12.9	783	62
Mountain ......................................	299	3,675	4,281	12.3	858	64
Pacific ..........................................	580	7,635	10,168	13.2	751	61
Climate Zone: 30-Year Average
Under 2,000 CDD and --
More than 7,000 HDD ...................	855	10,622	10,305	12.4	1,031	60
5,500-7,000 HDD .........................	1,173	17,335	17,340	14.8	1,000	63
4,000-5,499 HDD .........................	673	11,504	14,007	17.1	821	66
Fewer than 4,000 HDD ................	1,276	15,739	17,178	12.3	916	57
2,000 CDD or More and --
Fewer than 4,000 HDD ................	669	9,584	13,978	14.3	686	62
Number of Floors
One ................................................	3,136	25,981	23,710	8.3	1,096	60
Two ...............................................	1,031	16,270	16,170	15.8	1,006	62
Three .............................................	339	7,501	7,966	22.1	942	63
Four to Nine ...................................	128	10,085	15,910	78.7	634	87
Ten or More ...................................	12	4,947	9,051	420.0	547	112
Elevators and Escalators
(more than one may apply)
Any Elevators ................................	309	24,617	36,562	79.7	673	78
Number of Elevators
One ..............................................	208	8,221	9,079	39.5	905	67
Two to Five ..................................	88	10,129	15,894	115.1	637	98
Six or More ..................................	13	6,268	11,589	491.5	541	115
Any Escalators ..............................	6	2,350	4,048	388.7	580	84
Number of Workers (main shift)
Fewer than 5 .................................	2,653	15,492	4,633	5.8	3,344	56
5 to 9 ..............................................	778	6,166	5,080	7.9	1,214	63
10 to 19 ..........................................	563	7,803	7,305	13.9	1,068	66
20 to 49 ..........................................	398	10,989	11,780	27.6	933	73
50 to 99 ..........................................	147	7,934	9,545	53.8	831	75
100 to 249 ......................................	77	6,871	11,093	89.7	619	90
250 or More ...................................	30	9,528	23,371	320.4	408	99
Weekly Operating Hours
Fewer than 40 ...............................	1,002	6,863	3,293	6.9	2,084	13
40 to 48 ..........................................	1,117	11,622	13,765	10.4	844	42
49 to 60 ..........................................	1,062	15,723	19,146	14.8	821	54
61 to 84 ..........................................	591	10,334	11,630	17.5	889	74
85 to 167 ........................................	400	7,092	10,473	17.7	677	107
Open Continuously ........................	475	13,149	14,499	27.7	907	168
Ownership and Occupancy
Nongovernment Owned ................	4,011	49,421	53,339	12.3	927	62
Owner Occupied .........................	1,841	23,591	27,111	12.8	870	60
Nonowner Occupied ...................	2,029	23,914	26,228	11.8	912	69
Unoccupied ..................................	141	1,916	N	13.6	N	0
Government Owned ......................	635	15,363	19,468	24.2	789	55
Federal .........................................	46	1,956	2,432	42.9	804	66
State ............................................	164	3,808	7,204	23.2	529	57
Local ............................................	425	9,599	9,832	22.6	976	53
Vacancy Status
Completely Vacant .........................	157	2,161	N	13.8	N	0
Mostly Vacant ................................	25	406	Q	16.1	Q	49
Partially Vacant ..............................	548	12,382	16,997	22.6	729	67
Not At All Vacant ...........................	3,915	49,834	55,746	12.7	894	63
Number of Establishments
One ................................................	3,754	45,144	44,071	12.0	1,024	64
2 to 5 ..............................................	643	10,960	13,001	17.1	843	61
6 to 10 ............................................	55	1,958	Q	35.7	303	68
11 to 20 ..........................................	23	1,951	3,342	85.7	584	66
More than 20 ..................................	14	2,609	5,930	181.1	440	71
Currently Unoccupied ....................	157	2,161	N	13.8	N	0
Predominant Exterior
Wall Material
Brick, Stone or Stucco ...................	2,044	32,817	36,770	16.1	892	63
Concrete (Block or Poured) ...........	786	10,832	10,463	13.8	1,035	61
Concrete Panels ............................	131	6,559	10,891	50.2	602	67
Siding or Shingles ..........................	779	4,120	4,567	5.3	902	58
Metal Panels ...................................	825	7,912	6,235	9.6	1,269	59
Window Glass ...............................	17	1,024	1,910	60.1	536	78
Other ..............................................	47	1,113	1,541	23.8	722	62
No One Major Type ........................	18	406	430	22.9	945	53
Predominant Roof Material
Built-Up ..........................................	1,036	21,170	25,828	20.4	820	63
Shingles (Not Wood) ......................	1,325	10,195	10,462	7.7	974	59
Metal Surfacing ..............................	1,288	11,944	8,461	9.3	1,412	58
Synthetic or Rubber .......................	511	14,730	20,783	28.8	709	70
Slate or Tile ....................................	263	2,462	3,021	9.4	815	60
Wooden Materials ..........................	122	887	973	7.3	912	60
Concrete ........................................	61	2,231	1,958	36.7	1,139	68
Other ..............................................	16	598	652	38.1	917	62
No One Major Type ........................	25	565	669	22.7	844	84
Renovations in Buildings
Constructed Before 1980
(more than one may apply)
Any Type of Renovation
Since 1980 ....................................	1,018	17,844	20,481	17.5	871	61
Addition or Annex .......................	256	6,551	6,668	25.6	982	68
Reduction In Floorspace .............	22	1,012	1,078	46.1	939	78
Cosmetic Improvements ..............	741	13,119	15,890	17.7	826	62
Wall or Roof Replacement ..........	370	8,070	10,121	21.8	797	60
Interior Wall
Re-Configuration ........................	411	8,518	11,188	20.7	761	65
