Ac3, A General Engineering Contractor in Lafayette, CA
Ac3 operating as a corporation holds California contractor license #647234, which is currently expired (lapsed Jun 30, 2026) and not valid to contract until it is renewed. First issued in 1992, the license has been on the CSLB roster for 34 years. It carries 3 CSLB classifications: A General Engineering Contractor, C-10 Electrical Contractor, and C-61/D-21 Machinery and Pumps Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and a previously-filed workers' compensation policy with Starnet Insurance Company that is no longer active. The business is based in Lafayette, in Contra Costa County, California.
- License Number
- 647234
- Issued
- Jun 9, 1992
- Status
- CLEAR
- Expires
- Jun 30, 2026
- Entity
- Corporation
- Surety
- American Contractors Indemnity Company
- Bond Number
- SC699207
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Starnet Insurance Company
- Policy Number
- KRM156816667
- Effective
- Aug 1, 2025
- Expires
- Aug 1, 2026
This contractor has a compliance issue in its public CSLB record:
- License expired
- No active workers' comp on file
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Ac3 licensed in California?
Ac3 previously held California Contractors State License Board license number 647234, but the license expired on June 30, 2026 and is not currently valid. It was first issued on June 9, 1992.
What does Ac3 specialize in?
Ac3 is licensed for 3 CSLB classifications: A General Engineering Contractor, C-10 Electrical Contractor, and C-61/D-21 Machinery and Pumps Contractor.
Where is Ac3 headquartered?
Ac3 is headquartered at 3469 Mt Diablo Blvd, Lafayette, CA 94549, in Contra Costa County, California.
Does Ac3 have an active surety bond on file with CSLB?
Yes. Ac3 has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Ac3 carry workers' compensation coverage?
Ac3 has a previously-filed workers' compensation policy with Starnet Insurance Company that is no longer active.
How do I verify Ac3's contractor license?
You can verify Ac3's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=647234.
- License issuedJun 9, 1992
- Bond activeJan 1, 2023
- WC coverage startsAug 1, 2025
- License expiredJun 30, 2026
- WC expiredAug 1, 2026
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