Coster Construction, B General Building Contractor in Bethel Island, CA
Coster Construction operating as a sole owner holds an active California contractor license (CSLB #858796), valid through May 31, 2027. First issued in 2005, the license has been on the CSLB roster for 21 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and an exempt workers' compensation status (no employees on payroll). The business is based in Bethel Island, in Contra Costa County, California.
- License Number
- 858796
- Issued
- May 14, 2005
- Status
- CLEAR
- Expires
- May 31, 2027
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- 101003346
- Effective
- Oct 17, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Jul 14, 2025
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Coster Construction licensed in California?
Yes. Coster Construction holds California Contractors State License Board license number 858796, which is active and in good standing. The license was first issued on May 14, 2005. It is valid through May 31, 2027.
What does Coster Construction specialize in?
Coster Construction is licensed for one CSLB classification: B General Building Contractor.
Where is Coster Construction headquartered?
Coster Construction is headquartered at Po Box 1092, Bethel Island, CA 94511, in Contra Costa County, California.
Does Coster Construction have an active surety bond on file with CSLB?
Yes. Coster Construction has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Coster Construction carry workers' compensation coverage?
Coster Construction reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Coster Construction's contractor license?
You can verify Coster Construction's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=858796.
- License issuedMay 14, 2005
- WC coverage startsJul 14, 2025
- Bond activeOct 17, 2025
- License expiresMay 31, 2027
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