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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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Is basement area included in BOMA measurements of Office space

Greg Barlow
Royla LePage
March 21, 2024

Is basement area included in BOMA measurements of Office space on a one storey office building?

David Fingret
Extreme Measures Inc.
March 21, 2024

Hi Greg,

Basement Areas are included in the BOMA Office Standard. There isn't usually a lot of Rentable Area in basements, but mechanical rooms and other Service Areas along with elevator lobbies, etc would be included as Rentable Area. As well, Occupant Storage is now included in the Rentable Area under BOMA Office 2024; however, no gross-up / Load Factor is applied to Occupant Storage.


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