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Nearby Plumber — nearbyplumber.com · License-verified plumbing directory · printed Oct 22, 2026
Plumbers › Washington › King County › O’Neill Plumbing Co.
Licensed Plumbing Contractor — Journey Level · Seattle, WA

O’Neill Plumbing Co.

✓ L&I Verified Seattle, WA · King County

O’Neill Plumbing Co., based in Seattle, WA, holds L&I license ONEILPC793ND (Plumbing Contractor — Journey Level), which read active when we checked it on Oct 21, 2026.

License
Plumbing Contractor — Journey Level
License status
● Active
Last checked
Oct 21, 2026

L&I license verification for O’Neill Plumbing Co.

LicenseLicense numberStatus
Plumbing Contractor — Journey Level ONEILPC793ND ● Active
Last checked against L&I records: Oct 21, 2026· Look up license ONEILPC793ND on the L&I contractor verification ↗

What the L&I badge means

  • Their license number appears in the L&I record and reads active on the date shown.
  • The name and county we list match that record.
  • We re-check on a schedule and date-stamp every check.

What the badge does not mean

  • It is not a recommendation, an endorsement or a quality rating.
  • It does not confirm insurance, bonding or pricing.
  • It does not mean they are taking work right now.

Where O’Neill Plumbing Co. is based

County of record on the L&I listing. That is where the business is filed, not where it works. The license is valid statewide.

O’Neill Plumbing Co. reviews

No customer reviews of O’Neill Plumbing Co. yet. We only publish reviews from confirmed customers after completed work, and we never import or synthesize them.

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