C S S ENVIRONMENTAL SERVICES INC
California contractor license #780803 · Novato, Marin County
License
- License number
- 780803
- Status
- Clear
- Classifications
- A General Engineering Contractor
- HAZ Hazardous Substance Removal Certification
- Business type
- Corporation
- Issued
- Jun 26, 2000
- Expires
- Jun 30, 2028
- Workers' compensation
- Workers' Compensation Insurance — Star 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 Oct 2, 2026. Verify license #780803 on CSLB's License Check.
California public works
C S S ENVIRONMENTAL SERVICES INC appears on 12 public works projects registered with the California Department of Industrial Relations, for 10 awarding bodies between 2023 and 2026.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Mar 16, 2026 | Madera Gardens Complete StreetsPaving & streets | Town of Corte Madera | Subcontractor | $2,559,000 |
| Oct 9, 2025 | Bolinas Storm Drain Improvements Phase 2Sewer & wastewater | Town of Ross | Subcontractor | $887,518 |
| Jul 22, 2025 | Ridgecrest MPM 0.10, RDS 25-26Bridges & structures | Napa County Public Works | Subcontractor | $403,057 |
| Jun 10, 2025 | Saranap Trash Capture InstallationOther | Contra Costa County Public Works Department | Subcontractor | $1,087,230 |
| Feb 13, 2025 | Bellam Blvd Off Ramp ImprovementOther | County of Marin Department of Public Works | Subcontractor | $6,279,243 |
| Feb 6, 2025 | 2025 Pavement Preservation Program - FDRPaving & streets | County of Sonoma – SPI _ Sonoma Public Infrastructure | Subcontractor | $14,201,055 |
| Jan 14, 2025 | Redwood HS FASCD Building ProjectElectrical, low voltage & AV | Tamalpais Union High School District | Subcontractor | $39,091,268 |
| Oct 22, 2024 | Hearn Community Hub Phase 1Buildings & facilities | City of Santa Rosa | Subcontractor | $33,000,000 |
| Jun 25, 2024 | Bay Point Trash Capture InstallationOther | Contra Costa County Public Works Department | Subcontractor | $1,117,880 |
| Nov 2, 2023 | Tam Valley ModernizationBuildings & facilities | Mill Valley School Districts | Subcontractor | $3,302,354 |
| Nov 2, 2023 | Strawberry Point ModernizationBuildings & facilities | Mill Valley School Districts | Subcontractor | $2,933,858 |
| Jan 17, 2023 | Learning Resources Center Increment 2Buildings & facilities | Marin Community College District | Subcontractor | — |
Most recent 12 of 12. 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
- Mill Valley School Districts · 2 projects
- Contra Costa County Public Works Department · 2 projects
- City of Santa Rosa · 1 project
- Marin Community College District · 1 project
- County of Marin Department of Public Works · 1 project
- Town of Corte Madera · 1 project
- County of Sonoma – SPI _ Sonoma Public Infrastructure · 1 project
- Tamalpais Union High School District · 1 project
- Napa County Public Works · 1 project
- Town of Ross · 1 project
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