In the event that there has been a delay in the housing unit being offered to you for possession, you should examine the reasons for the same. If you feel that the reasons and delay can be condoned, then you may wish to take possession. In the event you feel that the developer is deliberately delaying / has delayed a construction of the building, after a grace period, you are free to approach the Consumer Care, the Civil Court upon the severity of and delay, as well as, the reasons for the same.