It is always advisable to check the related deeds from a local lawyer before buying the proeprty.
Howeevr to give a typical checklist you may refer to the list below-
1 Sale Deed, Title Deed, Mother Deed, Conveyance Deed
2 RTC Extracts
3 Katha Certificates and Extracts
4 Mutation Registration Extracts
5 Joint Development Agreement
6 Power of Attorney
7 Sanctioned Building plan
8 NOC from Electricity Dept. / Pollution Dept. / Water Works / Port Authority
9 Sale & Construction agreement between developer/Builder & 1st owner
10 Copy of Possession letter from Builder / Developer
11 Any Loans on Property verification
12 Sale Agreement with the Seller
13 All Paid Tax receipts
14 EC up to date for last 13 years
15 Demand letter from Vendor before disbursement
16 NOC from Society / Building
17 No Due Certificate
18 Approved Plan
19 Layout approval plan
20 Auction Sale confirmation letter from local authority
21 Release Deed if any
22 Completion Certificate
23 Occupancy Certificate
24 Deed of Declaration
25 Latest Electricity Bill
For plot of land; List of Documents to be verified
1 Sale Deed, Title Deed, Mother Deed, Conveyance Deed
2 RTC Extracts
3 Katha Certificates and Extracts
4 Mutation Registration Extracts
5 Joint Development Agreement
6 Power of Attorney
7 Sanctioned Building plan
8 NOC from Electricity Dept. / Pollution Dept. / Water Works / Port Authority
9 Sale & Construction agreement between developer/Builder & 1st owner
10 Copy of Possession letter from Builder / Developer
11 Any Loans on Property verification
12 Sale Agreement with the Seller
13 All Paid Tax receipts
14 EC up to date for last 13 years
15 Demand letter from Vendor before disbursement
16 NOC from Society / Building
17 No Due Certificate
18 Approved Plan
19 Layout approval plan
20 Auction Sale confirmation letter from local authority
21 Release Deed if any
22 Completion Certificate
23 Occupancy Certificate
24 Deed of Declaration
25 Latest Electricity Bill