Contractors’ Warehouse opened in 1983 to serve a growing need for home improvement products. Over the years, we’ve grown to become a California destination for building materials and supplies serving new construction, remodeling, and home improvements projects for contractors, tradesmen and DIY customers. With 14 store locations across California, we focus on providing a wide selection of in-stock products at great prices, to ensure you can start building today. We were previously known as HD Supply Home Improvement Solutions (HIS).