5 Star Backflow Services INC
Plumbing · Kirkland, WA · License #5STARSB785RZ
5 Star Backflow Services INC is one of 25 Plumbing contractors registered in Kirkland, registered with WA L&I since 2023. Registered longer than roughly 25% of Plumbing contractors in Kirkland. Current filings: $1,000,000 liability coverage through Oct 1, 2027.
How confident can you be in 5 Star Backflow Services INC?
Are they licensed, bonded, and insured?
Active license and $1,000,000 liability on file — checked against WA L&I records, updated daily.
Are they who they say they are?
Not yet verified — 5 Star Backflow Services INC 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 Kirkland.
Do they have jobs on record?
Not yet measured — 5 Star Backflow Services INC 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
- PLUMBING CONTRACTOR
- Effective date
- Jan 9, 2023
- Expiration date
- Jan 9, 2027
- UBI
- 604989684
- Business type
- Corporation
- Phone
- (425) 516-3580
- Location
- Kirkland, WA 98033
Source: WA L&I contractor registration — checked Nov 12, 2026. Applies to every row above.
Registration is current through Jan 2027.
Is this your business? Claim it free to verify ownership — takes about two minutes.
Claim this free listingBond & insurance on file
| Bond firm | Amount | Effective | Expiration |
|---|---|---|---|
| Western Surety Co | $6,000 | Jan 4, 2023 | Canceled Jan 7, 2027 |
| Insurance company | Amount | Agency | Effective | Expiration |
|---|---|---|---|---|
| Ohio Security Ins Co | $1,000,000 | LIBKE INSURANCE ASSOCIATES INC | Oct 1, 2025 | Oct 1, 2027 |
What the bond and insurance requirements mean for homeowners
Licensing in Washington requires a surety bond and general liability insurance filed with the Department of Labor & Industries, in an amount set by the license type.
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 |
|---|---|
| Joshua Ryan Vanquaethem | Nov 29, 2022 |
| Leslie Ann Vanqudethem | Jan 30, 2023 |
What is a Plumbing contractor licensed to do in Washington?
A plumbing contractor in Washington holds a plumbing contractor license issued by the Department of Labor & Industries, a separate program from construction contractor registration. Typical work includes water supply and drain, waste and vent piping, fixture installation, water heaters, and repiping. Individual plumbers are additionally certified through the state's plumber certification program; the license shown here is the business-level license. 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 25 Plumbing contractors registered in Kirkland.
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Subser doesn't have reviews or star ratings. This page shows 5 Star Backflow Services INC's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.
Own 5 Star Backflow Services INC? Claim the listing free. Worked with 5 Star Backflow Services INC? Endorse them from your own listing.
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Built from Washington State L&I public records, updated Nov 12, 2026. Subser doesn't do star ratings or reviews — just verified records.