Builders FirstSource is the nation's largest supplier of building materials and building products for builders, contractors, and remodelers, providing trusted products, industry expertise, and support for new construction, remodeling, and home improvement projects. Our Spearfish, SD lumber yard serves customers throughout Saint Onge, Beulah, Lead, Whitewood and surrounding Dakotas Area. We provide framing lumber and other essential building products to support residential construction and remodeling projects. With reliable service, convenient pickup and delivery options, and knowledgeable local expertise, we're proud to be known as builders' first choice.
I have worked with Builders First, both personally and professionally for over five years. One of the most knowledgeable and accommodating company I’ve worked with. Tosh and Broch have years of knowledge to help out both the experts and the novice in the building world!
September 2025
Ryan P was helpful in getting my materials. We love working with BFS locations throughout the Black Hills including Spearfish for roofing, siding, and windows
October 2023
I went to Builders FirstSource to check on cedar dog eared boards for a fence. The prices were reasonable. Delivery was cheap and the quality was exceptional.
