Hartmann Construction
Verified against CSLB on · View on CSLB
License details
- License number
- 660192
- Status
- Active
- Classifications
- B · General Building
- Contractor bond
- $25,000
- Workers' comp
- Exempt
- License term on file
- December 3, 1992 – December 31, 2026
Business
- (415) 497 7587 (CSLB public record)
- 22040 BONNESS RD, Sonoma, CA 95476Sonoma County
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Frequently asked questions
Is Hartmann Construction licensed in California?
Yes. Hartmann Construction holds an active California state contractor license (CSLB #660192), verified against the CSLB public record on June 17, 2026.
What is Hartmann Construction's CSLB license number?
Hartmann Construction's California contractor license number is 660192. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=660192
What kind of work is Hartmann Construction licensed for?
Hartmann Construction is classified under General Building (B) by the CSLB.
How do I verify Hartmann Construction's license myself?
Look up license #660192 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=660192. 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.