When u purchase a property, there is main thing property is freehold or leasehold, if property is free hold than u have registered Sale deed in ur favour from the purchaser, on that case u can get the bank loan.
If the property is lease hold, on that case u have registered the IGPA, Agreement to Sell, WILL, SPA, and Possession letter etc;, it may be dout, bank may be refuse loan on that property.
Buyer or Seller should have Address proof and Pan Card and two Witness, who have address proof I.D
All the document can be made with the help of Advocate, who deals in the Property document Registration.
for further enquiry u have contact me through email firstname.lastname@example.org