O'BRIEN MECHANICAL INC II
California contractor license #754629 · San Francisco, San Francisco County
License
- License number
- 754629
- Status
- Clear
- Classifications
- C-4 Boiler, Hot-Water Heating and Steam Fitting Contractor
- C-36 Plumbing Contractor
- Business type
- Corporation
- Issued
- Sep 29, 1998
- Expires
- Sep 30, 2028
- Workers' compensation
- Workers' Compensation Insurance — Republic Indemnity Company Of California
- 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 Aug 20, 2026. Verify license #754629 on CSLB's License Check.
California public works
O'BRIEN MECHANICAL INC II appears on 15 public works projects registered with the California Department of Industrial Relations, for 6 awarding bodies between 2022 and 2025.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Dec 22, 2025 | 2970 16th St PSHOther | Mayor''s Office of Housing and Community Development | Subcontractor | $73,600,000 |
| Oct 22, 2025 | Stanyan Leaning CenterBuildings & facilities | Family Service Agency of San Francisco DBA Felton Institute | Subcontractor | $3,070,043 |
| Jun 23, 2025 | Sunnydale Block 7 affordable housingOther | Mayor''s Office of Housing and Community Development | Subcontractor | $75,400,000 |
| Jun 11, 2025 | Sunnydale Block 9 Affordable HousingOther | Mayor''s Office of Housing and Community Development | Subcontractor | $76,600,000 |
| Apr 29, 2025 | 850 Turk New ConstructionOther | Mayor''s Office of Housing and Community Development | Subcontractor | $57,904,563 |
| Jun 1, 2024 | 2550 Irving VerticalOther | MOHCD | Subcontractor | — |
| Apr 29, 2024 | 1633 Valencia new constructionOther | MOHCD | Subcontractor | — |
| Jan 3, 2024 | 3300 Mission new constructionOther | Mayor''s Office of Housing and Community Development | Subcontractor | $22,588,022 |
| Nov 1, 2023 | Hayward Senior CommonsOther | 603 A Street, L.P. | Subcontractor | — |
| Jun 12, 2023 | 730 StanyanOther | MOHCD | Subcontractor | — |
| May 15, 2023 | Hunters Point Shipyard Blocks 52&54 - HoOther | HPSY 52-54 LP | Subcontractor | — |
| Apr 3, 2023 | 4200 Geary new construction affordable hOther | MOHCD | Subcontractor | — |
| Nov 29, 2022 | Sunnydale Block 1 - Community CenterBuildings & facilities | SF Mayor''s Office of Housing and Community Development | Subcontractor | — |
| Aug 19, 2022 | The Kelsey Civic Center constructionBuildings & facilities | MOHCD | Subcontractor | — |
| Aug 19, 2022 | Shirley Chisholm Village Educator HousinOther | MOHCD | Subcontractor | — |
Most recent 15 of 15. 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
- MOHCD · 6 projects
- Mayor''s Office of Housing and Community Development · 5 projects
- Family Service Agency of San Francisco DBA Felton Institute · 1 project
- SF Mayor''s Office of Housing and Community Development · 1 project
- 603 A Street, L.P. · 1 project
- HPSY 52-54 LP · 1 project
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