No building or structure existing on or before January 15, 1964, which building or structure is nonconforming either in use, design, or arrangement, shall be enlarged, extended, reconstructed, or structurally altered unless such enlargement, extensions, reconstruction, or alteration is in compliance with the provisions of this chapter for the district where such building or structure may be maintained or repaired, or portions thereof replaced, and such maintenance, repairs, or replacements do not exceed 25% of the appraised valuation of such building or structure.
A nonconforming building destroyed to the extent of more than 50% of its reasonable value at the time of its destruction by fire, explosion, or other casualty or act of God may be restored and used only in compliance with the provisions of this chapter for the district wherein such nonconforming building is located.
(§§ 6.03 and 6.04, Ord. 342, as amended by § 1, Ord. 787, eff. November 19, 1988, § 1, Ord. 905, eff. September 20, 1996, and § 186, Ord. 1095, eff. November 20, 2010)