Builder delaying possession? Your rights under RERA, with the maths

Delayed possession is the single most common grievance in Indian real estate. It is also the grievance where the law is most clearly on your side, with a formula, a forum and a track record of orders. By September 2025, RERA authorities across India had disposed of more than 1.47 lakh complaints, and delay cases form the largest share of them. This guide explains exactly what you are entitled to, how to compute it in rupees, and how to build the file that wins.

The legal foundation: Section 18#

Section 18 of the Real Estate (Regulation and Development) Act is short enough to summarise in two sentences. If the promoter fails to complete or hand over the apartment by the date specified in the agreement for sale, you have a choice. Either you withdraw from the project and get back the full amount paid, with interest at the prescribed rate, or you stay in the deal and the promoter pays you interest for every month of delay until possession is handed over.

The choice is yours, not the builder's. That matters: builders often present continued waiting as the only option, sometimes sweetened with a rent offer. The statute says otherwise.

Remedy 1: stay invested, collect monthly interest#

If you want the flat and can wait, the promoter owes you interest on everything you have paid, for each month past the promised date. Most state rules set the rate at the State Bank of India marginal cost of funds based lending rate plus 2 percent.

Worked example. Suppose you have paid Rs 60 lakh, the promised possession date passed 14 months ago, and the applicable SBI MCLR is 9 percent, making the prescribed rate 11 percent per year.

• Annual interest: 11 percent of Rs 60,00,000 is Rs 6,60,000.
• Monthly interest: about Rs 55,000.
• For 14 months of delay: roughly Rs 7,70,000.

That is not a token payment. On a mid-range Pune or Bengaluru flat, delay interest routinely exceeds the booking amount. It also reprices the builder's incentive: every month of further delay now costs them real money.

Remedy 2: exit with a full refund plus interest#

If your circumstances changed or your confidence in the project is gone, you can withdraw. The promoter must refund the entire amount you paid, with interest at the same prescribed rate, generally computed from the dates of your payments. In the example above, a buyer two years past their payments could be looking at a refund north of Rs 70 lakh on Rs 60 lakh paid.

Two honest cautions. First, refund orders are only as good as the promoter's ability to pay; recovering from a genuinely insolvent builder can require execution proceedings, and in the worst cases insolvency courts. Second, if the project is nearly done, interest plus possession often beats a refund fought over years. Decide on the project's real progress, not on anger, and on where the project sits in the stall sequence our stalled projects data story maps.

What counts as "the promised date"#

This is where most disputes are actually fought.

1. The agreement for sale is primary. The possession clause, including any grace period the builder wrote in, is the contractual date. Grace periods of 6 to 12 months are common and generally honoured by authorities if clearly drafted. Remember also that possession legally worth taking means possession with an occupancy certificate; our OC versus CC guide covers what to demand at handover.
2. The RERA registration carries the completion date the promoter declared to the regulator, visible on the project page and its extensions. A builder who quietly extended the RERA date has not moved your contractual date. Your agreement still governs your claim. Nor does a change of builder move it: when a project is transferred to a new promoter under Section 15, the new promoter takes on your agreement with its original date.
3. Brochures and verbal promises carry the least weight, though advertisements are actionable under RERA if they misled you.

Build the evidence file before you act#

Winning a Section 18 case is mostly paperwork discipline. Collect:

• The registered agreement for sale, with the possession clause flagged.
• Every payment receipt and bank statement entry, in a dated list.
• The project's RERA page as it stands today: completion date, extensions, status. The portal shows only the current state, so save a dated copy each quarter; that is how you show what the promoter claimed at the time. The same filing is set out on its ReraGenie project page.
• All builder communications: emails, letters, WhatsApp messages promising dates.
• A written demand letter to the promoter, sent before filing, stating the delay and your claim. Authorities view a documented attempt to resolve well.

The process, briefly#

You file the complaint with your state authority, online in most states, with a fee that is typically Rs 1,000 to Rs 5,000. Section 18 matters are heard by the authority or its adjudicating officer, and many are decided within months rather than years. MahaRERA reported a 137 percent disposal rate in 2025, clearing more cases than were filed that year. Our step-by-step guide to filing a RERA complaint covers forms, fees and hearings in detail, and the number you plead is arithmetic rather than argument: computing your delay interest claim works it in rupees. A promoter who loses can appeal, but not for free: the deposit rule that governs an MREAT appeal is what stops an appeal being used to buy another two years.

Before you buy: the delay you can avoid#

The best delay remedy is picking a builder who delivers. Delay risk is visible in advance to anyone who reads filings: past projects delivered late, repeated extensions, slowing construction percentages in quarterly reports. Our guide on checking a builder's track record shows the method, and every ReraGenie project page carries the promoter's delivery history next to the project's own progress, so the pattern is visible before the booking amount leaves your account.