(a) Where the Village Board has approved or conditionally approved an application for a conditional use permit, such approval shall become null and void within eighteen (18) months of the date of the approval unless the Village Board has specified a different timeline in its approval or the use is commenced, construction is underway or the current owner possesses a valid building permit under which construction is commenced within six (6) months of the date of issuance and which shall not be renewed unless construction has commenced and is being diligently prosecuted. Approximately thirty (30) days prior to the automatic revocation of such permit, the Zoning Administrator shall notify the holder by certified mail of such revocation.
(b) A conditional use permit shall remain in effect as long as the conditions upon which the permit was issued are followed, and the Village may impose conditions such as, but not limited to, permit duration, transfer or renewal, in addition to any other conditions specified in granting the conditional use permit.
(c) The Village Board may extend such permit for a period of ninety (90) days for justifiable cause if the conditional use permit included a permit duration condition, if application is made to the Village Board at least thirty (30) days before the expiration of said permit.