General contractor · Mukilteo, WA

4 Son'S Construction

Active Washington registration 4SONSSC742O1 · per L&I records

LicensedBondedInsured

Is 4 Son'S Construction Licensed?

Washington L&I records list 4 Son'S Construction with registration number 4SONSSC742O1 and status ACTIVE, valid until Sep 21, 2028. The business address on file is in Mukilteo, WA 98275.

License Details

License #: 4SONSSC742O1
Status: ACTIVE
License type: Construction Contractor
Specialty: General
First effective: Sep 21, 2026
Expires: Sep 21, 2028
Business type: Individual
UBI (state business ID): 604353182
City: Mukilteo, WA 98275

Bond and Insurance on File

Surety bond: $30,000 · Ohio Cas Ins Co
Effective Sep 14, 2026 · Until Canceled
Liability insurance: $1,000,000 · Scottsdale Ins Co
Expires Oct 13, 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 691 days left before it expires on Sep 21, 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 4SONSSC742O1 or UBI 604353182. The status there is the official one.
Check that the name on your bid or contract matches 4 Son'S Construction exactly (a individual).
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 Scottsdale 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.

Other General Contractors in Mukilteo

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

1St Choice Siding LLC · General · expires May 18, 2028
2209 Investments LLC · General · expires May 14, 2028
3Rd Generation Flooring Inc · General · expires Jan 6, 2027
5 Star Remodeling · General · expires Apr 9, 2028
A Helping Hand Lndscpng/Pntng · General · expires Jun 26, 2028
A-Pex Design Services Inc · General · expires Jul 3, 2028
Ace Residential Renovation LLC · General · expires Feb 12, 2028
Afk Perfection LLC · General · expires Jun 17, 2028

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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