§ 150.47  NONCONFORMING USES.
   Any lawful nonconforming use of land existing at the date of enactment of this subchapter may be continued, except that any nonconforming use or buildings may not be:
   (A)   Changed to another nonconforming use;
   (B)   Re-established after discontinuance for one year if it involves a substantial building; or after discontinuance for any period in other cases;
   (C)   Extended; or
   (D)   Rebuilt after damage exceeding 50% of its value.
(1988 Code, § 4.21-8)