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Celebrating 100 Years

Celebrating a CENTURY of valuing people and building dreams!

This once-in-a-lifetime milestone is made possible by the commitment of our employee-owners and through relationships built over time with our clients and partners.

About this Office

Los Angeles, CA

Branching out from W.E. O’Neil’s roots in Chicago in 1985, the El Segundo office began its decades-long adventure in the aerospace industry. Today, W.E. O’Neil’s California region has grown to include four additional locations and is a prominent leader in multiple markets across the construction industry.

For nearly half a century, the California region has serviced clients across all of California. Rooted in our people and our commitment to quality, integrity, and responsiveness to our client’s needs, the California region is an industry leader with extensive experience in construction management and general contracting services.

We value our shareholders: their contributions, and their families. We are invested in them and, as such, attract some of the industry’s finest professionals. The California region has consistently ranked as one of the Top 100 Places to Work in Los Angeles by the Los Angeles Business Journal.

Reach Out

Los Angeles, CA

300 Continental Blvd, Suite 190
El Segundo, CA 90245

Office
Contacts

GENERAL INQUIRIES

Andy Herrera
Director of Project Development

Email Andy
310.643.7900

Information Request

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Representative Clients

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100% Employee Owned

Ever wanted to own a company?

Join our team and become a fellow employee-owner. Employee ownership is a different way of doing business: we are all 100% accountable and 100% invested. This creates a powerful dynamic that benefits our people, our clients, and our work.

Explore Careers
2025

Leonardo Awards - Marketing and Communications

Award of Excellence, Internal Communication | WEO Wire

Project Award | SMPS Los Angeles
2024

Leonardo Industry Award (LA Chapter)

Private Sector | West Edge

Project Award | SMPS Los Angeles
2022

Best Places to Work #16

Ranking | Los Angeles Business Journal (LABJ)
2021

Top General Contractor #19

Ranking | Los Angeles Business Journal (LABJ)
2021

Best Places to Work #4

Ranking | Los Angeles Business Journal (LABJ)
2020

Giants 400: Top Contractors #51

Ranking | Building Design + Construction
2020

Top 400 General Contractors #90

Ranking | Engineering News-Record (ENR)
2019

Los Angeles Top Builder #3

Ranking | The Real Deal
2016

Best Office Project

Gold Award | Historic Masonic Temple Renovation

Project Award | San Fernando Valley Business Journal