Best Plumbing Group LLC
Plumbing · Seattle, WA · License #BESTPPG797MF
Best Plumbing Group LLC is one of 142 Plumbing contractors registered in Seattle, registered with WA L&I since 2022. Registered longer than roughly half of Plumbing contractors in Seattle. Current filings: $6,000 surety bond (continuous) and $1,000,000 liability coverage through Jan 15, 2027.
How confident can you be in Best Plumbing Group LLC?
Are they licensed, bonded, and insured?
Active license, $6,000 bond 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 — Best Plumbing Group 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 Seattle.
Do they have jobs on record?
Not yet measured — Best Plumbing Group 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
- PLUMBING CONTRACTOR
- Effective date
- Feb 9, 2022
- Expiration date
- Feb 9, 2028
- UBI
- 602254720
- Business type
- Limited Liability Company
- Phone
- (206) 633-1700
- Location
- Seattle, WA 98103
Source: WA L&I contractor registration — checked Sep 29, 2026. Applies to every row above.
Registration is current through Feb 2028.
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 |
|---|---|---|---|
| Federated Mutual Ins Co | $6,000 | Jul 7, 2021 | Continuous — until canceled |
| Insurance company | Amount | Agency | Effective | Expiration |
|---|---|---|---|---|
| Federated Mutual Ins Co | $1,000,000 | Federated Mutual Ins Co - MN | Jan 15, 2025 | Jan 15, 2027 |
What the bond and insurance requirements mean for homeowners
Washington requires a surety bond and general liability insurance on file with the Department of Labor & Industries as a condition of licensing; the required amount is set by the license type. This contractor's current filing shows a $6,000 bond.
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 |
|---|---|
| William Andrew Lilleness | Jul 1, 2021 |
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. The registration requires a $15,000 surety bond and general liability insurance on file with WA L&I. Washington currently lists 142 Plumbing contractors registered in Seattle.
Looking for reviews of Best Plumbing Group LLC?
Subser doesn't have reviews or star ratings. This page shows Best Plumbing Group LLC's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.
Own Best Plumbing Group LLC? Claim the listing free. Worked with Best Plumbing Group LLC? Endorse them from your own listing.
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Built from Washington State L&I public records, updated Sep 29, 2026. Subser doesn't do star ratings or reviews — just verified records.