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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 Gross Square Footage of HVAC and Plumbing

Dave Hartshorn
The Florida Aquarium
February 3, 2010

Most guidlines and industry data related to Facility Maintenance & Repair Costs (including those for HVAC, PLUMBING and ELECTRICAL components are based on GROSS SQUARE FOOT values.

Does BOMA publish any procedural manuals for calculating GSF for such systems?

If not can you recommend a source?

Adam Fingret
Extreme Measures Inc.
February 3, 2010


BOMA recently published a new document called Gross Areas of A Building: Methods Of Measurement (2009). It outlines two methodologies for measuring gross area in buildings of all types/uses. It is a robust and detailed document that should suit your requirement.

You can purchase the document on BOMA International's website at:


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