The unregistered relinquishment deed is not a valid deed in law and can't be contested in court. As far as any transaction to immovable property shall be valid only when the deed executed, is registered by properly paying stamp duty and the registration charges.

Can relinquishment deed be challenged?

In case of a relinquishment deed, it can be challenged based on the same grounds used for revoking a general contract. It can be Fraud, Undue Influence, Coercion and Misrepresentation. It is also important that both the parties give their consent to the cancellation.

Can I sell property with relinquishment deed?

Answers (1) You will have to obtain a legal heir certificate from the office of tehsildar, after that you will have to transfer the said flat in your name only after that along with the said relinquishment deed you can sell the said flat.