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This help desk is a free resource intended for discussion purposes only. Neither BOMA, its chapters, affiliates, or Extreme Measures Inc.® are responsible for the information, comments or opinions expressed herein. For complete information, refer to the official publications of the standards themselves.

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Minimum Ceiling Height

mike schott
January 12, 2010

re: full floor tenant approx. 17,000 sf, business use
Q: what is the minimum ceiling height required for a space to be included in the BOMA calculation? there is an area of approx. 700 sf that transitions from +7'-6" to +3'-0" (below a ramp on the floor above)

Adam Fingret
Extreme Measures Inc.
January 12, 2010

This condition is discussed on Page 43 of The Standard under 'Restricted Headroom Area'...

"Restricted Headroom Area - a portion of an occupant area that does not meet the requirement of the International Building Code section 1208.2 Minimum Ceiling Heights, including subsections thereof."

Restricted Headroom Area must be disclosed, but is NOT excluded from interior gross area, rentable area or occupant area.

You should refer to the International Building Code as there are several conditions that govern Minimum Ceiling Height. Generally however, heights below 7'-6" (2286mm) are considered below the Minimum Ceiling Height and in turn, are considered Restricted Headroom by BOMA 2010.

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