Pro-Build is a privately held supplier of building products and services designed for professional builders and do-it-yourselfers in the United States market. The company operates via five companies: United Building Centers, Spenard Builders Supply, Lumbermens, Home Lumber Company and Dixieline Lumber Company. Together the operating groups offer lumber products, building materials, millwork services, tools, home d cor products and building plans. Pro-Build was founded in 1855 and is headquartered in Redmond, Wash. Its operating groups service customers in Washington, Oregon, California, Idaho, Montana, Wyoming, Utah, Arizona, New Mexico, Colorado, North Dakota, South Dakota, Nebraska, Kansas, Minnesota, Iowa, Missouri, Wisconsin, Illinois, Michigan, Indiana, Kentucky, Ohio and Alaska.