Except as hereinafter specified, any use, building, or structure, lawfully existing at the time of the enactment or subsequent amendment of the ordinance codified in this title, may be continued, even though such use, building, or structure does not conform with the provisions of this title for the zone in which it is located. Except as otherwise provided by law, nothing in this title shall prevent the strengthening or restoring to a safe condition of any part of any building or structure declared unsafe by proper authority. [Ord. 08-17-2021B § 2 (Exh. A)].