For anyone buying open land: before you even visit, look up the survey number on Bhu Bharati (it replaced Dharani). Check:
- the owner's name matches the seller
- the extent matches what is being sold
- the land type (patta, assigned, government, etc.)
- whether there is any prohibition on the record
Then compare the parcel's shape with the state's cadastral map, which BuyBloc shows as a sketch. It is not a legal boundary, so get a licensed surveyor to mark the plot on the ground before you pay.