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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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SINGLE TENANT BUILDING - Gross vs Rentable

al koo
AK LLC
August 10, 2011

According to BOMA, how do you calculate the rentable SF for a single tenant, multi floor building?

Is the gross construction square foot the same as rentable SF under the BOMA definition for a single tenant building. If not, what is the appropriate way to measure the SF for a single tenant building. Can you deduct the vertical penetrations such as staircases and elevator and mechanical shafts on the upper floors?

David Fingret
Extreme Measures Inc.
August 10, 2011

It is permissible to use the Gross Building Area for leasing purposes under BOMA 96 when the entire building is leased to a single tenant as long as all parties agree. There will be no deductions for vertical penetrations.

al koo
AK LLC
August 10, 2011

Thank you for your response. Now for the Gross Building Area, does this calculation include Balconies and Terraces? What constitutes the outside wall as the Gross/Rentable Area for a single tenant building? How are outside areas accounted for?

Thanks.

al koo
AK LLC
August 10, 2011

Also, please discuss the extent that arcades can be calculated if they are not fully enclosed but do protect from the elements.

thank you.

David Fingret
Extreme Measures Inc.
August 11, 2011

All areas must be fully enclosed, so balconies, terraces and arcades that are not fully enclosed cannot be included. For more information, I recommend purchasing the BOMA 1996 Standard Method For Measuring Floor Area In Office Buildings at <a href="http://www.boma.org" target="_blank">www.boma.org</a>.

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