Updated: Jul 18, 2026
Location
Address
2102 E 15th Ave, Spokane, WA, 99203
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A1 Radon Mitigation Construction
A1 Radon Mitigation LLC, 2102 E 15th Ave, Spokane, WA (Employee: Arnold Casilla) holds a Construction Contractor, Construction Contractor license according to the Washington license board.
Their BuildZoom score of 94 ranks in the top 24% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring A1 Radon Mitigation LLC, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
A1 Radon Mitigation LLC Services
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A1 Radon Mitigation LLC Contact Information
Phone Number: (509) 435-7756
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Address: 2102 E 15th Ave, Spokane, WA 99203
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A1 Radon Mitigation LLC License info
Verified License
| License # | A1RADRM744K2 |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Date Issued | 05-22-2026 |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for A1 Radon Mitigation LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
Insured
| Insurer | State National Ins Co Inc |
| Insured up to | $300,000 |
Bonded
| Bonded Agent | Nationwide Mutual Ins Co |
| Bond Value | $30,000 |
A1 Radon Mitigation LLC Employees
AC
Arnold Casilla
Partner/Member