A nonconforming use may not be expanded in any manner, nor may any structure be erected or expanded, unless the use of the land and the structure are made to conform to the regulations of the district in which they are located. For a nonconforming use or structure in a Commercial, Industrial, or TOD District, the Zoning Board may authorize by variance an expansion of the gross floor area of the use or structure by up to 25% of that which lawfully existed as of June 5, 2017. Ord. 16-581 Ord. 18-171