“Historic structure” means any structure that is:
A. Listed individually in the National Register of Historic Places (a listing maintained by the Department of Interior), or preliminarily determined by the Secretary of the Interior as meeting the requirements for individual listing on the National Register;
B. Certified or preliminarily determined by the Secretary of the Interior as contributing to the historical significance of a registered historic district, or a district preliminarily determined by the Secretary to qualify as a registered historic district;
C. Individually listed on a state inventory of historic places in states with historic preservation programs which have been approved by the Secretary of Interior; or
D. Individually listed on a local inventory of historic places in communities with historic preservation programs that have been certified by an approved state program as determined by the Secretary of the Interior.
(Ord. 1397.15.22 § 1 (part), 2019; Ord. 1397.15.21 § 1 (part), 2007)