Douglass Colony Group, Inc.

Founded in 1947 and headquartered in Commerce City, Colorado, Douglass Colony Group is one of the Rocky Mountain region’s largest full-service specialty contractors focused on commercial roofing, metals fabrication, waterproofing—and notably—solar energy solutions. The company operates from multiple locations across Colorado including Denver Metro (Commerce City HQ), Greeley, and Colorado Springs.
Douglass Colony’s solar division provides end-to-end renewable energy solutions tailored to commercial properties: from initial audits and system design through installation and ongoing maintenance. Their expertise spans roof-mounted photovoltaic arrays as well as ground-mount systems and custom solar canopies or awnings that integrate seamlessly with building architecture. They are recognized for tackling complex projects that other firms may avoid.
With over 400 employees—including many LEED-accredited professionals—the company emphasizes sustainability by integrating green roofing technologies with solar installations to help clients achieve ESG goals while reducing operational costs through federal incentives like the Investment Tax Credit. Their broad capabilities also cover advanced metalwork using FRAMECAD technology for rapid construction timelines.