Diamond Concrete LLC

Concrete · Auburn, WA · License #DIAMOCL829MT

Diamond Concrete LLC is one of 29 Concrete contractors registered in Auburn, registered with WA L&I since 2018. Registered longer than roughly 75% of Concrete contractors in Auburn. Current filings: $30,000 surety bond (continuous) and $1,000,000 liability coverage through Jun 22, 2027.

How confident can you be in Diamond Concrete LLC?

Are they licensed, bonded, and insured?

Active license, $30,000 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 — Diamond Concrete 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 Auburn.

Do they have jobs on record?

Not yet measured — Diamond Concrete LLC hasn't run jobs through Subser. Performance data comes from real jobs, not reviews.

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License facts

License type
CONSTRUCTION CONTRACTOR
Effective date
Sep 7, 2018
Expiration date
Sep 11, 2028
UBI
604277974
Business type
Limited Liability Company
Phone
(253) 353-1826
Location
Auburn, WA 98092

Source: WA L&I contractor registration — checked Sep 28, 2026. Applies to every row above.

Registration is current through Sep 2028.

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Bond & insurance on file

Bond firmAmountEffectiveExpiration
NORTH RIVER INSURANCE COMPANY THE$30,000Aug 15, 2024Continuous — until canceled
Navigators Ins Co$6,000Jun 13, 2020Canceled Jun 15, 2022
NORTH RIVER INSURANCE COMPANY THE$12,000Jun 13, 2024Aug 15, 2024
NORTH RIVER INSURANCE COMPANY THE$6,000Jun 13, 2022Jun 13, 2024
Insurance companyAmountAgencyEffectiveExpiration
Richmond National Insurance Co$1,000,000Murillo's financial center incJun 22, 2026Jun 22, 2027
What the bond and insurance requirements mean for homeowners

A $15,000 surety bond, filed with the Department of Labor & Industries, is a condition of registration for specialty contractors in Washington (general contractors file $30,000). This contractor's current filing shows a $30,000 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
Juan Carlos ValdezJul 27, 2018
Samuel Guzman ValdezJul 27, 2018
What is a Concrete contractor licensed to do in Washington?

A concrete specialty contractor is registered with WA L&I to form, pour, and finish concrete — foundations, slabs, driveways, sidewalks, and similar flatwork or structural concrete. The registration covers concrete work only. Washington requires a $15,000 surety bond and general liability insurance for this registration. Washington currently lists 29 Concrete contractors registered in Auburn.

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Subser doesn't have reviews or star ratings. This page shows Diamond Concrete 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 28, 2026. Subser doesn't do star ratings or reviews — just verified records.