Mechanical & Machine Services

Electrical · Kennewick, WA · License #MECHAMS937KH

Registration expired per WA L&I as of Jun 30, 2020.

What do these mean?

Mechanical & Machine Services is one of 113 Electrical contractors registered in Kennewick, registered with WA L&I since 2007. Registered longer than roughly 75% of Electrical contractors in Kennewick. Principals on record since 2007.

How confident can you be in Mechanical & Machine Services?

Are they licensed, bonded, and insured?

Registration expired per WA L&I as of Jun 30, 2020.

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

Are they who they say they are?

Not yet verified — Mechanical & Machine Services 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 Kennewick.

Do they have jobs on record?

Not yet measured — Mechanical & Machine Services 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
ELECTRICAL CONTRACTOR
Effective date
Jul 3, 2007
Expiration date
Jun 30, 2020
UBI
601704910
Business type
Individual
Phone
(509) 727-2176
Location
Kennewick, WA 99337

Source: WA L&I contractor registration — checked Nov 11, 2026. Applies to every row above.

Registration lapsed Jun 2020 per WA L&I records.

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Bond & insurance on file

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.

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
Timothy J MainwaringMay 8, 2007
What is a Electrical contractor licensed to do in Washington?

An electrical contractor in Washington holds an electrical contractor license issued by the Department of Labor & Industries, a separate program from construction contractor registration. Typical work includes service and panel upgrades, branch circuit wiring, lighting, and troubleshooting. Individual electricians are additionally certified through the state's electrician 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 113 Electrical contractors registered in Kennewick.

Looking for reviews of Mechanical & Machine Services?

Subser doesn't have reviews or star ratings. This page shows Mechanical & Machine Services'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 Nov 11, 2026. Subser doesn't do star ratings or reviews — just verified records.