1. First of all check the construction plan which was sanctioned to ensure that the car parking has been sanctioned by the authority.
2. After that examine the development agreement to ensure that all the car parking spaces are not included with the individual shops/offices or residential accommodations of the said building.
3. In case it is found that there are car parking spaces not attached/sold to any shop/flat, you can go for it.
4. You should proceed to buy the additional car parking space if all the units have not yet been sold and there is no association formed yet whom the builder has handed over charge of the entire premises.
5. If there has been an association already formed and some shops/units or car parking spaces have not yet been sold, you can buy the same only after taking NOC from the association to avoid any future problem.
6. It is important to see that the builder does not sell you car parking space from the common area but sells car parking space exclusively constructed for parking cars as per the sanctioned plan.