Think Tank Sanitation Inc

Think Tank Sanitation Inc appears as active in the Washington State Department of Labor & Industries records we downloaded on November 6, 2026, under construction contractor number THINKTS886BQ, expiring June 16, 2028. A $30,000 bond is on record. Insurance of $1,000,000 is on record. Confirm the current status with the state before you sign, because records change daily.

Official Record

License number

THINKTS886BQ

Type

Construction Contractor

Status

Active (when downloaded)

Effective

January 18, 2012 (about 14 years)

Expires

June 16, 2028

Business type

Corporation

Specialties

General

Bond

$30,000, Ohio Cas Ins Co

Liability insurance

$1,000,000, Sentry Insurance Company, through May 10, 2027

Source

Washington State Department of Labor & Industries, downloaded November 6, 2026

Contact

Trades

Plumbers · General Contractors

Location

Mattawa, WA 99349

Phone

(509) 932-4370

Map of Mattawa

Map © OpenStreetMap contributors. Shows the city, not the business address.

Before You Hire

Typical lead time is same day for emergencies, days for planned work. Ask:

• What is your license number, and which state or city issued it?
• Can you send a current certificate of liability insurance and proof of workers’ compensation?
• Will the contract list the scope, materials, price, start and finish dates and payment schedule?
• Who pulls the permits, and are they included in the price?
• Who will run the job day to day, and will you use subcontractors?

All 8 questions to ask →

Washington Rules

Washington requires contractors to register with the state. Threshold: Based on activity; no project-dollar floor. Read the Washington license summary.

• Ask for a flat price where possible, and confirm whether travel and call-out fees are included.
• Water heater and sewer work often needs a permit.