Property Valuation

A Florida appraiser uses the 'gross building area' (GBA) in the cost approach for a commercial building. GBA differs from 'net rentable area' (NRA) in that GBA:

AIncludes only tenant-occupied spaces
BExcludes common areas and mechanical spaces
CMeasures the total area of all floors from exterior wall to exterior wall✓ Correct
DIs calculated from the interior surfaces of the walls

Explanation

Gross Building Area (GBA) is the total area measured from the exterior faces of the building walls, including all floors, regardless of use (tenant space, common areas, mechanical rooms, stairwells). Net Rentable Area (NRA) includes only the spaces that can be rented and typically excludes common areas, stairwells, and mechanical spaces. The difference between GBA and NRA represents building efficiency.

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