Gurgaon Building & Buyer Guide · 20 September 2026
FSI and FAR in Gurgaon: Meaning, Formula, Calculation and Due Diligence
Learn how floor area is calculated, why FAR is not the same as ground coverage or super built-up area, and which approvals to examine before buying a plot, builder floor, independent house or commercial property in Gurgaon.
Prepared by Shubh Estate Brokers · Documentation-first guidance from Arun Madaan
The short answer
What do FSI and FAR mean?
FSI, or Floor Space Index, and FAR, or Floor Area Ratio, generally describe the same planning measure: the relationship between the floor area counted under the applicable regulations and the area of the plot. The number helps define construction potential, but the sanctioned plan also depends on coverage, setbacks, height, parking, use, access and other conditions.
Calculation
FSI and FAR formulas with examples
Calculate FSI used
FSI = Counted floor area ÷ Plot area
If 3,000 sq. ft. of floor area is counted on a 2,000 sq. ft. plot, the FSI used is 1.5.
Calculate FAR percentage
FAR (%) = FSI × 100
An FSI of 1.5 is equivalent to FAR of 150%. An FSI of 2.0 is equivalent to FAR of 200%.
| FSI | Equivalent FAR | Combined counted floor area |
|---|---|---|
| 1.0 | 100% | Equal to the plot area |
| 1.5 | 150% | 1.5 times the plot area |
| 2.0 | 200% | 2 times the plot area |
| 2.5 | 250% | 2.5 times the plot area |
Worked example
FAR calculation for a 300 sq. yd. plot
- 1. Convert the plot area: 300 sq. yd. × 9 = 2,700 sq. ft.
- 2. Use the verified applicable FAR: If the sanctioned entitlement were 200%, the calculation would be 2,700 × 2.0.
- 3. Preliminary result: 5,400 sq. ft. of combined FAR-counted floor area, subject to the sanctioned plan and every other applicable condition.
This illustration does not establish that 200% FAR applies to a particular Gurgaon plot. Obtain the property-specific entitlement from the competent authority or a qualified architect before relying on the result.
Do not confuse these measurements
FAR vs ground coverage, carpet area and super area
Ground coverage
The portion of the plot occupied by the building footprint at ground level. It does not by itself state the combined area across all floors.
Carpet area
The net usable area within a unit under the applicable definition. It is not the development potential of the complete plot.
Built-up area
A property-area measure that generally adds wall and certain attached covered areas to the usable internal area.
Super built-up area
A sale or marketing measure that may allocate a share of common areas. It should not be treated as the plot's permissible FAR.
Included and exempt areas
What may count towards FAR?
Habitable rooms, kitchens, bathrooms, internal passages, walls and enclosed additions commonly affect counted floor area. The treatment of basements, stilt parking, balconies, lift areas, service spaces, stairs and machine rooms depends on the relevant rules and the sanctioned use. Do not treat a general internet list as proof that a particular area is exempt.
Base and additional development rights
What is purchasable FAR?
Certain property categories may be eligible for additional development rights after prescribed charges and approvals. Availability should never be assumed. Confirm the property's eligibility, the applicable calculation, payment records and the revised sanctioned plan. Payment of a charge alone should not be treated as approval for construction that is absent from the sanctioned drawing.
Builder floors and Stilt+4
Why current approval status must be checked property by property
Policies affecting independent floors and stilt-plus-four construction have been subject to government conditions, infrastructure considerations and legal proceedings. Buyers should verify the present position on the transaction date and examine the actual sanctioned plan, floor configuration and occupation status of the building. The existence of a constructed fourth floor is not proof of approval.
Buyer checklist
How to check FAR before buying property in Gurgaon
Obtain the sanctioned building plan and identify the approving authority.
Match the plot area and dimensions with the title, allotment and conveyance records.
Compare the sanctioned drawing with the building as physically constructed.
Check road width, setbacks, ground coverage, height, parking and permitted use.
Review the occupation or completion documentation applicable to the property.
Ask for approval and payment records supporting any additional or purchasable FAR.
Check whether balconies, terraces, basements or stilt areas were later enclosed.
For a developer project, compare the available Haryana RERA disclosures and approved plans.
Common mistakes
Four assumptions buyers should avoid
Built means approved
Physical construction does not prove that the building or every alteration was sanctioned.
Super area equals FAR
A project's marketed super area and a plot's planning entitlement measure different things.
Parking can become a room
Changing an approved parking or service area may violate the plan, use and safety conditions.
An online calculator is final
A calculator cannot determine the property category, current rules or sanctioned conditions.
Frequently asked questions
FSI and FAR FAQs
What is the full form of FSI and FAR?
FSI means Floor Space Index and FAR means Floor Area Ratio. Both describe the relationship between the floor area counted under applicable rules and the total plot area.
Is FSI different from FAR in Gurgaon?
They generally describe the same planning concept. FSI is commonly shown as a decimal, while FAR may be shown as a ratio or percentage. Always check the convention used in the applicable approval or regulation.
What is the permissible FAR for a residential plot in Gurgaon?
There is no single FAR figure for every Gurgaon plot. It can depend on plot size, land use, colony or sector conditions, road width, zoning, building category, purchased development rights and the regulations or orders currently applicable to the property.
Is stilt parking counted in FAR in Gurgaon?
The treatment of a stilt area depends on its sanctioned use and the rules applicable to the property. An open parking area should not be assumed to remain exempt if it is enclosed or converted to another use.
Can a bank reject a home loan if construction exceeds the sanctioned plan?
Material deviations can affect legal clearance, technical valuation or loan eligibility. The lender makes the final decision under its own policy after reviewing the property and documents.
Important disclaimer
This guide is educational and is not legal, architectural or municipal advice. Building regulations, purchasable FAR, fees, approval processes and court or government directions can change. Obtain property-specific advice from the competent authority and qualified professionals before buying, selling, financing, constructing or redeveloping property.