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Gross Floor Area (GFA) Analysis

The Gross Floor Area (GFA) is the total property square footage of a building, measured between the outside surface of the exterior walls. This metric is the denominator of the Energy Use Intensity (EUI) equation (kBtu/SF) and even small measurement errors can determine whether a building is compliant or facing penalties. 

What is included in Gross Floor Area?

Gross Floor Area is the total floor area measured between the exterior walls. Square footage used for property tax assessment or rentable space could be different and using this square footage could be decreasing your chances of meeting the building performance standards and avoiding future penalties.

Included in GFA

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  • Lobbies

  • All floors of a multi-story building

  • Fully Enclosed Balconies

  • Tenant Areas

  • Common Areas

  • Corridors

  • Clubhouses

  • Meeting Rooms

  • Break Rooms

  • Atriums

  • Restrooms

  • Elevator Shafts, and other vertial penetrations

  • Stairwells

  • Basements

  • Storage Rooms

  • Laundry Rooms

  • Garage Elevator Rooms

  • Mechanical Rooms

Not Included in GFA

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  • Parking

  • Exterior Spaces

  • Balconies

  • Decks

  • Patios

  • Pavilions

  • Outdoor Pool Decks

  • Exterior Loading Docks

  • Driveways

  • Outdoor Covered Walkways

  • Outdoor Courts

  • Crawl Spaces

  • Attics

  • Garage Elevator Vestibules

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