Lots included in approved plans. Any lot shown on a recorded subdivision plan on the effective date of this Part 1 or after the enactment of subsequent amendments thereto which does not meet the minimum size or width requirements of the zoning district in which it is located may be used for the use indicated on the subdivision plan, provided that all yard, height and open space requirements of the zoning district in which it is located shall be met. Provided that when a subdivider has had an application for approval of a preliminary or final subdivision plan approved prior to the effective date of this Part 1, no provision in this Part 1 shall be applied to affect adversely the right of the subdivider to commence and complete any aspect of the approved preliminary or final plan in accordance with the terms of such approval within five years from the date of such approval. When approval of a final plan has been preceded by approval of a preliminary plan, the five-year period shall be counted from the date of preliminary approval.

Lots held in single and separate ownership. Any lot held in single and separate ownership on the effective date of this Part 1 or after the enactment of subsequent amendments thereto which does not meet the minimum size or width requirements of the zoning district in which it is located may be used for any use permitted in that district, provided that all yard, height and open space requirements are met. Provided that if two or more lots, combination of lots and portions of lots with continuous frontage in single ownership are of record at the time of passage or amendment of this Part 1, and if all or part of the lots do not meet the requirements established for lot width and/or area, the land involved shall be considered to be an undivided parcel for the purpose of this Part 1, and no portion of said parcel shall be used or sold in a manner which diminishes compliance with lot width and/or area requirements established by this Part 1, nor shall any division of any parcel be made which creates a lot with width or area below the requirements stated in this Part 1.

A nonconforming use, building or structure may not be expanded unless such expansion has been approved as a special exception by the Zoning Hearing Board.

Nonconforming uses.

Nonconforming buildings and structures.

Nonconforming buildings and structures, and building and structures containing nonconforming uses, may be repaired and maintained, provided that no repairs or maintenance shall be made which will further extend the violation of any requirements of this Part 1.

A building or structure containing a nonconforming use or a nonconforming building or structure may be replaced by a new building or moved to another location on the same lot provided that the new or relocated building or structure complies with all coverage, yard and height requirements and general regulations applicable to the zoning district in which it is located.

Any nonconforming building or structure, or a building or structure containing a nonconforming use, of which the basic structural elements are totally destroyed by any means, may be rebuilt and used for the same nonconforming use or a nonconforming use of a more restricted classification. Any subsequent building, structure or use of the land shall not be more nonconforming in any respect than the building, structure or use of the land which was destroyed. New construction shall begin within 18 months of the date of destruction and be carried to completion without interruption.

A nonconforming building or structure, or a building or structure containing a nonconforming use, of which the basic structural elements are partially destroyed or which is partially destroyed but which has all basic structural elements remaining may be reconstructed. The reconstructed portions of a building or structure shall not be more nonconforming in any respect than the portions of the building or structure which were destroyed.