(1) Nothing contained in this title shall require any change in the plans, construction, alteration, or designated use of a structure for which a building permit has been issued and construction work has commenced prior to the adoption of this title, except that if the building is nonconforming or is intended for a nonconforming use it shall be completed and in use within two years from the time the building permit is issued.

(2) Alterations or Extensions within Five Years. Whenever a use has become nonconforming through the adoption of this title, then the planning commission may permit as a conditional use the alteration or extension of such use in instances where the application for the conditional use is filed with the city recorder within five years from the effective date of the ordinance codified in this title, which was March 30, 1962. (Ord. 1952 § 1(4), 2006)