Material change in appearance definition

Material change in appearance means a change that will affect only the exterior architectural features of a historic property or of any structure, site, or work of art within a historic district and may include any one or more of the following:
Material change in appearance means a change that will affect either the exterior architectural or environmental features of a historic property or any building, structure, site, object, landscape feature within a historic district, such as:
Material change in appearance means a change that will affect the exterior architectural features of a historic property; or of any structure, site, or work of art within a historic district that can be seen from a street, sidewalk or area of public gathering; and may include any one or more of the following but shall not include exterior paint or paint color alterations: