The legislative body of each local jurisdiction, by local law, may regulate: the construction, reconstruction, alteration, moving, and demolition of sites or structures of historical, archaeological, or architectural significance; the construction, reconstruction, alteration, moving, and demolition of sites and structures within districts; and the appurtenances and environmental settings of sites and structures within the limits of the local jurisdiction. The purpose of a local law adopted under this section is to: safeguard the heritage of the local jurisdiction by preserving sites, structures, or districts that reflect elements of cultural, social, economic, political, archaeological, or architectural history; stabilize and improve the property values of those sites, structures, or districts; foster civic beauty; strengthen the local economy; and promote the preservation and appreciation of those sites, structures, and districts for the education and welfare of the residents of each local jurisdiction.