The details on Thaiss Plumbing & Sprinklers
- WA L&I registration
- THAISPS799O1
- Registration checked
- September 14, 2026
- Registered since
- 2021
- Expires
- September 2027
- Contractor bond
- $6,000 · Western Surety Co
- Liability insurance
- $1,000,000 · AMGUARD INSURANCE COMPANY
- Insurance through
- January 2027
- Primary trade
- Plumbing
- L&I specialty
- JOURNEY LEVEL
- Registered principal
- THAISS, STEVEN FRANK · since 2021
- Service area
- Spokane
Something here wrong or out of date? The business can claim this listing and correct it.
Questions worth asking Thaiss Plumbing & Sprinklers
Does Thaiss Plumbing & Sprinklers hold a Washington contractor registration?
The number you want is THAISPS799O1 — Thaiss Plumbing & Sprinklers's Washington State L&I contractor registration, expiring September 2027. Last checked September 14, 2026. Washington's contractor lookup is free and open if you want to confirm it today. The same record shows a $6,000 contractor bond (Western Surety Co) and $1,000,000 of liability insurance with AMGUARD INSURANCE COMPANY through January 2027. Ask them to send the bond and insurance certificates over before the first day on site.
What areas does Thaiss Plumbing & Sprinklers serve?
They list Spokane. Confirm your address is inside that when you ring — coverage moves around, especially in winter.
Why is Thaiss Plumbing & Sprinklers listed here?
Thaiss Plumbing & Sprinklers is licensed and working in the Spokane area — that's the whole bar for a page here. That registration is checked against Washington's record, and the date of the check is on this page for you to weigh.