Builder-buyer agreement is a contract between a real estate developer (promoter) and a purchaser (allottee) setting out the terms, conditions, specifications, and timeline for the sale of an apartment, plot, or building in a real estate project. Under Indian law, the builder-buyer agreement is governed by Section 13 of the Real Estate (Regulation and Development) Act, 2016 (RERA), which mandates that the promoter must enter into a registered agreement for sale with the allottee before accepting more than 10% of the apartment cost.
Legal definition
Section 13 of RERA 2016 provides:
Section 13(1): A promoter shall not accept a sum more than ten per cent of the cost of the apartment, plot, or building as the case may be, as an advance payment or an application fee, from a person without first entering into a written agreement for sale with such person and register the said agreement for sale, under any law for the time being in force.
Section 2(l) of RERA defines "agreement for sale":
Section 2(l): "agreement for sale" means an agreement entered into between the promoter and the allottee.
Section 13(2) mandates that the agreement must be in the form prescribed by state RERA rules, and must include:
- The particulars of the apartment, plot, or building as the case may be
- The project plans approved by the competent authority
- The specifications of the apartment including fixtures, fittings, and amenities
- The date of possession
- External and internal development activities
- The details of the carpet area (not super built-up area)
- The rate per square feet based on carpet area
- Common areas and facilities
- Parking allocation
How courts have interpreted this term
Pioneer Urban Land and Infrastructure Ltd. v. Union of India [(2019) 8 SCC 416]
The Supreme Court upheld the constitutional validity of RERA and the Insolvency and Bankruptcy Code provisions treating allottees as "financial creditors." The Court held that the builder-buyer relationship is not merely contractual but involves a fiduciary dimension, as the buyer entrusts substantial funds to the developer based on promises regarding specifications, amenities, and timelines. This landmark ruling significantly strengthened homebuyer rights.
Newtech Promoters and Developers Pvt. Ltd. v. State of U.P. [(2022) 1 SCC 429]
The Supreme Court held that the allottee's right to seek interest for delayed possession under Section 18 of RERA is unqualified, and the builder cannot seek to set off any amounts or conditions against this statutory right. The Court emphasized that the builder-buyer agreement must be read subject to RERA's overriding provisions, and any clause in the agreement that derogates from the allottee's statutory rights is void.
Fortune Infrastructure v. Trevor D'Lima [(2018) 5 SCC 442]
The Supreme Court held that one-sided builder-buyer agreements containing unconscionable terms — such as clauses allowing the builder unlimited extensions for possession while penalising the buyer for delayed payments — are unfair and can be struck down. The Court observed that the unequal bargaining power between the builder and an individual buyer necessitates statutory intervention to protect the weaker party.
Why this matters
The builder-buyer agreement is the foundational document of every real estate purchase from a developer in India. Before RERA's enactment in 2016, these agreements were notoriously one-sided, drafted entirely by the developer and containing clauses that heavily favoured the builder — including vague possession timelines, unilateral escalation clauses, and sweeping force majeure provisions. Buyers had virtually no negotiating power.
RERA 2016 transformed this landscape. The mandatory use of carpet area (not the inflated super built-up area) for pricing, the requirement to specify a clear date of possession, the obligation to register the agreement with the Sub-Registrar, and the prohibition on accepting more than 10% before the agreement is executed have collectively empowered homebuyers. The state RERA authorities now have the power to adjudicate complaints arising from breaches of the agreement, with the power to order refunds, interest for delays, and compensation.
For practitioners, several critical points merit attention. First, the agreement must be in the form prescribed by the state RERA rules — deviation can result in penalties. Second, the possession date in the agreement is the benchmark for computing delay and interest under Section 18 of RERA. Third, any clause in the builder-buyer agreement that contravenes RERA is void to that extent. Fourth, the agreement must be registered under the Registration Act, 1908, and stamp duty is payable as per the applicable state stamp rules.
Related terms
Parent concepts:
Related documents:
Related procedures:
Frequently asked questions
Is a builder-buyer agreement the same as a sale deed?
No. A builder-buyer agreement is a contract for a future sale — it records the terms on which the developer will transfer the apartment to the buyer upon completion. It does not transfer ownership. Ownership is transferred only when the sale deed (or conveyance deed) is executed and registered after the builder obtains the occupancy or completion certificate and hands over possession.
Can a builder charge more than 10% before the agreement is signed?
No. Section 13(1) of RERA 2016 prohibits the promoter from accepting more than 10% of the apartment cost as advance payment or application fee without first entering into a registered agreement for sale with the allottee. Violation of this provision attracts penalties under RERA.
What happens if the builder delays possession beyond the agreed date?
Under Section 18 of RERA, if the promoter fails to hand over possession by the date specified in the agreement, the allottee is entitled to either (a) withdraw from the project and obtain a refund with interest, or (b) continue in the project and claim interest for every month of delay until possession is delivered. The interest rate is prescribed by the state RERA authority.
Are builder-buyer agreements subject to the Consumer Protection Act?
Yes. The Supreme Court in Imperial Structures v. Surinder Anil Patni held that RERA does not bar the jurisdiction of the Consumer Protection Act. Homebuyers can file complaints before both the RERA authority and the consumer forum, though they cannot claim relief from both for the same cause of action.
This entry is part of the Veritect Indian Legal Glossary, a comprehensive reference of Indian legal terminology grounded in statutory text and judicial interpretation.
Last updated: 2026-03-27. Veritect provides this content for informational purposes and does not constitute legal advice.