Washington contractor license
O'NEILL PLUMBING CO
- CC-01 General
O'NEILL PLUMBING CO is a CC-01 General contractor in Seattle, licensed in Washington for 51 years (since 1975). As of Oct 28, 2026, the license is active with an expiration date of Mar 20, 2027 on record and a license bond is on file.
O'NEILL PLUMBING COCC-01 General · checked Oct 28, 2026
ActiveLicense number#ONEILP*253DP
Licensed sinceMar 17, 1975
Years licensed51 years
Expiration on recordMar 20, 2027
City and countySeattle
License bondOn file
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Source: Washington State Department of Labor & Industries (L&I) contractor records. Last updated Oct 28, 2026. Page refreshed Nov 4, 2026.