Each permit shall expire and become null and void if the work authorized therein is not commenced within six months of the date of permit or if the work authorized by the permit is suspended or abandoned after the expiration of the initial six month period. Before the work may be recommenced a new permit shall be obtained. No permit issued in violation of this article shall operate as granting any vested right, and such permit shall be deemed to be null and void and confer no right whatsoever under it. (Ord. 8590)