Possession of resale flat

Have you consulted a lawyer and taken his opinion about the property and its title?, if his opinion is positive, you may wait for the vendor to handover possession after 15 days.

Thank you very much for prompt reply but my fear is because since giving token amount and after payment of margin money the seller has changed his attitude and his giving possession to me is dependand on he getting possession from builder for his big flat? Secondly my worry is because he has defaulted in his payment to builder Thirdly He initially said 15 days and before giving cheque for final payment * Now he wants one months time? If I give him time and final payment * Is there any way I can force him to give possession ? In other words * I do not want to be at his mercy later on ? Because my Trust in him is now a Big Question Mark ?