Cal. Government Code § 53339

Territory may be annexed to an existing community facilities district as provided in this article. The annexed territory need not be contiguous to territory included in the existing community facilities district. The territory proposed to be annexed to the community facilities district may be territory located outside the territorial limits of the agency that formed the community facilities district provided that the territory to be annexed to the community facilities district will be annexed to the respective agency prior to, or concurrently with, the annexation of the subject territory to the community facilities district and, if the annexation of the subject territory to the respective agency is not completed, the subject territory shall not be annexed to the community facilities district. The legislative body of the agency that created the community facilities district shall not adopt a resolution of intention pursuant to Section 53339.2 if the territory proposed to be annexed includes territory that is outside the territorial limits of that agency unless an initial action, petition, or filing for the annexation of that territory to the respective agency has been adopted or filed, as appropriate.