This discussion explores the possibility of legalising building documents for a 1992 Grampanchayat-approved construction in Kalwa, Thane. The building has 18 flats, with only 6 having registered sale agreements, while the rest rely on notary agreements. The owner seeks guidance on society registration and deemed conveyance to avoid future redevelopment obstacles. Advice suggests society registration might be possible with a resolution for allotment based on existing agreements, but forming a society with only notary documents for a majority of flats is problematic as it's not a legally recognised property title. An amnesty scheme from the government might offer a solution to confirm property rights.