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FSI – Floor Area Ratio – Floor Space Index

In the Real-Estate Jargon series, this is the second blog. You might be interested in first blog of the series abut definition of different kinds of areas  (Definition Of Carpet Area , Built Up Area , Super Built Up Area)

Floor area ratio is very commonly known as floor space index (FSI). In laymen terms, it is an indicator that shows how many floors can be built in certain areas. It is the ratio of the total floor area of buildings to the size of the land of that location.

Municipal corporation or urban development centra set the norms for FSI and builders. Constructors have to follow them strictly, so anyone can’t construct a building that is very tall and does not provide enough space for surrounding buildings.

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In a nutshell, FSI restricts that taller buildings should have better space at the ground so it does not impact surroundings.

As a formula: Floor Area Ratio = (Total covered area on all floors of all buildings on a certain plot)/(Area of the plot).

Let’s take an example, if FSI is 3 for any city, and plot area is 3000 sq. meter,In this case builder can construct

  • 5  floor of  1800 sq meter (60% of 3000)  covered area in each floor  = 5*1800 = 9,000 /3 = 3,000
  • 10 floor of 900 sq meter (30% of 3000) covered area in each floor = 10*900 = 9,000/3 = 3,000
  • 20 floor of 450 sq meter (15 % of 3000) covered area in each floor = 20*450 = 9,000/3 = 3,000

Normally FSI varies according to city and area, In vadodara it is between 2 -3 .

Industrial Flooring Reference:

http://www.carfree.com/far.html

http://en.wikipedia.org/wiki/Floor_Area_Ratio

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