Any lawful building, structure or use of premises existing at
the time of enactment of this chapter, or any subsequent amendment
thereof applying to such building, structure or use of premises, may
be continued although such building, structure or use of premises
does not conform to the provisions thereof.
No nonconforming use shall be extended to displace a conforming
use.
A building or structure or portion thereof of nonconforming
use declared unsafe by a proper authority may be repaired or restored
to a safe condition. An unsafe building may be replaced, provided
that the new building does not exceed the original building's dimensions.
A nonconforming use of a building, structure or land may be
changed to another nonconforming use more nearly conforming to the
requirements of the district in which it is situated.
Any building or structure for which construction was begun prior
to the effective date of this chapter, or any subsequent amendment
thereof applying, may be completed and used in accordance with the
plans and specifications for that building or structure.
Alterations to any building or part thereof which is used to house a nonconforming use shall be made only on a permit issued by the Board of Appeals subject to the condition and safeguards set forth in §
190-44 of this article. A nonconforming building may be altered only if such alterations shall conform with the regulations contained in this chapter.
Where a district boundary line divides a lot in single or joint
ownership of record at the time such line is adopted, the regulations
for the less restricted portion of such lot shall extend no more than
30 feet into the more restricted portion, provided that the lot has
frontage on a street in the less restricted district.
Only on a permit by the Board of Appeals shall a building used
to house a nonconforming use be restored if damaged or destroyed by
fire, flood, earthquake, act of God or act of public enemy. Substantial
restoration shall be made within six months, but this time limit may
be extended by such Board in case of practical difficulty or hardship.
When a nonconforming use has been abandoned, it shall not thereafter
be reestablished.
Whenever the boundaries of a district shall be changed so that, under the regulations that apply in the changed area, a conforming use shall become a nonconforming use, the foregoing provisions of §
190-43 above shall apply to such nonconforming use.