# U S T Testing Services Inc

U S T Testing Services Inc is a fire sprinkler company based in Concord, California. It holds an active CSLB C-16 Fire Protection Contractor license (No. 866797) from the California Contractors State License Board, verified against state records on October 24, 2026.

## California Contractors State License Board licenses

| License | Type | Expires | Status |
|---|---|---|---|
| 866797 | CSLB C-16 Fire Protection Contractor | November 30, 2027 | active |

## Contact and locations

- Phone: 925-288-8944
- Primary location: 1635 Challenge Drive, Concord, CA 94520 (Contra Costa County)

## Verify

Search 866797 at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx to confirm current status.

More companies in Concord: https://plumbregistry.com/fire-protection/california/concord/

_Source: California Contractors State License Board (CSLB) licensee records (https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx), retrieved October 24, 2026. Published by Plumb Registry._