CORNERSTONE CONSTRUCTION J C INC
California contractor license #917470 · Roseville, Placer County
License
- License number
- 917470
- Status
- Clear
- Classifications
- B General Building Contractor
- Business type
- Corporation
- Issued
- Jun 11, 2008
- Expires
- May 31, 2028
- Workers' compensation
- Workers' Compensation Insurance — Service American Indemnity Company
- Contractor's bond
- $25,000 — Atlantic Specialty Insurance Company
- DIR public works registration
- Registered through Jun 30, 2027
From the California Contractors State License Board (CSLB) public license file, last updated Sep 8, 2026. Verify license #917470 on CSLB's License Check.
California public works
CORNERSTONE CONSTRUCTION J C INC appears on 24 public works projects registered with the California Department of Industrial Relations, for 21 awarding bodies between 2017 and 2026.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| May 18, 2026 | EFA - 01A6665Storm drain & flood control | California Department of Transportation (Caltrans) | Subcontractor | $19,500,000 |
| Feb 18, 2026 | SLS NEW ADMIN BUILDINGBuildings & facilities | Gateway Unified School District | Subcontractor | $15,562,000 |
| Jul 22, 2025 | CHS New Music BuildingBuildings & facilities | Fremont Union High School District | Subcontractor | $48,198 |
| Jun 20, 2025 | Sol-80 WB Cordelia Truck Scales; ConstruOther | California Department of Transportation, Division of Design | Subcontractor | $152,000,000 |
| Dec 12, 2024 | Winding Creek ElementaryBuildings & facilities | Roseville City School District | Subcontractor | $49,873,006 |
| Sep 26, 2024 | New MOT OfficeBuildings & facilities | Upper Lake Unified School District | Subcontractor | $154,796 |
| Aug 15, 2024 | STATE OPERATIONS CENTER MODERNIZATION ANBuildings & facilities | Department of General Services | Subcontractor | $2,763,345 |
| May 14, 2024 | WD-2897 Sunol Valley Water TreatmentWater | San Francisco Public Utilities Commission | Subcontractor | $234,782,000 |
| Dec 21, 2023 | Shelter HomesOther | Department of General Services | Subcontractor | — |
| Oct 30, 2023 | Central Utility Plant ExpansionBuildings & facilities | UC Davis Health System - Facilities Design & Construction | Subcontractor | — |
| Oct 13, 2023 | Student Housing IIIOther | California State University Sacramento | Subcontractor | $56,096,310 |
| Jul 12, 2023 | DATA CENTER UPGRADESBuildings & facilities | Department of General Services | Subcontractor | — |
| Jun 12, 2023 | The CharlesOther | Keyes, L.P. | Subcontractor | — |
| May 1, 2023 | Water Pollution Control Master Plan UpdaBuildings & facilities | City of Sunnyvale | Subcontractor | — |
| May 1, 2023 | Yerba Buena Island Westside Bridges ProjBridges & structures | San Francisco County Transportation Authority | Subcontractor | — |
| Mar 15, 2023 | Sunnydale Block 3BOther | MOHCD | Subcontractor | — |
| Sep 15, 2022 | GATEWAYBuildings & facilities | University of CA-Berkeley | Subcontractor | — |
| Aug 22, 2022 | Tennyson HS Mod Phase IBuildings & facilities | Hayward USD | Subcontractor | — |
| Jun 13, 2022 | Hunters View Phase 3 InfrastructureOther | MOHCD | Subcontractor | — |
| May 26, 2022 | River Valve Outlet System RehabilitationOther | California Natural Resources Agency, Department of Water Resources, State of Cal | Subcontractor | — |
| Jan 2, 2022 | WRTHOther | Contra Costa County Public Works Department | Subcontractor | — |
| Sep 3, 2020 | CMAR - BHSCBuildings & facilities | County of Santa Clara, Facilities and Fleet | Subcontractor | — |
| Sep 18, 2019 | RWCF Progressive Design-Build - Phase 2BSewer & wastewater | City of Stockton Municipal Utilities Department | Subcontractor | — |
| Feb 12, 2017 | GGB Physical Suicide Deterrent System anOther | Golden Gate Bridge Highway, and Transportation District | Subcontractor | — |
Most recent 24 of 24. 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
- Department of General Services · 3 projects
- MOHCD · 2 projects
- Contra Costa County Public Works Department · 1 project
- San Francisco County Transportation Authority · 1 project
- University of CA-Berkeley · 1 project
- City of Stockton Municipal Utilities Department · 1 project
- California Natural Resources Agency, Department of Water Resources, State of Cal · 1 project
- Gateway Unified School District · 1 project
- Upper Lake Unified School District · 1 project
- Hayward USD · 1 project
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