(a) The lawful use of a building or land existing at the time of the adoption of the Zoning Ordinance may be continued although such use does not conform to the regulations of the district in which it is maintained, and an existing nonconforming use may be extended throughout a building, providing no structural alterations are made. An existing nonconforming use of a building or premises may be changed to another nonconforming use of the same or a higher classification but no building or premises in which a nonconforming use has been changed to a more restricted use shall again be devoted to the less restricted use.
(b) Any nonconforming building or structure damaged by fire, explosion, flood or act of God may be reconstructed and used as before such calamity, providing the building is not substantially destroyed. (Ord. 545-47. Passed 10-20-47.)