It shall be unlawful to use, occupy, or permit the use or occupancy of any building, land, or premises, or part thereof hereafter created, erected, altered in its structure, or enlarged in its use, until a certificate of use, occupancy, and compliance shall have been issued therefor by the Zoning Officer, stating that the proposed use of the land, building, or premises conforms to the requirements of the grading and zoning ordinances and the building and fire codes.