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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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Measuring mechanical rooms and penthouse space

Randy Ferguson
Ferguson Property Services Inc
September 24, 2012

"Wondering if there is an interpretation as to what constitutes mechanical rooms for the purpose of BOMA? We are constructing a large enclosed and covered mechanical room on the roof of an office building, part of which would be 50% perferated to allow for ventilation. Is this considered indoor space?"

David Fingret
Extreme Measures Inc.
September 25, 2012

Hi Randy,

In order for the mechanical area to be included in the rentable area, it must be "fully enclosed". If the area is perforated, then it is not fully enclosed and therefore should not be calculated as part of the rentable area under BOMA 1996.

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