Welcome to the WSEC Commercial Technical Support Website
PUBLIC NOTICE - The effective date of the 2021 WSEC has been delayed to October 29th, 2023. 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.
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.
An energy code edition selector is incorporated into the online compliance documentation webtool so users can select either the 2015 or 2018 WSEC edition for their commercial compliance documetation. A 2021 WSEC edition will be available in the fall of 2023. This online resource is chock full of helpful information and compliance verification tools.