Washington State Department of Labor & Industries
Washington contractor license lookup (L&I)
Look up a Washington contractor license by business name or license number. 457 licensed contractors located in Washington are listed below by trade and city, each with its license classification, status and expiration date.
Washington contractors by trade
- General Contractors211
- Electricians118
- Plumbers85
- HVAC Contractors15
- Home Improvement Contractors11
- Painters5
- Concrete & Masonry Contractors3
- Fire Protection & Security Contractors3
- Excavation & Earthwork Contractors2
- Roofers2
- Landscapers1
- Pool & Spa Contractors1
L&I license classifications
All 29 classifications →- General Contractor 915 holders
- Plumbing Contractor 192 holders
- Electrical Contractor (General) 168 holders
- HVAC/Refrigeration Electrical Contractor 60 holders
- Limited Energy Electrical Contractor 52 holders
- HVAC/R Specialty Contractor 36 holders
- Residential Electrical Contractor 17 holders
- Fire Protection Specialty Contractor 14 holders
- Roofing Specialty Contractor 12 holders
- Utilities & Telecommunications Specialty Contractor 12 holders
- Concrete Specialty Contractor 10 holders
- Painting & Wallcovering Specialty Contractor 10 holders
Largest cities
- Arlington 4
- Auburn 6
- Battle Ground 17
- Bellevue 6
- Bellingham 13
- Bothell 4
- Bremerton 5
- Camas 5
- East Wenatchee 3
- Edmonds 3
- Everett 5
- Federal Way 5
- Ferndale 3
- Fife 3
- Gig Harbor 4
- Issaquah 3
- Kennewick 8
- Kent 13
- Kirkland 3
- Lacey 3
- Longview 6
- Lynden 5
- Lynnwood 10
- Mercer Island 3
- Moses Lake 7
- Mukilteo 3
- Olympia 7
- Pacific 3
- Pasco 3
- Poulsbo 3
- Pullman 3
- Puyallup 5
- Redmond 6
- Renton 4
- Ridgefield 8
- Seattle 30
- Snohomish 9
- Spokane 16
- Spokane Valley 4
- Sumner 4
- Tacoma 16
- Tukwila 4
- Vancouver 44
- Walla Walla 6
- Washougal 4
- Woodinville 10
- Woodland 11
- Yakima 8
Official L&I lookup
Washington contractor licenses are issued by the Washington State Department of Labor & Industries. Confirm the live record on its official lookup before you sign a contract.
Official L&I lookup ↗Washington license lookup questions
How do I look up a Washington contractor license?
Search the business name or license number on this page to see its Washington license numbers, classification, status and expiration date. Contractor licenses in Washington are issued by the Washington State Department of Labor & Industries (L&I); confirm the live record on its official lookup (https://secure.lni.wa.gov/verify/).
Can I look up a Washington contractor license by name?
Yes. Type all or part of the business name: every word must start a word of the name, so "acme plumb" finds "Acme Plumbing & Heating, Inc.".
What does an active license mean in Washington?
An active license means the state listed the license as current when its records were published. Licenses can expire, be suspended or be renewed afterwards, so always check the agency's live record before signing a contract.
Why is a business I know not listed?
DingDongWork lists trade businesses that hold an active license and have a published address. Individuals' professional licenses and inactive records are not listed, and some trades are licensed by cities or counties rather than the state.