Grandfathering of lots to be used for the construction of one-family detached dwellings. Any lot in existence prior to September 4, 2018, which did not adjoin another lot in common ownership and does not presently adjoin a lot in common ownership, and whose lot area, lot width, lot depth are less than the minimum lot requirements for the district in which it is located, may be considered as complying with the minimum lot area requirements, and no variance shall be required, provided that:
(a) Such lot has a minimum lot area of 7,500 square feet and a minimum lot width of 50 feet.
(b) A one-family detached dwelling constructed on a preexisting undersized lot in conformity with the provisions of this section shall conform with all yard, FAR, coverage and height requirements of the district with a minimum lot area requirement in which the lot would conform in descending order from the largest to smallest lot area. For example, a preexisting 20,000 square foot lot in the R-40 district shall conform to the R-15 zoning district bulk requirements.
(c) The lot shall be used only for the construction of a one-family detached dwelling, and said use shall be a permitted use in the district in which said lot is located.
(d) These grandfathering provisions do not apply to any other use.