A. In all residential districts and business districts, except in the case of planned developments, not more than one principal detached building shall be located on a zoning lot.
B. In the case of any lot or plot, substandard in area by the terms of this title, but once legally buildable and thereafter singly and separately held in fee ownership, the rights acquired or existing therein, for the use of said lot or plot as a buildable parcel, shall terminate and become nonexistent and void should the said substandard plot merge in fee with any adjoining land or property, thereby creating a parcel to conform with the area requirements of this title, or thereby enlarging a parcel already conforming with such requirements. Such merger shall be deemed to occur when the same person or persons acquire, obtain or have fee ownership in both parcels whether by purchase, sale, devise, gift or otherwise. (Ord. 89-04, 4-3-1989)