Any nonconforming use or structure which lawfully existed at
the time of the passage of this article may be continued, and any
legally existing nonconforming building or structure may be reconstructed
or structurally altered, but only in accordance with the requirements
of this article.
Whenever a building is nonconforming because it fails to comply
with any height, area, yard, off-street parking or requirements of
this chapter, other than use, and such building is partially destroyed,
such building may be restored to its prior condition; provided, however,
that such restoration shall not enlarge the previously existing nonconformance.
When an improved lot in a residential zone exists as a separate
isolated lot (the lot does not adjoin any land or lot of the same
owner), and which said improved lot is nonconforming due to size,
shape, area or setback, any existing residential building or structure
on the lot may be further improved, provided that:
A. The number of dwelling units shall not be increased even if such
increased number of dwelling units is allowed in the zone, unless
approved by the Zoning Board of Adjustment.
B. Any existing nonconforming setbacks from streets, side lot lines
or rear lot lines shall not be extended or made more nonconforming,
including any vertical or belowground additions of any type.
C. Any existing and proposed improvement on the nonconforming improved
lot shall not exceed the percentage of maximum building coverage,
lot coverage, and floor area ratio set forth in the Schedule of Space
Regulations located in the Appendix at the end of this chapter.
Notwithstanding any other provisions of this article, any existing
nonconforming lot in the R-43, R-25, R-15, R-10, R-6, R-5 and RAH-1
Zones not adjoining any vacant land under common ownership and which
is nonconforming due to width or area, may be improved with a new
building or structure in accordance with the use requirements of this
article, provided that the structure shall meet all other requirements
in Schedule of Space Regulations located in the Appendix at the end
of this chapter.