Side Sewer Code and Permitting Moved to Seattle Public Utilities

What's Happening?

As of October 1, 2025, Seattle Public Utilities is conducting all sanitary/wastewater plan review, side sewer permitting, and side sewer inspections. See SPU's Side Sewer Permits webpage for more information.

Construction and Inspections

Kye Lee, Interim 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.