2021 Seattle Code Adoption - Project Documents
The 2021 Washington state codes will be mandatory on March 15, 2024. The effective date for the 2021 Seattle codes is no sooner than July 1, 2024. Applicants may use the 2021 Washington codes with the draft Seattle amendments before March 15, 2024, when accompanied by a code modification request. Between March 15, 2024, and the Seattle code effective date, applicants may use either the 2018 or 2021 Seattle codes without a code modification request. Please visit the 2021 Seattle Code Adoption webpage for updates.
Project Documents
Below are the proposed changes to the 2021 Seattle Construction Codes. These documents only include code sections that are currently amended or proposed to be amended by the City of Seattle or the state of Washington. To view the unamended portions of a particular code, please visit the International Code Council's website for the free online versions of the codes.
To view the 2021 Energy Code sections not shown in the 2021 Energy Code document below, please see the 2021 Washington State Energy Code.
- 2021 Draft Seattle Building Code
- 2021 Draft Elevator Code
- 2021 Draft Seattle Energy Code
- 2021 Seattle Energy Code Fossil Fuel Compliance Path Presentation
- 2021 Draft Seattle Existing Building Code
- 2021 Draft Seattle Fire Code
- 2021 Draft Seattle Fuel Gas Code
- 2021 Draft Seattle Mechanical Code
- 2021 Draft Seattle Plumbing Code
- 2021 Draft Seattle Residential Code
- 2021 Draft Seattle Wildland-Urban Interface Code
- 2023 Draft Seattle Electrical Code Amendments
- 2024 Draft Seattle Boiler and Pressure Vessel Code
Understanding markings within the proposed code change documents:
A new change has underlined text or struck out text accompanied by a vertical change bar to the left or right of the text.
Example:
[S] 703.2.3 Approved alternate method. The fire resistance of building elements, components or assemblies not complying with Section 703.2.1 or 703.2.2 shall be permitted to be established by an alternative protection method in accordance with Section ((104.11)) 104.5.
- A bracketed [S] at the beginning of a section means the change comes from SDCI.
- A bracketed [W] indicates a change adopted by the State of Washington.
- Underlined or struck out text not accompanied by a vertical change bar is not new and was a change adopted in a previous code cycle.
- Text accompanied by a vertical change bar but no [S] or [W] at the beginning of the section and no underlined or struck out text indicates that new changes were made in the base code text by the International Code Council.