General contractor · Auburn, WA

Mn Stoneworks Inc

Active Washington registration MNSTOSI837O7 · per L&I records

LicensedBondedInsured

Is Mn Stoneworks Inc Licensed?

Washington L&I records list Mn Stoneworks Inc with registration number MNSTOSI837O7 and status ACTIVE, valid until Oct 29, 2027. The business address on file is in Auburn, WA 98001.

License Details

License #: MNSTOSI837O7
Status: ACTIVE
License type: Construction Contractor
Specialty: General
First effective: Sep 27, 2017
Expires: Oct 29, 2027
Business type: Corporation
UBI (state business ID): 604173220
City: Auburn, WA 98001

Bond and Insurance on File

Surety bond: $30,000 · Lexon Ins Co
Effective Oct 22, 2025 · Until Canceled
Liability insurance: $1,000,000 · Liberty Mutual Ins Co
Expires Mar 31, 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 363 days left before it expires on Oct 29, 2027. Check that date against your project timeline.

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

How This Record Compares in Auburn

Mn Stoneworks Inc has held registration MNSTOSI837O7 for 9.1 years. The median for the 1,018 active general contractors with an Auburn address is 4.9 years, and 272 of them have held their registration for 10 years or more, so this registration is at or above the local median. 142 of them registered in the last 12 months.

100% of these Auburn records have a surety bond on file and 100% have liability insurance on file. The median insurance amount on file is $1,000,000; this business lists $1,000,000, which is equal to that median. Insurance amounts are what the insurer reported to L&I; they are not a rating of the business.

Record Timeline

Sep 27, 2017: Current registration MNSTOSI837O7 took effect.
Oct 22, 2025: $30,000 surety bond with Lexon Ins Co took effect.
Oct 30, 2026: Our copy of the L&I record was taken.
Mar 31, 2027: Liberty Mutual Ins Co liability policy on file expires.
Oct 29, 2027: Registration expires unless renewed.

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 MNSTOSI837O7 or UBI 604173220. The status there is the official one.
Check that the name on your bid or contract matches Mn Stoneworks Inc exactly (a corporation).
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 Liberty Mutual Ins Co 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.

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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