§ 152.180 NONCONFORMITIES UNDER PERMIT AUTHORITY.
   The regulations of this chapter shall not apply to any change in an existing structure or to any change in the use of a structure or of land for which a permit was issued prior to the effective date of this chapter or any pertinent amendment thereto provided that the work authorized by such permit is completed within a reasonable time.
(Ord. 491, passed 6-16-86)