Delay in possession

Afdter duly giving  a legal notice to the builder you file a suit fo r possession+ interest + damages from the builder  as there i s undue delay in handing over delivery since the title passed  to you from builder/seller through registered sale deed. The builder has to deliver possession forthwith  as there is undue delay.  You can file a case in consumer forumalso as there is deficit in service by  the builder in  handing over possession  to you without much delay or on  agreed time.You'd get the required relief.

In recent judgement by a consumer commission forum 

Compensation Paid: The Commission directed the Builder to complete the construction and hand over possession before 31.01.2017, failing which, they were to pay compensation in the form of simple interest @ 10% per annum from the committed date of possession till the date possession is offered to the apartment owner. Accordingly the Commission ordered the Builder to pay to the Complainant, compensation to the same effect as mentioned in the Apartment Buyers Agreement. The Builder was also required to pay Rs. 10,000/- as cost of litigation to the Complainant.

File complaint with the consumer forum.

You can also demand your paid amount with compensesation.