---
title: "O'Brien Mechanical Inc."
url: https://contractorlink.pro/o-brien
trades: [Plumbing]
city: San Francisco
region: CA
google_rating: 3.7
google_rating_count: 3
website: "http://obmi2.com/"
phone: "(415) 695-1800"
license: All rights reserved. Content from ContractorLink.
---

# O'Brien Mechanical Inc.

> A partner that delivers on your mechanical contracting needs

## About
O'Brien Mechanical, Inc. II is a family-owned, full-service Plumbing/Piping/HVAC contractor serving commercial projects in the Greater Bay Area. They offer design, construction, and fabrication for complex plumbing, piping, and HVAC systems. Established in 1970, the company employs union-affiliated tradespeople and administrative staff.

## Trades
- Plumbing

## Services
- Plumbing installation
- Piping installation
- HVAC systems design
- HVAC systems construction
- HVAC systems fabrication

## Location
San Francisco, CA, 94124

## Service Area
Serves within 30 minutes drive time of San Francisco, CA.

**Phone**: (415) 695-1800

## Google Reviews
3.7/5 stars from 3 Google reviews.
[View on Google Maps](https://maps.google.com/?cid=12421775779714282751&g_mp=CiVnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLkdldFBsYWNlEAIYBCAA)

- 5/5 — Anonymous
  Had a small emergency at home and O'Brien Mechanical Inc. came through fast. The guy who came was super polite and knew exactly what he was doing. Pricing was also reasonable compared to others I checked.
- 1/5 — Anonymous
- 5/5 — Anonymous

## FAQ
**Q: What areas does O'Brien Mechanical Inc. II serve for plumbing and HVAC services?**
A: O'Brien Mechanical Inc. II serves the Greater Bay Area, with headquarters in San Francisco, CA, handling commercial and residential projects including condominiums and community housing developments. Our professional staff delivers full design, construction, and fabrication for plumbing, piping, and HVAC systems throughout this region. We have successfully completed projects in locations such as San Francisco, San Rafael, and Palo Alto.

**Q: What types of plumbing and piping projects does O'Brien Mechanical Inc. II specialize in for residential clients?**
A: We specialize in full-service plumbing and piping installations for residential projects like multi-unit condominiums and community housing developments, such as the Cecil Williams Glide Community Housing in San Francisco and the Franklin Center Condominiums with 167 units. Our self-performing teams handle complex systems with innovative engineering and quality craftsmanship to ensure maximum efficiency and minimum waste. As a family-owned contractor since 1970, we focus on delivering on-time scheduling and excellent customer service.

**Q: How experienced is O'Brien Mechanical Inc. II in HVAC and mechanical contracting?**
A: Established in 1970 and operating as O'Brien Mechanical Inc. II since 1998, we have over 50 years of experience serving the Bay Area's most reputable building owners, architects, and engineers with plumbing, piping, and HVAC systems. Our team of over 90 union-affiliated employees generates more than $18 million in annual revenue, self-performing installations for commercial and residential projects including education facilities like Stanford University Library. We emphasize advanced technology and precise fabrication for complex systems.

**Q: What is the process for hiring O'Brien Mechanical Inc. II for a commercial plumbing project in San Francisco?**
A: Our process begins with consultation on your mechanical contracting needs, followed by full design and engineering using innovative techniques for plumbing, piping, and HVAC systems. We then handle construction, fabrication, and installation with our self-performing union tradespeople, ensuring on-time delivery and quality craftsmanship. From initial contact via phone at (415) 695-1800 or email at info@obmi2.com, we provide end-to-end service with a focus on efficiency and customer satisfaction.

**Q: Does O'Brien Mechanical Inc. II handle educational and healthcare plumbing installations in the Bay Area?**
A: Yes, we have extensive experience in plumbing and HVAC installations for educational facilities like the University of San Francisco Koret Health & Recreation Center and Stanford University Library, as well as healthcare and commercial projects. Our licensed team (License #754629) self-performs these complex systems with advanced technology and minimum waste. We have built a track record of trust with Bay Area institutions over half a century.

**Q: Are O'Brien Mechanical Inc. II's employees union-affiliated for plumbing services?**
A: Yes, our over 90 employees include union-affiliated tradespeople who specialize in plumbing, piping, and HVAC installations for commercial and residential projects. This ensures high-quality craftsmanship and adherence to industry standards in the Greater Bay Area. As a family-owned business since 1970, we prioritize professional staff for efficient, on-schedule project delivery.

## Online Presence
- Website: http://obmi2.com/
- Google Maps: https://maps.google.com/?cid=12421775779714282751&g_mp=CiVnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLkdldFBsYWNlEAIYBCAA

---
Profile: https://contractorlink.pro/o-brien