Structures and their uses that are nonconforming may be continued as long as they otherwise remain lawful but shall not be enlarged, expanded or altered except to become more in conformity with this chapter. Any replacement of a nonconforming structure destroyed to an extent greater than fifty (50%) percent of its assessed valuation shall not be reconstructed except in conformity with this chapter. Changes from one (1) nonconforming use to another are prohibited.

A nonconforming structure, provided that the use of same is permitted in the district, may be enlarged, provided that the enlargement complies with all development regulations of the district.