U S T Testing Services Inc
Verified against CSLB on · View on CSLB
License details
- License number
- 866797
- Status
- Active
- Classifications
- A · General EngineeringB · General BuildingC-12 · Earthwork and PavingC-16 · Fire ProtectionC-20 · Warm-Air Heating, Ventilating and Air-ConditioningC-34 · PipelineC-36 · PlumbingC-38 · RefrigerationC-4 · Boiler, Hot-Water Heating and Steam FittingC-42 · Sanitation SystemC-43 · Sheet MetalC-60 · Welding
- Contractor bond
- $25,000
- Workers' comp
- Covered
- License term on file
- November 1, 2005 – November 30, 2027
Business
- (925) 288 8944 (CSLB public record)
- 1635 CHALLENGE DRIVE, Concord, CA 94520Contra Costa County
Are you U S T Testing Services Inc? Claim this listing to manage it.
Claim this listingRequest a free quote
Tell us about your project and we'll connect you with licensed, verified California contractors.
Frequently asked questions
Is U S T Testing Services Inc licensed in California?
Yes. U S T Testing Services Inc holds an active California state contractor license (CSLB #866797), verified against the CSLB public record on June 17, 2026.
What is U S T Testing Services Inc's CSLB license number?
U S T Testing Services Inc's California contractor license number is 866797. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=866797
What kind of work is U S T Testing Services Inc licensed for?
U S T Testing Services Inc is classified under General Engineering (A) by the CSLB.
How do I verify U S T Testing Services Inc's license myself?
Look up license #866797 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=866797. This page reflects the CSLB public record as of June 17, 2026.
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.