The total cost of buying a flat, added up line by line
Last updated 2 November 2026
The total cost of a flat is its base price plus location and parking charges, GST if it is under construction, stamp duty, registration, deposits and loan costs. In the hypothetical example below, these lift an ₹80 Lakh base price to about ₹96 Lakh. Use the full number, not the base price, to set your budget and your loan.
What does a full cost look like?
Here is one hypothetical under-construction flat bought by a male buyer. Every figure is a made-up round number for illustration. It is not a price or a rate for any real project, and tax rates should be confirmed at the time of purchase.
| Line | How it is worked out | Hypothetical amount |
|---|---|---|
| Base price | Agreed price for the unit | ₹80 Lakh |
| Preferential location | Charged for a park-facing unit | ₹2 Lakh |
| Parking | One covered space | ₹2 Lakh |
| Agreement value | The three lines above | ₹84 Lakh |
| GST | 5% of ₹84 Lakh | ₹4.2 Lakh |
| Stamp duty | 7% of ₹84 Lakh | ₹5.88 Lakh |
| Registration fee | 1% of ₹84 Lakh | ₹84,000 |
| Maintenance deposit and advance | As set by the developer | ₹60,000 |
| Loan processing | As set by the lender | ₹30,000 |
| Legal and documentation | Your advocate’s fee and paperwork | ₹20,000 |
| Total | ₹96.02 Lakh |
In this example the buyer pays 20% more than the base price. Your percentage will differ, but the lesson holds. To run your own numbers, try the buying cost calculator.
Which costs change the most between flats?
The lines the developer sets change the most. GST and stamp duty follow fixed rules once the price is known. Location charges, parking, club fees and deposits vary from project to project, and some may not exist at all. That is why a higher base price can end up cheaper. Read our guide on how to read a builder cost sheet for each of these lines.
How does the sum change for a ready flat?
The GST line drops out when the sale happens after the completion certificate. In the table above that removes ₹4.2 Lakh. You should then compare carefully, because a ready flat may have a higher asking price. Stamp duty and registration still apply.
How does the sum change if a woman buys?
Stamp duty can fall by about 1% on a qualifying purchase, subject to the ₹1 Cr limit and current rules. On the example above, that is ₹84,000 less. See how stamp duty works in Lucknow for how this is applied, and confirm it at the registry.
What is not on the table but still costs money?
Several real costs never appear on a cost sheet. Plan for them separately.
- Interest on the part of the loan already disbursed during construction.
- Rent, if you are paying it while your flat is built.
- Furnishing, electrical fittings and wardrobes.
- Moving costs and utility connection deposits.
- Ongoing maintenance and property tax after possession.
How do you turn this into a budget?
Start from what you can pay in total, then work backwards. Take your own funds plus the loan you are sure of, and keep a buffer for delay. Remove the cost lines from that total and you have the agreement value you can afford.
That figure tells you where to look. If it lands near ₹1 Cr, start with flats under ₹1 Cr in Lucknow. If you have more room, look at homes from ₹1 Cr to ₹2 Cr. The Lucknow property price guide helps you test whether a figure is realistic for an area.
Frequently asked questions
How much extra should I keep above the flat's price?
There is no fixed percentage, because it depends on the charges and on whether GST applies. Get a written cost sheet for the actual unit and add the stamp duty, registration and loan costs to it. In our hypothetical example the extra came to 20% of the base price.
Is TDS an extra cost when buying a flat?
No. Where it applies, the buyer deducts it from the amount paid to the seller and deposits it with the tax department. You must still handle the filing, so it is a task, not a cost.