Siers Construction
Verified against CSLB on · View on CSLB
License details
- License number
- 830470
- Status
- Active
- Classifications
- B · General BuildingD-52 · Window Coverings
- Contractor bond
- $25,000
- Workers' comp
- Exempt
- License term on file
- December 31, 2003 – December 31, 2027
Business
- (408) 569 9882 (CSLB public record)
- 5020 HESSEL RD, Sebastopol, CA 95472Sonoma County
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Frequently asked questions
Is Siers Construction licensed in California?
Yes. Siers Construction holds an active California state contractor license (CSLB #830470), verified against the CSLB public record on June 17, 2026.
What is Siers Construction's CSLB license number?
Siers Construction's California contractor license number is 830470. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=830470
What kind of work is Siers Construction licensed for?
Siers Construction is classified under General Building (B) by the CSLB.
How do I verify Siers Construction's license myself?
Look up license #830470 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=830470. 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.