California Code, Government Code - GOV § 56887.5

If any change of organization or reorganization pertains to city or district territory which is located, in whole or in part, within the boundaries of any city or county, any terms and conditions authorized by Section 56886 may be made applicable to that city or county.  However, no indebtedness or liability which is subject to the requirement of an election, under the provisions of Section 18 of Article XVI of the California Constitution, shall be incurred or assumed by any city or county, except as provided in Section 18 of Article XVI of the California Constitution.