Contractor License Proof

Duke Plumbing Inc

Licensed

Verified against CSLB on · View on CSLB

License details

License number
430513
Status
Active
Classifications
A · General EngineeringC-36 · Plumbing
Contractor bond
$25,000
Workers' comp
Covered
License term on file
October 25, 1982 – January 31, 2028

Business

  • (909) 981 8200 (CSLB public record)
  • 1630 W 9TH ST, Upland, CA 91786San Bernardino County

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Frequently asked questions

Is Duke Plumbing Inc licensed in California?

Yes. Duke Plumbing Inc holds an active California state contractor license (CSLB #430513), verified against the CSLB public record on June 17, 2026.

What is Duke Plumbing Inc's CSLB license number?

Duke Plumbing Inc's California contractor license number is 430513. 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 Duke Plumbing Inc licensed for?

Duke Plumbing Inc is classified under General Engineering (A) and Plumbing (C-36) by the CSLB.

How do I verify Duke Plumbing Inc's license myself?

Look up license #430513 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 #430513 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.