U S T Testing Services Inc
Verified against CSLB on · View on CSLB
License details
- License number
- 866797
- 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
- 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
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What to check next
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 August 4, 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. Look that number up with the CSLB "Check a License" tool to confirm its current status against the public record yourself.
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), General Building (B), Earthwork and Paving (C-12), Fire Protection (C-16), Warm-Air Heating, Ventilating and Air-Conditioning (C-20), Pipeline (C-34), Plumbing (C-36), Refrigeration (C-38), Boiler, Hot-Water Heating and Steam Fitting (C-4), Sanitation System (C-42), Sheet Metal (C-43), and Welding (C-60) 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 and compare the status, bond, and workers' compensation details against what's shown on this page. This page reflects the CSLB public record as of August 4, 2026.
Verify it yourself: How to verify a California contractor license · Look up #866797 on CSLB
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.