I want to buy a residential plot, for that the land is not transfered to non agriculture land, but the builder assured that he has started the process for the same. He is ready to give us a sale dead for the plot on 100stamp paper plus he added 7-12-8, details of all the past owners of the land & lay out the project. May go further in this dead or any documents missing? who is eligible to sign this agreement? (on seller side)