Contractor License Proof

Cornerstone Construction Company

License suspended

Verified against CSLB on · View on CSLB

CSLB reason on file: Contr Bond Susp

License details

License number
423718
Status
Suspended
Classifications
B · General BuildingC-10 · Electrical
Contractor bond
$25,000
Workers' comp
ExemptNo employees — not a red flag.
License term on file
June 15, 1982 – June 30, 2028

Business

  • (925) 339 9954 (CSLB public record)
  • 998 DANA CIRCLE, Livermore, CA 94550Alameda County

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Frequently asked questions

Is Cornerstone Construction Company licensed in California?

Cornerstone Construction Company's California contractor license (CSLB #423718) is currently suspended as of our June 17, 2026 check of the CSLB public record. CSLB reason on file: Contr Bond Susp. Always confirm the current status on CSLB before hiring.

What is Cornerstone Construction Company's CSLB license number?

Cornerstone Construction Company's California contractor license number is 423718. 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 Construction Company licensed for?

Cornerstone Construction Company is classified under General Building (B) and Electrical (C-10) by the CSLB.

How do I verify Cornerstone Construction Company's license myself?

Look up license #423718 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 #423718 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.