1. After coming into force of RERA, the builder is required to upload all the approvals and permissions obtained by him from competent authorities on rera website. So check if all approvals are in place like commencement certificate, intimation of disapproval, sanctioned plans, noc from fire authority, noc of green or forest tribunal, noc from aviation authority, noc from landowner like CIDCO, lease deed or conveyance deed or development agreement in builder's favour, title certificate issued by advocate, NA permission if any, etc
2. It's important to check that builder has proper title to the land on which he is making construction
3. Check the carpet area details of your flat, services amenities and facilities, consideration clause and mode of payment, date of handover of possession, defect liability clause, etc
4. If you are buying separate car park then check if the car park reflects in sanctioned plans. Check what type of car park you are buying, whether stilt or garage. Open car parks are common amenities and not saleable as such.
5. Also check what all is included in carpet area of your flat. There is some confusion whether balcony area should be included in carpet area or not. Rera says it is to be excluded whereas DC rules include the balcony in carpet area. So clarify that from builder
6. Check the sanctioned plans and locate the refuge floor. If you have booked a flat on higher floor then check if noc of aviation authority is in place for building height restrictions
7. Check if your agreement is as per rera model format. Many dishonest builders do not follow rera format.