Architectural review. In addition to the requirements of this section and the Town subdivision regulations, during review of any site plan, the Planning Board may, at its discretion, consult with one or more persons or firms having experience in building architecture and design matters as to the appropriate design of building exterior facades, fenestrations, roof lines, lighting, massing, color and materials. In reviewing the architectural appearance of proposed buildings and landscaping, the Planning Board shall evaluate the compatibility of the proposed development with that found elsewhere in the vicinity of the project. The Board may, at its discretion, consult with one or more persons or firms having experience in landscape architecture and landscape planting as to the appropriate design of lawns and open spaces around proposed buildings and uses, and the appropriate species, size and number of plants to be installed. The architectural review authority of the Planning Board shall not be limited by the provisions of this section but shall extend to the full authority to conduct such reviews as may be conferred on the reviewing agency by the Town Law, the State Environmental Quality Review Act, and this chapter, as amended. The reasonable cost of any architectural review shall be borne by the applicant.