Accessory structures shall be located outside of the required front yard (front yard setback) and shall not have any portion closer than the main house to the front property line, except: (1) unenclosed, nonsolid roof gazebos, pergolas or similar structures may be located in front of the house, but not within the required front yard setback; (2) decorative landscape trellises and arbors covering no more than thirty-two (32) square feet and no more than eight feet tall may be located within the required front yard, but not within the public right-of-way; and (3) accessory structures that match or complement the design, materials, and colors of the main house on large lots (forty thousand (40,000) square feet or larger) where the accessory structure is located a minimum of fifty (50) feet behind the front property line, subject to the review and approval of the Planning Division;