Any lot or parcel approved for the development of a commercial or industrial site plan where the overall parcel is under legal unified access and maintenance agreements may be resubdivided for the purposes of separate ownership and/or financing with zero side and rear yards and lot lines, provided a building has been approved or constructed on said site and provided the new lot meets minimum lot area requirements for the use. Frontage and access may be to a private interior road for such lots as approved by the Town Board under § 235-7.8. Said subdivision may be approved if the Planning Board is satisfied that the appropriate legal conditions and restrictions have been or can be established for said property. The approval of such subdivision shall be within the sole discretion of the Planning Board and shall not be considered an "as-of-right" subdivision.