In your case, the scrutiny of all the documents related to the property is needed to give an expert opinion. Without perusing the documents an advice is not proper .A power of attorney is an authority given by one person to another, authorising him to act on his behalf.
A general power of attorney gives wide powers to the agent to do various things on behalf of the principal, as detailed in the deed. It is not confined to any specific act relating to a specific subject. GPA gives the agent very broad powers to act on behalf of the Principal.
“Transactions of the nature of `GPA sales or `SA/GPA/WILL transfers' do not convey title and do not amount to transfer nor can they be recognised or valid mode of transfer of immovable property.
Karnataka High court has observed in "The Agricultural Produce Market ... vs M/S Shree Karthik Investments And on 6 February, 2014, that:- "If a Power of Attorney is coupled with interest, such a document is compulsorily registrable document under the Stamp Act. Merely because a clause says that the document is an irrevocable Power of Attorney, it cannot be treated as an irrevocable Power of Attorney.
Immovable property can be legally transferred only by way of a deed of conveyance which is duly stamped under the provisions of the Stamp Act applicable to the state in which such property is situated, as well as registered under the provisions of the Registration Act, 1908. Notarization of GPA is not equivalent to registration. The sale is illegal if the GPA is not registered. In your case the POA would not be valid as it is not stamped and registered. It is only in admissible in evidence stage. Transactions of the nature of GPA sales, do not convey title and do not amount to transfer nor can they be recognised or valid mode of transfer of immovable property.The courts will not treat such transactions as completed or concluded transfers or as conveyances as they neither convey title nor create any interest in an immovable property.
Registration of power of attorney is optional In India before 2009.But after the Honble Supreme Court vide its judgment rendered in case titled as Suraj Lamp and Pvt. Ltd. v/s State of Haryana and another. The nature, scope and execution are redefined.Compulsory registration is effected from December 2012 on wards. But it’s not with retrospective effect; existing properties that have been purchased from a GPA holder (before October 11, 2011) won’t be affected.But it’s not with retrospective effect; existing properties that have been purchased from a GPA holder (before October 11, 2011) won’t be affected.
So also be check the seller has absolute marketable title over the property. If you approach a bank and take purchase loan then all the documents will check by an advocate .