1) According to the building bye-laws of BBMP, every builder should complete the construction or reconstruction of a building for which the licence was obtained. The construction should complete before the expiry of five years from the date of issue of licence.
2) Within one month after the completion of the construction the builder should intimate the Commissioner in writing about the completion. It should be accompanied by a certificate in certified by a registered architect / engineer / supervisor. Along with this, the application for permission to occupy the building should be submitted.
3) “The authority shall intimate the applicant within thirty days of receipt of the intimation whether the application for Occupancy Certificate (OC) is accepted or rejected. In case, the application is accepted, the Occupancy Certificate shall be issued in the form given in Schedule IX provided the building is in accordance with the sanctioned plan,” says the byelaw.
4) In addition, OC should be given after the physical inspection of the building by an official who has to verify if the building has been constructed as per the sanctioned plan and has met the requirement of building byelaws. This includes inspections by the Fire Service Department wherever necessary.
5) don't purchase the flat if builder does not have OC
6) if you so desire you can file RTI with BBMP as whether Oc is issued for building having 12 flats