Notwithstanding any other provision of this Article, if the nonresidential building or structure is designated as a local historic landmark, listed in the National Register of Historic Places, or located in a locally designated historic district or in a historic district listed in the National Register of Historic Places and the City Council determines, after a public hearing, that the nonresidential building or structure is of individual significance or contributes to maintaining the character of the district, and the nonresidential building or structure has not been condemned as unsafe, the order issued by the code enforcement coordinator or officer pursuant to Sec. 11.9.11. and the ordinance approved by City Council may only require that the nonresidential building or structure be vacated and closed until it is brought into compliance with the minimum standards established by this Article.