FSI In Mumbai: How To Calculate Floor Space Index?

By Investoxpert | 16 Nov 2023 | Real Estate

The Floor Space Index (FSI) or Floor Area Ratio (FAR), a key idea in real estate, determines how tall a building should be in relation to the size of the property. In Mumbai, the ratio of usable area to total built-up area is used to define it. Let's examine FSI In Mumbai City for residential and commercial structures!

The floor space index (FSI) is the ratio of the total building area to the gross area of the property. This index is determined by the Bureau of Indian Standards' National Building Code of India (NBC). Mumbai's FSI was recently updated to reflect the city's expanding population and rising demand for real estate. The Government of India authority establishes the standards for determining the Financial Stability Index (FSI) in various parts of Mumbai.

What is FSI in Mumbai?

The floor space index, or FSI, is the ratio of a plot's total built-up area to its accessible plot area. In Mumbai, it is also referred to as the floor area ratio, or FAR. This can also be thought of as the largest floor area that a developer is allowed to build on a specific plot of land. A building can have more storeys added to it if the FSI is high.

How To Calculate FSI In Mumbai Municipal Corporation?

The FSI calculation formula is as follows:

FSI is equal to a floor's total area / a plot's gross area.

Mumbai's FSI laws and regulations are subject to change in accordance with NBC's revisions. Use the FSI Calculator Mumbai for accurate figures.

What Characteristics Of FSI Exist In Mumbai?

The following variables affect the value of freehold stratum in Mumbai's many districts: the total area of all properties; the nature or purpose of a building, such as residential, commercial, or industrial; and so on.

• The building's location

• The amenities that come with the land

In addition, the type of accessible area, population dynamics, growth models, and the construction exercise all play a role.

Mumbai's FSI for residential construction

For the development strategy, the Maharashtra government or the regulatory body uses a transit orientation. It permits the urban planning plans to maintain the highest FSI at various places. Up to five can be the value. The following are the FSI value categories:

Minimum size of the plot (sq m) 9-12m, Minimum size of the plot (sq m), Below 1,000, Permissible maximum FSI 2
Minimum size of the plot (sq m) 12-18m, Minimum size of the plot (sq m),Above 1,000, Permissible maximum FSI 2.5

Minimum size of the plot (sq m) 18-24m, Minimum size of the plot (sq m), Above 2,000, Permissible maximum FSI 3
Minimum size of the plot (sq m) 24-30 m, Minimum size of the plot (sq m), Above 3,000, Permissible maximum FSI 3.5
Minimum size of the plot (sq m) 30m and above, Minimum size of the plot (sq m), Above 4,000, Permissible maximum FSI 4-5

These figures are for the residential buildings in Mumbai. Every project has to follow this code for constructing new premises in the city. For the suburbs, the FSI value has been set to 2.5 for the same category of residential buildings.

FSI In Mumbai 2023 for commercial/office buildings

Building type- Biotechnology, FSI- FSI 3, 4, 5 for road frontage 12, 18, 30 m, respectively.

Building type- IT/ITeS, FSI-3, 4, 5 for road frontage 12, 18, 27 m, respectively.
Building type- Smart fintech centers, FSI of 3.0 for plot up to 2,00,000 sq m, FSI of 4.0 for plot over 2,00,000 sq m

To Calculate FSI For Redevelopment?

You must take the following actions in order to determine the FSI for redevelopment in Mumbai:

Step 1: Establish the size of the plot

Step 2: Determine the existing built-up area, taking into account all structures already on the plot, including the old building that is being redeveloped, if applicable

Step 3: Multiply the plot size by the FSI to determine the permissible built-up area

Step 4: Subtract the permissible built-up area from the existing built-up area to determine the additional built-up area that can be constructed

Step 5: Determine the FSI for the additional built-up area by dividing the additional built-up area by the plot size.

In Mumbai, the current FSI for redevelopment is 1.10.

The Floor Space Index (FSI) is the ratio obtained by dividing the entire built-up area of all floors by the total size of the site on which it is built. For instance, if you have 1000 square feet of property that you would want to develop into a residential or commercial building, you are allowed to build up to 1500 square feet of covered space on the plot provided that your locality's FSI is 1.5.

One or two stories or a single dwelling unit can also be compromised while building apartments, but the total area should not exceed 1500 square feet. It is imperative that you incorporate a stairwell and additional structures within the 1500 square feet.

What is the significance of FSI in Mumbai?

The following succinctly summarizes the relevance of FSI value:

Optimizes the proportion of developed to open space; oversees the city's ecology; guarantees a project's steady development; and maintains a balance between the development of residential and commercial complexes and planned, supported growth.

The FSI value for residential properties was amended by the government to be 3 and FSI for Commercial Building in Mumbai to be 5.

What is premium FSI in Mumbai?

Premium FSI is the fee you pay the government to raise the permitted FSI (Floor Space Index). In Mumbai, paid FSI represents 25–33 percent of the project's value.

A vital component of any real estate development is FSI. Developers must follow the specified FSI in order to prevent infractions and harsh consequences. A building's FSI should also be confirmed by prospective buyers before making an investment in the venture.

What Is Permissible FSI In Mumbai?

In the city, the allowable FSI for commercial buildings is 5, as opposed to 1.33 previously. In the suburbs of Mumbai, the FSI for residential buildings is 2.5 as opposed to 2, and for commercial buildings it is 5 as opposed to 2.5 prior. FSI according to Mumbai regulations.

Conclusion

In conclusion, the Floor Space Index is a crucial idea that has a big influence on how Mumbai's skyscrapers are developed. It aids in regulating the city's building density and overpopulation. In addition, it helps the city's traffic congestion and pollution levels to decrease. Before pursuing any of these choices, it is imperative that you comprehend the rules and regulations regarding FSI in Mumbai. You wish to boost the FSI of your building there.

With any luck, this guide has given you a better understanding of the fundamentals, importance, and impact of Mumbai's Floor Space Index on building development.

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FSI In Mumbai: How To Calculate Floor Space Index?

What is FSI in Mumbai?

How To Calculate FSI In Mumbai Municipal Corporation?

What Characteristics Of FSI Exist In Mumbai?

Mumbai's FSI for residential construction

FSI In Mumbai 2023 for commercial/office buildings

To Calculate FSI For Redevelopment?

In Mumbai, the current FSI for redevelopment is 1.10.

What is the significance of FSI in Mumbai?

What is premium FSI in Mumbai?

What Is Permissible FSI In Mumbai?

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