One of my friend is buying flat in resale where a society is not formed. The Seller and Builder have undergone a registered Agreement but not a sale deed. Builder is ready to give NOC to sale the flat. The concern is, my friend wants to have a registered sale deed. In this case, is it possible to execute the sale deed directly between the Seller and Buyer (as Seller and Builder didn't execute sale deed).? IF yes then, is it necessary for the builder to be present at the time of Sale Deed?