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A Look at Office Buildings

How large are they?

How many employees are there?

Where are they located?

How old are they?

Who owns and occupies them?

Are they on multibuilding complexes?

How do they use energy and how much does it cost?

How do they use electricity?

How do they use natural gas?

What types of equipment do they use?

How do they measure up on conservation efforts?
 

  OFFICE BUILDINGS
How old are they?

The median age of office buildings in the U.S. in 1995 was 23.5 years, which means that half of them were built before 1972 and half were built since 1972.  Office buildings are slightly newer than the stock of commercial buildings as a whole, for which the median age was 30.5 years.

The age of commercial buildings as a whole differs by Census region, but the pattern is a bit different for office buildings; those in the Midwest are older than all commercial buildings in that region, and those in the Northeast are quite a bit newer.

Median Age by Region

Table 2:  Number, size, and age of office buildings by Census region and division

The size of office buildings has varied throughout the decades, with no apparent major trend.  The largest office buildings were constructed in the 1980's.

Table 3:  Number, percent, and size of office buildings by year constructed category



Continue:  Who owns and occupies them?

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Specific questions may be directed to:

Joelle Davis Michaels
joelle.michaels@eia.doe.gov
CBECS Manager
Phone:  (202) 586-8952
FAX:  (202) 586-0018

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URL: http://www.eia.doe.gov/emeu/consumptionbriefs/cbecs/pbawebsite/office/office_howold.htm

Release date:  September 11, 2000 
File last modified:  January 3, 2001