Building Materials


Cashway Lumber offers a huge assortment of the building materials you need to complete your next project, right here in Watertown, SD. Whether you are building a house, adding on or maybe just updating, we carry the lumber, drywall, siding, insulation, millwork, and any other building product to help you update your property! We also carry a full range of options and products for other projects like storage buildings or decks.

If your building needs a facelift, Cashway Lumber carries a wide selection of materials to update the appearance. Rely on our expertise to ensure your project is a success. You’ll find our reputable services and products to be unmatched, allowing your project to be as unique as our selection and services.



Cashway Lumber has tapped into both local and nationwide resources to aid our commercial customers succeed in completing their building projects.

Over the years, we have built a secure and a well-developed foundation of quality service workers, products and facilities, making us the top supplier of commercial building materials, commercial doors and hardware, windows and services centered on commercial building. Our range of products, parts, capabilities and product knowledge all unite to form well-built business relationships that enable our customers to reduce and simplify their processes and guarantee timely job completion.

We have built a sturdy reputation among our customers from a wide array of building materials, offering professional services and constantly going the extra mile to quickly find and deliver specialty items. General contractors, architects, and property maintenance experts all consider Cashway Lumber a valuable resource.