The legislative body of the public agency proposed to be annexed shall agree in writing with the board upon the terms and conditions of annexation, which agreement (among other things) may provide for any of the terms and conditions authorized by the District Reorganization Act of 1965 (commencing at Section 56000, Government Code). The corporate boundaries of the public agency to be annexed need not be coterminous with any election precincts.
Ca. Pub. Util. Code § 13802