Launch state · data as of Oct 30, 2026
Washington Contractor Licenses
Washington requires construction contractors to register with the Department of Labor & Industries (L&I), post a bond and carry liability insurance. We republish L&I's public-domain registration data in a form that is fast to search and easy to compare.
Search the Washington Contractor License Lookup
Browse by Trade
- 01
Licensed General Contractors in Washington
46,004 active registrations · 161 city lists
- 02
Licensed Electricians in Washington
4,784 active registrations · 22 city lists
- 03
Licensed Painters in Washington
2,134 active registrations · 10 city lists
- 04
Licensed Landscapers in Washington
1,447 active registrations · 2 city lists
- 05
Licensed Plumbers in Washington
2,007 active registrations · 5 city lists
Status and Expiry
Registrations last two years and must be renewed on or before the expiry date (RCW 18.27.060). See which registrations in our city lists lapse soon on the Washington contractor licenses expiring in the next 30 days page, or learn what each status means in the guide Washington contractor license statuses explained.
Key Washington Rules
- How to check a contractor license in Washington
- Washington contractor bond requirements
- Washington contractor insurance requirements
The largest list is Seattle with 2,643 active registrations in one trade.