Bengaluru investment: Legal due diligence kitna crucial?

My next investment property needs to be legally airtight. Bengaluru mein title verification aur builder ka legal track record check karna kitna crucial hai? Aditya Township ya Mithila Splendor jaise projects mein RERA compliance kaise ensure karein? Is just RERA registration enough, or kya extra due diligence steps hain for smooth exit options?