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O'Brien Mechanical, Inc. II Employee Directory

ConstructionCalifornia, United States11-50 Employees

O'Brien Mechanical, Inc. II is a San Francisco-based contractor specializing in plumbing and mechanical piping. Affiliated with Union Local 38, the company provides these services to general contractors and owners across the Bay Area. Its work spans both commercial projects and residential housing.

Founded in 1972, the privately held firm is based in San Francisco. Its Bay Area focus and union affiliation position it as a local provider of plumbing and mechanical piping services for both commercial and residential construction projects.

Find O'Brien Mechanical, Inc. II employees' phone numbers or email addresses

O'Brien Mechanical, Inc. II Global Highlights

Location
Employees

North America
15

Minus sign iconPlus sign icon
  • United States Of America
    15

O'Brien Mechanical, Inc. II's Leadership

  • Stylized image of a person
    J. O.
    President
    Phone icon
    Mobile Phone
  • Stylized image of a person
    M. F.
    Assistant Project Manager
    Phone icon
    Mobile Phone
  • Stylized image of a person
    S. S.
    Office And Accounting Manager
    Phone icon
    Mobile Phone
  • Stylized image of a person
    C. B.
    Principal
    Phone icon
    Mobile Phone
  • Stylized image of a person
    F. O.
    Field Foreman
    Phone icon
    Mobile Phone
  • Stylized image of a person
    B. B.
    Phone icon
    Mobile Phone
  • Stylized image of a person
    J. C.
    Phone icon
    Mobile Phone
  • Stylized image of a person
    J. A.
    Phone icon
    Mobile Phone

O'Brien Mechanical, Inc. II Employee Metrics

100%
50%
0%
2026
2025
  • Program & Project Management
  • Business
  • Civil Engineering & Construction
  • Accounting
  • Administrative
  • Other

Contact profiles from O'Brien Mechanical, Inc. II

Name
Title
Contact Info
Location
Last Update
  • Stylized image of a person
    J. O.
    President
    Phone icon
    Mobile Phone
    UNITED STATES
    Aug 04, 2023
  • Stylized image of a person
    M. F.
    Assistant Project Manager
    Phone icon
    Mobile Phone
    Bay
    Sep 11, 2025
  • Stylized image of a person
    S. S.
    Office And Accounting Manager
    Phone icon
    Mobile Phone
    UNITED STATES
    Aug 04, 2023
  • Stylized image of a person
    C. B.
    Principal
    Phone icon
    Mobile Phone
    Oct 17, 2024
  • Stylized image of a person
    F. O.
    Field Foreman
    Phone icon
    Mobile Phone
    United States
    Feb 18, 2026
  • Stylized image of a person
    B. B.
    Phone icon
    Mobile Phone
    UNITED STATES
    Mar 08, 2023
  • Stylized image of a person
    J. C.
    Phone icon
    Mobile Phone
    UNITED STATES
    Sep 05, 2024
  • Stylized image of a person
    J. A.
    Phone icon
    Mobile Phone
    UNITED STATES
    Mar 08, 2023

Frequently Asked Questions

What is O'Brien Mechanical, Inc. II known for?

Minus sign iconPlus sign iconO'Brien Mechanical, Inc. II was founded in 1972 operates in the Construction industry. The company's main headquarters is located in 1515 Galvez Avenue San Francisco, California 94124 United States; you can contact the main corporate office by phone at
+1-415-695-****
. Explore O'Brien Mechanical, Inc. II's company overview page for more information.

What is O'Brien Mechanical, Inc. II's most common email format?

Minus sign iconPlus sign iconO'Brien Mechanical, Inc. II employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more O'Brien Mechanical, Inc. II email formats with LeadIQ.

How many employees does O'Brien Mechanical, Inc. II have currently?

Minus sign iconPlus sign iconO'Brien Mechanical, Inc. II has approximately 15 employees as of May 2026. These team members are located across 1 continents, including North America.

Who are O'Brien Mechanical, Inc. II's key employees and leadership?

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As of May 2026, O'Brien Mechanical, Inc. II's key employees include:

  • President: J. O.
  • Assistant Project Manager: M. F.
  • Office And Accounting Manager: S. S.
  • Principal: C. B.
  • Field Foreman: F. O.

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