Contractor License Proof

Cornerstone Environmental Contractors Inc

Licensed

Verified against CSLB on · View on CSLB

License details

License number
722253
Status
Active
Classifications
A · General EngineeringC-10 · ElectricalD-21 · Machinery and Pumps
Contractor bond
$25,000
Workers' comp
Covered
License term on file
May 2, 1996 – May 31, 2028

Business

  • (925) 299 9225 (CSLB public record)
  • PO BOX 5127, Concord, CA 94524Contra Costa County

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Frequently asked questions

Is Cornerstone Environmental Contractors Inc licensed in California?

Yes. Cornerstone Environmental Contractors Inc holds an active California state contractor license (CSLB #722253), verified against the CSLB public record on June 17, 2026.

What is Cornerstone Environmental Contractors Inc's CSLB license number?

Cornerstone Environmental Contractors Inc's California contractor license number is 722253. 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 Cornerstone Environmental Contractors Inc licensed for?

Cornerstone Environmental Contractors Inc is classified under General Engineering (A), Electrical (C-10), and Machinery and Pumps (D-21) by the CSLB.

How do I verify Cornerstone Environmental Contractors Inc's license myself?

Look up license #722253 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 #722253 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.