Limitations on continuance of nonconforming uses. Any nonconforming use which lawfully existed at the time of passage of this chapter may be continued upon the lot or in the building so occupied. However, except as required by current adopted state and local building code, no structural alterations shall be made to a building which is nonconforming because of use. No nonconforming use of building or land shall be enlarged or relocated to any other building or land or to any other portion of the lot occupied by such nonconforming use, nor shall there be any increase in the square footage of signs advertising said nonconforming use.

Abandonment of use. If any nonconforming use of a building or land ceases for 12 consecutive months or for 24 cumulative months during any three-year period, such structure and premises in combination shall be considered abandoned and shall not thereafter be used except in conformance with the regulations of the district in which it is located.

Restoration of buildings which are nonconforming because of use. If a building or structure which is nonconforming because of use is more than 50% destroyed by fire, explosion, windstorm or other act of God, said structure shall not be rebuilt unless in accordance with the use restrictions of the district in which it is located.

Continuance of nonconforming buildings and structures. A nonconforming structure, provided that the use of the same is permitted in the district, may be reconstructed, enlarged, relocated or structurally altered, provided that said enlargement, reconstruction, alteration or relocation complies with all bulk requirements of this chapter.