QUANTUM MECHANICAL OF SONOMA COUNTY INC
California contractor license #731245 · Santa Rosa, Sonoma County
License
- License number
- 731245
- Status
- Clear
- Classifications
- B General Building Contractor
- C-16 Fire Protection Contractor
- C-36 Plumbing Contractor
- Business type
- Corporation
- Issued
- Jan 10, 1997
- Expires
- Mar 31, 2027
- Workers' compensation
- Exempt
- Contractor's bond
- $25,000 — American Contractors Indemnity Company
- DIR public works registration
- Registered through Jun 30, 2027
From the California Contractors State License Board (CSLB) public license file, last updated Mar 19, 2025. Verify license #731245 on CSLB's License Check.
California public works
QUANTUM MECHANICAL OF SONOMA COUNTY INC appears on 2 public works projects registered with the California Department of Industrial Relations, for 2 awarding bodies between 2025 and 2026.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| May 26, 2026 | Glenwood ES Building D RenovationBuildings & facilities | San Rafael City Schools | Subcontractor | $5,012,365 |
| Mar 11, 2025 | JMES TK/K Bldgs, RR Mod & Portables ReloPlumbing & restrooms | Antioch Unified School District | Subcontractor | $14,544,697 |
Most recent 2 of 2. 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
- San Rafael City Schools · 1 project
- Antioch Unified School District · 1 project
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