The provisions of this chapter shall apply to all new development and to changes of use or structural additions comprising more than 20 percent of gross floor area prior to the addition, when such changes or additions require additional landscaping under the regulations of this chapter. (Ord. 2245 § 1, 2018; Ord. 2087 § 2 (Exh. B), 2012; Ord. 1904 § 1, 2003; Ord. 1815 § 1, 2000; Ord. 1629 § 1, 1996).