Introducing the newest addition to the Koopman Lumber family, nestled in the picturesque town of Dennis on Cape Cod, Massachusetts. Our brand-new store location is poised to serve you, bringing a wide range of top-quality products and expert advice to the residents and builders of this vibrant coastal community.

Whether you’re embarking on a kitchen or bathroom renovation project, looking to enhance your outdoor living space with premium decking materials, or in search of the perfect grill for your backyard gatherings, our dedicated departments have got you covered. Additionally, our drive-thru lumberyard offers the convenience and efficiency of loading and unloading materials without ever having to leave the comfort of your vehicle. 

With an unwavering commitment to exceptional customer service and a comprehensive selection of products, the Koopman Lumber store in Dennis is poised to become the go-to destination for your projects on the Cape!


243 Main St., 6A

Dennis, MA 02638

Phone: (508) 595-8801


Monday-Friday: 7am-5pm
Saturday: 8am-2pm
Sunday: CLOSED


Building Materials

Cape Cod residents will be happy to know that a new lumber yard is in town ready to take over. With a massive lumber yard, huge hardware department, and everything else you need to build, we’re your one and only stop for building materials in Dennis and the Cape!


Whichever tools you need for the job, we’ve got you covers. Koopman proudly stocks a massive variety of tools from the nation’s leading brands to ensure you get a good quality tool capable of standing up to whatever job you throw at it.

Windows & Doors

Time for a new look? Our Windows and Doors department has expert staff ready to meet any look and budget requirement, just try them! The next time you need to upgrade or replace windows or doors at your home or business, think Koopman!

Kitchen Design Center

Is it time to rethink your kitchen? Brainstorm with one of our experienced team members and get a kitchen so good you’d think you were dreaming! Make your kitchen a place to live, not just cook and clean with the experts at Koopman Lumber

Featured Brands

Kitchen Design Center


The Process

A step by step look into how our Kitchen Design Team takes your idea from dream to reality.

1. Measure the space or use existing plans for new construction.

2. Develop a plan to meet goals and budget.

3. Design the space to achieve aesthetic, functional, and budget goals.

4. Work with contractor of your choice to install. We can assist with selection as needed.

5. We coordinate with vendors and installers to bring the plan to reality.

6. You enjoy your kitchen for many years to come!

Store Manager - Joe Santos

We are thrilled to have Joe Santos as the manager for our Newest Koopman store. Joe will be the branch manager at the Dennis location, opening in May. Previously, Joe served as branch manager at Fairview Millwork in Yarmouth and department manager at Lowes, each for six years. During that time, he gained a wealth of knowledge and skills that he brings with him to Koopman Lumber. Outside of work, Joe enjoys working at his future in-laws’ horse farm, riding his Harley, playing golf, and spending time with his friends and family. We are excited to see everything he brings with him to make our Dennis location the next Koopman success story.

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