Usable floor area (Dutch gebruiksoppervlakte, GBO/GO) is the usable floor space of a home or building, measured according to the NEN 2580 standard. It is the area you can actually use.
Features
The usable floor area is measured internally, that is between the enclosing walls. During measurement certain parts are deducted:
- Structural elements: load-bearing walls and columns are not counted.
- Stairwells and voids: openings larger than 4 m² are deducted.
- Low spaces: areas with a net height below 1.5 m are not counted (important with sloping roofs).
As a result, the usable floor area gives a realistic picture of the usable space, unlike the gross floor area (BVO), which is measured including walls and structure.
Application
Usable floor area is used in many situations:
- Home sales: agents state the usable floor area in accordance with the NEN 2580 measurement instruction.
- Property valuation: authorities use the area when determining value.
- Rent points: housing valuation systems base points partly on the area.
- Energy labels: usable floor area is an input in the energy performance calculation.
Distinguishing it from gross floor area (BVO) and net floor area (NVO) is important for comparing areas correctly.
Related terms
- NEN 2580
- Gross floor area
- Net floor area
- Occupancy area
- Living area
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