Buying a resale flat in Wakad

Q: Hello,I am buying a resale flat in Wakad, Pune. Below are some of the points:1 Seller has directly purchased from builder 2. Society yet not formed, as 1 building still in construction 3. Because of above society not yet formed. 4 Owner got the possession 3 mnths ago I have following questions:1 Is it mendatory to give the paper notice that I am buying this property, as the society is not yet formed2 Owner has already paid the maintanance for 2 year, so if the flat got registered on my name, will that mailtainance automatically transfers to my name or i have to do something else for that.3 There are 2 owners of the flat, 1 is NRI so do we need to deduct the TDSThanks in advance.Regards,Harsh