The applicant has provided evidence satisfactory to the Planning Commission at a duly advertised public meeting that the proposed addition will not have a substantial detrimental impact on the use and enjoyment of adjoining properties or the health, safety and welfare of the residents of those adjoining properties due to the design, size, location, or other physical characteristics of the proposed addition. The Planning Commission shall have the authority to approve, modify or deny the proposed addition and/or require the applicant to provide additional landscaping, screening, buffering or other design features to mitigate the impact of the proposed addition on adjoining properties. In reviewing the application for the proposed addition, the Planning Commission shall consider the nature and character of the immediate neighborhood, the recommendation of the Comprehensive Plan and the location of the lot, the existing structures thereon, the location of structures on adjoining properties and the proposed design, size, location and other physical characteristics of the proposed addition.