(a) The purposes of the Architectural Board of Review are to preserve and protect the public health, safety and welfare by maintaining the high character of community development and protecting the real estate within the Municipality from impairment or destruction of value by regulating, according to proper architectural principles, the design, use of materials, finished grade lines and orientation of all new buildings, signs and structures, hereafter erected, and the moving, alteration, improvement, repair, adding to or razing in full or in part of the exterior of all existing buildings.
(b) Such regulations shall take into consideration the historical and architectural nature of existing buildings, signs and structures within the Municipality and the compatibility of proposed changes or proposed new buildings, signs and structures with such existing buildings, signs and structures.
(c) The Board shall exercise such other powers and duties as may be established by ordinance of Council.