In early 2026 a family in Chennai reached the agreed possession month for a flat in a Porur project, packed and ready to move, only to be told the handover had slipped by another year. They had paid almost the full price. What they did not know that morning was that the law already gave them two clear choices and a right to interest for every month of the delay, without having to prove the builder acted in bad faith. That right sits in Section 18 of the national real estate law, and understanding it is the difference between waiting helplessly and negotiating from strength.

The short answer. Under Section 18 of the Real Estate Regulation and Development Act, if a promoter fails to hand over possession by the date in your agreement, you may either withdraw and claim a full refund of what you paid with interest, or stay in the project and claim interest for every month of delay until possession. The trade off worth knowing is that withdrawing ends the relationship and returns your money, while continuing keeps the flat and adds delay interest, so the right choice depends on whether you still want that specific home.

What does Section 18 actually give a delayed buyer?

Section 18 gives you a statutory remedy the moment the promoter misses the possession date written into your agreement for sale. You do not have to show negligence or bad faith, only that the agreed date has passed without handover. From that point the law offers two paths. You may withdraw from the project, in which case the promoter must return the entire amount you have paid, together with interest and, where applicable, compensation. Or you may choose to continue, in which case the promoter must pay you interest for every month of delay until possession is actually given. The choice is yours as the allottee, not the builder's, which is what makes the section such a powerful protection for an ordinary buyer facing a stalled project.

This remedy applies to the date in the agreement, so the possession clause you sign is central. A vague or heavily qualified possession date weakens your position, while a clear date strengthens it, which is why reading that clause carefully before you sign matters as much as invoking the section afterwards.

Should you withdraw or continue?

The answer depends on whether you still want that particular flat, and on your own financial position. Withdrawing suits a buyer who has lost confidence in the project or the developer, or who cannot keep servicing a loan on a home that may never arrive. It returns your money with interest and lets you move on, but it also ends any claim to the flat itself. Continuing suits a buyer who still wants the home, believes it will be completed, and would rather collect delay interest than restart the search in a risen market. Neither choice is a failure. They are simply different responses to the same breach, and the law deliberately leaves the decision with you rather than the promoter.

A practical point often missed is that choosing to continue does not waive your right to the delay interest. You can accept possession when it finally comes and still pursue the interest that accrued for the months you waited, provided you assert the claim properly rather than signing it away in a settlement you did not read.

How is the interest calculated?

The interest is charged at the rate prescribed under the rules, applied for each month of delay rather than as a token lump sum. Across most states the prescribed rate is the State Bank of India highest marginal cost of lending rate plus 2 percent, and the same rate is meant to run both ways, so the rate a builder would charge you for a late payment is broadly the rate you can claim for a late handover. Because the exact rate and the way it is applied are set by the state rules and revised over time, confirm the current figure under the Tamil Nadu rules before you rely on a specific number. The principle to hold on to is that the interest is a defined, rule based entitlement, not a favour you must plead for.

Read the table as a decision aid rather than a verdict. The rupee value of each path turns on how much you have paid, how long the delay runs and where prices have moved, so run the numbers on your own case before you commit to withdrawing or continuing.

How and where do you enforce the right in Chennai?

You enforce it by filing a complaint with the Tamil Nadu Real Estate Regulatory Authority, which adjudicates disputes between buyers and promoters in the state. The forum exists precisely so that a buyer does not have to fund a civil suit to claim what the statute already grants. You file the complaint with your agreement, your payment records and the correspondence showing the missed possession date, and the authority can direct the refund with interest or the delay interest as the case may be. Reported practice under the Tamil Nadu framework points to refunds being processed within a defined window once ordered, so keeping your paperwork complete speeds the outcome. The authority is a specialised forum meant to be quicker and cheaper than a regular court, which is a large part of why the law routes these disputes to it. A well organised complaint, with the missed date documented and every payment receipt attached, gives the adjudicating officer a clean record to act on and leaves the promoter little room to contest the basic facts. Our guide to the Section 13 limit on advance booking payments covers a related protection that applies earlier, at the booking stage.

How does Section 18 sit with your loan and the occupancy certificate?

Section 18 protects the possession promise, while your loan and the occupancy certificate govern whether the home is legally ready to live in. A delay that triggers Section 18 often runs alongside a home loan you are still servicing, which is why the interest entitlement matters so much, it offsets the cost of paying for a flat you cannot yet occupy. Possession in the real sense also means possession of a completed flat with a valid occupancy certificate, not merely keys to an unfinished unit, so a handover offered without that certificate can itself be incomplete. Before you accept possession and close your Section 18 claim, confirm the flat is genuinely ready, since accepting keys to an incomplete unit can weaken a claim you have not yet settled. Our companion guide to verifying a project on the Tamil Nadu RERA portal shows where the registered timeline that anchors your claim is recorded.

How do you invoke Section 18, step by step?

Treat the process as a sequence you follow once the agreed date has passed. Working through these steps builds the record you will need if the matter reaches the authority.

1. Locate the exact possession date written in your registered agreement for sale.
2. Confirm that date has passed without a valid handover backed by an occupancy certificate.
3. Decide, on your own finances, whether you want to withdraw for a refund or continue for delay interest.
4. Send the promoter a written notice stating the breach and the remedy you are claiming.
5. Gather your agreement, all payment receipts and the correspondence into a single file.
6. File a complaint with the Tamil Nadu Real Estate Regulatory Authority setting out your claim.
7. Confirm the prescribed interest rate under the Tamil Nadu rules so your claimed figure is accurate.

Anchor the whole exercise in the specific project and agreement you hold. A buyer weighing a launch such as Prestige Park Street at Velachery should read the possession clause closely before signing, because that single date is what Section 18 will later measure the builder against.

Frequently asked questions

What is Section 18 of RERA?

Section 18 is the provision that protects a buyer when a promoter fails to hand over possession by the date in the agreement. It lets the allottee either withdraw and claim a full refund with interest, or continue in the project and claim interest for every month of delay until possession is actually given.

Can I get a refund if my Chennai builder delays possession?

Yes. If the promoter misses the agreed possession date, Section 18 lets you withdraw and claim a full refund of what you paid, together with interest and any applicable compensation. You enforce this by filing a complaint with the Tamil Nadu Real Estate Regulatory Authority with your agreement and payment records.

What interest can I claim for delayed possession?

You can claim interest at the rate prescribed under the rules for every month of delay. Across most states that rate is the State Bank of India highest marginal cost of lending rate plus 2 percent, but because it is set by state rules and revised over time, confirm the current figure under the Tamil Nadu rules before relying on a number.

Do I lose the flat if I claim delay interest?

No. Choosing to continue in the project and claim interest for the delay does not cost you the flat. You keep your claim to the home and receive it on handover, while still pursuing the interest that accrued during the wait, provided you assert that claim rather than signing it away in a settlement.

The rights described in this guide reflect Section 18 of the Real Estate Regulation and Development Act as explained in this overview of the Section 18 refund and interest remedy. Because the prescribed interest rate and procedural timelines are set by the state rules and revised over time, always confirm the current position with the Tamil Nadu Real Estate Regulatory Authority before you act.

Last updated 2026-08-13. PropNewz Team.