The details on A1 Radon Mitigation LLC
- WA L&I registration
- A1RADRM744K2
- Registration checked
- July 27, 2026
- Registered since
- 2026
- Expires
- May 2028
- Contractor bond
- $30,000 · Nationwide Mutual Ins Co
- Liability insurance
- $300,000 · State National Ins Co Inc
- Insurance through
- May 2027
- Primary trade
- General Contractor
- L&I specialty
- GENERAL
- Registered principal
- CASILLA, ARNOLD · since 2026
- Service area
- Spokane
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Questions worth asking A1 Radon Mitigation LLC
Is A1 Radon Mitigation LLC licensed in Washington?
A1 Radon Mitigation LLC holds Washington State (L&I) contractor registration A1RADRM744K2, expiring May 2028. We verified it against the state record on July 27, 2026, and you can check the same number on Washington's contractor lookup in about a minute. L&I also lists a $30,000 contractor bond (Nationwide Mutual Ins Co) and $300,000 of liability insurance with State National Ins Co Inc through May 2027. Ask for proof of bond and current insurance before work starts.
What areas does A1 Radon Mitigation LLC serve?
Spokane. Service areas change, so confirm they cover your address when you call.
How did A1 Radon Mitigation LLC end up on this page?
A1 Radon Mitigation LLC is licensed and working in the Spokane area — that's the whole bar for a page here. We check that registration against the state's own record and date the check on this page, so you can see for yourself how current it is.