Clark John A
Clark John A operating as a sole owner is licensed in California under CSLB number 1063307. The license was first issued in 2020, putting the business at 6 years on the active CSLB roster. It carries a single CSLB classification: C-61/D-21 — Machinery and Pumps 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 Windsor, in Sonoma County, California.
- License Number
- 1063307
- Issued
- Feb 13, 2020
- Status
- CLEAR
- Expires
- Feb 29, 2028
- Entity
- Sole Owner
- Surety
- Atlantic Specialty Insurance Company
- Bond Number
- 810025858
- Effective
- Jun 17, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Feb 1, 2026
- 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 Clark John A licensed in California?
Yes. Clark John A holds California Contractors State License Board license number 1063307. The license was first issued on February 13, 2020. It is valid through February 29, 2028.
What does Clark John A specialize in?
Clark John A is licensed for one CSLB classification: C-61/D-21 Machinery and Pumps Contractor.
Where is Clark John A headquartered?
Clark John A is headquartered at 9592 Vancouver Lane, Windsor, CA 95492, in Sonoma County, California.
Does Clark John A have an active surety bond on file with CSLB?
Yes. Clark John A has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.
Does Clark John A carry workers' compensation coverage?
Clark John A reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Clark John A's contractor license?
You can verify Clark John A's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1063307.
- License issuedFeb 13, 2020
- Bond activeJun 17, 2025
- WC coverage startsFeb 1, 2026
- License expiresFeb 29, 2028
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