Moss Bay Plumbing Limited

Plumbing · Renton, WA · License #MOSSBPL000OO

Registration expired per WA L&I as of Mar 15, 2023.

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Are they licensed, bonded, and insured?

Registration expired per WA L&I as of Mar 15, 2023.

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

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Do they have jobs on record?

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License facts

Moss Bay Plumbing Limited is one of 22 Plumbing contractors registered in Renton, registered with WA L&I since 2000. Registered longer than roughly 75% of Plumbing contractors in Renton. Principals on record since 1980.

License type
CONSTRUCTION CONTRACTOR
Effective date
Sep 20, 2000
Expiration date
Mar 15, 2023
Suspend date
Jun 22, 2022
UBI
602049480
Business type
Corporation
Phone
(425) 868-8446
Location
Renton, WA 98057

Source: WA L&I contractor registration — checked Aug 15, 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
Brian John KnapikJan 1, 1980
Maxine Bielby KnapikJan 1, 1980
Andrew Brian KnapikApr 11, 2006
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 22 Plumbing contractors registered in Renton.

Other Plumbing contractors in Renton, WA

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Built from Washington State L&I public records, updated Aug 15, 2026. Subser doesn't do star ratings or reviews — just verified records.