OC has been issued before RERA cane into effect 

2) you cannot file complaint against builder before RERA 

No as rera is not retrospective in operation they can't go before it. 

Builder can sub divide the plot as tilll conveyance is executed he is the owner of land 

1. Since OC is issued for the building, Rera will not apply. The society has to file a civil suit

2. Builder cannot change CTS no. or subdivide the land without permission of society. Even the authorities to which the builder applied, ought to have issued notice to society calling for its objections against the builder's application. The society can challenge this act by filing a writ petition in High Court. But prior to that the society has to approach the higher officers under the Maharashtra Land Revenue Code to challenge the actions of the subordinate officers who allowed builder's applications

Dear Sir,

You can file a consumer complaint under the Consumer Protection Act, 1986 against the builder by consulting with a good property lawyer in India. The lawyer will evaluate the facts of your matter and file a complaint with the appropriate consumer forum.

With builders coming under the clause of being a service provider, the process of filing a consumer court complaint against them is the same as with other service providers. To file a complaint, you need to keep in mind the following steps :

• Send a well drafted Legal Notice to the builder stating your reasons of discontent
• Await for a response for the stipulated time from the other party
• On no-response, prepare a petition stating facts and evidences with the help of expert legal advice
• Approach the Consumer Court and file your petition against the builder

No, No jurisdiction of RERA. Once society formed, builder has no say. Any act of builder without society permission is trespass.

If the builder has not provided the car parking space as that ws approve in the layout plans, the society can drag the builder to the consumer forum, but remember that the consumer case cannot be filed beyond two years of the incidence of the grievance.

The cause of action for approaching the consumer forum should be within two years from the date of cause of action.

The builder could have done any manipulation before handing it over to the society but he cannot do any such changes after handing over possession to the society.

nil

You can revert with more such question in future if need be

1. No society cannot approach RERA against builder for not providing enough parking space.

2. Society can file case against builder in court. 

1. As per the information mentioned in the present query, makes it clear that OC was of prior date and society get registered thereafter.
2. Yes, the right to raise objections is always available with the aggrieved person.
3. There can be a complainant made to the RERA or to the civil court of law for the enforcement of any contract if exists.