Cani buy a property from gpa holder withsign of actual owner

forgot to mentioned that Do i also required to get signatures from actual owner X childrens and GPA holder Y childrens at the time of registration, please respond me ASAP.

Dear Ramesh,

it is advised to get the signature of the owner of the property instead of GPA holder as the GPA had been executed 15 years ago.  You may get the signature of the GPA holder as a attesting witness in the sale deed.  It is also advised to insist and get the original GPA executed by the land owner along with other parent documents at the time of registration.  If you have not received the GPA there is chance of multiple transaction effected by GPA holder with that GPA.  The sale consideration of the property to be paid to the land owner only in the presence of the GPA holder to avoid any dispute and for smooth conclusion of the transaction. 

yes it is right to take the original GPA to avoid future complications 

it is better to take original owner signature and GPA as witness and relevant documents before excuting the process