Corestone
Verified against CSLB on · View on CSLB
License details
- License number
- 1149918
- Status
- Active
- Classifications
- B · General Building
- Contractor bond
- $25,000
- Workers' comp
- Exempt
- License term on file
- February 3, 2026 – February 29, 2028
Business
- (707) 223 7919 (CSLB public record)
- 4016 FRACCHIA ROAD, Ukiah, CA 95482Mendocino County
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Frequently asked questions
Is Corestone licensed in California?
Yes. Corestone holds an active California state contractor license (CSLB #1149918), verified against the CSLB public record on June 17, 2026.
What is Corestone's CSLB license number?
Corestone's California contractor license number is 1149918. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1149918
What kind of work is Corestone licensed for?
Corestone is classified under General Building (B) by the CSLB.
How do I verify Corestone's license myself?
Look up license #1149918 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1149918. 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.