Tri-State Building Supply is a comprehensive supplier of construction products and materials located in Dubuque, Iowa. Our target market includes builders, contractors, and homeowners. We aim to establish a strong local presence and become the go-to resource for construction materials and services, including shingles, windows, doors, siding, lumber, insulation, flooring, decking, fasteners, job material bids, estimating, design, job site measuring, and delivery services.