Irwin Mark D
Verified against CSLB on · View on CSLB
License details
- License number
- 426790
- Status
- Active
- Classifications
- B · General BuildingC-46 · Solar
- Contractor bond
- $25,000
- Workers' comp
- Exempt
- License term on file
- August 20, 1982 – August 31, 2026
Business
- (818) 874 9170 (CSLB public record)
- 30503 PASSAGEWAY PLACE, Agoura Hills, CA 91301Los Angeles County
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Frequently asked questions
Is Irwin Mark D licensed in California?
Yes. Irwin Mark D holds an active California state contractor license (CSLB #426790), verified against the CSLB public record on June 17, 2026.
What is Irwin Mark D's CSLB license number?
Irwin Mark D's California contractor license number is 426790. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=426790
What kind of work is Irwin Mark D licensed for?
Irwin Mark D is classified under General Building (B) by the CSLB.
How do I verify Irwin Mark D's license myself?
Look up license #426790 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=426790. 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.