HVAC Equipment Upgrade ..........	442	10,768	13,849	24.4	778	64
Lighting Upgrade .........................	455	10,275	12,452	22.6	825	62
Window Replacement .................	310	6,354	7,462	20.5	851	63
Plumbing System Upgrade ..........	315	7,144	8,764	22.7	815	68
Insulation Upgrade ......................	227	4,015	5,019	17.7	800	56
Other Renovation ........................	19	523	476	27.3	1,097	75
No Renovations Since 1980 ..........	1,710	18,714	16,637	10.9	1,125	55
Building Newer than 1980 .............	1,917	28,225	35,689	14.7	791	67
Energy Sources (more than
one may apply)
Electricity .......................................	4,404	63,307	72,708	14.4	871	62
Natural Gas ....................................	2,391	43,468	51,956	18.2	837	65
Fuel Oil ...........................................	451	15,157	19,625	33.6	772	68
District Heat ...................................	67	5,443	10,190	81.4	534	79
District Chilled Water ......................	33	2,853	7,189	86.7	397	79
Propane .........................................	502	7,076	5,858	14.1	1,208	60
Wood .............................................	62	289	262	4.6	1,105	46
Coal ................................................	Q	Q	Q	Q	Q	Q
Solar ..............................................	Q	Q	Q	Q	Q	Q
Other ..............................................	61	909	1,190	15.0	764	64
Space-Heating Energy Sources
(more than one may apply)
Electricity .......................................	1,766	28,600	33,903	16.2	844	66
Natural Gas ....................................	2,165	36,959	40,933	17.1	903	62
Fuel Oil ...........................................	360	5,988	5,386	16.6	1,112	58
District Heat ...................................	65	5,198	9,939	79.7	523	78
Propane .........................................	372	3,204	3,002	8.6	1,067	55
Wood .............................................	59	261	191	4.4	1,367	45
Coal ................................................	Q	Q	Q	Q	Q	Q
Solar ..............................................	Q	Q	Q	Q	Q	Q
Other ..............................................	41	475	527	11.6	901	61
Primary Space-Heating
Energy Source
Electricity .......................................	1,258	15,996	19,392	12.7	825	65
Natural Gas ....................................	1,999	32,970	36,773	16.5	897	61
Fuel Oil ...........................................	282	3,818	2,669	13.5	1,430	58
District Heat ...................................	63	4,907	9,729	77.4	504	77
Propane .........................................	308	1,955	1,915	6.4	1,021	53
Wood .............................................	Q	Q	Q	Q	Q	Q
Coal ................................................	Q	Q	Q	Q	Q	Q
Solar...............................................	N	N	N	N	N	N
Other ..............................................	Q	Q	Q	Q	Q	Q
Cooling Energy Sources
(more than one may apply)
Electricity .......................................	3,589	54,321	63,221	15.1	859	64
Natural Gas ....................................	17	1,018	1,342	58.9	759	72
District Chilled Water ......................	33	2,853	7,189	86.7	397	79
Water-Heating Energy Sources
(more than one may apply)
Electricity .......................................	1,910	27,490	32,638	14.4	842	59
Natural Gas ....................................	1,445	28,820	35,740	19.9	806	70
Fuel Oil ...........................................	94	1,880	2,036	19.9	923	81
District Heat ...................................	27	3,088	4,193	113.1	736	95
Propane .........................................	128	1,422	1,527	11.1	931	80
Cooking Energy Sources
(more than one may apply)
Electricity .......................................	410	13,161	16,034	32.1	821	81
Natural Gas ....................................	457	15,438	19,011	33.8	812	85
Propane .........................................	108	1,460	1,866	13.6	782	77
Energy End Uses (more than
one may apply)
Buildings with Space Heating ........	3,982	60,028	70,778	15.1	848	61
Buildings with Cooling ....................	3,625	56,940	70,153	15.7	812	64
Buildings with Water Heating .........	3,472	56,478	69,224	16.3	816	65
Buildings with Cooking ...................	801	22,237	27,242	27.8	816	81
Buildings with Manufacturing ........	119	3,138	2,879	26.5	1,090	54
Buildings with Electricity.................
Generation ....................................	149	12,821	19,273	85.9	665	99
Percent of Floorspace Heated
Not Heated .....................................	663	4,756	2,029	7.2	2,344	60
1 to 50 ............................................	523	6,850	4,135	13.1	1,656	56
51 to 99 ..........................................	498	8,107	9,618	16.3	843	64
100 .................................................	2,962	45,071	57,024	15.2	790	62
Percent of Floorspace Cooled
Not Cooled .....................................	1,020	7,843	2,654	7.7	2,956	52
1 to 50 ............................................	985	16,598	11,094	16.8	1,496	60
51 to 99 ..........................................	629	13,211	16,510	21.0	800	70
100 .................................................	2,011	27,132	42,549	13.5	638	63
Percent Lit When Open
Zero ...............................................	47	293	Q	6.3	Q	115
1 to 50 ............................................	929	10,203	4,414	11.0	2,312	64
51 to 99 ..........................................	1,108	18,288	26,635	16.5	687	60
100 .................................................	2,176	32,789	41,552	15.1	789	64
Building Never Open/
Electricity Not Used .......................	386	3,210	111	8.3	28,892	34
Percent Lit When Closed
Zero ...............................................	1,964	17,385	18,080	8.9	962	42
1 to 50 ............................................	1,882	30,948	37,362	16.4	828	58
51 to 100 ........................................	136	2,093	2,777	15.4	754	59