General contractor · Maple Valley, WA

Diamond Construction LLC

Active Washington registration DIAMOCL785O2 · per L&I records

LicensedBondedInsured

Is Diamond Construction LLC Licensed?

Washington L&I records list Diamond Construction LLC with registration number DIAMOCL785O2 and status ACTIVE, valid until Sep 22, 2028. The business address on file is in Maple Valley, WA 98038.

License Details

License #: DIAMOCL785O2
Status: ACTIVE
License type: Construction Contractor
Specialty: General
First effective: Sep 22, 2022
Expires: Sep 22, 2028
Business type: Limited Liability Company
UBI (state business ID): 602668492
City: Maple Valley, WA 98038

Bond and Insurance on File

Surety bond: $30,000 · Western Surety Co
Effective Sep 22, 2024 · Until Canceled
Liability insurance: $1,000,000 · Kinsale Insurance Company
Expires Sep 21, 2027

What Active Status Means

The registration is current: L&I has a bond and liability insurance on file and the term has not ended. ACTIVE is necessary but not sufficient, so also check the expiry date, the bond and the insurance below.

Can this business work under this registration? Can work while it stays active.

The registration has 692 days left before it expires on Sep 22, 2028. Check that date against your project timeline.

All status codes are explained in Washington Contractor License Statuses Explained.

Checks for General Contractors

General contractors must file a $30,000 surety bond (RCW 18.27.040, effective July 1, 2024). This record lists a $30,000 bond. See General vs Specialty Contractor Registration in Washington.
Use a general contractor when the project involves more than one trade. Subcontractors on your job must be registered too.
Compare bids on scope, schedule and payment terms, not just the total.
More detail: How to Choose a General Contractor in Washington.

How to Verify This Contractor

Use the Confirm on L&I Verify button and search registration DIAMOCL785O2 or UBI 602668492. The status there is the official one.
Check that the name on your bid or contract matches Diamond Construction LLC exactly (a limited liability company).
On L&I Verify, look for bond claims, lawsuits and any newer registration.
Ask for a certificate of insurance sent directly by the insurer, and compare it with the Kinsale Insurance Company policy on file.

A full walkthrough is in How to Check a Contractor License in Washington.

Record data as of Oct 30, 2026, from the Washington L&I contractor file.

Other General Contractors in Maple Valley

Active general contractor registrations with a Maple Valley address in the same L&I file. Listing here is not an endorsement.

2Drs Construction LLC · General · expires May 19, 2028
A&M Rennovations LLC · General · expires Mar 12, 2027
Advanced Const Specialists LLC · General · expires Apr 1, 2028
Advantage Builders LLC · General · expires Oct 3, 2027
Alex Thunder LLC · General · expires Aug 26, 2028
Alfa Tile And Stone Works · General · expires Oct 21, 2027
All Water Pl Wtr/Fire Res LLC · General · expires Sep 10, 2028
All-Stars Construction LLC · General · expires Nov 15, 2027

Accuracy notice. Data from Washington L&I open data (public domain, PDDL), not affiliated with any government. Records change; confirm on the official L&I Verify tool before hiring. Search other businesses with the Washington contractor license lookup.

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