Washington Contractor License Requirements
Do You Need a Contractor License in Washington?
Washington requires contractors to register with the state. Threshold: Based on activity; no project-dollar floor. Trades such as electrical and plumbing often have separate rules. Confirm with the official site, because rules change.
Open the Official Washington Site
- System
- State Registration
- When it applies
- Based on activity; no project-dollar floor
- Summary checked
- By its authors, 2026-09-04 to 2026-10-26. Not verified by us against state law.
How to Check a Contractor in Washington
Ask for the registration number and search it on the state's official site. Registration usually shows that a business has filed with the state; it is not always a test of skill, so also ask for insurance, references and written bids.
Official Records on This Site
We publish 59,910 active records from the Washington State Department of Labor & Industries, downloaded November 6, 2026. Search by name or number, or use the original dataset.
Common Questions
How do you check a contractor in Washington?
Ask for the registration number and search it on the state's official site. Registration usually shows that a business has filed with the state; it is not always a test of skill, so also ask for insurance, references and written bids.
Does a license mean the contractor is insured?
Not always. Ask for a current certificate of liability insurance and proof of workers’ compensation, and call the insurer to confirm if the job is large.
Contractors in Washington
All 60,406 listed in Washington, most in Seattle, Vancouver, Spokane, Tacoma, Everett, Auburn.
Other States With the Same System
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