Coster Construction
Verified against CSLB on · View on CSLB
License details
- License number
- 858796
- Status
- Active
- Classifications
- B · General Building
- Contractor bond
- $25,000
- Workers' comp
- Exempt
- License term on file
- May 14, 2005 – May 31, 2027
Business
- (925) 367 5298 (CSLB public record)
- PO BOX 1092, Bethel Island, CA 94511Contra Costa County
Are you Coster Construction? Claim this listing to manage it.
Claim this listingRequest a free quote
Tell us about your project and we'll connect you with licensed, verified California contractors.
Frequently asked questions
Is Coster Construction licensed in California?
Yes. Coster Construction holds an active California state contractor license (CSLB #858796), verified against the CSLB public record on June 17, 2026.
What is Coster Construction's CSLB license number?
Coster Construction's California contractor license number is 858796. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=858796
What kind of work is Coster Construction licensed for?
Coster Construction is classified under General Building (B) by the CSLB.
How do I verify Coster Construction's license myself?
Look up license #858796 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=858796. 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.