Please note it is not safe to advise on clarity of title until and unless I manage to check all the documents related to the plot.
So take help of a legal professional and get the document checked by him.
If there is any doubt you can take help pf another lawyer.
Do cause searches from local registration office.
The following documents are essential to check the title-
1) Land titles/ construction permits/ Approvals from authorities :
2) Agreement :
3) Title clearance certificate :
4) Income Tax clearance (37-I and 230 A):
5) Stamp duty and registration:
6) Society clearance and membership:
7) Taking possession of the flat: