COVID-19 and Business Continuity:
W.E. O’Neil Construction’s Business Continuity Statement regarding the Coronavirus Pandemic can be found here.


  • People
  • Customer Satisfaction
  • Partnership
  • Leadership
  • Financial Stability and Capacity


  • BIM/3D Modeling
  • Collaborative management  capabilities
  • Increasing Productivity and Accuracy


  • 80 Full Time LEED AP’s
  • 4 Million S.F. of LEED Projects
  • Steward of sustainable building practices


  • Training and Career Development
  • Employee Ownership
  • Collaborative Culture

Who We Are

Established in 1925, W.E. O’Neil Construction Company has flourished into an award winning and nationally ranked construction leader. 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 90 years of experience, the O’Neil name has been synonymous with quality professional construction services.

Latest Press Releases



16 March 2020

The W. E. O’Neil Family of Companies is monitoring the current Coronavirus/COVID-19 pandemic and...

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W.E. O’Neil Chicago Promotes Chad Holbrook to Director of Virtual Design and Construction

W.E. O’Neil Chicago Promotes Chad Holbrook to Director of Virtual Design and Construction

16 March 2020

W.E. O’Neil Construction is pleased to promote Chad Holbrook to Director of Virtual Design...

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Building in Chicago Could Save You Money… and Energy!

Building in Chicago Could Save You Money… and Energy!

03 March 2020

W.E. O’Neil’s The Reserve, an Autograph Collection Hotel project has become the first in...

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Client Testimonials

  • Martin Walsh, Vice President Facilities Development , Sonic Automotive

    "What made W.E. O’Neil professional is they have a strong project control system with good document management.There is no doubt that W.E. O’Neil was committed to the succes of our project. They pushed through obstacles, worked long hours and never gave up. They were very dedicated."

  • Joseph Martinez Project Manager, Harrah’s Entertainment

    The Rincon Tower Expansion was an overwhelming success on all facets. Fast track, escalating materials cost, design in progress or complete lack of design did not stop the momentum. Quality subcontractors helped in a big way. The focus on maintaining cost and schedule momentum was imperative on this project. All the hard work paid off, ahead of schedule and under budget. An amazing feat considering all the obstacles the project team had. Tight communication and a solid team effort made this a reality. Hats off to W.E. O’Neil!

  • Kathy Luna, Owner Boys & Girls Club of Metro Denver

    W.E. O’Neil’s building team was great! They were aware of our financial structure and focus on cost efficiencies without compromising value and quality in delivering an exceptional project.

  • Gerald Anderson, Facilities Project Mgr The Boeing Company.

    We would like to thank W.E. O’Neil Construction Company for an outstanding effort on this recently completed project located in the Pacific Corporate Towers Building. The project involved a very aggressive schedule to be completed in three months. As a result of a “total team” effort the project was completed on schedule and within cost without cutting corners or a reduction of the quality of workmanship

  • Blake Guyer, Project Manager, University of Colorado - Boulder

    What makes W.E. O'Neil professional is their great communication skills and ability to follow up on every detail. They kept us well-informed on every key project concern which was important to us. Their project meetings were run very well and everyone showed up prepared and organized. They were so easy to work with.

  • David B. Mainman, M.D. Desert Bloom Ob & Gyn, P.C.

    W. E. O'Neil built Desert Bloom Ob & Gyn's beautiful medical office on time and under budget. The building exceeded our high expectations. We have now been in the office almost one year and O'Neil's continued support has been a seamless extension of the customer service they extended us throughout construction. I enthusiastically recommend W.E. O'Neil to any company needing commercial construction.

  • Peter Palumbo Exton, LLC

    W. E. O'Neil consistently delivers as promised. They are a Contractor that has experience, trust, honesty, integrity, and bring a full commitment to the project. I am very impressed with the professionalism and analytical abilities of their staff. They always promote a Team effort with all members of the project including sub-contractors, engineers, and consultants. Their effort as well as their attention to detail, quality, schedule and budget has lead to very successful and projects. I would recommend them to anyone.

  • Sam C. Baxter, Director Human Services Department City of West Hollywood

    This is to express my appreciation for the outstanding Work of W. E. O’Neil Construction with regard to the new West Hollywood Library at 625 N. San Vicente Boulevard. This was a large and complex project, and your staff worked diligently to create a successful relationship among the architect, the contractor, and the City. The W. E. O’Neil team were devoted to the project, a pleasure to Work With, and skilled in their professional efforts. The team members went out of their way to resolve any problems or obstacles in a way that accomplished the City’s goals and maintained respect among all those working on the proj ect. Thank you for the high quality of your work, your cooperation, and your attention to detail. If the occasion should arise in the future, I look forward to working with W. E. O'Neil