A structure, lawfully existing at the effective date of the adoption or amendment of this title, but which would be prohibited by the terms of this title by reason of restrictions on floor area, height, yards, its location on the lot, or other requirements concerning the structure shall be deemed nonconforming and may continue, subject to the following provisions:
A. Enlarging Or Altering: No such nonconforming structure may be enlarged or altered in a manner which increases its nonconformity, but any structure may be altered to decrease its nonconformity.
B. Damage Or Destruction:
1. Should such structure be damaged or partially destroyed by any means to the extent of more than ten percent (10%) but less than fifty percent (50%) of its replacement cost at time of damage, the restoration as a nonconforming structure shall be subject to the board of adjustment's finding, after adherence to the procedural requirements for a special exception, that its restoration to a conforming structure cannot reasonably be made in view of the nature and extent of the nonconformity and the nature and extent of the damages.
2. Should such structure be damaged or destroyed by any means to the extent of more than fifty percent (50%) of its replacement cost, at the time of damage, no repairs or reconstruction shall be made unless every portion of such structure is made to conform in every respect to the provisions of the district in which located. (Ord., 3-8-1971)