What Are the Documents to Be Verified Before Buying a Plot in India

What Are the Documents to Be Verified Before Buying a Plot in India:

1 . Register sale deed
2. Channel documents
3. Encumbrance certificate
4. Occupation certificate ( flat)
5. Allotment letter ( flat)
6. Tax receipt ( flat)
7. Car allotment letter (flat)
8. No objection certificate
9. Mutation letter
10. Conversion certificate