What is PSF (Price Per Square Foot)?
PSF (Price per Square Foot) — PSF (price per square foot) is a property’s price divided by its area in square feet — the standard unit metric used to compare value across projects and localities. In India, divide the quoted price by the carpet area (the RERA-mandated basis) rather than super built-up area; a ₹76 lakh flat with 812 sq ft carpet area has a PSF of about ₹9,360. Comparing PSFs on the same area basis reveals which project is genuinely better value.
How to Calculate PSF
The formula is simply: PSF = total price ÷ area in sq ft. What changes the answer is which area (and which price) you use:
- Carpet-area PSF: price ÷ carpet area — the honest, RERA-comparable metric
- Super built-up PSF: price ÷ saleable area — looks 15–30% cheaper; only comparable within the same project type
- All-in PSF: add stamp duty + registration (7% in Kolkata municipal areas up to ₹1 Cr: 6% duty + 1% registration) before dividing, for a true cost comparison
Kolkata PSF Benchmarks (September 2026)
RealtyIQ tracks verified average PSF by locality from registered project data:
- New Town: ₹8,343/sq ft average (+7.04% YoY)
- EM Bypass: ₹9,200/sq ft average (+7.8% YoY)
- Rajarhat: ₹7,500/sq ft average (+11.5% YoY)
- Salt Lake: ₹8,200/sq ft average (+6.8% YoY)
- Konnagar (Hooghly side): ₹4,800/sq ft average (+9% YoY)
Why PSF Alone Can Mislead
Two flats at the same PSF can be very different deals. A project with 75% carpet efficiency at ₹8,000 super built-up PSF is cheaper per usable foot than one with 65% efficiency at ₹7,800. Before comparing, normalise: convert both to carpet-area PSF (divide by the carpet ratio) or compare total all-in cost for the carpet area you actually need.
Also check what the price includes — some developers quote a base PSF and load clubhouse/parking/EDC/IDC separately, which can add ₹300–600 per sq ft to the effective rate.
Where RealtyIQ Shows PSF
Every project page shows the locality’s average PSF next to the project’s starting price, and every locality page carries the tracked average PSF with its year-on-year growth — the same numbers behind the benchmarks above.
Frequently asked questions
What is a good PSF in Kolkata?
As of September 2026, verified Kolkata averages run from about ₹4,800/sq ft in Konnagar to ₹9,200/sq ft on EM Bypass; New Town averages ₹8,343/sq ft. Anything at or below the locality average for a comparable RERA-registered project is a fair starting point — then adjust for carpet efficiency, floor rise and inclusions.
Is PSF calculated on carpet area or super built-up area?
It can be quoted on either, so always ask which. RERA requires pricing transparency on carpet area, and comparing on carpet-area PSF is the only apples-to-apples way across projects — super built-up PSFs differ by each project’s loading and common-area share.
How do I compare two projects with different areas and prices?
Convert both to carpet-area PSF: divide each all-in price (including stamp duty and registration) by the carpet area. Then compare PSF per usable square foot — and check the loading-factor definition to see how much of each saleable area you actually occupy.
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