As the largest commercial roofing contractor plus metals, solar, waterproofing and FrameCad building design company in Colorado, Douglass Colony features employee expertise, materials and services that are unparalleled. The Douglass Colony Group has maintained a quality reputation in the Rocky Mountain region since 1947 through its commitment to holding the highest standards for safety, materials, and customer service. Come check us out as we have the first industrial LEED certified building in Commerce City, Colorado.