This purpose of this chapter is to set forth standards and regulations
regarding nonconforming uses, structures, and lots. These standards
shall apply to all nonconforming uses, structures and lots, as defined
by this chapter. Nothing contained herein shall require any change
in the overall layout, plans, construction, size or designated use
of any development, building, structure or part thereof for which
official approval and required permits have been granted prior to
the effective date of this chapter or any amendment thereto.