A. This chapter applies to all uses and activities developed in the city excluding single-family and duplex units on individual lots.

B. When additions, alterations, or repairs of any existing building or structure exceed 50 percent of the value of the building or structure, or a residential use is converted to a nonresidential use, then such building or structure shall be considered to be a new use and site landscaping provided in accordance with this chapter; provided, that if any existing foundation or fence layout precludes full compliance herewith, then the landscaping requirements may be modified by the planning director in approved landscape plans. (Ord. 6387 § 1, 2011; Ord. 4914 § 1, 1996; Ord. 4304 § 1(33), 1988; Ord. 4229 § 2, 1987.)