Contractor License Proof

Tetra Tech Bas Inc

Licensed

Verified against CSLB on · View on CSLB

License details

License number
572017
Status
Active
Classifications
A · General EngineeringC-57 · Well DrillingHAZ · Hazardous Substance Removal Certification
Contractor bond
$25,000
Workers' comp
Covered
License term on file
June 28, 1989 – June 30, 2027

Business

  • (909) 860 7777 (CSLB public record)
  • 21700 COPLEY DR, Diamond Bar, CA 91765Los Angeles County

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Frequently asked questions

Is Tetra Tech Bas Inc licensed in California?

Yes. Tetra Tech Bas Inc holds an active California state contractor license (CSLB #572017), verified against the CSLB public record on June 17, 2026.

What is Tetra Tech Bas Inc's CSLB license number?

Tetra Tech Bas Inc's California contractor license number is 572017. 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 Tetra Tech Bas Inc licensed for?

Tetra Tech Bas Inc is classified under General Engineering (A), Well Drilling (C-57), and Hazardous Substance Removal Certification (HAZ) by the CSLB.

How do I verify Tetra Tech Bas Inc's license myself?

Look up license #572017 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 June 17, 2026.

Verify it yourself: How to verify a California contractor license · Look up #572017 on CSLB

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See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.