Purchasing sra flat

Are you buying two flats, one from the owner and the second from the builder?  If you purchase two flats from the above two individuals, you shall get two sale documents from each person. You consult a local lawyer who will draft documents or a Document Writer. Before purchasing, obtain all necessary previous documents, including the mother document, EC and legal opinion 

Since you’re looking at a 2-year old SRA flat at Thane, you need to be very cautious. Generally, SRA flats cannot be sold, transferred or mortgaged for 10 years (from the date of allotment/possession), except with special permission of the Collector/SRA. If someone is offering you a 2-year old flat for purchase, it is likely illegal unless it has already crossed the 10-year lock-in or has government permission.
If it is only 2 years old, resale is almost certainly illegal without Collector/SRA permission.
Any sale deed registered in violation of SRA rules can be declared null and void.
You may end up losing both the money and the flat if you proceed without proper clearance.
Banks usually do not give loans for such resale flats before 10 years.