HomeCrafto
Menu
Quick tools

Popular Trades

PlumbersElectriciansHVAC & ClimateGeneral ContractorsRoofersAll 22 trade categories →

Locations & GPS

Use my locationNew York City, NYSeattle, WAAustin, TXStamford, CTAll open cities →

Homeowner Toolkit

Match project to tradePrepare project briefCompare records (0/3)Saved records on deviceHow our data works →
Sign in

King County, Washington

General contracting in King County, Washington

Illustration for General contracting
Illustration, not a business photoPrepare brief →

Browse 9,409 verified general contracting registered across King County, Washington (including Seattle, Bellevue, Kent, Renton, Federal Way, Kirkland). Every record is compiled from Washington State Department of Labor & Industries (WA L&I) public credential files under Revised Code of Washington RCW 18.27 (Contractor Registration), RCW 19.28 (Electrical EL01–EL06), and RCW 18.106 (Plumbing PL01/PL02).

Official State Authority: Washington State Department of Labor & Industries (WA L&I) Official Registry · County Seat: Seattle

Municipalities in King County (32)

Select a city or town in King County to view local permit guidance and registered general contracting records:

Seattle 2314Auburn 949Kent 913Renton 780Bellevue 618Federal Way 610Kirkland 460Redmond 332Woodinville 272Shoreline 196Maple Valley 189Issaquah 179Burien 172Enumclaw 161Tukwila 160Des Moines 130Covington 122Kenmore 115Sammamish 114Seatac 92North Bend 76Pacific 72Mercer Island 68Vashon 55Black Diamond 50Snoqualmie 50Duvall 47Carnation 43Normandy Park 37Algona 24Clyde Hill 6Medina 3

9409 general contracting records · King County, WA

Change
Public Directory Quality: Official WA L&I license records across King County · Zero sponsored order · Never sold as a lead · How our data works →

General contracting directory — King County

9409 matching records across 32 open municipalities · 25 on this page · Contactable records first, then alphabetical.

Prepare briefCompare records (0/3)

Before the first call

  • Describe the job and ask whether it is within their scope and service area.
  • Check the credential with its issuing authority and ask what applies where the work will happen.
  • Ask about insurance, availability, who will do the work, and a written scope.
  • Ask about callout fees, labor or fixed rates, materials, cancellation and any estimate charge.
Prepare a project brief

Verification Overview & Key Takeaways: How to Check Official Credentials

HomeCrafto displays source records with different scopes, including licenses, registrations, municipal permits and community records. A source entry is not proof of qualification for your job. Before signing a work order or paying a deposit, homeowners should confirm that the contractor’s credential number is active, verify that the license classification covers the specific trade scope required for the job, and request a current Certificate of Insurance (COI) directly from the issuing insurance carrier. Independent verification protects your property and ensures compliance with local building codes.

How do you verify a contractor license number and insurance on official portals (FAQ)?

You can verify active license standing and consumer protection rules directly through official government portals, including Washington L&I Contractor Verify, the California Contractors State License Board (CSLB), the Connecticut eLicense Portal, USA.gov State Consumer Protection Offices, and FTC Home Improvement Consumer Guidance. Always confirm municipal permit requirements with your local building department before work begins.