Nothing in this Part shall be construed to prevent the ordinary maintenance or repair of any exterior architectural feature in a historic district or of a landmark that does not involve a change in design, material, or appearance thereof, nor to prevent the construction, reconstruction, alteration, restoration, moving, or demolition of any such feature which the building inspector or similar official shall certify is required by the public safety because of an unsafe or dangerous condition. Nothing in this Part shall be construed to prevent a property owner from making any use of his or her property that is not prohibited by other law. Nothing in this Part shall be construed to prevent the maintenance or, in the event of an emergency, the immediate restoration of any existing above-ground utility structure without approval by the preservation commission. (2019-111, s. 2.4; 2020-3, s. 4.33(a); 2020-25, s. 51(a), (b), (d).)