The measured area on which rent is calculated — includes a share of common areas.
Measurement · US
The measured area on which rent is calculated — includes a share of common areas.
RSF is the rentable area of a tenant's premises plus an allocated share of building common areas (lobbies, corridors, restrooms, mechanical rooms). The difference between RSF and usable square feet is the loss factor. Always calculate occupancy cost on RSF for direct comparability with quoted rents.
Rentable square feet (RSF) is part of the measurement vocabulary that institutional Class A occupiers, landlords, and advisers use across US markets. Understanding it correctly affects how you read lease documents, model occupancy economics, and benchmark deal terms across cities. Class A Atlas tracks the US definition alongside the global standard so cross-border occupiers can translate quickly.