In any district, structures and customary accessory buildings may be erected on any single lot of record at the effective date of adoption or amendment of this ordinance, notwithstanding limitations imposed by other provisions of this ordinance. This provision shall apply even though such lot fails to meet the requirements for area or width, or both, that are generally applicable in the district, provided that yard dimensions and requirements, other than those applying to area or width, or both, shall conform to the regulations for the district in which such lot is located. Variance of yard requirements shall be obtained only through action of the Zoning Hearing Board.
If two or more lots, combination of lots and portion of lots with continuous frontage in single ownership are of record at the time of passage or amendment of this ordinance, 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 ordinance, 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 ordinance, nor shall any division of any parcel be made which creates a lot width or area below the requirements stated in this ordinance.