Any use lawfully occupying a building or land which no longer conforms to the regulations of the district in which it is located due to the adoption of the zoning ordinance or a subsequent amendment thereto shall be deemed to be a nonconforming use, and may continue except as otherwise provided herein. Any lawfully existing building or structure which is wholly or partially used or designed for use contrary to the regulations of the district in which it is located, or which is by reason of its height or bulk, or with respect to the yards or parking spaces about it or in any other manner deficient with respect to such regulations, shall be deemed to be a nonconforming building, and may continue except as otherwise provided herein. (Prior gen. code § 8-62.0)