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O'Neill Plumbing

In Seattle, Washington, O'Neill Plumbing is listed as a plumbing contractor.

  • Plumbing contractor

Who is O'Neill Plumbing?

According to its website, it was founded in 1917.

Its office is at 6056 California Avenue Southwest, Seattle, WA 98136. The phone number on record is (206) 932-5283. More about the company is on its website, oneillplumbing.com.

O'Neill Plumbing is one of 44 construction companies we list in Seattle. Before you hire any contractor in Washington, check the license with the Washington State Department of Labor and Industries.

What does O'Neill Plumbing say about its work?

O'Neill Plumbing has served West Seattle since 1917. We are licensed residential and commercial plumbers offering emergency plumbing service. Call us for fast, honest repairs you can count on.

In the company's own words, from oneillplumbing.com, read November 2026.

Where is O'Neill Plumbing located?

O'Neill Plumbing is at 6056 California Avenue Southwest, Seattle, WA 98136.

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How do I check O'Neill Plumbing's contractor license?

Search the Washington State Department of Labor and Industries for O'Neill Plumbing before you hire. We do not hold license records for individual companies. Washington requires contractors to register with the Department of Labor and Industries, and licenses electricians and plumbers.

Check a license in Washington

Licensing rules checked October 2026. Requirements change, so confirm on the state site.

Run a business like O'Neill Plumbing? See our plumber website design and construction website design services.

Which construction companies are near O'Neill Plumbing?

The nearest listed company is Seattle Plumbing Pros, about 2.1 miles away in Seattle, WA.

What other construction companies are in Seattle?

We list 44 construction companies in Seattle. Here are 8 more.

All construction companies in Seattle
FAQ

O'Neill Plumbing: FAQs

Where is O'Neill Plumbing located?

O'Neill Plumbing is at 6056 California Avenue Southwest, Seattle, WA 98136.

What kind of company is O'Neill Plumbing?

O'Neill Plumbing is listed as a plumbing contractor in Seattle, Washington.

What does O'Neill Plumbing say about its work?

On oneillplumbing.com, O'Neill Plumbing describes itself like this: "O'Neill Plumbing has served West Seattle since 1917. We are licensed residential and commercial plumbers offering emergency plumbing service. Call us for fast, honest repairs you can count on."

How do I contact O'Neill Plumbing?

Call (206) 932-5283. Visit oneillplumbing.com. The office is at 6056 California Avenue Southwest, Seattle, WA 98136.

Is O'Neill Plumbing licensed?

We do not hold license records for individual companies. Washington requires contractors to register with the Department of Labor and Industries, and licenses electricians and plumbers. Search the Washington State Department of Labor and Industries to check a contractor before you hire.

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