Cook's Plumbing LLC
Plumbing · Seattle, WA · License #COOKSPL781N6
Cook's Plumbing LLC is one of 145 Plumbing contractors registered in Seattle, registered with WA L&I since 2022. Registered longer than roughly half of Plumbing contractors in Seattle. Current filings: $1,000,000 liability coverage through Sep 25, 2027.
How confident can you be in Cook's Plumbing LLC?
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?
Confirmed by the owner — this business claimed and verified this listing.
Do other pros stand behind them?
No endorsements yet from other licensed contractors in Seattle.
Do they have jobs on record?
Not yet measured — Cook's 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
- PLUMBING CONTRACTOR
- Effective date
- Aug 26, 2022
- Expiration date
- Oct 6, 2028
- UBI
- 604922319
- Business type
- Limited Liability Company
- Phone
- (206) 529-7112
- Location
- Seattle, WA 98133
Source: WA L&I contractor registration — checked Nov 11, 2026. Applies to every row above.
Registration is current through Oct 2028.
Bond & insurance on file
| Insurance company | Amount | Agency | Effective | Expiration |
|---|---|---|---|---|
| State National Ins Co Inc | $1,000,000 | — | Sep 25, 2026 | Sep 25, 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.
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 |
|---|---|
| Frank Arnold Cook | Aug 26, 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. The registration requires a $15,000 surety bond and general liability insurance on file with WA L&I. Washington currently lists 145 Plumbing contractors registered in Seattle.
Looking for reviews of Cook's Plumbing LLC?
Subser doesn't have reviews or star ratings. This page shows Cook's Plumbing LLC's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.
Worked with Cook's Plumbing LLC? Endorse them from your own listing.
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Built from Washington State L&I public records, updated Nov 11, 2026. Subser doesn't do star ratings or reviews — just verified records.