Is notarized MOU valid with sale deed upon paying stamp duty

Following is the list of documents required at the time of purchase of property:-                  

1. Sale Deed/Title deed /Mother deed/Conveyance Deed
2. RTC Extracts
3. Katha Certificate and Extracts
4. Mutation Register Extracts
5. Joint Development Agreement
6. General Power of Attorney
7. Building plan sanctioned by statutory authority
8. NOC from Electricity Deptt/Pollution Control Board/Water Works/ Air Port Authority
9. Supplementary agreement / Ratification Deed (if any)
10. Allotment Letter from the builder/co-operative society/Housing Board/BDA.
11. Sale Agreement between Builder and 1st Owner
12. Construction Agreement between Builder & 1st Owner
13. Copy of possession letter from the builder
14. Payment receipts paid towards the builder
15. If any loan on the property (Current or past)
16. Sale agreement with the Seller
17. Latest Tax Paid Receipt from the date of registration up to date (Property Tax/Municipal Tax etc)
18. EC up to date for latest 13 years or from the date of registration till date
19. Demand Letter from the vendor before disbursement
20. Own contribution receipt along with the bank statement from which you have paid your contribution to the vendor.
21. NOC from the Society/Building association.
22. No-due certificate from the building association.
23. Approved plan of construction/extension & license for construction.
24. Detailed cost estimate/valuation report from Chartered Engineer/Architect (if applicable)
25. Conversion order/betterment charges paid receipt.
26. Layout approval plan sanction
27. Auction Sale confirmation letter from Local Development Authority
28. Release deed (If applicable)
29. Completion Certificate
30. Occupancy Certificate
31. Loan/Charge/Mortgage by Builder:
32. DEED OF DECLARATION
33. Latest Electricity Bill

It is advisable to verify the same from a lawyer