Contractor License Proof

Duncan Building

Licensed

Verified against CSLB on · View on CSLB

License details

License number
1031435
Status
Active
Classifications
B · General Building
Contractor bond
$25,000
Workers' comp
Exempt
License term on file
September 27, 2017 – September 30, 2027

Business

  • (909) 435 5630 (CSLB public record)
  • P O BOX 115, Forest Falls, CA 92339San Bernardino County

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Frequently asked questions

Is Duncan Building licensed in California?

Yes. Duncan Building holds an active California state contractor license (CSLB #1031435), verified against the CSLB public record on June 17, 2026.

What is Duncan Building's CSLB license number?

Duncan Building's California contractor license number is 1031435. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1031435

What kind of work is Duncan Building licensed for?

Duncan Building is classified under General Building (B) by the CSLB.

How do I verify Duncan Building's license myself?

Look up license #1031435 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1031435. 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.