(a) A county and all cities within it may consolidate as a charter city and county as provided by statute.
(b) A charter city and county is a charter city and a charter county. Its charter city powers supersede conflicting charter county powers.
Cal. Const. art. XI, § 6, under LOCAL GOVERNMENT.
Cal. Const. art. XI, § 6
Section 6
(a) A county and all cities within it may consolidate as a charter city and county as provided by statute.
(b) A charter city and county is a charter city and a charter county. Its charter city powers supersede conflicting charter county powers.