W E O'Neil Construction CO

Fourth-generation Chicago general contractor, founded in 1925.

General contracting and construction management · Since 1925

W.E. O’Neil Construction’s national headquarters at 1245 W Washington Blvd, a former flower factory it transformed into its office in 2012. Founded in Chicago in 1925, the firm is now 100% employee-owned and operates from offices in Illinois, Arizona, California, Colorado, Tennessee, and Texas.

Part of W.E. O’Neil Construction

From weoneil.com — verified 2026-05-19. Check the site for current hours and details.