FSI or FAR

Q: What is FSI or FAR? How is it calculated?

Sunil Joshi, Mumbai

11th August 2015

Buying property in Kolkata

fsi

floor space index

floor area ratio

far

non-far area

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Replies (2)

Right Nikita.....
What is Non-FAR area? Which all area comes under it? Are these area exempted under FAR computation?

Vinay Dixit, Mumbai

11th August 2015

Comment

Welcome Vinay...
The area uses in a project that is exempt from the FAR computation of a construction is known as the Non-FAR area. Some of these include stair-case, lift rooms and passage besides the topmost portion, architectural features, elevated tanks, basement floor, and fire escape staircase, amongst others.

Nikita Kapur, Bangalore

11th August 2015

Yes, provision for area for such usages are exempt from FAR computation up to a minimum percentage of the total floor area (The percentage is close to 10% as per most of the development norms).

Huda Ali, Delhi-NCR

11th August 2015

Hi Sunil,
The terms FAR (Floor Area Ratio) and FSI (Floor Space Index) are often used interchangeably and represent the limitation on gross floor area that can be built on a plot. FAR is expressed in terms of percentage while FSI is expressed as a ratio.

Huda Ali, Delhi-NCR

11th August 2015

Comment

Thanks Ali,
But i didn't get you properly. Can you explain it little bit more?

Sunil Joshi, Mumbai

11th August 2015

Hi Sunil,
Technically it is the quotient of the ratio of the combined gross covered area (plinth area) on all floors, excepting areas specifically exempted under these regulations, to the total area of the plot.

FSI / FAR = (Total covered area on all floors) / Plot area

For instance, when a development authority states that it allows the floor area on a plot to be a maximum of 3 times the area of the plot, it would state that allowed FAR = 300 or alternatively FSI = 3

Nikita Kapur, Bangalore

11th August 2015