There are only limited regulations governing the quoted area of leased premises in Hong Kong and tenants should take care in confirming the net areas. The following plan and notes provide commonly used area basis:
Gross Floor Area
Gross Floor Area shall include all areas contained within the external walls at each floor level and the whole thickness of the external walls.
In general, mechanical and electrical services rooms, refuse chambers and rooms, water tanks, carparking floors and all lifts and staircases passing through these floors shall be excluded from the Gross Floor Area calculation.
Lettable Area of whole floor shall include toilets and lift lobbies but exclude common areas such as lift shafts, stairs, plant rooms and smoke lobbies.
The net useable area and columns up to the external window face.
Net Useable/Carpetable Area
The net useable or carpetable area within the premises.
Square feet / Square Meter
The square feet (abbreviated ft2 or sq ft) is an imperial unit and U.S. customary unit (non-SI, non-metric) of area, used mainly in the United States, Canada, United Kingdom, Hong Kong. 1 sq.ft. = 0.09290304 sq.m.。
The basis for measurement can vary greatly and we recommend that the net areas should be confirmed by tenants' contractors.