Contractor License Proof

Chien Ming Chu Chen

Licensed

Verified against CSLB on · View on CSLB

License details

License number
820540
Status
Active
Classifications
B · General BuildingC-10 · ElectricalC-36 · Plumbing
Contractor bond
$25,000
Workers' comp
ExemptNo employees — not a red flag.
License term on file
June 9, 2003 – June 30, 2027

Business

  • (626) 705 7227 (CSLB public record)
  • 20803 QUAIL RUN DRIVE, Diamond Bar, CA 91789Los Angeles County

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Frequently asked questions

Is Chien Ming Chu Chen licensed in California?

Yes. Chien Ming Chu Chen holds an active California state contractor license (CSLB #820540), verified against the CSLB public record on June 17, 2026.

What is Chien Ming Chu Chen's CSLB license number?

Chien Ming Chu Chen's California contractor license number is 820540. 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 Chien Ming Chu Chen licensed for?

Chien Ming Chu Chen is classified under General Building (B), Electrical (C-10), and Plumbing (C-36) by the CSLB.

How do I verify Chien Ming Chu Chen's license myself?

Look up license #820540 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 #820540 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.