Williams A/C Service, C-20 HVAC Contractor in Rancho Cucamonga, CA
Williams A/C Service operating as a corporation holds California contractor license #1065744, which is currently expired (lapsed May 31, 2026) and not valid to contract until it is renewed. First issued in 2020, the license has been on the CSLB roster for 6 years. It carries a single CSLB classification: C-20 — HVAC Contractor. Records show an active surety bond on file with Atlantic Specialty Insurance Company and active workers' compensation coverage from Continental Casualty Company. The business is based in Rancho Cucamonga, in San Bernardino County, California.
- License Number
- 1065744
- Issued
- May 8, 2020
- Status
- CLEAR
- Expires
- May 31, 2026
- Entity
- Corporation
- Surety
- Atlantic Specialty Insurance Company
- Bond Number
- 800230298
- Effective
- Feb 20, 2026
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Continental Casualty Company
- Policy Number
- 8035734527
- Effective
- Dec 9, 2025
- Expires
- Dec 9, 2026
This contractor has a compliance issue in its public CSLB record:
- License expired
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Williams A/C Service licensed in California?
Williams A/C Service previously held California Contractors State License Board license number 1065744, but the license expired on May 31, 2026 and is not currently valid. It was first issued on May 8, 2020.
What does Williams A/C Service specialize in?
Williams A/C Service is licensed for one CSLB classification: C-20 HVAC Contractor.
Where is Williams A/C Service headquartered?
Williams A/C Service is headquartered at 11010 Arrow Rte Suite 107, Rancho Cucamonga, CA 91730, in San Bernardino County, California.
Does Williams A/C Service have an active surety bond on file with CSLB?
Yes. Williams A/C Service has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.
Does Williams A/C Service carry workers' compensation coverage?
Yes. Williams A/C Service carries active workers' compensation coverage through Continental Casualty Company.
How do I verify Williams A/C Service's contractor license?
You can verify Williams A/C Service's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1065744.
- License issuedMay 8, 2020
- WC coverage startsDec 9, 2025
- Bond activeFeb 20, 2026
- License expiredMay 31, 2026
- WC expiresDec 9, 2026
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