Pro Staff Mechanical Inc

Is Pro Staff Mechanical Inc Licensed?

Washington L&I records list Pro Staff Mechanical Inc with registration number PROSTMI072NG and status ACTIVE, valid until Jul 3, 2028. The business address on file is in Seattle, WA 98133.

License Details

License #

PROSTMI072NG

Status

ACTIVE

License type

Construction Contractor

Specialty

General

First effective

Aug 7, 1993

Expires

Jul 3, 2028

Business type

Corporation

UBI (state business ID)

601038859

City

Seattle, WA 98133

Bond and Insurance on File

Surety bond

$30,000 · Ohio Cas Ins Co
Effective Jul 1, 2024 · Until Canceled

Liability insurance

$1,000,000 · Liberty Insurance Corp
Expires Jun 30, 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 611 days left before it expires on Jul 3, 2028. Check that date against your project timeline.

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

How This Record Compares in Seattle

Pro Staff Mechanical Inc has held registration PROSTMI072NG for 33.2 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

• Aug 7, 1993: Current registration PROSTMI072NG took effect.
• Jul 1, 2024: $30,000 surety bond with Ohio Cas Ins Co took effect.
• Oct 30, 2026: Our copy of the L&I record was taken.
• Jun 30, 2027: Liberty Insurance Corp liability policy on file expires.
• Jul 3, 2028: Registration expires unless renewed.

Other L&I Registrations Under UBI 601038859

The L&I file lists 1 other contractor registration under the same state business ID (UBI). Older numbers usually reflect renewals under a new number, name changes or a change of business structure.

• PROSTMI006C8 · Pro-Staff Mechanical Inc · ACTIVE · effective Feb 28, 2000, expires Mar 30, 2028

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

1. Use the Confirm on L&I Verify button and search registration PROSTMI072NG or UBI 601038859. The status there is the official one.
2. Check that the name on your bid or contract matches Pro Staff Mechanical Inc exactly (a corporation).
3. On L&I Verify, look for bond claims, lawsuits and any newer registration.
4. Ask for a certificate of insurance sent directly by the insurer, and compare it with the Liberty Insurance Corp 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.

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