Established in 1925, W.E. O'Neil Construction Company has flourished into an award winning and nationally ranked constructionleader. Our foundation is rooted in our people and our commitment to quality, integrity and responsiveness to our clients' needs. Through four generations of O'Neil family leadership and 90years of experience, the O'Neil name has been synonymous with quality professional construction services. W.E. O'Neil has completed numerous Science and Technology (S&T) buildings throughout the country, delivering.

W.E. O'Neil strives to exceed your expectations by consistently improving our people, products and services. Superior people deliver superior results, so every member of our extended work family is dedicated to the company core values of integrity, teamwork and excellence. We are relationship builders, and we aim to bring your vision to reality by understanding your needs through team visioning sessions, and meeting or exceeding your expectations through performance and results. Our goal is to gain your trust and confidence in O'Neil as your partner through an integrated team of individuals that develop creative and innovative solutions to tomorrow's challenges.

Since 1925, the construction industry has seen steady growth of the company that embraces people as its number one asset. Our award-winning family of construction companies, both employee and family owned, is recognized as an industry leader, bringing an impressive history of customers and projects from Connecticut to California and many points between. Moving from labor only to heavy machinery to state-of-the-art technology, through the Great Depression and, recently, the Great Recession, and having completed multiple projects exceeding 1,000,000 square feet in size, our focus still remains on our values which have remained constant for close to a century.

What's new?

As part of #WomenInConstruc tionWeek, we’re making donations on behalf of each of our female employees: over 100 STEM learning-focuse d kits are being donated to young girls at organizations near our offices across the country, including Girls 4 Science, Girls Incorporated of Metro Denver, UMOM New...

Posted on Mar 13, 2021  •  Facebook

With a lifelong passion for placemaking, Adrienne Tuck leads our permanent expansion into the Colorado Springs market. #WICWeek2021 #WomenInAEChttp://ow.ly/ 9oI950DVsVR

Posted on Mar 10, 2021  •  Facebook

5 Women Who Paved The Way | As part of #WomenInConstruc tionWeek and #WomensHistoryMo nth, we’re sharing a few little-known facts about 5 women who paved the way for females in the AEC industry! Check out their inspiring stories here: https://bit.ly/ 3kEK6u3#WICWeek2021 #WomenInAEC

Posted on Mar 10, 2021  •  Facebook

Did you know the industry average of women in construction is only 10-11%? We’re making strides at W.E. O’Neil to bring more women into our company and our industry, and we’re excited to celebrate #WomenInConstruc tionWeek! We’ll be sharing fun stories throughout the week, and are kicking things off...

Posted on Mar 09, 2021  •  Facebook

Curious about the state of Chicagoland's multifamily market? Join our PX Richard Davey on 3/11 as he discusses tren… https://t.co/PqgEevkMq1

Posted on Mar 03, 2021  •  Twitter

W.E. O’Neil of Arizona is thrilled to announce that the Splendido Villas Phase 3 project has won yet another award,… https://t.co/UTFiUBfxBa

Posted on Mar 03, 2021  •  Twitter

Proud to be working at Chicago's #PullmanNationalMonument, a 250-acre site honoring Black labor workers' role in th… https://t.co/AcVYTBla6G

Posted on Mar 02, 2021  •  Twitter

Closing out #BlackHistoryMonth spotlights w/ Herb Dawson, a Project Exec & Co-Chair of the Chicago office's D&I Com… https://t.co/nBKLf4ao6s

Posted on Feb 26, 2021  •  Twitter

Sharing more today about Trice Construction & its President/CEO, Stephanie Hickman. She acquired Trice after 25 yrs… https://t.co/AnmRlAHInN

Posted on Feb 25, 2021  •  Twitter

Our next #BlackHistoryMonth spotlight is on Deveney Jeffs, a Marketing Coordinator in our Denver office. Deveney pl… https://t.co/XuTDrVnYCw

Posted on Feb 24, 2021  •  Twitter

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