What is FSI / FAR? | Real Estate Glossary | knocKnock
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What is FSI / FAR?

FSI (Floor Space Index) or FAR (Floor Area Ratio) is the ratio of total built-up area of a building to the total plot area, determining how much construction is permitted on a given land parcel.

FSI (Floor Space Index) and FAR (Floor Area Ratio) are the same concept with different names used across Indian states. They define the maximum construction allowed on a plot of land.

FSI/FAR = Total Built-Up Area of All Floors / Total Plot Area

Example: On a 10,000 sq.ft. plot with FSI of 2.0, the developer can build up to 20,000 sq.ft. of total built-up area across all floors. This could be 4 floors of 5,000 sq.ft. each, or 10 floors of 2,000 sq.ft. each.

FSI in Hyderabad/Telangana: - Varies by zone and road width - Higher FSI is permitted along wider roads and in commercial zones - IT corridor areas may have higher FSI allowances - Premium FSI can sometimes be purchased from the government

Why FSI matters to buyers: 1. Density: Higher FSI means more units per acre, potentially more crowded 2. Open space: After maximum FSI is used, remaining land becomes open/green space 3. Future development: If FSI is not fully utilized, future expansion is possible 4. Property value: Areas with higher permitted FSI tend to have higher land values

Unit density and FSI: A project with lower FSI utilization will have more open space and fewer units per acre, which is generally preferred for residential living. Premium projects in Hyderabad often boast about low density (fewer units per acre) as a selling point.

Frequently Asked Questions

What is a good FSI for residential projects?
For residential comfort, lower FSI utilization (1.5-2.5) is preferred as it means less built-up area relative to plot size, resulting in more open spaces and lower density. Ultra-luxury projects may use FSI as low as 1.0-1.5.
Can a developer exceed the permitted FSI?
No. Exceeding permitted FSI is illegal and can result in demolition orders. However, some states allow purchase of additional/premium FSI for certain project types.
Does FSI include parking area?
In most states including Telangana, covered parking areas are partially or fully excluded from FSI calculation, encouraging developers to provide adequate parking.

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