Thaiss Plumbing & Sprinklers

Is Thaiss Plumbing & Sprinklers Licensed?

Washington L&I records list Thaiss Plumbing & Sprinklers with registration number THAISPS055NM and status ACTIVE, valid until Aug 14, 2028. The business address on file is in Spokane, WA 99207.

License Details

License #

THAISPS055NM

Status

ACTIVE

License type

Construction Contractor

Specialty

General

First effective

Aug 14, 1995

Expires

Aug 14, 2028

Business type

Individual

UBI (state business ID)

601650273

City

Spokane, WA 99207

Bond and Insurance on File

Surety bond

$30,000 · Western Surety Co
Effective Jul 20, 2025 · Until Canceled

Liability insurance

$1,000,000 · AMGUARD INSURANCE COMPANY
Expires Jan 29, 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 653 days left before it expires on Aug 14, 2028. Check that date against your project timeline.

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

How This Record Compares in Spokane

Thaiss Plumbing & Sprinklers has held registration THAISPS055NM for 31.2 years. The median for the 1,902 active general contractors with a Spokane address is 4.5 years, and 532 of them have held their registration for 10 years or more, so this registration is among the longer-held ones. 362 of them registered in the last 12 months.

100% of these Spokane 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 14, 1995: Current registration THAISPS055NM took effect.
• Jul 20, 2025: $30,000 surety bond with Western Surety Co took effect.
• Oct 30, 2026: Our copy of the L&I record was taken.
• Jan 29, 2027: AMGUARD INSURANCE COMPANY liability policy on file expires.
• Aug 14, 2028: Registration expires unless renewed.

Other L&I Registrations Under UBI 601650273

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.

• THAISPS799O1 · Thaiss Plumbing & Sprinklers · ACTIVE · effective Sep 1, 2021, expires Sep 1, 2027

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 THAISPS055NM or UBI 601650273. The status there is the official one.
2. Check that the name on your bid or contract matches Thaiss Plumbing & Sprinklers exactly (a individual).
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 AMGUARD INSURANCE COMPANY 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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