(A)   Non-conforming use of land. The non-conforming use of land where no building is involved existing at the time of the passage of this chapter may be continued for a period of two years therefrom; provided that, no such non-conforming use of land shall in any way be expanded or extended is then on the same or adjoining property; and that, if such non- conforming use of land or any portion thereof is discontinued or changed, any future use of such land shall be in conformity with regulations of the district in which it lies.
   (B)   Non-conforming use of buildings.
      (1)   Except as otherwise provided in this chapter, the time this chapter becomes effective may be continued, and the use of a non-conforming building may be changed to another use of the same or more restricted classification, it shall not thereafter be changed back to a use of a less restricted classifications. A non-conforming building which is or may hereafter become vacant and which remain unoccupied or its non-conforming use discarded for a continuous period of one year shall not thereafter be occupied, except by a use which conforms to regulations of the district in which it is located. A non-conforming building may be maintained or kept in good repair, except as otherwise provided in this section.
      (2)   No existing non-conforming building may be enlarged, extended, reconstructed or altered unless its use is changed to a use permitted in the district in which such building is located, except in the event such enlargement, extension, reconstruction or alteration is required by court decision, law or ordinance.
      (3)   A non-conforming building which is damaged by fire, explosion, flood, wind, earthquake or other calamity or act of God or the public enemy to the extent of 50% or more of its reasonable value may not be restored, except in conformity with the regulations of the district in which it is located.
(2012 Code, § 93-6)