Keller Construction, B General Building Contractor in Windsor, CA
Keller Construction operating as a sole owner holds an active California contractor license (CSLB #563548), valid through Mar 31, 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 Windsor, in Sonoma County, California.
- License Number
- 563548
- Issued
- Apr 4, 1989
- Status
- CLEAR
- Expires
- Mar 31, 2027
- Entity
- Sole Owner
- Surety
- Atlantic Specialty Insurance Company
- Bond Number
- 800230514
- Effective
- Feb 1, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Mar 10, 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 Keller Construction licensed in California?
Yes. Keller Construction holds California Contractors State License Board license number 563548, which is active and in good standing. The license was first issued on April 4, 1989. It is valid through March 31, 2027.
What does Keller Construction specialize in?
Keller Construction is licensed for one CSLB classification: B General Building Contractor.
Where is Keller Construction headquartered?
Keller Construction is headquartered at 8645 Alden Lane, Windsor, CA 95492, in Sonoma County, California.
Does Keller Construction have an active surety bond on file with CSLB?
Yes. Keller Construction has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.
Does Keller Construction carry workers' compensation coverage?
Keller Construction reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Keller Construction's contractor license?
You can verify Keller Construction's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=563548.
- License issuedApr 4, 1989
- WC coverage startsMar 10, 2025
- Bond activeFeb 1, 2026
- License expiresMar 31, 2027
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