This partial list of Building Measurement Industry terms relates to this single standard: STEVENSON SYSTEMS, INC. 1998
The actual surface areas of floors square footage of (office, corridors, bathrooms, and the like) that require cleaning in order to maintain sanitary conditions and good appearance. May or may not have any other relationship to other square footage measurements of floor area used in leasing.
The total enclosed area of a floor or building measured to the inside surface of the permanent exterior walls of the building or structure or to a predetermined surface, or plane as in the case of overhangs and projections to the outside surface of the building. Gross Area may include areas above, below, or outside boundaries of the building in the case of central plants, parking structures and other structures separated from the main building that are used by the main building. This area may include areas as penthouse mechanical rooms, basement services, exterior corridors, tunnels, balconies, overhangs, central plants, mechanical within the parking structure, or other buildings separated from the main building but used by the main building.
The actual Usable area a tenant occupies on a floor within the boundaries of their enclosing walls. The Suite Usable Area does not include any corridor extensions or areas outside the suite (Exception: Corridor setbacks for door swings are usually included in Suite Usable). Suite Usable Area is normally measured to the centerline of demising walls between tenants, the inside surface of the perimeter walls, and the tenant side of the core walls.