(a) An approved plot plan or site plan is valid for a period of eighteen months from its effective date. A minor use permit, development plan or variance is valid for twenty-four months after its effective date. At the end of such time period, the land use permit shall expire and become void unless:
(1) Substantial site work toward establishing the authorized use has been performed (Section 23.02.042); or
(2) The project is completed (Section 23.02.044); or
(3) An extension has been granted (Section 23.02.050).
(b) If a minor use permit or development plan has been appealed to but approved by the coastal commission, the time limits established by this section shall commence after final action by the coastal commission. Nothing in this title shall be construed as affecting any time limits established by Title 19 of the county code regarding work authorized by a building permit or other construction permit issued pursuant to Title 19, or time limits relating to the expiration of such permit. (Ord. 2344 § 1 (Exh. A) (part), 1988)