CORNERSTONE ENVIRONMENTAL CONTRACTORS INC
California contractor license #722253 · Concord, Contra Costa County
License
- License number
- 722253
- Status
- Clear
- Classifications
- A General Engineering Contractor
- C-10 Electrical Contractor
- C-61/D-21 Machinery and Pumps
- HAZ Hazardous Substance Removal Certification
- Business type
- Corporation
- Issued
- May 2, 1996
- Expires
- May 31, 2028
- Workers' compensation
- Workers' Compensation Insurance — Oak River Insurance Company
- Contractor's bond
- $25,000 — American Contractors Indemnity Company
- DIR public works registration
- Registered through Jun 30, 2028
From the California Contractors State License Board (CSLB) public license file, last updated Sep 17, 2026. Verify license #722253 on CSLB's License Check.
California public works
CORNERSTONE ENVIRONMENTAL CONTRACTORS INC appears on 11 public works projects registered with the California Department of Industrial Relations, 9 of them as the prime contractor, for 7 awarding bodies between 2023 and 2026. Projects it led total $392,412 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Aug 11, 2026 | EMERGENCY REPLACEMENT/REPAIR - JOHN MUIRElectrical, low voltage & AV | Merced City School DIstrict - Maintenance/Operations/Grounds | Prime | $5,612 |
| Mar 10, 2026 | Airport Undenground Tank RemovalOther | City of California City | Prime | $187,861 |
| Jan 1, 2026 | Soquel Elem School Field and AmphitheateParks, landscape & fields | Soquel Union Elementary School District | Prime | $16,400 |
| Jan 1, 2026 | Main St Elem Field & AmphitheatreParks, landscape & fields | Soquel Union Elementary School District | Prime | $16,400 |
| Jan 1, 2026 | Santa Cruz Gardens Elem Field & Amp.Parks, landscape & fields | Soquel Union Elementary School District | Prime | $16,400 |
| Oct 16, 2025 | REPAIR/IRRIGATION CONTROLS/RIVERA ELE.Parks, landscape & fields | Merced City School DIstrict - Maintenance/Operations/Grounds | Prime | $4,820 |
| Aug 13, 2025 | RETROFIT PUMP - WILCOX FIELDParks, landscape & fields | Santa Clara Unified School District | Prime | $19,847 |
| Jul 15, 2025 | REPLACE & REPAIR IRRIGATION PUMPParks, landscape & fields | Merced City School DIstrict - Maintenance/Operations/Grounds | Prime | $46,114 |
| Sep 26, 2024 | Railhead Park Pump ReplacementParks, landscape & fields | Auburn Area Recreation and Park District | Prime | $78,957 |
| Apr 1, 2024 | OM-24-080 ON-CALL PARKS PUMP REPAIRSParks, landscape & fields | CITY OF STOCKTON - PUBLIC WORKS | Subcontractor | — |
| Nov 17, 2023 | FMW Demolition and RemediationDemolition & site work | City of Emeryville | Subcontractor | — |
Most recent 11 of 11. Contract amounts are the whole project's, as the awarding body reported them to DIR (reported since July 2024); a role is "Prime" when the awarding body registered the contractor on the project.
Awarding bodies it works for most
- Merced City School DIstrict - Maintenance/Operations/Grounds · 3 projects
- Soquel Union Elementary School District · 3 projects
- City of Emeryville · 1 project
- Santa Clara Unified School District · 1 project
- Auburn Area Recreation and Park District · 1 project
- CITY OF STOCKTON - PUBLIC WORKS · 1 project
- City of California City · 1 project
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