W.E. O'Neil Construction, founded in 1925, is a general contracting firm employing the best people to work with the best customers in the industry. We have established a position of leadership in our industry because of the talents of our people, strong experience, and an excellent reputation.
A national firm ranked by ENR as a “Top 75” General Contracting companies, we believe our success is a result of our commitment to company values. We are based in Chicago, Colorado (Denver & Colorado Springs), California (Los Angeles, Orange County San Diego, & Pleasanton), Arizona (Phoenix & Tucson), Texan (Austin), and Tennessee (Nashville).