FSI and FAR have the same meaning despite using different symbols. For instance, a FAR describes itself in decimals, whereas an FSI does it in percentages. Within a single metropolis, the FSI might vary from city to city and even from locality to locality. FSI can vary based on how many stories a building has, even within the same space. The city zone, building type, and other facilities all affect how FSI is regulated.
Contractors are required to submit the specifics of the proposed building for zone approval prior to beginning any works. These specifics include the building's height and structure, whether it will be utilised for residential or commercial purposes, the size of the lot on which it will be built, and other factors.
Location is the main aspect that has an immediate impact on the FSI. The FSI is often higher in urban regions because to the constrained space. Low FSI is caused by the sheer amount of land available for construction in rural locations.
Some local governments employ FSI calculations that are larger than the plot. Any plot near the road will have a higher FSI because of the width of the road. The FSI can be determined using a formula using the plot area and overall built-up area as inputs.
You need to know the entire floor area of each floor as well as the total area of the land plot in order to calculate the Floor Area Ratio (FAR) or Floor Space Index (FSI). The following can then be used to determine it:
FAR = Floor Area of all floors of the Building/ Area of the plot
FSI = Total floor area of the building's floors by/area of the plot * 100.
The entire graphic is helpful if the FAR is smaller than 1. Some real estate is undeveloped and unoccupied if the value is less than 1. But if the FAR number is more than 1, there will be more than one narrative in the same plot.
If the size of the plot or land being used for a project is 500 sq ft and the FAR determined for that particular city/locality is 1.5, then, the total floor area that can be constructed will be 750 sq ft (500×1.5) according to far calculation. In addition, road width is one of several factors considered by the municipal government when determining the FSI of a specific locality.
Land value in a certain area is influenced by the FSI value. This number affects both the amount of available land and whether or not the building can have more than one story. Instead of being the same everywhere, the FSI value varies by geography and building type dependent on the number of floors.
The FSI ensures organised construction across all sectors, including train stations, offices, residential structures, etc., to conform to deadlines, making city planning and development uniform when it is in place. It might help to clearly distinguish between open areas and work zones. Additionally, no unauthorised construction is allowed.
Higher FSI for builders enables them to develop more and sell more, affecting affordability. It will be useful in areas where it is urgent to provide shelter for everyone. Less space will be used for construction on that plot of land if the FSI is reduced. If the structure is built following the FSI, the builder is not concerned about NOCs.
Premium FSI is available here when the FSI where you are is modest yet you wish to increase the maximum. If you want to increase the limit from the allowed FSI, you must pay the local authority more money.
The Premium FSI Fund is the name given to this fee. To qualify for the premium FSI, a property must have a nearby road that is at least 30 feet wide.
You qualify for a 20% premium FSI if the property is next to a road that is 30 to 40 feet wide. 20% more structures than the FSI permits may be built. Additionally, you qualify for a 30% premium FSI if the plot is close to a road that is 40–60 feet wide. For sites next to roadways that are closer to 60 feet in length, the Premium FSI is 40%.
Road's width next to the plot's location
30-40 ft., 20%
40-60 ft., 30%
over 60 feet 60%
A structure cannot be larger than 4000 square feet on a parcel of land with an FSI/FAR of 2. If this plot is next to a road that is 50 feet wide, you are eligible to obtain 30% Premium FSI. You can therefore build 1200 square feet extra than the 4000 currently permitted. You are now able to increase the maximum building size on the site to 5200 square feet.
Let's say your property is 1000 square feet, the road is 70 feet long, and the FSI/FAR is 1.5. With the FSI/FAR of 1.5, 1500 square feet might have been built on the 1000 square foot plot. Now that the land is close to a 70-foot-wide road, you can benefit from a 40% premium FSI. It demonstrates that you can add 600 square feet to your building. In this instance, you are able to build up to 2100 square feet on a 1000 square foot site. For Various Indian Cities, FSI/FAR
Bangalore's neighbourhoods can be divided into three categories: highly developed, moderately developed, and sparsely developed places. Depending on this category, the size of the land, and the width of the road, the FSI/FAR can range from 1.75 to 3.35.
Bengaluru, Karnataka
India
Bangalore