Upon completion of Construction, the Builder receives this Certificate from the Municipal Authorities. The Certificate documents the location and land identification of the Building, certifies if the Building is in accordance with Building Standards, e.g., Distance from Road, Distance from Adjacent Buildings, Height of the Building, and other approved norms of the Municipal authority as well as the Building Plan.
Here is how a Completion Certificate looks like:
A Permission to Occupy a Building, given by the Municipal Authorities, after verification of all supporting Documents, adherence to Building standards, Fire Safety standards for HighRises, Elevator and other Electrical Safety, provision for Water Supply and Disposal, etc. The legal possession of the Flat by the Owner is valid only with the Occupancy Certificate.
Here is how a Occupancy Certificate of an Apartment Complex looks like: