Sharing for everyone's benefit
Most often , the common home buyer relies on the bank's due diligence to see if property is ok or not. Banks don't care that much as they know they'll mostly recover their money from the borrower -- especially from the high CIBIL ones.
I recently had a personal situation in which the builder was trying to sell me the road which belongs to the government as part of a plot. Bank also approved the property after technical visit and verification. It was me who discovered what level of fraud the builder was trying to do. Eventually the builder -- unapologetically -- just said that site engineer made a mistake. And bank in this case is HDFC. Both the project and my individual plot was approved by them.