Gross floor area
The gross floor area of a building comprises the floor areas of the different storeys and the area of attic or basement storeys in which there are dwelling or working rooms or other space conforming to the principal intended use of the building.
The gross floor area is the horizontal area enclosed by the outer surfaces of the walls of the storeys or their imagined continuation for openings and decorations on the surface of the outer walls.
Statistics using the definition
Validity of the definition
- Valid until (31 December 2078)