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Existing Building Code

See also: Building Code

What Is It?

The Seattle Existing Building Code (SEBC) provides minimum requirements for repair, alteration, change of occupancy, addition, and relocation of existing buildings. Seattle has adopted the 2018 International Existing Building Code, with amendments specific to our city.

What It Isn't

This code does not cover the design and construction of new buildings. Those regulations are found in the Seattle Building Code. This code also does not cover regulations for single-family houses, duplexes, and townhouses with up to three stories and separate entrances. Those regulations are found in the Seattle Residential Code.

Read the Code

This is a read-only version of the 2018 Existing Building Code with errata. You can buy a full pdf version from iccsafe.org. Print copies are available for sale through the Seattle Services Portal. See our pricelist and our ordering instructions.

The 2018 Seattle Existing Building Code contains substantial copyrighted material from the 2018 International Existing Building Code which is proprietary to and copyrighted by International Code Council, Inc. The licensed material is copyrighted by the International Code Council, Inc., has been obtained and reproduced with permission. The acronym “ICC” and the ICC logo are trademarks and service marks of ICC. ALL RIGHTS RESERVED.

This is a read-only version of the 2015 Existing Building Code. You can buy a full version from iccsafe.org

The 2015 Seattle Existing Building Code contains substantial copyrighted material from the 2015 International Existing Building Code which is proprietary to and copyrighted by International Code Council, Inc. The licensed material is copyrighted by the International Code Council, Inc., has been obtained and reproduced with permission. The acronym “ICC” and the ICC logo are trademarks and service marks of ICC. ALL RIGHTS RESERVED.

Proposed Changes

We are reviewing the Seattle Codes to make changes for the 2021 Seattle Code update process, which will start in mid-2022.

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.