Upon completion of the erection, location or alteration of any building or portion thereof for which a zoning permit shall have been issued by the Zoning Officer, but prior to the use or occupancy of such building or alteration, the holder of the permit shall notify the Zoning Officer of such completion, whereupon the Zoning Officer shall inspect the premises and, upon ascertain that the erection, location or alteration referred to in the zoning permit has been done in conformity with said permit or order of the Board of Adjustment, shall issue a certificate in writing, to be designated "certificate of conformity," that said work has been inspected by him and approved as being in conformity with all zoning requirements of the Township. Such certificate of conformity may be endorsed by the Zoning Officer upon the original zoning permit. No person shall use or occupy any building hereafter erected or located on any lot, or use or occupy any alteration of any building hereafter made, unless and until a certificate of conformity shall have been duly issued as required by this chapter.