General contractor · Seattle, WA

Mark Mehlhaff Company LLC

Active Washington registration MARKMMC858M2 · per L&I records

LicensedBondedInsured

Is Mark Mehlhaff Company LLC Licensed?

Washington L&I records list Mark Mehlhaff Company LLC with registration number MARKMMC858M2 and status ACTIVE, valid until Oct 25, 2027. The business address on file is in Seattle, WA 98116.

License Details

License #: MARKMMC858M2
Status: ACTIVE
License type: Construction Contractor
Specialty: General
First effective: Jul 22, 2015
Expires: Oct 25, 2027
Business type: Limited Liability Company
UBI (state business ID): 603521779
City: Seattle, WA 98116

Bond and Insurance on File

Surety bond: $30,000 · American Contractors Indem CO
Effective Sep 8, 2025 · Until Canceled
Liability insurance: $1,000,000 · State National Ins Co Inc
Expires Oct 27, 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 359 days left before it expires on Oct 25, 2027. Check that date against your project timeline.

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

How This Record Compares in Seattle

Mark Mehlhaff Company LLC has held registration MARKMMC858M2 for 11.3 years. The median for the 2,643 active general contractors with a Seattle address is 6.2 years, and 928 of them have held their registration for 10 years or more, so this registration is among the longer-held ones. 383 of them registered in the last 12 months.

99% of these Seattle 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

Jul 22, 2015: Current registration MARKMMC858M2 took effect.
Sep 8, 2025: $30,000 surety bond with American Contractors Indem CO took effect.
Oct 30, 2026: Our copy of the L&I record was taken.
Oct 25, 2027: Registration expires unless renewed.
Oct 27, 2027: State National Ins Co Inc liability policy on file expires.

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 MARKMMC858M2 or UBI 603521779. The status there is the official one.
Check that the name on your bid or contract matches Mark Mehlhaff Company 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 State National Ins Co Inc 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.

Is This Your Business?

Claim this free listing to add a description, photos and a website link, or join the featured waitlist.

Claim Your Listing or Get Featured on Verified Licensed

Something wrong or want this profile removed? Use the correction or removal request form.