(A)   Where a lawful structure exists at the effective date of adoption of this chapter, that could not be built under the terms of this chapter by reason of restrictions of area, height, yards, its location on the lot or other requirements concerning the structure, such structure may be continued so long as it remains otherwise lawful.
   (B)   No such non-conforming structure may be enlarged or altered in a way which increases its non- conformity, but any structure or portion thereof may be altered to decrease its non-conformity.
   (C)   Should such non-conforming structure or nonconforming portion of a structure be involuntarily damaged or destroyed by fire, explosion, windstorm or other similar cause, to an extent of more than 75% of its replacement cost at the time of destruction, it shall not be reconstructed, except in conformity with the provisions of this chapter.
(Ord. 9-80, passed 12-15-1980)