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Side Sewer



What is a Side Sewer Permit?

A side sewer permit allows a Contractor, possessing an appropriate contractor’s license, to install a sewer lateral within the public rights of way. Information concerning the City’s existing sewer system, including possible existing side sewers, in proximity of a property can be obtained from the Department of Public Works, Hydraulic Section located at 1680 Mission Street, 2nd floor, telephone 554-8339 or 554-8318. 


Who can install a side sewer?

The Contractor must have either: 

  • Class “A” license OR 

  • Class “C-36” and a Class “C-12” license OR 

  • Class “C-42” 


Permit Information and Procedure

  • All applicants must complete a Street Excavation permit for Side Sewer construction or repair

  • Pursuant to Article 2.4 of the Public Works Code, the Permittee shall file and maintain an excavation bond with a minimum amount of $25,000.00 with San Francisco Public Works. The bond is to guarantee the maintenance of the pavement in the trench and roadway area for a period of 3 years following the completion of the backfill and pavement restoration. All fees shall be paid prior to the issuance of the permit. See fee schedule

  • The Permittee shall have a certificate of liability insurance on file with BSM. (Same comment as for General Excavation Permit; i.e. their bond is their insurance) 

  • All restoration shall be performed per Article 2.4 of the Public Works Code. The Permittee shall make arrangements with the Street Improvement Section at least 10 days in advance by telephoning 554-7149, to schedule an inspection. 


Other Requirements

  • Having obtained authorization to excavate in the roadway, the contractor shall obtain the proper permits and arrange for an inspection, for the portion of pipe from the trap to the property, with the Plumbing Inspection Division of the Department of Building Inspection (DBI) at 1660 Mission Street, telephone 558-6054. 

  • The Permittee shall call Underground Service Alert (U.S.A.), telephone number 800-642-2444, 72 hours prior to any excavation. 

  • When working within the roadway, the Permittee shall conduct construction operations in accordance with the requirements of Article 11 of the Traffic Code. The Permittee shall contact the San Francisco Municipal Transportation Agency (SFMTA), 1 South Van Ness Avenue, 7th Floor, telephone (415) 701-4500, for specific restrictions prior to starting work. 

  • DPW Order 183621 - Trench Restoration Order - Rules and regulations that would be implemented in the case of a catastrophic emergency within the City and County of San Francisco. 

  • The permittee or contractor must update and maintain a record of the Side Sewer Job Card (Sample) on the job site at all times. 

    For More Information

    For more information or clarification on any of the permit requirements, please contact us at:

    San Francisco Public Works • Bureau of Street-Use & Mapping 
    1155 Market Street, 3rd Floor • San Francisco, CA 94103 • Map
    Telephone : (415) 554-5810   Fax: (415) 554-6161
    Office Hours : 7:30 a.m. - 5:00 p.m.

    Monday through Friday, except official holidays

    Note: all cash and check transactions must be submitted before 4:00 p.m.