Did they not give you any estimated time to complete their project? Usually Builders give the estimated time and also mention compensation it not completed within time. Have a look on your documents.
Radiant Jasmine Terrace project got approval by BDA in 2008 and plan was sanctioned in 14-Jan-2011 to construct 4 units ( A,B,C,D) of 7 floors each totals 196 Flats + 3 floor amenities , children play area and Swimming Pool within 39 Months(36+3 months) but as of today (13-Feb-2017) almost 6+ years past now only C & D (98 flats) + Amenities are constructed. We are still waiting for children play area and Swimming Pool to be constructed by Radiant Developer. This project is not completed. Residents of RJT are loosing trust day by day what was promised.. Careful before buying this property..