If this Zoning Ordinance is amended and its provisions changed, and as a result, a building for which a permit has been issued no longer conforms to the provisions of this Title, such permit shall remain valid only if construction begins under the permit within sixty days of the date of passage of the amendment involved.
For the purpose of this section, construction shall be deemed to have begun only if on-site work, including prefabrication of material by a subcontractor or materialman, has been performed and there is a present intent to continue that work without delay. Merely nominal work performed for no other immediate purpose than the protection of an issued permit shall not be construed as a beginning of construction.
(Ord. 6706/67. Passed 1-3-67.)