If you're thinking of purchasing a property where the seller only has a certified copy of the sale deed, it's crucial to proceed with caution. While a certified copy from the SRO is legally recognised, you must thoroughly verify all other documents like property tax receipts, EC, OC, and A-khata. It's also wise to investigate the whereabouts of the original sale deed and consider obtaining an indemnity bond from the seller against future claims or undisclosed loans. Seeking legal advice and issuing a public notice before purchase are highly recommended steps.