No nonconforming use or structure which shall have been discontinued
or abandoned for a period exceeding 12 months shall be resumed; provided,
however, that no such use or structure shall be resumed if the premises
upon which such use or structure existed is devoted to a conforming
use after the discontinuance or abandonment of the nonconforming use.
Nothing contained in this chapter shall prohibit the modernization
of existing nonconforming structures; provided, however, that such
modernization does not entail any extension, enlargement, intensification,
addition or change of the nonconforming use.
Any nonconforming building or structure lawfully under construction
on the effective date of this chapter, pursuant to plans filed with
the Construction Official and approved by him and all other municipal
boards and agencies as required under law, may be completed and may
be used for the nonconforming use for which it was designed, to the
same extent as if such building had been completed and been in use
on the effective date of this chapter; provided, that such building
or structure shall be completed within one year after the effective
date thereof.