Coster Construction
Verified against CSLB on · View on CSLB
License details
- License number
- 643600
- Status
- Active
- Classifications
- B · General Building
- Contractor bond
- $25,000
- Workers' comp
- Exempt
- License term on file
- April 29, 1992 – April 30, 2028
Business
- (562) 522 2020 (CSLB public record)
- 120 COASTLINE DRIVE, Seal Beach, CA 90740Orange County
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Frequently asked questions
Is Coster Construction licensed in California?
Yes. Coster Construction holds an active California state contractor license (CSLB #643600), 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 643600. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=643600
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 #643600 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=643600. 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.