Here are the tips for the Legal Process of Buying a flat: 1. Verification of the title, 2. Verification of seller’s identity, 3. Documents related to land use, 4. Approvals of construction, 5. Occupancy certificate, 6. Payment of taxes, 7. Mortgages and other claims, 8. Physical survey and access to the property, 9. No Objection Certificates, 9. Compliance under RERA.