Fast answerA relationship between rentable and occupant or usable area under a stated measurement method. Terminology and calculation depend on the applicable standard.
Why it matters
A larger difference can raise billed area without creating more exclusive workspace.
What to request
Ask for the full standard, edition, method and calculation; do not accept a percentage without its source areas.
Planning example
A simple rentable-to-usable ratio is only arithmetic unless it is produced under the cited standard. 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.