General contractor · Bothell, WA

Maston Properties & Const LLC

Active Washington registration MASTOPC912L5 · per L&I records

LicensedBondedInsured

Is Maston Properties & Const LLC Licensed?

Washington L&I records list Maston Properties & Const LLC with registration number MASTOPC912L5 and status ACTIVE, valid until Jul 1, 2027. The business address on file is in Bothell, WA 98021.

License Details

License #: MASTOPC912L5
Status: ACTIVE
License type: Construction Contractor
Specialty: General
First effective: Jun 25, 2009
Expires: Jul 1, 2027
Business type: Limited Liability Company
UBI (state business ID): 602856257
City: Bothell, WA 98021

Bond and Insurance on File

Surety bond: $30,000 · Platte River Ins Co
Effective Jun 25, 2025 · Until Canceled
Liability insurance: $1,000,000 · Champlain Specialty Insurance
Expires Oct 31, 2026

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 243 days left before it expires on Jul 1, 2027. Check that date against your project timeline.

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

How This Record Compares in Bothell

Maston Properties & Const LLC has held registration MASTOPC912L5 for 17.3 years. The median for the 579 active general contractors with a Bothell address is 4.4 years, and 145 of them have held their registration for 10 years or more, so this registration is among the longer-held ones. 104 of them registered in the last 12 months.

100% of these Bothell 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

Jun 25, 2009: Current registration MASTOPC912L5 took effect.
Jun 25, 2025: $30,000 surety bond with Platte River Ins Co took effect.
Oct 30, 2026: Our copy of the L&I record was taken.
Oct 31, 2026: Champlain Specialty Insurance liability policy on file expires.
Jul 1, 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 MASTOPC912L5 or UBI 602856257. The status there is the official one.
Check that the name on your bid or contract matches Maston Properties & Const 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 Champlain Specialty Insurance 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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