Annexation Procedures
Form 2250


An Applicant’s Guide to Procedures

Central San provides for the collection, treatment, and disposal of sewage generated by properties located within Central San boundaries and can serve only those properties located within its boundaries.

If a property is not currently located within Central San boundaries, then that property must be annexed in order to receive service. Annexation is a legal procedure with set rules embodied in the Cortese-Knox Government Reorganization Act of 1985 (A.B. 115 – Chapter 541, Statutes of 1985).

The current policy of the Board of Directors of Central San is to recommend that property which is being annexed to Central San be annexed to a city if that property is within the Sphere of Influence of a city. Said policy appears in Resolution No. 86-170.

The procedure for annexation of property to Central San is as follows:

  1. Obtain an annexation petition from the permit counter at the Central San office or download it from the link below.
  2. Complete the petition, including proper signatures of all owners of the property to be annexed.
  3. Return the completed petition to the permit counter at the Central San office.

If you have any questions concerning the proper completion of the annexation petition, please contact Central San employees at the permit counter. The completed petition will be reviewed by Central San personnel to determine if all requirements have been met. In some circumstances, the annexation of property to Central San will require preparation of a negative declaration or an environmental impact report. If preparation of either of these documents is necessary, it is the responsibility of the property owner to provide the documents for Central San review. The completed petition will then be submitted to Central San’s Board of Directors for consideration. After the Board has approved the petition for annexation, Central San staff will submit an annexation application to the Contra Costa Local Agency Formation Commission (LAFCO) for its consideration. If LAFCO approval is received, you may then apply for sewer service.

Annexation fees recover Central San costs attributable to staff for processing annexation petitions and for the filing fees at the county and state levels. Annexation fees for major subdivisions containing 10 lots or more will be collected by Central San when the annexation petition is filed. Annexation fees for all other properties are due when the property is connected to the sewer system. Upon annexation, the property becomes subject to Central San’s bonded indebtedness, which is collected as a part of the County property tax bill. The property also becomes subject to all of the ordinances, rules, and regulations of Central San.

Download the Petition for Annexation to CCCSD