59-G-4.11. Extension.

A nonconforming use of a building, structure or lot must not be extended in any way. However, a nonconforming use may be initiated or extended throughout those parts of a building or structure that were designed or arranged for the use if the building or structure was substantially completed before:

   (a)   June 1, 1958; or

   (b)   the effective date of the zoning text or map amendment that made it nonconforming.