Washington — How to Check a Contractor's License

Washington requires contractors to hold a state license for projects exceeding All construction work (no minimum threshold) in labor and materials. The Department of Labor and Industries (L&I) oversees licensing, complaints, and disciplinary actions.

Step 1: Get the Contractor's License Number

Any legitimate contractor in Washington should readily provide their license number. It should appear on their business card, vehicle, website, and advertising. If a contractor refuses to share their license number, don't hire them.

Step 2: Verify the License

Visit the Department of Labor and Industries (L&I) website to look up the contractor's license. We're working on adding Washington license data to our search tool — check our Washington page for updates.

When checking the license, verify:

• Status is "Active" — not expired, suspended, or revoked
• Name matches — the business name on the license should match who you're hiring
• Classifications cover your project — a plumbing license doesn't cover electrical work
• License won't expire during your project

Step 3: Check Bond and Insurance

Washington requires licensed contractors to carry a surety bond ($12,000 (general contractor); $6,000 (specialty contractor)). The bond protects consumers if the contractor violates state regulations or abandons a project. Ask the contractor for proof of their bond, and verify it through the Department of Labor and Industries (L&I).

Step 4: Check Complaint History

The Department of Labor and Industries (L&I) tracks complaints filed against licensed contractors. Before hiring, check if the contractor has any past disciplinary actions, complaints, or violations. Visit the Department of Labor and Industries (L&I) website to check complaint history.

What Happens if You Hire an Unlicensed Contractor?

Hiring an unlicensed contractor in Washington puts you at risk:

• Your homeowner's insurance may not cover work done by unlicensed contractors
• You have limited legal recourse if the work is defective
• No surety bond to file claims against
• Unpermitted work can cause problems when selling your home
• No bond protection — the bond is your safety net

How to Report an Unlicensed Contractor in Washington

If you suspect a contractor is working without a license in Washington, report them to the Department of Labor and Industries (L&I). Unlicensed contracting is typically a misdemeanor and carries fines and potential jail time.

Other States

Looking up a contractor in a different state? Visit our state-by-state contractor license lookup page to find the right verification tool for your state.