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Urban Redevelopment Authority (URA)

Floors

Find out the GFA treatment for floors

Last updated on 6 June 2026

Floor under a Pitch Roof

If the height of the roof measured from the springing line to the ridge is equal to or greater than 1.5m, the floor under the roof is included as GFA.

Section showing load-bearing floor under pitched roof counted as GFA if height ≥1.5m

Floor under a Pitch Roof

Floor under a Raised Platform

If the height of the raised platform measured from the floor to the underside of the raised platform is greater than 1.5m, the area under such raised platform is included as GFA.

Section showing floor under raised platform, only area above 1.5m counted as GFA.

Floor under a Raised Platform (Section)

Intermediate Floors

Intermediate load-bearing floors are included as GFA.

Section showing intermediate load-bearing floors included as GFA above rooms.

Intermediate Load-bearing Floors

Perforated Floors

Covered perforated floors (including areas covered by such perforated floors) are included as GFA regardless of the type of material used for the floor.

Plan showing covered perforated floors counted as GFA near maintenance room and store.

Covered Perforated Floors