Floor To Lot Area Ratio Formula

Floor area and lot area are two terms commonly used in zoning analysis.

Floor to lot area ratio formula. Floor area ratio or far is a critical decisive element for the legal construction of any residential or non residential building. In this article wealthhow tells you how to calculate floor area ratio and equips you with a calculator for the same purpose. Far is expressed as a decimal number and is derived by dividing the total area of the building by the total. For example if a building with 20 000 square feet of floor area has an osr of 20 4 000 square feet of open space would be required on the zoning lot 0 20.

As a formula far gross floor area area of the plot. Floor area ratio far is a mathematical formula that determines how many square feet can be developed on a property in proportion to the lot area. For example a two story building of 3 000 square feet on a 4 000 square foot lot has a ratio of 0 75. The same lot with a single story building of 3 000 square feet would have the same ratio of 0 75.

The property area is multiplied by the far factor. 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. The terms can also refer to limits imposed on such a ratio through zoning. While often used in combination to determine other areas or ratios such as floor area ratio far for example the two have distinct differences and are defined differently by code.

Far g b far 20 000 ft 2 20 000 ft 1 0 figure 1. What is floor area ratio calculation formula. It is a tool used by the planning body of any city or town to identify densely constructed areas from the others. 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.

Let s learn the concept of building coverage ratio or floor area ratio to understand how. If circular measure the diameter d and use the formula 1 2 x 3 14 x d 2. Calculate the floor area ratio. What does far signify.

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. It is often used as one of the regulations in city planning along with the building to land ratio. With the result being the maximum floor area allowed for a building on the lot. If your lot is irregular divide it into a combination of these basic shapes calculate the area of each shape and.