SIMPSON MECHANICAL INC
California contractor license #859044 · Escondido, San Diego County
License
- License number
- 859044
- Status
- Clear
- Classifications
- C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor
- C-36 Plumbing Contractor
- Business type
- Corporation
- Issued
- May 18, 2005
- Expires
- Apr 30, 2027
- Workers' compensation
- Workers' Compensation Insurance — Employers Preferred 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 16, 2026. Verify license #859044 on CSLB's License Check.
California public works
SIMPSON MECHANICAL INC appears on 12 public works projects registered with the California Department of Industrial Relations, 7 of them as the prime contractor, for 3 awarding bodies between 2025 and 2026. Projects it led total $693,318 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Sep 17, 2026 | Simpson Mechanical Inc. REQ01079955HVAC & mechanical | UC San Diego | Prime | $30,354 |
| Aug 20, 2026 | Hubbs Hall Room 3335 Sea Urchin LabBuildings & facilities | University of California, San Diego | Subcontractor | $360,600 |
| Jul 30, 2026 | PWO AWPF Chemical Piping RepairOther | City of Oceanside - Water Utilities Dept. | Prime | $193,982 |
| Jul 10, 2026 | Otterson Hall Dean's Suite RenovationsBuildings & facilities | University of California, San Diego | Subcontractor | $277,000 |
| Jun 16, 2026 | Simpson Mechanical Inc. REQ01045077HVAC & mechanical | UC San Diego | Prime | $86,464 |
| Jun 16, 2026 | Simpson Mechanical Inc. REQ01045090HVAC & mechanical | UC San Diego | Prime | $85,727 |
| Mar 23, 2026 | Hubbs Hall 2200 Tresguerres Lab TIBuildings & facilities | University of California, San Diego | Subcontractor | $624,209 |
| Mar 19, 2026 | 7TH COLLEGE TOWER 6 WEST WATER HEATERPlumbing & restrooms | University of California, San Diego | Prime | $95,225 |
| Mar 19, 2026 | 7TH COLLEGE - TOWER 3 WEST WATER HEATERPlumbing & restrooms | University of California, San Diego | Prime | $95,225 |
| Jan 21, 2026 | SSB 129-131 Dunseth Lab RenovationBuildings & facilities | University of California, San Diego | Subcontractor | $385,000 |
| Oct 27, 2025 | Visual Arts Building 2 Photo Room 218 TIBuildings & facilities | University of California, San Diego | Subcontractor | $260,500 |
| Mar 21, 2025 | 7TH COLLEGE TOWER 1 WEST WATER HEATER #3Plumbing & restrooms | University of California, San Diego | Prime | $106,342 |
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
- University of California, San Diego · 8 projects
- UC San Diego · 3 projects
- City of Oceanside - Water Utilities Dept. · 1 project
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