The 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 with the lot width,
lot area, yard, height, parking and loading, and access provisions
of this chapter. An owner of an existing nonconforming structure will
be allowed to extend, enlarge, reconstruct, move or structurally alter
the building, so long as the new construction does not increase the
extent of the nonconformity of the structure in any respect and does
not create any new nonconformity. The owner of a nonconforming structure
shall submit site and elevation plans to the Architectural Review
Board for approval, along with a land survey in cases where the lot
lines are questionable (to be determined by the City).
Once a nonconforming use or structure has been
changed to conform, it shall not revert back to a nonconforming use
or structure. Once the Zoning 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 Zoning
Board of Appeals.