(A) Minimum street frontage. No lot shall be created after the adoption of this chapter, unless it abuts at least 40 feet on a public street, except when the lot is in a PUD or PR zoning district and then the frontage shall be as approved in the development plan.
(B) Lot of record. In any Residential District on a lot of record at the time of enactment of this chapter, a single-family dwelling may be established regardless of the size of the lot; provided all other requirements of this chapter are complied with. However, where two or more vacant and contiguous substandard recorded lots are held in common ownership, they shall be combined and shall thereafter be maintained in common ownership and shall be so joined and developed for the purpose of forming an effective and conforming lot. For the purposes of this section, the razing of a building on a substandard lot shall constitute the formation of a vacant lot.
(C) Number of buildings on a lot. Except in the case of planned developments, not more than one single-family detached residential building shall be located on a lot, nor shall a principle detached single-family residential building be located on the same lot with any other principle building.
(D) Lots unserved by sewer. In any residential district where public sanitary sewer is not reasonably available, one single-family detached dwelling may be constructed; provided the otherwise specified lot area and width requirements shall be a minimum of 30,000 square feet, and 100 feet respectively.