CA Gov't Code Section 65700

(a)

The provisions of this chapter shall not apply to a charter city, except to the extent that the same may be adopted by charter or ordinance of the city; except that charter cities shall adopt general plans in any case, and such plans shall be adopted by resolution of the legislative body of the city, or the planning commission if the charter so provides, and such plans shall contain the mandatory elements required by Article 5 (commencing with Section 65300) of Chapter 3 of this title.

(b)

Notwithstanding subdivision (a), the provisions of Sections 65590 and 65590.1 shall be applicable to charter cities.