Thorn Construction
Lafayette · Contra Costa County · CA
Verified
Bestopedia verdict
California’s contractor board lists Thorn Construction with a license standing of CLEAR. A contractor bond is on file, and workers’ compensation coverage is current.
- License standing
- 25 / 25
- Clean record
- 15 / 15
- Track record
- 23.7 / 30
- License continuity
- 10 / 10
- Workers' comp
- 12 / 12
- Contractor bond
- 8 / 8
The verified record
- CSLB license
- #548798 verify on CSLB ↗
- Classifications
- A, B, D-49
- Years licensed
- 37.6 years since 11/18/1988
- Contractor bond
- $25,000 American Contractors Indemnity Company
- Workers’ comp
- Current State Compensation Insurance Fund
- Business type
- Sole Owner
- Qualifying principal
- William R Thorn
- Address of record
- 1242 Upper Happy Valley Rd, Lafayette, CA 94549
Frequently Asked Questions
Is Thorn Construction a licensed General Contractor contractor in California?
Yes. Thorn Construction holds California CSLB contractor license #548798 with a B (General Building) classification. Current CSLB status: CLEAR (as of July 2026).
What work is Thorn Construction licensed to perform?
Thorn Construction is licensed for B (General Building), plus additional classifications: A, D-49.
Is Thorn Construction bonded?
Yes. Thorn Construction carries contractor's bond #SC662624 for $25,000 through American Contractors Indemnity Company.
Does Thorn Construction carry workers' compensation insurance?
Yes. Thorn Construction has workers' compensation insurance on file with State Compensation Insurance Fund, with a policy expiration of 04/01/2027.
How long has Thorn Construction held its contractor license?
Thorn Construction has held California contractor license #548798 since 11/18/1988, approximately 38 years (as of July 2026).
Where is Thorn Construction located?
Thorn Construction is based in Lafayette, Contra Costa County, CA 94549.