A case can be filed in the consumer court against the builder for enforcement of the agreement and to get the parking space which was promised to you by the builder. The builder has to provide you the parking place as promised if not he should not sell or make agreement for the same. It is serious default commit by the builder and the court can compensate you also for the mental harassment and agony.

1. You can file a consumer complaint against the builder and pray before the court for relief of allotment of car parking as builder has promised same and now there is unfair trade practice and deficieny of service on part of builder.

File complaint against builder before consumer forum and seek orders to direct builder to provide you car parking slot 

2) also seek litigation costs and compensation for mental torture undergone by you 

1. I wonder why while purchasing the flat you did not purchase the parking space as well.

2. Since you did not do so and in absence of any written undertaking by the builder it would be presumed that you refused to purchase the same .

3. In that event unless any parking space is available now for sale, you can not force the builder to sell you the parking space at this time.

4. You can file case before the consumer forum but the same will not have much chance of success.

Gift the car to the builder. Haaaaaaa haaaaaaa haaaaaaa

The management of the building has to ideally be handed to the society of flat purchasers

The builder cannot retain management with him

Since he has no authority to retain management, he has no authority to allot you car park space 

You cannot even enforce your demand of being allotted the car park because car park comes under common areas which belongs to society 

You can file consumer ccmplaint against the builder and seek parking as well as compensation. As per dcr rules parking is mandatory per flat in the construction.

Parking spaces have often been a matter of prime concern for several apartment complexes. Often there are some disputes like allocation of spaces or the fee structures.

A builder has to provide a certain number of parking spaces basis the number of units of houses. As per a mandate from the Mumbai High Court, the builder is not allowed to sell parking spaces outside the FSI consumed. This has been confirmed by the Supreme Court of India too.

The RWA is the actual owner of the parking space in the apartment complex. You have to constitute one and get it registered to solve not only this parking space problem but for all other problems within the complex of the apartments.