Development standards. Mixed-use developments are subject to site plan review (consistent with the requirements of § 25-53) and shall comply with the development standards of the underlying zone (concerning lot size and dimensions, setbacks, building height and coverage, etc.) except that residential development shall comply with density standards of the R-3 Zone (which allow a density up to one dwelling per 1,500 square feet of lot area) and also that projects may request a reduction of up to 50% in the number of parking spaces that are required for each distinct use on the site, as shown in § 25-45 (Auto and Bicycle Parking and Loading). Said request for a parking reduction shall be incorporated into the site plan review application and is not subject to a variance.