Cornerstone Environmental Contractors Inc

Concord · Contra Costa County · CA

VERIFIED

Bestopedia verdict

100 / 100 Bestopedia Trust Score

California’s contractor board lists Cornerstone Environmental Contractors Inc in CLEAR standing. A contractor bond is on file, and workers’ compensation coverage is current.

License standing
30 / 30
Years licensed
20 / 20
Contractor bond
20 / 20
Workers' comp
20 / 20
Business structure
10 / 10

How the Trust Score is calculated →

The verified record

CSLB license
#722253 verify on CSLB ↗
Classifications
A, C-10, D-21
Years licensed
30.2 years since 05/02/1996
Contractor bond
$25,000 AMERICAN CONTRACTORS INDEMNITY COMPANY
Workers’ comp
Current OAK RIVER INSURANCE COMPANY
Business type
Corporation
Qualifying principal
Eric Keith James, Randy Lewis Fowler, Robert William Mueller, Ronald Allen Harvey
Address of record
PO Box 5127, Concord, CA 94524

Frequently Asked Questions

Is Cornerstone Environmental Contractors Inc a licensed Electrical contractor in California?

Yes. Cornerstone Environmental Contractors Inc holds California CSLB contractor license #722253 with a C-10 (Electrical) classification. Current CSLB status: CLEAR.

What work is Cornerstone Environmental Contractors Inc licensed to perform?

License #722253 carries C-10 (Electrical), plus additional classifications: A, D21.

Is Cornerstone Environmental Contractors Inc bonded?

Yes. Cornerstone Environmental Contractors Inc carries contractor's bond #SC6300342 for $25,000 through AMERICAN CONTRACTORS INDEMNITY COMPANY.

Does Cornerstone Environmental Contractors Inc carry workers' compensation insurance?

Yes. Workers' compensation insurance is on file with OAK RIVER INSURANCE COMPANY, with a policy expiration of 03/29/2027.

How long has Cornerstone Environmental Contractors Inc held its contractor license?

License #722253 was originally issued on 05/02/1996, approximately 30 years ago (as of July 2026).

Where is Cornerstone Environmental Contractors Inc located?

Cornerstone Environmental Contractors Inc is based in Concord, Contra Costa County, CA 94524.