Trusted Plumbing & Heating LLC

Plumbing · Renton, WA · License #TRUSTPH781NC

Trusted Plumbing & Heating LLC is one of 43 Plumbing contractors registered in Renton, registered with WA L&I since 2022. Registered longer than roughly half of Plumbing contractors in Renton. Current filings: $6,000 surety bond (continuous) and $1,000,000 liability coverage through May 17, 2027.

How confident can you be in Trusted Plumbing & Heating 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.

Source:License facts on this pageVerify at WA L&I

Are they who they say they are?

Not yet verified — Trusted Plumbing & Heating 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 Renton.

Do they have jobs on record?

Not yet measured — Trusted Plumbing & Heating 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 3, 2022
Expiration date
Aug 3, 2028
UBI
603616654
Business type
Limited Liability Company
Phone
(206) 575-8436
Location
Renton, WA 98057

Source: WA L&I contractor registration — checked Sep 26, 2026. Applies to every row above.

Registration is current through Aug 2028.

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Bond & insurance on file

Bond firmAmountEffectiveExpiration
Nationwide Mutual Ins Co$6,000Aug 1, 2026Continuous — until canceled
NORTH RIVER INSURANCE COMPANY THE$6,000Aug 1, 2022Continuous — until canceled
Insurance companyAmountAgencyEffectiveExpiration
Mid-Century Ins Co$1,000,000Ahern Insurance Agency LLCMay 17, 2023May 17, 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

NameStart date
James Michael CunninghamAug 3, 2022
Douglas MergenthalerAug 3, 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 43 Plumbing contractors registered in Renton.

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Subser doesn't have reviews or star ratings. This page shows Trusted Plumbing & Heating LLC's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.

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Built from Washington State L&I public records, updated Sep 26, 2026. Subser doesn't do star ratings or reviews — just verified records.