Nothing in this chapter shall be construed to prevent ordinary maintenance or repair of any structure within the historic district; provided such work involves no change that requires issuance of a building permit. Nothing in this chapter shall be construed to prevent the construction, reconstruction, alteration or demolition of any feature that, in the view of the proper authority acting lawfully, is required for the public safety because of an unsafe or dangerous condition. (Ord. 2017-01 (part), 2017: Ord. 2001-13 § 4 (part), 2001: prior code § 7708)