Every person in charge of a historic structure, historic site or improvement in a historic district shall maintain same or cause or permit it to be maintained in a condition consistent with the provisions of this chapter. The duties of the building inspector shall include periodic inspection at intervals provided by the common council of designated historic structures, historic sites and historic districts. These inspections may include physical entry upon the property and improvement, with permission of the owner, to ensure that interior alterations or maintenance will not jeopardize the exterior appearance or structural stability of the improvement. If an owner refuses permission for the building inspector to enter for purposes of inspection, the building inspector may obtain a warrant of entry pursuant to section 66.0119, Wisconsin statutes, and take any other reasonable measures to further enforce this chapter. (1975 Code Ch. 21 § XXXII; amd. 2009 Code)