The structural and core-services condition of a building before tenant fit-out.
Construction · Global
The structural and core-services condition of a building before tenant fit-out">fit-out.
Includes the structure, exterior, MEP risers, lobby, common areas, and core services (elevators, restrooms). Tenant fit-out begins where base building ends.
Base building is part of the construction vocabulary that institutional Class A occupiers, landlords, and advisers use across Global markets. Understanding it correctly affects how you read lease documents, model occupancy economics, and benchmark deal terms across cities. Class A Atlas tracks regional variation alongside the global standard so cross-border occupiers can translate quickly.