Neither the provisions of this subchapter nor any amendment or change hereof shall be so interpreted as authorizing any use or condition theretofore existing which is unlawful under applicable provisions in effect at the time of the amendment or change if the use or condition continues to be unlawful under the provisions of this subchapter or any amendment or change hereof.
(1980 Code, § 29.1204) Penalty, see § 162.999