Fast answerA common market term for the area available within a tenant premises for its use, distinct from the billed rentable area. Exact terminology depends on the measurement standard.
Why it matters
Space planning may use one area while the lease charges rent on another.
What to request
Ask the measurement professional to identify the official term and reconcile it to rentable area and the floor plan.
Planning example
Use the actual room program and test fit to evaluate practical efficiency. The example organizes arithmetic or evidence only; the transaction documents and facts determine the result.
Related decisions
Connect this term to the area, cost, building, flexibility and document provisions elsewhere in the office decision file.
Evidence boundary: office availability and quoted economics change. Confirm current premises, authority, area, costs, permitted use and documents for the specific transaction. Read the methodology.