(A) In any district in which single-family dwellings are permitted, notwithstanding limitations imposed by other provisions of this ordinance, a single-family dwelling and customary accessory building may be erected on any single lot of record at the effective date of adoption or amendment of this ordinance. This provision shall apply even though the lots fail to meet the requirements for area or width, or both, that are generally applicable in the district; provided that yard dimensions and other requirements, not involving area or width or both, of the lot shall conform to the regulations for the district in which the lot is located.
(B) If 2 or more lots or combinations of lots and portions 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 for lot width and area as established by this ordinance, the lands involved shall be considered to be an undivided parcel for the purposes of this ordinance, and no portion of that parcel shall be used or occupied which does not meet lot width and area requirements established by this ordinance, nor shall any division of the parcel be made which leaves remaining any lot width or area below the requirements stated in this ordinance.
(C) Administrative clarification of 1-29-1987: The extension of any established nonconforming setback building line (foundation wall/parking lot edge), does not violate the intent of this provision, which results in the addition of structure or parking lot square footage.