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Most services are available online through our Virtual Applicant Services Center. We offer limited access to our offices for scheduled public meetings.

Stormwater Codes and Rules Update - Documents

2021 Stormwater Code and Manual Updates

Summary of Changes

Stormwater Code (Seattle Municipal Code)

2021 Stormwater Manual (Joint Director's Rule SPU DWW-200/SDCI 10-2021)

New SPU Public Drainage System Requirements Director's Rule (DWW-210)

The following are archives of previous versions of the Seattle Stormwater Code and Manual and supporting documents. For the current Seattle Stormwater Code and Manual and supporting documents, see Stormwater Code.

2016 Stormwater Code and Manual

2016 Stormwater Code

2016 Stormwater Manual

2016 Forms and Documents

2009 Stormwater Code and Manual

2009 Stormwater Code

2009 Stormwater Manual

2009 Forms and Documents

2009 Reference Materials

You are on SDCI's archive site. For current projects and information, please visit our main site.

Construction and Inspections

Nathan Torgelson, Director
Address: 700 5th Ave, Suite 2000, Seattle, WA, 98104
Mailing Address: P.O. Box 34019, Seattle, WA, 98124-4019
Phone: (206) 684-8600
Phone Alt: Violation Complaint Line: (206) 615-0808
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SDCI issues land use, construction, and trade permits, conducts construction and housing-related inspections, ensures compliance with our codes, and regulates rental rules. SDCI is committed to an antiracist workplace and to addressing racism through our work in the community.