Best Licensed Plumbers in Seattle, WA

97 plumbers companies registered in Seattle 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.Aaa Fire Protection Inc.

   ✓ L&I License #AAAFIFP777PZ — verify at state registryInsured — Hudson Excess Insurance CompanBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +12062841721

2. 2.Aaa Water Heaters

   ✓ L&I License #AAAWAWH741J7 — verify at state registryInsured — FEDERATED RESERVE INSURANCE COBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +12067895353

3. 3.Acclaim Plumbing And Drain

   ✓ L&I License #ACCLAPD763MW — verify at state registryInsured — Farmers Ins ExchangeBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +12532024446

4. 4.Action Plumbing

   ✓ L&I License #ACTIOP*784BO — verify at state registryInsured — Contractors Bonding & InsurancBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +12069720412

5. 5.Advanced Mechanical & Plumbing

   ✓ L&I License #ADVANMP795R3 — verify at state registryInsured — Midvale Indemnity CompBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +12062760665

6. 6.Anthony's Plumbing Company

   ✓ L&I License #ANTHOPC791NR — verify at state registryInsured — State Farm Fire & Cas CoBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +12068028037

7. 7.Aquatechs Water Heater

   ✓ L&I License #AQUATWH755RN — verify at state registryInsured — Spinnaker Insurance CompanyBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +12069206540

8. 8.Aurora Plumbing

   ✓ L&I License #AURORP*798NZ — verify at state registryInsured — Federated Mutual Ins CoBonded — $6,000

   Verified

   August 12, 2026

   Phone

   +12063641140