Mixed-use buildings not providing the required arrangement of residential flats, apartments, condominiums or lofts on upper floors only, or buildings not providing the minimum requirement of 75% of all residential units in any single building to be one-bedroom units, studio-apartments or one-bedroom plus den units, or wherein greater than 25% of the number of units shall be proposed to be two-bedroom units. Uses in this subsection shall be subject to all parking, loading, lighting, landscaping and design criteria listed in this chapter, which shall be conditional use criteria. All such buildings shall also be subject to the additional, special recycling and buffer requirements of the Apartment Residential and/or Townhouse Residential Zone, and said regulations shall not be considered conditional use criteria, but rather standard design controls subject to bulk/design relief from the Planning Board. Site plan review and approval shall be required. Any building proposing three or more bedrooms in any unit shall not be considered part of this category of uses and shall be considered a nonpermitted use.