Thornley Plumbing LLC
Plumbing Specialty · Kenmore, WA · License #THORNPL833DC
Registration expired per WA L&I as of May 28, 2021.
Thornley Plumbing LLC is one of 5 Plumbing Specialty contractors registered in Kenmore, registered with WA L&I since 2017. Principals on record since 2017.
How confident can you be in Thornley Plumbing LLC?
Are they licensed, bonded, and insured?
Registration expired per WA L&I as of May 28, 2021.
Are they who they say they are?
Not yet verified — Thornley Plumbing LLC 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 Kenmore.
Do they have jobs on record?
Not yet measured — Thornley Plumbing LLC 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. What do these mean?
License facts
- License type
- CONSTRUCTION CONTRACTOR
- Effective date
- Mar 3, 2017
- Expiration date
- May 28, 2021
- Suspend date
- Mar 3, 2021
- UBI
- 604096208
- Business type
- Limited Liability Company
- Phone
- (206) 434-6473
- Location
- Kenmore, WA 98028
Source: WA L&I contractor registration — checked Sep 28, 2026. Applies to every row above.
Registration lapsed May 2021 per WA L&I records.
Is this your business? Claim it free to verify ownership — takes about two minutes.
Claim this free listingBond & 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
| Name | Start date |
|---|---|
| Leslie James Thornley | Mar 3, 2017 |
What is a Plumbing Specialty 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 5 Plumbing Specialty contractors registered in Kenmore.
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Subser doesn't have reviews or star ratings. This page shows Thornley Plumbing LLC'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 Sep 28, 2026. Subser doesn't do star ratings or reviews — just verified records.