Founded in 1925 in Chicago by the O'Neil family, W.E. O'Neil Construction has grown to a $600 million per year construction contractor with offices in Illinois, California, Arizona, Colorado and Tennessee. A fourth generation family and employee-owned company, our longevity can be attributed to our excellent staff of professionals, our integrity, our commitment to customer satisfaction, and our ability to embrace technology. With a combination of the financial strength of a large national contractor and the responsiveness of a small company, we bring the best of both worlds to our clients. Our experience covers virtually every commercial market sector as well as multi-family housing using a broad range of project delivery methods including design-build, design assist, construction management at risk and lump sum bid. Project sizes range from small remodels and tenant improvements to projects in excess of 1,000,000 square feet.