(a) Except as provided in this section, the minimum area for a development plan within the Route 231 district is two (2) acres.

(b) If a parcel of land is located both inside and outside of the Route 231 district, a development plan shall be submitted to the Plan Commission for the entire parcel. Wherever there exists a conflict between the requirements of the underlying zoning and those of the Route 231 district, the requirements for the Route 231 district shall govern and prevail.

(c) If a parcel of land or subdivision lot was recorded prior to the effective date of the ordinance from which this chapter derives, and the parcel or lot does not contain the minimum area required by this section, the undersized parcel or lot ("undersized lot") may be used for any use permitted in the Route 231 district provided that: