MECHANICAL SYSTEM CONTRACTORS INC
California contractor license #878844 · San Diego, San Diego County
License
- License number
- 878844
- Status
- Clear
- Classifications
- C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor
- Business type
- Corporation
- Issued
- Jun 6, 2006
- Expires
- Jun 30, 2028
- Workers' compensation
- Workers' Compensation Insurance — Sentry Insurance Company
- Contractor's bond
- $25,000 — American Contractors Indemnity Company
- DIR public works registration
- Registered through Jun 30, 2029
From the California Contractors State License Board (CSLB) public license file, last updated Jun 15, 2026. Verify license #878844 on CSLB's License Check.
California public works
MECHANICAL SYSTEM CONTRACTORS INC appears on 13 public works projects registered with the California Department of Industrial Relations, for 8 awarding bodies between 2022 and 2026.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Aug 26, 2026 | CONVERGE DES - UCSD HEALTH CORE AND FINAOther | University of California, San Diego | Subcontractor | $5,077,283 |
| Feb 10, 2026 | TENANT IMPROVEMENTS SUITE 210Buildings & facilities | City of San Marcos | Subcontractor | $147,097 |
| Oct 22, 2025 | #202 MCEC WEST TOWER 2ND FLOOR OUTPATIENElectrical, low voltage & AV | University of California, San Diego | Subcontractor | $295,108 |
| Oct 11, 2025 | Fleet Science Center RenovationBuildings & facilities | Reuben H. Fleet Science Center | Subcontractor | $4,529,705 |
| Jul 11, 2025 | State of CA Probation and Parole OfficesHVAC & mechanical | Mell 45, LLC | Subcontractor | $2,572,174 |
| Apr 9, 2025 | LINK 3366 LMRI EXPANSION TIOther | University of California, San Diego | Subcontractor | $293,547 |
| Feb 27, 2025 | South County Career CenterPaving & streets | San Diego Workforce Partnership, Inc. | Subcontractor | $1,373,633 |
| Dec 9, 2024 | ELEMENT DERM XYLENE LAB EXHAUST MODIFICAOther | University of California, San Diego | Subcontractor | $471,389 |
| Jun 24, 2024 | SDCC - San Pasqual Room 700 RemodelBuildings & facilities | San Diego Center for Children | Subcontractor | $498,843 |
| May 8, 2024 | EDWARD JONES TIOther | University of California, San Diego | Subcontractor | — |
| Mar 18, 2024 | Genesee Plaza Suites 100-150Other | LIPT Genesee Avenue LLC | Subcontractor | — |
| Mar 15, 2024 | Genesee Plaza Suites 100-150Other | LIPT Genesee Avenue LLC | Subcontractor | — |
| May 31, 2022 | RIDA Chula Vista Convention CenterBuildings & facilities | Chula Vista Bayfront Facilities Financing Authority | Subcontractor | — |
Most recent 13 of 13. 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 · 5 projects
- LIPT Genesee Avenue LLC · 2 projects
- Chula Vista Bayfront Facilities Financing Authority · 1 project
- San Diego Center for Children · 1 project
- San Diego Workforce Partnership, Inc. · 1 project
- Reuben H. Fleet Science Center · 1 project
- City of San Marcos · 1 project
- Mell 45, LLC · 1 project
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