(1) No person shall carry out any exterior alteration, addition, restoration, reconstruction, demolition, removal of exterior architectural elements, construction that alters the architectural style of existing structures, new construction, or moving of a site, structure, or building that is a designated historic site or that is within a historic district without an approved COA. Furthermore, no changes in appearance of such property or structure including, but not limited to, its light fixtures, signs, awnings, windows, siding, roof, doors, shutters, sidewalks, latticework, decorative trim, fences, walls, retaining walls, steps, soffits, paving, or other exterior elements which affect the appearance and cohesiveness of the historic site or historic district, without first obtaining an approved COA in accordance with this section.