Castelli Construction
Verified against CSLB on · View on CSLB
License details
- License number
- 428801
- Status
- Active
- Classifications
- B · General Building
- Contractor bond
- $25,000
- Workers' comp
- Exempt
- License term on file
- October 5, 1982 – September 30, 2026
Business
- (707) 363 6447 (CSLB public record)
- 840 BOWEN COURT, Sonoma, CA 95476Sonoma County
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Frequently asked questions
Is Castelli Construction licensed in California?
Yes. Castelli Construction holds an active California state contractor license (CSLB #428801), verified against the CSLB public record on June 17, 2026.
What is Castelli Construction's CSLB license number?
Castelli Construction's California contractor license number is 428801. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=428801
What kind of work is Castelli Construction licensed for?
Castelli Construction is classified under General Building (B) by the CSLB.
How do I verify Castelli Construction's license myself?
Look up license #428801 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=428801. 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.