Well builders possesion of 2 flats is unlikely to create problems if the membership is falling less than ten members
with regard to your OC Query with regard to Mumbai Municpal Corporation is as under
1. OC can be granted once the builder has properly followed the sanctioned plan or Last CC approved by BMC
Any Violation from sanctioned Plan OC will not be Granted
2. Once the Structure is Ready it is builders duty to apply for OC but nevertheless society can also go for OC
A request for Granting OC shud be made to BMC along with the actual / approved plans shud be given A BMC Sub Engineer or Asst Engineer from Bldg Proposal Dept Will Come to ur Site To verify whether the structure is made as per the sanctioned plan
Upon their Satisfaction OC can be granted If they have can query or objection that needs to be rectified shud be done as early as possible
Non consequences of not takin OC are
Ur society can be peanlised by almost 40 to 80% increase in maintainence as compared to other similar OC granted building in your viccinity
If at all water connection is given ur bill towards Water charges will also increase substantially
If there are glaring changes in structure of the building which is not as per sanctioned / approved plan BMC can Demolish that part of structure
Regards
Abhijeet