Hills Flat Lumber Co., located in Grass Valley and Colfax, proudly serving the state of California. We showcase a large variety in lumber, hardware, building materials, appliances, recreation equipment, rentals and more. We carry major brands such as GE Appliances, Bertazzoni, Samsung, Hobie, Best ,Whirlpool, Bosch, Danby and more. Hobie Kayaks & Stand Up Paddle Boards. Authorized Stihl & Husqvarna Dealer. Largest selection of Carhartt Clothing in the region. Come visit our showroom today!