1. Check if the landowner who is selling you the flat, has a registered allotment agreement executed by builder in his name
2. Did the daughters consent to the allotment of flat by builder to the grandmother?
3. Is there any allotment procedure mentioned in JDA? Meaning which owner will get which flat?
4. Are the owners all entitled to the land? What is title history?
5. Did the land originally belong to some family member who is now deceased?