Welcome to the WSEC Commercial Technical Support Website
PUBLIC NOTICE - The effective date of the 2021 WSEC has been delayed to MARCH 15TH, 2024. Refer to announcement on the SBCC webpage.
This website provides helpful technical resources and supports the process of demonstrating compliance with the Washington State Energy Code (WSEC) Commercial Provisions. Features and resources available include an energy code documents portal, compliance documentation forms and online tools, searchable frequently asked questions feature and one-on-one technical support. The online compliance documentation webtool includes a code edition selector so users can select the applicable WSEC edition for their commercial project. This online resource is chock full of helpful information and compliance verification tools.
Compliance with the Energy Code is required throughout WA State for all new construction, additions and retrofit projects. When submitting your project for a building, electrical or mechanical permit, information required includes the Code provisions that apply to the project and the design measures taken to comply with these provisions. Select the Jurisdiction Information icon for specific information about each jurisdiction.
2021 WSEC-C EDITION FOR ENVELOPE AND LIGHTING IS AVAILABLE NOW!!! These beta tools are available to start navigating the new requirements of the 2021 WSEC-C. Compliance tools for mechanical and service water heating will be available in March 2024.