Welcome to the WSEC Commercial Technical Support Website

The effective date of the 2021 WSEC is 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 WEBTOOLS FOR ENVELOPE, LIGHTING & MECHANCIAL ARE AVAILABLE NOW!!! These online tools are available to start navigating the new requirements of the 2021 WSEC-C. 

READY TO GET STARTED? Create an account to explore all the helpful tools & features.

To get started, create an account for you or your company

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Fact sheets, on-demand webinars and classroom trainings

WSEC Education

Jurisdiction contact information, WSEC compliance submittal requirements

Jurisdiction Information

Code documents, official interpretations and amendments

WSEC Documents