A residence shall not be converted to accommodate an increased number of dwelling units unless:
(a) The yard dimensions still meet the yard dimensions required by the zoning regulations for new structures in that district.
(b) The lot area per dwelling equals the lot area requirements for new structures in that district.
(c) The floor area per dwelling unit is not reduced to less than that which is required for new construction in that district.
(d) The conversion is otherwise in compliance with this Zoning Code (e.g., property is zoned for two-family or multiple-family use) and all other relevant codes and ordinances.