Vanquaethem Backflow LLC

Plumbing · Kirkland, WA · License #VANQUBL861PB

Expired since Nov 7, 2022

State-verifiedWhat does verified mean?
  • State-verified Checked against WA L&I records, updated daily.
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License facts

Vanquaethem Backflow LLC is one of 12 Plumbing contractors registered in Kirkland, registered with WA L&I since 2014. Registered longer than roughly 25% of Plumbing contractors in Kirkland. Principals on record since 2014.

License type
CONSTRUCTION CONTRACTOR
Effective date
Oct 2, 2014
Expiration date
Nov 7, 2022
UBI
603414367
Business type
Limited Liability Company
Phone
(425) 516-3580
Location
Kirkland, WA 98033

Source: WA L&I contractor registration — verified Aug 13, 2026. Applies to every row above.

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Bond & insurance on file

What the bond and insurance requirements mean for homeowners

Registration as a specialty contractor in Washington requires a $15,000 surety bond on file with the Department of Labor & Industries; the general contractor requirement is $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
Joshuaryan VanquaethemOct 2, 2014
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. A $15,000 surety bond and general liability insurance, filed with WA L&I, are required for this registration. Washington currently lists 12 Plumbing contractors registered in Kirkland.

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Built from Washington State L&I public records, updated Aug 13, 2026. No star ratings or reviews — verification only.