How do I check a contractor in Washington State?
Researched by the LokalMatch editorial team1 answer
Two bids, one much cheaper, and the cheap one has no registration number on the paperwork.
Answers (1)
LokalMatch EditorialLokalMatch editorial
Every construction contractor in Washington has to register with Labor and Industries, so a missing number is not a paperwork oversight. Registration is the baseline, and it comes with money attached.
The bond is where the amounts live. A general contractor must carry a continuous surety bond of 30,000 dollars; a specialty contractor, 15,000. On top of that they need general liability cover of either 200,000 dollars public liability and 50,000 property damage, or 250,000 combined single limit.
That bond is not a guarantee you will be made whole — it is a pool, and other claimants can get there first — but it is the difference between a claim and a wish.
Use the state's verification tool rather than the certificate he emails you. L and I's own advice is to confirm the license is active, that the contractor is bonded and insured for damages, that the job site record is clean or the violations corrected, and to read the license history for previous lawsuits and violations. That history is the single most useful thing on the page, and it is free.
Answers come from pros and are reviewed by LokalMatch before they’re published. They’re general information — for regulated or safety-critical work, have a licensed professional assess your situation.
Sources
Where the facts on this page come from.
Register as a Contractor — Washington State Department of Labor and Industries (accessed September 24, 2026)
Hiring a Contractor — Washington State Department of Labor and Industries (accessed September 24, 2026)
