The developer quotes you ₹1.5 Cr for a 3 BHK. You do the math, arrange the loan, and feel good about the budget. Then the cost sheet arrives — and suddenly you’re looking at a number that’s ₹20–25 lakhs higher than what was discussed.
This is the most common financial shock in Kolkata real estate, and it is entirely avoidable if you know what to look for. This guide breaks down every cost that sits on top of the base price — with real numbers, so you can plan accurately before you book.
Why the base price is never the final price
Developers in Kolkata quote a Basic Sale Price (BSP) per sq. ft. — typically calculated on super built-up area. On top of that, every project layers statutory charges, preferential charges, one-time deposits and registration costs. Some are mandatory, some are project-specific, and a few are negotiable. All of them are real money.
A flat quoted at ₹1.5 Cr can easily cost ₹1.75–1.80 Cr all-in. At the ₹3 Cr level, the gap can cross ₹40–50 lakhs. The sooner you calculate the full number, the better your financial planning.
The complete list of costs
1. GST — 5% on under-construction flats
If the project is under construction and does not yet have an Occupancy Certificate, GST applies at 5% of the base sale price. On a ₹1.5 Cr flat, that is ₹7.5 lakhs. On ₹3 Cr, it is ₹15 lakhs.
The exception: Ready-to-move flats with a valid Occupancy Certificate are exempt from GST entirely. This is one of the most overlooked cost differences between an under-construction and a ready property — and it can swing the comparison significantly. Affordable housing (carpet area under 60 sq. m., price under ₹45 lakhs) attracts GST at 1% instead of 5%.
2. Stamp duty and registration — 7–8% of market value
West Bengal currently levies:
- Stamp duty: 6% for properties up to ₹1 Cr in municipal/urban areas; 7% above ₹1 Cr
- Registration charges: 1% of market value, across the board
- In rural/panchayat areas: 5% up to ₹1 Cr, 6% above ₹1 Cr
On a ₹1.5 Cr flat, expect ₹10.5–12 lakhs in stamp duty and registration. On ₹3 Cr, that figure climbs to ₹21–24 lakhs. Both are calculated on the higher of circle rate or agreement value — not just the price on paper.
Note: The West Bengal government has periodically offered stamp duty rebates. Always verify the current applicable rate on the official West Bengal Registration portal at the time of your purchase.
3. Preferential Location Charges (PLC)
PLC is charged by developers for units with a perceived advantage — a higher floor, park-facing view, corner layout, specific directional orientation, or distance from the lift lobby. Typical ranges in Kolkata premium projects:
- High-floor premium: ₹50–₹200 per sq. ft. on super built-up area
- Park or open-view facing: ₹100–₹300 per sq. ft.
- Corner unit: ₹75–₹150 per sq. ft.
On a 1,500 sq. ft. super built-up apartment, even a moderate PLC of ₹200 per sq. ft. adds ₹3 lakhs. Luxury projects with high-floor penthouses and exclusive views can charge PLC of ₹500+ per sq. ft. Always ask for the full PLC schedule before choosing a unit — the sales team will often show you the most desirable unit first, which is also the one with the highest PLC load.
4. Car parking charges
Covered or multi-level parking is charged separately and is almost never included in the base price. Typical ranges:
- Covered stilt or podium parking: ₹3–5 lakhs per space
- Multi-level mechanical parking: ₹2–3.5 lakhs per space
- Open parking: ₹50,000–₹1.5 lakhs
Most 3 BHK apartments come with one mandatory parking space. Larger apartments and penthouses typically need two spaces, adding ₹6–10 lakhs. In some luxury projects, two or three spaces are bundled — verify this upfront.
5. Club membership and amenity charges
Projects with a clubhouse — pool, gymnasium, sports courts, banquet hall, mini theatre — typically charge a one-time club membership fee of ₹1–5 lakhs, depending on the scale of the facility. Some developers call this an “amenity contribution” or “infrastructure development charge.” The name varies; the cost is real and is separate from monthly maintenance.
6. Maintenance deposit (corpus fund)
At possession, most projects collect an advance maintenance deposit — typically 24 months of maintenance charges upfront, held as a corpus fund for long-term building upkeep.
Maintenance charges in Kolkata premium projects range from ₹2–₹5 per sq. ft. per month. For a 1,500 sq. ft. apartment at ₹3/sq. ft.: monthly maintenance is ₹4,500, making the 24-month corpus deposit approximately ₹1,08,000. For luxury projects with larger floor plates, this deposit can reach ₹3–5 lakhs.
