When the Building Inspector is satisfied that the work, as completed, complies with the provisions of the building permit, this chapter and other applicable ordinances, he shall issue a certificate of occupancy or completion to such effect. If there are exceptions, the Building Inspector shall defer issuance of a certificate of occupancy or completion until the exceptions have been satisfied or may issue a conditional certificate containing such conditions as he may determine, which shall be subject to revocation if the exceptions are not satisfied within a period of time fixed by him.