Due to recent interim regulations implementing state legislation (effective July 2025) and pending changes to the Design Review program and the local codes implementing State Environmental Policy Act (SEPA) requirements, SDCI's Tips, Director's Rules, and other guidance documents may not reflect the most current regulations or requirements. To ensure accuracy and applicability to specific code questions or permit applications, please contact us through our Send Us a Question website.

Tips

Summary: This Tip provides information on how to get a side sewer permit for any work on side sewers and service drains. It includes information on when you need to get a permit, the types of available permits, and when you need to hire a Registered Side Sewer Contractor. It also includes some information on criteria for using Seattle’s system if you are outside of the city limits.

Date Revised: 08/11/2025

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