Space / Space Inventory

Usable Area (Concept)

drawing showing the usable area highlighted

Tenants require information on a floor's when evaluating space offered by a building owner, and when allocating space for personnel and furniture. The amount of usable area can vary over the life of a building, as corridors expand and contract.

In the above floor plan, the building owner decided that would not be designated as service area, and so secondary circulation is included in the usable area.

How it is Calculated

A floor’s usable area is calculated by subtracting the from the .

Usable area also equals the minus the and service areas.