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## Floor Space Index or FSI

The Tamilnadu Government has Notified the new Development and Building Rules, in 2019. It is applicable for the whole of Tamilnadu. Its known as Tamilnadu Combined Development and Building Rules, 2019.

These Rules categorise buildings as High Rise and Non High Rise buildings. Buildings with height upto 18.30 Meters are Non High Rise Buildings. For these Non High Rise Buildings, the maximum Floor Space Index allowed is 2.

## Calculation of Constructable Area

FSI allowed is 2. This means, the total plinth area one can construct is twice the area of the plot. For example, if the plot area is 2400 sqft, the total plinth area of all floors that can be constructed in that plot can be upto 4800 sqft. There are exemptions for some constructions while computing the Floor Area. Later in this Article we give the list of exemptions.

The calculation of FSI is not that simple. The road width, plot width and height of the buildings also decide the constructable area. This is so because of the need to provide Set Back Spaces around the building.

For details about Set Back Spaces, click HERE. As a result, achieving the allowed FSI may not be possible many times.

## Definition of FSI

## Exemptions from FSI Norms

## Achievable FSI Affects Value of the Property

## Benefits of Increased FSI

Apart from allowing new constructions to build more floor area,as a result of this higher FSI,(earlier the FSI was 1.5 only), redevelopment activities are on the increase. Buildings/apartments constructed years ago, with old FSI norms are being redevloped now. This is a win win situation both for the occupants/owners as well as for the promoters.

M.ParamanandanI hv a building in 2400 sft plot. I want to leave 15 ft width in ground follow for cark parking.15 x 40 ft. It is a Stilt plus 2 floor building. What could the width of the 2nd floor construction. Present FSI is 1.4 only. Pl.reply.

deepu24 feet road

40 feet frontage

93 feet depth

total area is 3790 sq.ft.

what is the FSI limit allowed?

Balaji20 feet road width,infront of plot how many floors building can possible to construct.

30 feet road width, infront of plot how many floor building can possible to construct.

40 feet road width, and 60 feet road also.

approximately plot area 60 ft x 40 ft = 2400 sqft.

PN BadriI am living in 36, Akbarabad First St and the builder wilfully built a unauthorised 2BHK Flat in the stilt floor and 18′ X 18′ studio flat in the open terrace illegally. Due to illegal construction now the builder lost the concession of stilt floor and the building becomes 4floor apartment.

Tanveersir i am having 1800 sqft with B35 X L 56 Road 23 ft .what is current FSI limit for apartment contruction in Polichallur chennai 600074 india

Karunagaran MSir, I am having a breadth of 22 feet and 100ft in length. Could you suggest the best possible area to utilize the ground floor, first floor and second with setbacks. As my plot breadth is very small how can I arrive the setback area. Please explain.

A Sampath KumarSir…The new building rules doesn’t say anything about exclusion of balcony for FSI calculation

S.BalachandranDear Thiru Sampathkumar,

balcony is not covered area. It is an open area. Covered area means contents inside are not visible to see from outside. The contents in balcony are visible to any opposite flat residents. Hence balconies are not covered areas and hence they are not to be included in the FSI calculation.

PG .Chandrasekaran13.75 feet road,5000sqf land,how much build sqf

G. SankaranG.Sankaran i am having 2500 SQ.Ft with breath of 35 feet and length in 70 feet road. what current fsi limit for residendial building construction

smt vasantha sundarammy aunty having land of 3600 sqft at ramakrishna st, next to sai baba mandir, perambur, the road width is 33 feet, what is the fsi now at present if she goes for construction, upto how many floors, please reply

pakidad.tumblr.comAjit Kumar Chordia, president, CREDAI Chennai, says FSI rules need reform and ongoing discussions with government officials are aiming at higher FSI in premium areas.