Best Licensed Plumbers in Black Diamond, WA
5 plumbers companies registered in Black Diamond hold current L&I licenses, verified against official records as of August 12, 2026. The 5 companies below passed every verification check, ranked by insurance status and bond amount.
How we chose: We identified 6 companies registered in Black Diamond. 5 passed license verification. These 5 passed every check. Our methodology
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- Verified
- August 12, 2026
- Phone
- +13608869324
- Verified
- August 12, 2026
- Phone
- +12068415056
- ✓ L&I License #MILESPL7523B — verify at state registryInsured — Federated Mutual Ins CoBonded — $6,000
- Verified
- August 12, 2026
- Phone
- +12065711002
- ✓ L&I License #PNWPIPW755Q6 — verify at state registryInsured — United Financial Casualty CompBonded — $6,000
- Verified
- August 12, 2026
- Phone
- +12064951088
- ✓ L&I License #REDLIM*790MK — verify at state registryInsured — EMC Property & Casualty CompanBonded — $6,000
- Verified
- August 12, 2026
- Phone
- +13608865129
Compare the top 5 at a glance
| Company | License | Insurance on file | Licensed since |
|---|---|---|---|
| Dci Plumbing Inc. | #DCIPLPI799NU | Current | - |
| Diamond Plumbing Inc. | #DIAMOPI795NQ | Current | - |
| Miles Plumbing LLC | #MILESPL7523B | Current | - |
| Pnw Pipe Works | #PNWPIPW755Q6 | Current | - |
| Redline Mechanical | #REDLIM*790MK | Current | - |