1.What was the term and condition in connection with maintenance of the flats mentioned in he agreement of sale signed by he buyers?
2. Takeover the maintenance of the complex asking the builder to collect the dues directly from the owners,
3. After you takeover the flats, call for AGM and fix maintenance amount and interest to be charged for late payment and also inform all the members,
4. Your Society can file a recovery suit against the defaulting owners,
5. When those defaulting owners approach you for NOC for seling or letting outb their flats, collect he dues as a precondition for issuing NOC,
6. Most of he Societies even charge heavy amount in he from of donations to the tune of 10% of sale value before issuing those NOCs.