Castle Rock Building Supply has been serving Cowlitz and southern Lewis counties since the 1930s. As a family-owned and operated business, we pride ourselves on providing excellent customer service and trusted brands in home improvement. We cater to builders, contractors, and homeowners alike, offering a wide range of building materials, including lumber, plywood, sheet goods, siding, drywall, insulation, fasteners, hardware, brackets, power tools, hand tools, windows, doors, concrete, and cement products. Our knowledgeable staff is always available to help you find what you need for your building project, and we offer delivery services for lumber and other materials. Whether you're a seasoned pro or a DIY enthusiast, we've got you covered.
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