how do you know that a project has legal approvals from authorities

The best way is to check if the banks are funding the project. Generally, banks approve projects and start disbursement only after all the approvals are in place.

1. Ensure that the documents of Title of the property you intend to purchase are clear. A defective Title will create problems.
2. Ensure that the building has been constructed as per the sanctioned plan and deviation, if any, is in the allowed limits. It should not be in a low-lying area or in a filled-up water body.
3. Ensure that the developer has clearance certificates from the Electricity Board, Water and Sewage Board and other concerned departments.
4. Commencement Certificate and Occupancy Certificate are other important documents that are necessary while buying property. Check out the genuineness of the documents with the concerned authorities.
5. Ensure Agreement for Sale and Sale Deed, duly stamped, executed and registered are in your possession. Both should contain fair clauses for both the parties.