A. No parcel of land for a single-family dwelling unit shall be less than four thousand (4,000) square feet, nor shall any parcel of land existing in single ownership at the time of passage of this Code henceforth be divided for sale in units of less than four thousand (4,000) square feet.

B. No parcel of land for a two-family dwelling unit structure shall be less than five thousand (5,000) square feet, nor shall any parcel of land existing in single ownership at the time of passage of this Code henceforth be divided for sale as two-family dwelling unit structure site of less than five thousand (5,000) square feet.