The governing authority of each municipality and county, either independently or jointly with the governing authority of an adjacent municipality or county, or both, is hereby empowered, in its discretion, to enact ordinances providing for the creation of one or more local historic preservation commissions to advise on the establishment and location of potential historic districts and the designation of potential historic landmarks and landmark sites within the jurisdictional area of the governing authority. The governing authorities of each municipality and county, either independently or jointly with the governing authorities of an adjacent municipality, may enact ordinances for the establishment of such local historic districts, historic landmarks and landmark sites within the jurisdictional area of the governing authorities as these authorities shall choose to designate. Each such ordinance shall be adopted after investigation of the historical, architectural, archaeological and cultural significance of the buildings, structures, features, sites and surroundings of such districts, landmarks or landmark sites and after having held public hearing thereon. Notice of such public hearing, specifying the boundaries of any proposed historic district and the location of proposed historic landmarks and landmark sites shall be published once a week for at least three (3) consecutive weeks in at least one (1) newspaper published in such municipality or county. The first publication of such resolution shall be made not less than twenty-one (21) days prior to the date fixed in such resolution for the public hearing and the last publication shall be made not more than seven (7) days prior to such date. If no newspaper be published in such municipality or county, then such notice shall be given by publishing the resolution for the required time in some newspaper having a general circulation in such municipality or county.
An ordinance to establish a local historic preservation commission may precede an ordinance to designate one or more local historic districts and one or more landmarks or landmark sites. Whenever governing authorities enact such an ordinance creating a historic preservation commission before an ordinance or ordinances designating one or more local historic districts and one or more landmarks or landmark sites, the local historic preservation commission shall review such potential local historic districts or potential landmarks or landmark sites and make a recommendation to the governing authorities before such designation.