Nothing in this title shall be deemed to prevent the strengthening or restoring to a safe condition of any nonconforming building or part thereof declared to be unsafe by order of the Building Official charged with protecting the public safety. Alterations or expansion of a nonconforming use which are required by law or a public agency in order to comply with public health or safety regulations are the only alterations or expansions allowed. [Ord. 726 § 2 (Exh. B), 2019.]