Serious Plumbing Company

Plumbing · Poulsbo, WA · License #SERIOPC033RS

Registration expired per WA L&I as of Oct 9, 2021.

Serious Plumbing Company is one of 10 Plumbing contractors registered in Poulsbo, registered with WA L&I since 1997. Registered longer than roughly half of Plumbing contractors in Poulsbo. Principals on record since 1997.

How confident can you be in Serious Plumbing Company?

Are they licensed, bonded, and insured?

Registration expired per WA L&I as of Oct 9, 2021.

Source:License facts on this pageVerify at WA L&I

Are they who they say they are?

Not yet verified — Serious Plumbing Company hasn't claimed this listing. Own this business? Claim it free.

Do other pros stand behind them?

No endorsements yet from other licensed contractors in Poulsbo.

Do they have jobs on record?

Not yet measured — Serious Plumbing Company hasn't run jobs through Subser. Performance data comes from real jobs, not reviews.

Subser doesn't do star ratings or reviews — just verified records.

License facts

License type
CONSTRUCTION CONTRACTOR
Effective date
Dec 10, 1997
Expiration date
Oct 9, 2021
UBI
601752370
Business type
Individual
Phone
(360) 697-7900
Location
Poulsbo, WA 98370

Source: WA L&I contractor registration — checked Aug 18, 2026. Applies to every row above.

Registration lapsed Oct 2021 per WA L&I records.

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Bond & insurance on file

What the bond and insurance requirements mean for homeowners

To register as a specialty contractor in Washington, a business must file a $15,000 surety bond with the Department of Labor & Industries; general contractors file $30,000.

The bond is a limited fund a homeowner (or subcontractor or supplier) can make a claim against, through the courts, if a registered contractor fails to meet its obligations on a job. Contractors must also keep general liability insurance on file — at least $50,000 in property damage and $200,000 in public liability coverage, or a $250,000 combined single limit — which covers damage the contractor causes, not workmanship disputes. The rows above are the bond and insurance filings L&I publishes for this registration; whether a specific filing applies to a specific project depends on its dates and terms.

Principals

NameStart date
Greg V WilliamsDec 10, 1997
What is a Plumbing contractor licensed to do in Washington?

A plumbing specialty contractor registration with WA L&I covers plumbing installation and repair work. Individual plumbers in Washington are additionally certified through a separate state plumber-certification program; the contractor registration shown here is the business-level registration. As a condition of registration, contractors in this category file a $15,000 surety bond and proof of general liability insurance with WA L&I. Washington currently lists 10 Plumbing contractors registered in Poulsbo.

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Subser doesn't have reviews or star ratings. This page shows Serious Plumbing Company's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.

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Built from Washington State L&I public records, updated Aug 18, 2026. Subser doesn't do star ratings or reviews — just verified records.