Here at Koopman we are known for our high quality building Materials. We have a wide selection of lumber and building materials in our Whitinsville, Uxbridge, Grafton, and Sharon locations. With only the finest forest products in stock from hand picked manufacturers, you can rest assured that every Koopman purchase is of the highest quality.

We also have showrooms for our window and door selections at our Whitinsville and Sharon locations, with a wide variety of brands and materials.

By participating in a nationwide group of lumber dealers with over $1 billion in buying power, we are able to compete with anyone in our market. We can provide virtually everything you need for your home. So stop by or call one of our Koopman Lumber locations today!




Koopman Lumber has the following materials in stock at our lumber yards everyday:

Koopman Lumber Featured Building Materials: Oak
Koopman Lumber Featured Building Materials: Poplar
Koopman Lumber Featured Building Materials: Clear Pine
Koopman Lumber Featured Building Materials: Boral
Koopman Lumber Featured Building Materials: Henry Blueskin House Wrap
Koopman Lumber Featured Building Materials: Atlantis Rail
Koopman Lumber Featured Building Materials: Premium Studs

Doors & Windows

Koopman Lumber has dedicated professionals who work exclusively with windows and doors. These are a very critical component of your home, and we can walk you through everything you need to know to get the best solution for your situation.

Featured Brands


Koopman Lumber has all the major brands represented, and has an array of materials available, including wood composite, capped composite, PVC, and variegated capped composite. CLICK HERE to see our blog for more information about the history of decking and today’s options. You can also get a free e-consult for those looking to build a new decking by clicking HERE.

Featured Brands


We buy direct from the mills through our lumber co-op, bringing you the best lumber and the best possible prices every day.


Koopman Lumber has dedicated professionals who deal exclusively with trim related projects including baseboard, casing, crown moulding, etc. For professional contractor delivery we keep our trim in a climate controlled facility through the winter, so the material is ready to install when it’s delivered.

Engineered Lumber

Koopman Lumber has been a leader in the specification of engineered lumber for over 10 years. As building codes change, and construction becomes more technical, trust the experts at Koopman Lumber to help you get the right product for the right application.

Professional Services

Outside Sales / DC / Credit / Training / Estimating – With approximately 30 full time outside sales professionals servicing the professional contractor every day, you can rest assured we have the full portfolio of services that any contractor needs. Our fleet of delivery vehicles are manned by professionals who understand your needs on the jobsite.

Kitchen Design Services

Our Kitchen and Bath design boasts two beautiful showrooms in our Whitinsville and Sharon locations, but also several mobile showrooms that will come straight to your home where one of our designers can do a 3D CAD layout of your dream kitchen or bathroom. We can design a space on any budget and deliver it on time and on budget.