Residential Floor Area Ratio
Gross floor area is the sum of the floor area of each story.
Residential floor area ratio. The floor area ratios are set forth by nyc planning in the zoning resolution zoning code. The floor area ratio far or floor space ratio fsr denotes the maximum floor space that can be constructed on a given piece of land. The area of the land required to be set aside for drainage reserve 1 dr and or road reserve 2 rr to be vested in the state may be included in the site area to compute the gross floor area gfa for a gpr. Residential floor area ratio far floor area ratio or far regulates the amount of gross floor area that can be built on a lot.
It is a tool used by the planning body of any city or town to identify densely constructed areas from the others. Understanding floor area ratio and its calculation. 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. Outside of designated hillside areas all r1 zoned lots now have a maximum residential floor area ratio rfar of 0 45 as opposed to the previous 0 50 for lots of less than 7 500 square feet.
It is the ratio of gross floor area of building s on a lot divided by lot size. Floor area ratio or far is a critical decisive element for the legal construction of any residential or non residential building. Floor area ratio far is the ratio of a building s total floor area gross floor area to the size of the piece of land upon which it is built. Within designated hillside areas a new rfar of 0 45 is established for the lowest slope band 0 15 reduced from the previous 0 50.
The terms can also refer to limits imposed on such a ratio through zoning. Gross floor area g floor area of 1st story floor area of 2nd story for all floors above the ground step 4. It is often used as one of the regulations in city planning along with the building to land ratio. An area safeguarded for purposes of building or widening a public drain.
Calculate the floor area ratio. The floor area ratio is the relationship between the total amount of usable floor area that a building has or has been permitted to have and the total area of the lot on which the building. It is also known as fsi floor space index in some markets.