(a) A nonconforming building is any building which does contain a use permitted in the district in which it is located, but does not conform to district regulations for: lot area, width, or depth; front, side or rear yards; or other minimum requirements specified herein.
(b) Nothing in this chapter shall be deemed to prevent normal maintenance and repair or structural alteration, of a nonconforming building provided that in the opinion of the Zoning Administrator, such action does not increase the degree of or create new nonconformity with regards to the regulations pertaining to such buildings.