Duncan Plumbing Company LLC
Plumbing · Friday Harbor, WA · License #DUNCAPC745ON
Duncan Plumbing Company LLC is one of 10 Plumbing contractors registered in Friday Harbor, registered with WA L&I since 2026. Current filings: $6,000 surety bond (continuous) and $1,000,000 liability coverage through Jul 1, 2027. Principals on record since 2026.
How confident can you be in Duncan Plumbing Company 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 — Duncan Plumbing Company 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 Friday Harbor.
Do they have jobs on record?
Not yet measured — Duncan Plumbing Company 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
- Sep 15, 2026
- Expiration date
- Sep 15, 2028
- UBI
- 605635338
- Business type
- Limited Liability Company
- Phone
- (360) 622-6100
- Location
- Friday Harbor, WA 98250
Source: WA L&I contractor registration — checked Sep 28, 2026. Applies to every row above.
Registration is current through Sep 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 27, 2026 | Continuous — until canceled |
| Insurance company | Amount | Agency | Effective | Expiration |
|---|---|---|---|---|
| Federated Mutual Ins Co | $1,000,000 | — | Jul 1, 2026 | Jul 1, 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 |
|---|---|
| Benjamin R Duncan | Sep 15, 2026 |
| Candice A Duncan | Sep 15, 2026 |
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 10 Plumbing contractors registered in Friday Harbor.
Looking for reviews of Duncan Plumbing Company LLC?
Subser doesn't have reviews or star ratings. This page shows Duncan Plumbing Company LLC's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.
Own Duncan Plumbing Company LLC? Claim the listing free. Worked with Duncan Plumbing Company LLC? Endorse them from your own listing.
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Browse the directory
Built from Washington State L&I public records, updated Sep 28, 2026. Subser doesn't do star ratings or reviews — just verified records.