It shall be unlawful to use or permit the use of any building, structure, or premises or any part thereof hereafter created, erected, changed, converted, altered or enlarged, wholly or partly, in its use or structure, except for minor alterations involving no change in the floor area or use, until a certificate of zoning compliance shall have been issued therefor. Such certificate shall show that such building, structure or premises, or part thereof, and the proposed use thereof are in conformity with the provisions of this chapter or an order of the Zoning Hearing Board, and the Zoning Officer or his authorized agent shall attest to such conformance by his signature on such certificate. The certificate shall become null and void if no building permit has been issued (if a building permit is required) or other activity occurs within nine months from the date of approval by the Zoning Officer. Activity shall include the submission of development or building plans to the City for additional approvals. A copy of the certificate of zoning compliance shall be retained by the Zoning Officer. Under such rules and regulations as may be established by the Zoning Officer, a temporary certificate of zoning compliance may be issued for part of a building.