FSI is the abbreviation for Floor Space Index. This term is most commonly used in India. It is equivalent to Floor Area Ratio (FAR) and floor space ratio (FSR) which are used in other countries.

Floor Space Index (FSI) basically indicates the maximum permissible floor area that can be built on a plot. Numerically, FSI is the ratio of building floor covered area to the raw area available on that plot/land.

FSI calculation

The permissible value of Floor Space Index (FSI) varies from place to place. It also depends on the type of building. The FSI ratio value of a specific area is easily found in all the building bylaws for various cities and municipalities. Different city or municipalities may have different bylaws and consequently different FSI values.

Permissible FSI/FAR value depends on-

  • Size of the plot.
  • Type of building (residential, business, mercantile institution, worship etc.).  
  • The width of the adjacent road. 
  • Availability of power, water, and sewer lines.

For a city or country, FSI/FAR value may be revised from time to time depending on the growth of each City, increase in the land Value, development of power, water and sewer facilities.

 

Disclaimer

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