Leasing Definitions - What Does "Usable Square Feet" Mean?

What exactly is "usable square footage" in leasing terms?

Young woman in empty office space with moving boxes
Kai Chiang

Definition: In commercial leasing, Usable Square Feet simply means the square footage that is rented to be used exclusively by the tenant. Usable square feet includes private (tenant-only) rest rooms, closets, storage and any other areas used only by the tenant.

Simply put, usable square footage means the square feet used directly by the tenant. It does not include common area square footage which is used in calculating "rentable square feet."

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Also Known As: USF, Usable SF, Usable Square Footage

Common Misspellings: Useable Square Feet, Useable Square Footage