Best Licensed Plumbers in Mount Vernon, WA

17 plumbers companies registered in Mount Vernon 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.Delk's Plumbing LLC

   ✓ L&I License #DELKSPL775BZ — verify at state registryInsured — Liberty Mutual Ins CoBonded — $15,000

   Verified

   August 12, 2026

   Phone

   +13603338874

2. 2.A1 Plumbing LLC

   ✓ L&I License #A1PLUPL752O2 — verify at state registryInsured — United Financial Casualty CompBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +13607089985

3. 3.Absolute Plumbing

   ✓ L&I License #ABSOLP*799MB — verify at state registryInsured — FEDERATED RESERVE INSURANCE COBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +13606106141

4. 4.All Clear Plumbing LLC

   ✓ L&I License #ALLCLCP785RH — verify at state registryInsured — Spinnaker Insurance CompanyBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +15649000509

5. 5.All Time Plumbing & Htg LLC

   ✓ L&I License #ALLTITP759LT — verify at state registryInsured — Contractors Bonding & InsurancBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +13607079958

6. 6.Barker Drilling

   ✓ L&I License #BARKEDLA682L — verify at state registryInsured — MESA UNDERWRITERS SPECIALTY INBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +13604225882

7. 7.Booker's Plumbing LLC

   ✓ L&I License #BOOKEPL796NQ — verify at state registryInsured — Contractors Bonding & InsurancBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +13606108821

8. 8.Experience Plumbing LLC

   ✓ L&I License #EXPERPL795PE — verify at state registryInsured — Ohio Security Ins CoBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +13609821737