Required your advice on purchasing Plot in padur chennai.

Q: Required your advice on purchasing Plot in padur chennai.
Its comes at Modern layout back side to Gateway international school.

All plots comes in 3 Grounds in size… near by many villas are coming up and even apartments…layout is layed back in 1960’s…

The dealer says it is a patta land and i can get approval later.

1.Is this true? Hw much time it will take to get approvals.
2.Per ground 45 to 50 lack they were quoting… is it right price?
3.If i can buy a Patta Land, what should i ensure for safety before i buy?
4.How to ensure no cheating.
5.I have amount to purchase 2 grounds,rest of the 1 ground I want to sell after purchaging is it possible???(As all polts comes in 3 grounds)