Floor Space Area Ratio

In other words it is a ratio between a building s total constructed floor area and the land area.

Floor space area ratio. For an fsr of 0 5 1 if site area 1000m 2 floor area allowed 500m 2. Thus an far of 1 5 is translated as an fsi of 150. Far is the abbreviation for floor area ratio. Fsi and far both represent the calculation based on the ratio derived by dividing the gross floor area with the total size of land on which the building is made.

Floor area ratio and floor space index are two ways to express the same value. Maximum fsr is the floor area you may build compared to the total area of the block. Far and lot coverage. This numeric value indicates the total amount of area on all floors you can build upon a plot.

Far is defined as the ratio of a building s total floor area gross floor area to the area of land upon which it is built the constructed area would include the basic structure exterior walls staircases or lobby space if any. Far is expressed as a decimal number and is derived by dividing the total area of the building by the total. Floor space index fsi is also known as floor area ratio far or floor space ratio fsr. The difference between far and fsi is that the first is a ratio while the latter is an index.

It is the ratio of the total floor area of buildings on a certain location to the size of the land of that location or the limit imposed on such a ratio. Floor space ratio can be a difficult concept to visualize. Fsi stands for floor space index whereas far stands for floor area ratio. Floor area ratio far is the measurement of a building s floor area in relation to the size of the lot parcel that the building is located on.

The following simple examples show how an fsr of 0 5 1 can be achieved on a single lot. Fsi and far are both related to the field of real estate. Far is a ratio expressed as a decimal. The floor area ratio is variable because population dynamics growth patterns and construction activities vary and because the nature of the land or space where a building is placed varies.

For example a far of 1 4 is equal to a floor space index of 140. Index numbers are values expressed as a percentage of a single base figure. Building space fars can estimate the potential impact of a proposed development. Floor space ratio varies for different types of buildings.

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.