Cal. Gov. Code § 23264
The commission shall adopt a resolution making its determinations and transmit its report in writing within 180 days of the date of notice and acceptance of appointment of the last appointed member of the commission, to the board of supervisors of both affected counties and shall be signed and attested to by all five members of the commission.
The determinations of the commission shall become the terms and conditions for boundary change and as such shall be final and binding on both affected counties should the proposed boundary change be legally effected as provided in this article.
At any time not later than 30 days after receipt of the commission's report, if the territory proposed to be transferred is inhabited or if it is uninhabited and there is no majority protest, the board of supervisors of both affected counties shall adopt a resolution approving or disapproving the proposed boundary change.
Ca. Gov. Code § 23264