No such occupancy, use, or change in use shall take place until a certificate of occupancy has been issued by the Zoning Administrator. Such certificate shall certify that the building or the proposed use, or the use of the land, complies with the provisions of this chapter. Upon application of the owner or an authorized agent, the Zoning Administrator shall issue the certificate of zoning compliance for any building, structure or lot; provided, that the Administrator finds such building, structure or lot is in conformity with all applicable provisions of this chapter, and all other applicable City laws.