Castle Plumbing Service INC
Plumbing · Langley, WA · License #CASTLPS787BR
Castle Plumbing Service INC is one of 5 Plumbing contractors registered in Langley, registered with WA L&I since 2022. Current filings: $6,000 surety bond (continuous) and $1,000,000 liability coverage through Feb 24, 2027. Principals on record since 2022.
How confident can you be in Castle Plumbing Service INC?
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 — Castle Plumbing Service 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 Langley.
Do they have jobs on record?
Not yet measured — Castle Plumbing Service 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
- Feb 17, 2022
- Expiration date
- Feb 17, 2028
- UBI
- 602279140
- Business type
- Corporation
- Phone
- (360) 321-5188
- Location
- Langley, WA 98260
Source: WA L&I contractor registration — checked Nov 11, 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 |
|---|---|---|---|
| Western Surety Co | $6,000 | Feb 25, 2022 | Continuous — until canceled |
| Insurance company | Amount | Agency | Effective | Expiration |
|---|---|---|---|---|
| United Financial Casualty Comp | $1,000,000 | — | Feb 24, 2026 | Feb 24, 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. 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 |
|---|---|
| Mark Robert Nielson | Jan 10, 2022 |
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 5 Plumbing contractors registered in Langley.
Looking for reviews of Castle Plumbing Service INC?
Subser doesn't have reviews or star ratings. This page shows Castle Plumbing Service INC's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.
Own Castle Plumbing Service INC? Claim the listing free. Worked with Castle Plumbing Service INC? Endorse them from your own listing.
Other Plumbing contractors in Langley, WA
Browse the directory
Built from Washington State L&I public records, updated Nov 11, 2026. Subser doesn't do star ratings or reviews — just verified records.