Net Internal Floor Area

The net internal area nia of a building is the usable area measured to the internal finish of the perimeter or party walls ignoring skirting boards at each floor level.

Net internal floor area. Areas are the foundation of a development appraisal and using the wrong area can cause significant changes in the profitability of a scheme. 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 internal floor area is approximately 500 00 square meters distributed as follows. It s used when assessing building costs and when calculating areas for building regulation purposes.

So it includes the area of the internal walls. The floor area within the inside perimeter of the exterior walls of the building under consideration exclusive of vent shafts and courts without deduction for corridors stairways closets the. It is very important when describing the area of a building to be clear about which measure is being used for example in planning applications building regulation applications property sales lease negotiations rating valuations and so on. The net floor area nfa of the private units in a residential condo building is typically 60 of the gross floor area gfa.

Assemble yardhouse stratford london yardhouse is arranged as a simple 2 storey 3 aisled structure occupying a square footprint of 12m x 12m with a total internal floor area of 250 sqm. Offices and shops are. 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. Net internal area nia.

Gross internal area gia or gross internal floor area. Net internal area nia is the useable area within a building measured to the internal face of the perimeter walls at each floor level. Net internal area nia is the area taken to the inside face of the external walls of a building but excluding the area of internal walls and other non usable spaces. Net internal area covers all of those areas that can be used for a particular purpose.