Rentable Area

Rentable area includes the usable area within the office plus shared areas of the floor and building such as:



Toilet Rooms

Electrical Closets

Mechanical Spaces

Shafts (vertical penetrations through floors) for mechanical systems, elevators and stairs are excluded from rentable area calculations.

These spaces may equal between 10 and 20 percent of the area within the leased office space.

BOMA (Building Owners and Managers Association) has established standards for calculating usable and rentable areas. The calculations should be standard from building to building.


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