Best Licensed Plumbers in Kirkland, WA

18 plumbers companies registered in Kirkland hold current L&I licenses, verified against official records as of August 12, 2026. The 8 companies below passed every verification check, ranked by insurance status and bond amount.

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1. 1.5 Star Backflow Services Inc.

   ✓ L&I License #5STARSB785RZ — verify at state registryInsured — Ohio Security Ins CoBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +14255163580

2. 2.Arc Plumbing Works LLC

   ✓ L&I License #ARCPLPW745MB — verify at state registryInsured — United Financial Casualty CompBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +14259418204

3. 3.Britton Plmb & Mechanical LLC

   ✓ L&I License #BRITTPM794PK — verify at state registryInsured — Liberty Mutual Ins CoBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +14256520822

4. 4.Cardinal Heating & Air

   ✓ L&I License #CARDIHA796RD — verify at state registryInsured — Alaska National Insurance CoBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +14258279997

5. 5.Copper Creek Plumbing Services

   ✓ L&I License #COPPECP796RP — verify at state registryInsured — CLEAR SPRING PROPERTY AND CASUBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +14252391081

6. 6.Empire Drain Co

   ✓ L&I License #EMPIRDC782NR — verify at state registryInsured — Truck Ins ExchangeBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +14254445285

7. 7.Goldstar Plumbing LLC

   ✓ L&I License #GOLDSPL757N2 — verify at state registryInsured — Federated Mutual Ins CoBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +14253009900

8. 8.Green House Plumbing LLC

   ✓ L&I License #GREENHP792RC — verify at state registryInsured — Federated Mutual Ins CoBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +14259999417