Contractor License Proof

Duncan Warren Contracting

Licensed

Verified against CSLB on · View on CSLB

License details

License number
553327
Status
Active
Classifications
A · General EngineeringC-21 · Building Moving/DemolitionD-40 · Service Station Equipment and MaintenanceHAZ · Hazardous Substance Removal Certification
Contractor bond
$25,000
Workers' comp
Covered
License term on file
January 10, 1989 – January 31, 2027

Business

  • (909) 880 8501 (CSLB public record)
  • 19867 CAJON BLVD, San Bernardino, CA 92407San Bernardino County

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Frequently asked questions

Is Duncan Warren Contracting licensed in California?

Yes. Duncan Warren Contracting holds an active California state contractor license (CSLB #553327), verified against the CSLB public record on June 17, 2026.

What is Duncan Warren Contracting's CSLB license number?

Duncan Warren Contracting's California contractor license number is 553327. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=553327

What kind of work is Duncan Warren Contracting licensed for?

Duncan Warren Contracting is classified under General Engineering (A) by the CSLB.

How do I verify Duncan Warren Contracting's license myself?

Look up license #553327 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=553327. This page reflects the CSLB public record as of June 17, 2026.

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