O'Brien Mechanical, Inc. II Employee Directory

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

O'Brien Mechanical, Inc. II was founded in 1972. O'Brien Mechanical, Inc. II operates in the Construction industry.

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

O'Brien Mechanical, Inc. II has approximately 15 employees.

ConstructionCalifornia, United States11-50 Employees

San Francisco based Union (Local 38) company that provides both plumbing and mechanical piping services for both General Contractors and Owners throughout the bay area.

We perform both commercial and residential housing.

Private company with over $15M annual revenues - since 1972.

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

O'Brien Mechanical, Inc. II Global Highlights

North America
16

United States Of America
16

O'Brien Mechanical, Inc. II's Leadership

J. O.
President
Mobile Phone
Email
M. F.
Assistant Project Manager
Mobile Phone
Email
S. S.
Office And Accounting Manager
Mobile Phone
Email
C. B.
Principal
Mobile Phone
Email
F. O.
Field Foreman
Mobile Phone
Email
B. B.
Mobile Phone
Email
J. C.
Mobile Phone
Email
J. A.
Mobile Phone
Email

O'Brien Mechanical, Inc. II Employee Metrics

100%

50%

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

J. O.
President
Mobile Phone
Email
UNITED STATES
Aug 04, 2023
M. F.
Assistant Project Manager
Mobile Phone
Email
Bay
Sep 11, 2025
S. S.
Office And Accounting Manager
Mobile Phone
Email
UNITED STATES
Aug 04, 2023
C. B.
Principal
Mobile Phone
Email
Oct 17, 2024
F. O.
Field Foreman
Mobile Phone
Email
United States
Oct 26, 2025
B. B.
Mobile Phone
Email
UNITED STATES
Mar 08, 2023
J. C.
Mobile Phone
Email
UNITED STATES
Sep 05, 2024
J. A.
Mobile Phone
Email
UNITED STATES
Mar 08, 2023

Frequently Asked Questions

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

O'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?

O'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?

O'Brien Mechanical, Inc. II has approximately 15 employees as of February 2026. These team members are located across 1 continents, including North America.

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

As of February 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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