7. Legal and documentation charges
Developers charge for preparing and registering the sale agreement and sale deed. These typically include:
- Agreement to Sale preparation and stamping: ₹10,000–₹25,000
- Builder’s legal and documentation fee: ₹10,000–₹50,000 (varies by developer)
If you engage an independent property lawyer to verify title documents and the sale agreement — which is advisable for any purchase above ₹1 Cr — budget an additional ₹15,000–₹50,000 for legal due diligence.
8. Home loan processing and related charges
If you are taking a home loan, factor in:
- Processing fee: Typically 0.25–1% of the loan amount. On a ₹1 Cr loan, that is ₹25,000–₹1 lakh.
- Loan insurance (home loan protection plan): Often offered at sanction — not mandatory, but can add ₹50,000–₹2+ lakhs depending on loan size and tenure.
- Bank’s technical valuation and legal fee: ₹5,000–₹15,000.
9. GST on ancillary charges
GST applies not just to the flat price but also to several developer-levied charges — including club membership fees, maintenance deposits collected before OC, and other ancillary services. These flow at the 18% rate on applicable heads. Always ask for a GST-inclusive cost sheet, not just the base price sheet.
10. Interior and fit-out costs
This is not a statutory charge, but it blindsides a large number of buyers — especially those buying bare shell apartments. A bare shell unit requires flooring, kitchen fittings, bathroom fixtures, woodwork, lighting, AC installation and painting before it is liveable.
In Kolkata’s premium segment, a basic to mid-range interior fit-out costs ₹800–₹1,500 per sq. ft. of carpet area. A luxury fit-out can exceed ₹2,500 per sq. ft. For a 1,200 sq. ft. carpet area apartment, budget ₹10–30 lakhs for interiors depending on specification — before you can move in.
What the all-in cost actually looks like
Here is a worked example for a ₹2 Cr under-construction 3 BHK in a premium Kolkata project:
| Cost Head | Approx. Amount |
|---|---|
| Base Sale Price | ₹2,00,00,000 |
| GST @ 5% | ₹10,00,000 |
| Stamp Duty & Registration (~8%) | ₹16,00,000 |
| Preferential Location Charges | ₹3,00,000 |
| Car Parking (1 covered space) | ₹4,00,000 |
| Club Membership | ₹2,00,000 |
| Maintenance Deposit (24 months) | ₹1,50,000 |
| Legal & Documentation | ₹30,000 |
| Home Loan Processing Fee | ₹50,000 |
| Total All-In Cost | ~₹2,37,30,000 |
The same apartment presented at ₹2 Cr costs approximately ₹2.37 Cr to reach possession — before interiors. Add a mid-range fit-out and the real number crosses ₹2.5 Cr. This is not unusual. It is the norm for premium Kolkata real estate. The buyer who plans for it is in control; the buyer who discovers it after booking is not.
The one thing to always ask for
Before booking any flat in Kolkata — new launch or resale — ask the developer or agent for a full cost sheet that itemises every charge beyond BSP. A credible developer will provide this without hesitation. If the sales team is reluctant to show you the complete picture upfront, that tells you something important about how they do business.
At Sidus Realty, every enquiry includes a complete, all-in cost breakdown — so you know the real number before you decide, not after. See current projects or speak to our team.
Frequently asked questions
Is GST applicable on resale flats? No. GST applies only to under-construction properties. Resale flats and ready-to-move flats with an Occupancy Certificate are exempt.
Can I negotiate PLC or parking charges? PLC is generally non-negotiable in premium projects during launch. Parking is fixed by the developer. However, in a slow-moving project or if you are buying multiple units, there may be room to negotiate on ancillary charges.
Is the maintenance deposit refundable? The corpus fund is typically held by the Residents’ Welfare Association and is not returned to you — it stays with the building for long-term maintenance. It effectively transfers to the new owner if you sell.
Are all these charges included in the home loan? No. Banks typically fund only the base sale price and, in some cases, PLC and parking. Stamp duty, registration, club membership and fit-out costs must be arranged from your own funds. Plan at least 15–20% of the BSP as your own contribution over and above the down payment.
Do these costs apply to commercial property purchases too? Broadly yes, with some differences — stamp duty rates for commercial property vary, and GST on commercial purchases works differently. Speak to a tax advisor for commercial-specific figures.
Disclaimer: All figures are indicative for 2026 based on current West Bengal regulations and market norms, and are subject to change. Verify applicable rates with your developer, legal advisor and the official West Bengal Registration portal before finalising any purchase.
