Each newly created residential building lot shall have a contiguous developable land area of at least 20,000 square feet which shall not include within it any surface or stormwater management facility which must be appropriately situate for the location and construction of a detached single-family dwelling and accessory structures. However, the septic system or potable well water serving the lot need not be located within the contiguous developable land area but may not be located closer than 50 feet to any boundary line.

No lot, yard, parking area or other space shall be so reduced in area or dimension as to make such area or dimension less than the minimum required under this section. If already less than the minimum required under this section, such area or dimension shall not be further reduced.

Whenever provision for additional street width is sought and obtained by the Township of Frankford, County of Sussex or State of New Jersey for present or future road improvement by purchase, donation, dedication, condemnation or other legal means, the required minimum lot area of an existing lot shall be reduced by the same area to be conveyed to the Township, County or State.