Koster Construction
Verified against CSLB on · View on CSLB
License details
- License number
- 922170
- Status
- Active
- Classifications
- A · General EngineeringB · General Building
- Contractor bond
- $25,000
- Workers' comp
- Exempt
- License term on file
- September 15, 2008 – September 30, 2026
Business
- (530) 913 3719 (CSLB public record)
- 10204 VALLEY DRIVE, Rough and Ready, CA 95975Nevada County
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Frequently asked questions
Is Koster Construction licensed in California?
Yes. Koster Construction holds an active California state contractor license (CSLB #922170), verified against the CSLB public record on June 17, 2026.
What is Koster Construction's CSLB license number?
Koster Construction's California contractor license number is 922170. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=922170
What kind of work is Koster Construction licensed for?
Koster Construction is classified under General Engineering (A) by the CSLB.
How do I verify Koster Construction's license myself?
Look up license #922170 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=922170. 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.