Net Floor Area Ratio

It is a tool used by the planning body of any city or town to identify densely constructed areas from the others.

Net floor area ratio. Calculate the floor area ratio. In this article wealthhow tells you how to calculate floor area ratio and equips you with a calculator for the same purpose. The floor area ratio of a 1 000 square foot building with one story situated on a 4 000 square foot lot would be 0 25x. Space efficiency is defined as the ratio of nfa to gfa.

Divide the gross floor area by the buildable land area. The floor area within the inside perimeter of the exterior walls of the building under consideration exclusive of vent shafts. Far describes the intensity of the use on a site. Definitions of gfa including which areas are to be counted towards it and which areas aren t vary around the world.

The net floor area nfa of the private units in a residential condo building is typically 60 of the gross floor area gfa. A two story building on the same lot where each floor was 500 square feet. Economics and social factors area with high development are more densely populated as compared to areas of low economic growth. Index numbers are values expressed as a percentage of a single base figure.

Commercial office floor area calculation methods. Floor area ratio far g b. Adding to this confusion is the practice among some developers to use gross leasable area gla and gfa interchangeably or to use. Download original report pdf grant of power for the purpose of promoting health safety morals or the general welfare of the community the legislative body of every municipality is hereby empowered to regulate and restrict the height number of stories and size of buildings and other structures the percentage of lot that may be occupied the size of yards courts and.

Gross floor area gfa in real estate is the total floor area inside the building envelope including the external walls and excluding the roof. Gross floor area is the sum of the floor area of each story. The floor area ratio far is the ratio of a building s gross floor area to the total area of the land upon which it is constructed. Thus an far of 1 5 is translated as an fsi of 150.

Gross floor area g floor area of 1st story floor area of 2nd story for all floors above the ground step 4. Floor area ratio is sometimes called floor space ratio fsr floor space index fsi site ratio or plot ratio. The result is the floor area ratio far. Factors affecting population density.

Examples listed below are some examples of net floor area to help illustrate the relationship to gross floor area. The difference between far and fsi is that the first is a ratio while the latter is an index.