Nilsson & Zier LLC

Electrical · Prosser, WA · License #NILSSZL806PW

Registration expired per WA L&I as of Oct 14, 2022.

What do these mean?

Nilsson & Zier LLC is one of 10 Electrical contractors registered in Prosser, registered with WA L&I since 2020. Registered longer than roughly 25% of Electrical contractors in Prosser. Principals on record since 2020.

How confident can you be in Nilsson & Zier LLC?

Are they licensed, bonded, and insured?

Registration expired per WA L&I as of Oct 14, 2022.

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

Are they who they say they are?

Not yet verified — Nilsson & Zier 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 Prosser.

Do they have jobs on record?

Not yet measured — Nilsson & Zier 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
ELECTRICAL CONTRACTOR
Effective date
Oct 14, 2020
Expiration date
Oct 14, 2022
UBI
604548327
Business type
Limited Liability Company
Phone
(509) 940-0999
Location
Prosser, WA 99350

Source: WA L&I contractor registration — checked Nov 13, 2026. Applies to every row above.

Registration lapsed Oct 2022 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
Trenton M NilssonOct 14, 2020
Matthew P ZierOct 14, 2020
Nilsson & Zier LlcOct 16, 2020
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 10 Electrical contractors registered in Prosser.

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Subser doesn't have reviews or star ratings. This page shows Nilsson & Zier 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 Nov 13, 2026. Subser doesn't do star ratings or reviews — just verified records.