Where a lawful structure exists at the effective date of adoption or amendment of this title that could not be built under the terms of this title by reason of restrictions on area, lot coverage, height, yards, or other characteristics of the structure or its location on the lot, such structure may be so continued so long as it remains otherwise lawful, subject to the following provisions:
   A.   Enlarge Or Alter: No such structure may be enlarged or altered in a way which increases its nonconformity.
   B.   Destruction: Should such structure be destroyed by any means to an extent of more than fifty percent (50%) of its replacement cost at the time of destruction, it shall not be reconstructed except in conformity with the provisions of this title. The determination of the replacement cost must be determined by a licensed property appraiser. (Ord. 1994-92, 6-14-1994, eff. 6-14-1994)