Warren Duncan Contracting
Verified against CSLB on · View on CSLB
License details
- License number
- 553327
- Classifications
- A · General EngineeringC-21 · Building Moving/DemolitionD-40 · Service Station Equipment and MaintenanceHAZ · Hazardous Substance Removal Certification
- 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
Are you Warren Duncan Contracting? Claim this listing to manage it.
Claim this listingRequest a free quote
Tell us about your project and we'll connect you with licensed, verified California contractors.
Something wrong on this page? Report incorrect information.
Other General Engineering contractors in San Bernardino
A E C Moreno Corporation
A · San Bernardino, CA
Verified August 4, 2026 · Bonded
V Ditch Solutions Inc
A · San Bernardino, CA
Verified August 4, 2026 · Bonded
San Luis Concrete Corp
A · San Bernardino, CA
Verified August 4, 2026 · Bonded
Environmental Contractors Transportation Inc
A · San Bernardino, CA
Verified August 4, 2026 · Bonded
Invert Construction Corp
A · San Bernardino, CA
Verified August 4, 2026 · Bonded
Broce Developments
A · San Bernardino, CA
Verified August 4, 2026 · Bonded
What to check next
Frequently asked questions
Is Warren Duncan Contracting licensed in California?
Yes. Warren Duncan Contracting holds an active California state contractor license (CSLB #553327), verified against the CSLB public record on August 4, 2026.
What is Warren Duncan Contracting's CSLB license number?
Warren Duncan Contracting's California contractor license number is 553327. 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 Warren Duncan Contracting licensed for?
Warren Duncan Contracting is classified under General Engineering (A), Building Moving/Demolition (C-21), Service Station Equipment and Maintenance (D-40), and Hazardous Substance Removal Certification (HAZ) by the CSLB.
How do I verify Warren Duncan Contracting's license myself?
Look up license #553327 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 August 4, 2026.
Verify it yourself: How to verify a California contractor license · Look up #553327 on CSLB
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.