The Zoning Administrator may request a review by the Planning Commission of any dwelling unit with respect to this section. The Zoning Administrator or Planning Commission shall not seek to discourage architectural variation, but seek to promote the reasonable compatibility of the character of dwelling units, thereby protecting the economic welfare and property value of surrounding residential uses and the community at large. In reviewing any such proposed dwelling unit, the Zoning Administrator may require the applicant to furnish such plans, elevations and similar documentation as he/she deems necessary to permit a complete review and evaluation of the proposal. When comparing the proposed dwelling unit to similar types of dwelling unit, consideration shall be given to comparable types of homes within 300 feet. Should the area within 300 feet not contain any such homes, then the nearest 20 dwellings shall be considered for comparison purposes.