What is FSI? | FSI Formula | FSI Calculation | FSI uses | Premium FSI - LCETED -lceted LCETED INSTITUTE FOR CIVIL ENGINEERS

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Feb 20, 2022

What is FSI? | FSI Formula | FSI Calculation | FSI uses | Premium FSI - LCETED

What is FSI?

FSI Abbreviation - floor a space index

Also referred to as FAR (ground area ratio).

In simple terms, FSI is the maximum allowable floor area that a builder can build on a specific land | plot.

FSI is the ratio of the floor area of ​​the building to the available land area. The FSI varies from municipality or city. It may have different bylaws and consequently different values.

Depending on the FSI / FAR value allowed

·       Size of Site.

·       Property Adjacent To Roads.

·       Type of Building (Commercial Building, Residential Apartments, Etc.).

·       Electricity, Water and Sewerage Availability.

 

 

Floor Space Index Formula

 

How is the floor space index calculated?

 

Floor Space Index = (Total Covered Area of All Floors / Plot Area)

Floor Space Index


 

How to Calculate FSI?

 

How to Calculate FSI

 

 

Assume you have a land of 1000 sq. ft and you want to construct a building on that land.

 

First of all, you have to identify your building types, it may be

1.  Residential (Scheme area)

2.  Residential (City area)

3.  Industrial (Scheme area)

4.  Commercial (Scheme area)

How to Calculate FSI

 

Let’s assume, we are going to construct a residential (city area) FSI is 4 for a building. (The FSI varies from municipalities or cities)

 

 

Floor Space Index = (Total Covered Area of All Floors / Plot Area)

 

Total Covered Area of All Floors = FSI x Plot Area

 

Therefore,

 

1000 x 4 = 4000  ft2 of floor covered area on your land.

 

It can be 4 floors per 1000 square feet or 8 floors per 500 square feet without affecting other municipal rules (minimum plot area, front, rear, side and setback, parking space).

 

What Is Premium FSI?

If the FSI limit in your city is low and you want to increase the FSI limit, there is an option, it is called Premium FSI.

Therefore, if you wish to increase the limit of allowable floor space index (FSI) for your project, you will have to pay additional fees to the local authority as premium FSI funding. But, you will be eligible for this option if you land, the length of the road must be at least 30 feet.

 

30 – 40 Feet Road Width

20 % Premium FSI

40 – 60 Feet Road Width

30 % Premium FSI

More than 60 Feet Road Width

40 % Premium FSI

 

.

For example, if your land has a roadside length of 30-40 feet, you can use the 20% premium FSI option, i.e. build 20% more than the permitted FSI.

 

Let Take another example,

 

If you have 1200 square feet of land near a 32-foot road (residential (urban area) FSI 4), you can get 20% of the premium FSI (Floor Space Index) by paying the premium. So,

 

Built-up area = 1200 x Normal FSI x Premium FSI %

Built-up area = 1200 x 4 x 20%

Built-up area = 960 Sqft

 

Uses of FSI In Building Construction

The FSI or FAR determine the value of land in an area. It helps to find the allowable dimension of lands such as size and width so that it can be used to know how much land can be used. The FSI value is not the same everywhere, it varies from municipalities or cities

If the government increases the FSI or FAR values, the chances of getting better utilization, housing stock, and space also increase. Ultimately, all of this contributes to the price of the property.

This is because, if the contractor builds more, the builder will sell more, thus charging them a reasonable fee from the home buyer.

 

It allows you to build the building according to the rules and regulations. If you first know the floor space schedule and prepared a House plan using it NOCs will not be questioned.

 

 

FAQs

What is Paid Floor Space Index?

if a builder or contractor wants to increase their FSI limit, they have to pay some funds to the municipal organization so they can get an additional plot area it’s called paid FSI

 

What Is Premium FSI?

If the FSI limit in your city is low and you want to increase the FSI limit, there is an option, it is called Premium FSI.

 

What Is 2.5 FSI?

If the FSI is 2.5, a builder with an area of 1,000 square meters can build 2.5x1,000 square meters or 2,500 square meters.

Floor Space Index

FSI MEANING



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