Look up a business or professional license
- If we've issued a professional license to a person or business.
- If their license is active.
- When their license expires.
- If they have professional license violations.
You can search by:
- License number
- Type of license
- Location — Note: Some professional licenses don't list a street address and may not show up if you search just by location.
If you didn't find what you were looking for, you may want to check with other state agencies.
- Search Business Licenses
- Search business licenses issued through the Washington State Business Licensing Service.
- Advanced Business Search (sos.wa.gov)
- Find a corporation or LLC registered in Washington State.
- Hiring a Contractor (lni.wa.gov)
- Make sure a contractor or tradesperson is registered and licensed.
- Provider Credential Search
- Check a health care provider or facility's license.