(a) Zoning permits shall be issued, refused, or commented on within ten (10) working days after the date of application. Written notice of refusal and reason thereof shall be given to the applicant.
(b) If the work described in any zoning permit has not begun within six (6) months from the date of issuance thereof, said zoning permit shall expire and be revoked by the Zoning Administrator. Written notice of such expiration and revocation shall be given to the persons affected. If the work described in any zoning permit has not been substantially completed within one (1) year of the date of issuance thereof, said zoning permit shall expire and be revoked by the Zoning Administrator, unless an extension is granted per subsection (c) below. Written notice of such expiration and revocation shall be given to the persons affected, together with notice that further work as described in the canceled zoning permit shall not proceed unless and until a new zoning permit has been obtained or extension granted.
(c) If the authorized work is suspended or abandoned for, or not completed within, a period of six (6) months after the time of commencing the work, the zoning permit shall become invalid. Two extensions may be granted for six (6) months each, if requested by the owner at least ten (10) days in advance of the expiration of the existing permit and upon the payment of a fee for each extension as provided herein.