Castlerock Construction Company, B General Building Contractor in Novato, CA
Castlerock Construction Company operating as a sole owner holds an active California contractor license (CSLB #557667), valid through Nov 30, 2027. First issued in 1989, the license has been on the CSLB roster for 37 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Atlantic Specialty Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in Novato, in Marin County, California.
- License Number
- 557667
- Issued
- Feb 21, 1989
- Status
- CLEAR
- Expires
- Nov 30, 2027
- Entity
- Sole Owner
- Surety
- Atlantic Specialty Insurance Company
- Bond Number
- 800211973
- Effective
- Jan 4, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Oct 20, 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 Castlerock Construction Company licensed in California?
Yes. Castlerock Construction Company holds California Contractors State License Board license number 557667, which is active and in good standing. The license was first issued on February 21, 1989. It is valid through November 30, 2027.
What does Castlerock Construction Company specialize in?
Castlerock Construction Company is licensed for one CSLB classification: B General Building Contractor.
Where is Castlerock Construction Company headquartered?
Castlerock Construction Company is headquartered at 21 Lorraine Ct, Novato, CA 94947, in Marin County, California.
Does Castlerock Construction Company have an active surety bond on file with CSLB?
Yes. Castlerock Construction Company has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.
Does Castlerock Construction Company carry workers' compensation coverage?
Castlerock Construction Company reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Castlerock Construction Company's contractor license?
You can verify Castlerock Construction Company's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=557667.
- License issuedFeb 21, 1989
- WC coverage startsOct 20, 2025
- Bond activeJan 4, 2026
- License expiresNov 30, 2027
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