Sections 17-18 explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
Section 17 says a contract to sell or let immovable property cannot be specifically enforced in favour of a vendor or lessor who knew he had no title, or who cannot give a good title at the time fixed. Section 18 says that where the defendant sets up a variation of a written contract, the plaintiff gets performance only with that variation in three listed cases.
This article follows the consolidated text of the Act consulted (amendments shown up to Act 18 of 2018). Later amendments should be checked before you rely on any provision.
Section 17: a contract to sell or let immovable property cannot be specifically enforced in favour of a vendor or lessor (a) who knew he had no title when he contracted, or (b) who believed he had good title but cannot give a title that leaves no reasonable doubt at the time fixed. It applies to movable property as far as may be. Section 18: where the defendant sets up a variation of a written contract, the plaintiff gets performance only with that variation if there was fraud, mistake of fact or misrepresentation, a different legal object, or a later variation.
Section 17(1): the vendor or lessor with no title
Section 17 is headed "Contract to sell or let property by one who has no title, not specifically enforceable". Sub-section (1) says "A contract to sell or let any immovable property cannot be specifically enforced in favour of a vendor or lessor". The vendor is the seller and the lessor is the landlord. The rule restricts those two persons; it is the mirror of the rights given to the purchaser or lessee in section 13.
Clause (a) covers a vendor or lessor "who, knowing himself not to have any title to the property, has contracted to sell or let the property". The knowledge is the point: he knew he had no title and still contracted.
Clause (b) covers a vendor or lessor "who, though he entered into the contract believing that he had a good title to the property, cannot at the time fixed by the parties or by the court for the completion of the sale or letting, give the purchaser or lessee a title that leaves no reasonable doubt." Here the vendor honestly believed he had title. The bar arises because, at the time fixed for completion by the parties or by the court, he cannot give a title that leaves no reasonable doubt.
An invented example: Mahesh agrees to sell a plot to Farida believing the plot is his. On the date fixed for completion, a doubt over the chain of ownership remains that he cannot remove. Under section 17(1)(b) he cannot obtain specific performance against Farida.
If you are buying property and the seller's papers look uncertain, you can take advice on the agreement before you sign or pay.
Section 17(2): movable property
"The provisions of sub-section (1) shall also apply, as far as may be, to contracts for the sale or hire of movable property." As with section 13(2), the rule is carried over to movables only to the extent it fits.
| Clause | Vendor or lessor | Why specific performance fails in his favour |
|---|---|---|
| 17(1)(a) | Knew he had no title | He contracted knowing he had no title |
| 17(1)(b) | Believed he had good title | At the time fixed, cannot give a title that leaves no reasonable doubt |
| 17(2) | Seller or hirer of movable property | Same rules, as far as may be |
For the way a sale of immovable property operates under the Transfer of Property Act, see our posts on sale of immovable property under section 54 and on the difference between an agreement to sell and a sale deed.
Section 18: non-enforcement except with variation
Section 18 begins: "Where a plaintiff seeks specific performance of a contract in writing, to which the defendant sets up a variation, the plaintiff cannot obtain the performance sought, except with the variation so set up, in the following cases, namely". Three conditions come together: the contract is in writing, the plaintiff seeks specific performance, and the defendant sets up a variation. In the three cases below, the plaintiff gets performance only with the variation the defendant sets up.
Clause (a): "where by fraud, mistake of fact or mis-representation, the written contract of which performance is sought is in its terms or effect different from what the parties agreed to, or does not contain all the terms agreed to between the parties on the basis of which the defendant entered into the contact". Printing slip: "contact" should read "contract". So if fraud, mistake of fact or misrepresentation made the written contract differ from the real agreement, or left out a term on which the defendant entered the contract, the defendant's version of the variation prevails. For the concepts in the Contract Act, see our posts on fraud, on misrepresentation and on mistake of fact, mistake of law and one-sided mistake. The section numbers in those posts belong to the Contract Act.
Clause (b): "where the object of the parties was to produce a certain legal result which the contract as framed is not calculated to produce". The parties wanted a particular legal result, but the document as drafted would not produce it.
Clause (c): "where the parties have, subsequently to the execution of the contract, varied its terms". The parties themselves changed the terms after signing. For how a contract may be altered or replaced, see our post on the Indian Contract Act, 1872 on novation, rescission and alteration.
| Clause | Case | Result |
|---|---|---|
| 18(a) | Fraud, mistake of fact or misrepresentation made the writing differ from what was agreed or omit agreed terms | Performance only with the variation set up |
| 18(b) | Object was a legal result that the contract as framed is not calculated to produce | Same |
| 18(c) | Parties varied the terms after execution | Same |
Section 18 and rectification
Section 18 deals with a defendant who sets up a variation when sued for performance. The Act also has a separate remedy for correcting an instrument, in section 26; see our article on rectification of instruments. The two should not be confused: section 18 is about what the court will enforce when the defendant sets up a variation, not about altering the document.
Practical points
For sellers and lessors, confirm your title and the consents of others before agreeing a date for completion. For buyers and tenants, ask for the chain of title and keep the agreed completion date in writing. Where a written contract does not reflect the deal, record the true terms in correspondence and fix the document promptly, because section 18 can lead to performance only with the variation the other side establishes. The Act prints no period for these suits; for the period to sue, see the Limitation Act article on specific performance and compensation for breach of contract.
Need help with an agreement that may not match the deal?
Drafting the contract so that the writing, the title and the dates match is the surest protection, and a short review can find the gaps. You can ask for help with agreement drafting before the document is signed.
Key takeaways
- Section 17(1) bars specific performance in favour of a vendor or lessor who knew he had no title.
- It also bars one who believed he had title but cannot give a title that leaves no reasonable doubt at the time fixed.
- Section 17(2) applies the rule to movable property as far as may be.
- Section 18 applies where a plaintiff seeks performance of a written contract and the defendant sets up a variation.
- In the three cases in clauses (a) to (c), the plaintiff obtains performance only with the variation set up.
Read next
- Section 13 of the Specific Relief Act, 1963: rights of a purchaser or lessee against a seller with no title or imperfect title
- Section 26 of the Specific Relief Act, 1963: rectification of instruments
- Section 19 of the Specific Relief Act, 1963: relief against parties and subsequent transferees
Disclaimer: Based on a consolidated text of the Specific Relief Act, 1963 showing amendments up to the Specific Relief (Amendment) Act, 2018 (in force from 1 October 2018), as consulted on 2 October 2026. Later amendments, notifications under the Act and the law of limitation should be checked. This article is general information, not legal advice; check the official text before acting.