A lawful nonconforming structure existing at
the time of the adoption or amendment of this chapter may be continued
although its size or location does not conform to the lot width, lot
area, yard, height, parking and loading, and access provisions of
this chapter. However, it shall not be extended, enlarged, reconstructed,
moved or structurally altered except when required to do so by law
or order or so as to comply with the provisions of this chapter.
Once a nonconforming use or structure has been
changed to conform, it shall not revert back to a nonconforming use
or structure. Once the Board of Appeals has permitted the substitution
of a more restrictive nonconforming use for an existing nonconforming
use, the substituted use shall lose its status as a legal nonconforming
use and become subject to all the conditions required by the Board
of Appeals.
Unless otherwise provided, there shall be a
setback line of not less than that required by the appropriate district,
provided that:
A. Where 40% or more of the frontage is occupied with
buildings having an average setback line of more, or of less, than
25 feet, the setback line in any vacant interior lot in such frontage
shall be established at the point of intersection of its center line,
drawn from the front street line, and a line connecting the nearest
points on the setback lines of the next existing buildings on each
side of such vacant lot.
B. On any corner lot less than 60 feet wide and of record
at the time of the original passage of this chapter, where reversed
frontage exists, the setback on the side street shall be not less
than 50% of the setback required on the lot in the rear, and no accessory
building shall project beyond the setback line of the lot in the rear,
provided further that in no case shall the buildable width of such
corner lot be reduced to less than 24 feet.