Net Floor Area And Gross Floor Area

Sample 1 sample 2 based on 2 documents.

Net floor area and gross floor area. The net floor area nfa of the private units in a residential condo building is typically 60 of the gross floor area gfa. Furthermore the net floor area also includes the areas of exposed installations or permanently installed objects e g. Floor area usable the fraction of the net floor area for the intended use of the building i e. The gross floor.

Saleable floor area include full thickness of external walls half thickness of walls shared with other units internal walls thickness as well as balconies but exclude bay windows. Net internal area nia or usable floor area ufa the nia is the gia less the floor areas taken up by lobbies enclosed machinery rooms on the roof stairs and escalators mechanical and electrical services lifts columns toilet areas other than in domestic property ducts and risers. Sum of all areas between the vertical building components walls partitions i e. Floor areas in property development can often cause a fair bit of confusion when do you use gross internal area when does the net apply and what about gross external area.

The net floor area nfa includes the area of usable areas of all floor plan levels located between rising components of the building. How do you calculate the building gross floor area to net floor area ratio. Net floor area means the gross floor area defined by the outside dimensions for each floor minus the horizontal floor area on each floor used for corridors elevators stairways mechanical rooms and workrooms. The floor area of a building or portion thereof not provided with surrounding exterior walls shall be the usable area under the horizontal projection of the roof or floor above.

Net floor area is the internal room space between face of walls. Net internal area nia net internal area is the usable area available to occupants of the building. Net floor area reduced by circulation areas corridors stairs etc and functional areas wcs storage rooms etc. Gross internal area gia the floor area contained within the building measured to the internal face of the external walls.

Machinery rooms on the roof. It is divided into the usable area ua functional area fa and circulation area ca. It s calculated by taking the gross internal area and subtracting floor areas being used by. In other countries gross floor area meaning is like hong kong s saleable area.

Areas are the foundation of a development appraisal and using the wrong area can cause significant changes in the profitability of a scheme. Gross sqft net. Gross floor area reduced by the area for structural components. For accurate benchmarking purposes nfa must be calculated using a consistent methodology.