Cornerstone Environmental Contractors INC, A General Engineering Contractor in Concord, CA
Cornerstone Environmental Contractors INC operating as a corporation holds California contractor license #722253, which is currently expired (lapsed May 31, 2026) and not valid to contract until it is renewed. First issued in 1996, the license has been on the CSLB roster for 30 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 active workers' compensation coverage from Oak River Insurance Company. The business is based in Concord, in Contra Costa County, California.
- License Number
- 722253
- Issued
- May 2, 1996
- Status
- CLEAR
- Expires
- May 31, 2026
- Entity
- Corporation
- Surety
- American Contractors Indemnity Company
- Bond Number
- SC6300342
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Oak River Insurance Company
- Policy Number
- COWC771447
- Effective
- Mar 29, 2026
- Expires
- Mar 29, 2027
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 Cornerstone Environmental Contractors INC licensed in California?
Cornerstone Environmental Contractors INC previously held California Contractors State License Board license number 722253, but the license expired on May 31, 2026 and is not currently valid. It was first issued on May 2, 1996.
What does Cornerstone Environmental Contractors INC specialize in?
Cornerstone Environmental Contractors INC 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 Cornerstone Environmental Contractors INC headquartered?
Cornerstone Environmental Contractors INC is headquartered at P O Box 5127, Concord, CA 94524, in Contra Costa County, California.
Does Cornerstone Environmental Contractors INC have an active surety bond on file with CSLB?
Yes. Cornerstone Environmental Contractors INC has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Cornerstone Environmental Contractors INC carry workers' compensation coverage?
Yes. Cornerstone Environmental Contractors INC carries active workers' compensation coverage through Oak River Insurance Company.
How do I verify Cornerstone Environmental Contractors INC's contractor license?
You can verify Cornerstone Environmental Contractors INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=722253.
- License issuedMay 2, 1996
- Bond activeJan 1, 2023
- WC coverage startsMar 29, 2026
- License expiredMay 31, 2026
- WC expiresMar 29, 2027
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