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Interstate Lumber Design Center

Design Center

In celebration of over 90 years in the Architectural Millwork business, Interstate + Lakeland Lumber has opened the doors to a state-of-the-art custom showroom built exactly where the original wood working shop began in 1922. The unique post and beam renovation blends seamlessly with the original space to provide a gallery-style setting for premium windows and doors, hardware and our specialty custom millwork

Our knowledgeable staff is on hand to answer any of your questions and to help provide solutions to any and all of your building challenges. Come sit and relax and discuss ideas away from the hustle and bustle of a job site.

“Drawing inspiration from the window display cases of Manhattan's jewelry stores, as well as artifacts displayed in New York's American Museum of Natural History, Sheldon Kahan has created a museum and gallery of his own.”

Founding members of Interstate Lumber

Founder Leon Kahan, pictured second from the right


Take a virtual tour through our award-winning showroom from the comfort of your home or office.

WEBLINK (click to view or copy & paste to add/share the tour):

To learn more call (203) 413-5256 or email: Design Center

Windows & Doors

Interstate + Lakeland Lumber offers the finest selection of windows from leading manufacturers displayed in a unique way. Windows are mounted on wrought iron poles which swivel allowing you to spin the window and examine the interior and exterior style. Doors are mounted in similar sturdy frames. Both windows and doors are fully functional to demonstrate such features as tilt wash, locking mechanisms, etc. Many leading options are also on display such as glass options, divided light, grille styles, cladding colors, hardware finishes and options, and much more. Our knowledgeable staff is on hand to discuss your latest projects.

Design Center Windows Offering

Visit us and see the latest offerings from:

  • Andersen Windows and Doors
  • Marvin Windows and Doors
  • JELD-WEN Windows and Doors
  • Sierra Pacific Windows and doors
  • Kolbe & Kolbe Windows and Doors
  • Belisle Windows and Doors
  • Prodomo Windows and Doors
Other Specialty Products available
  • Centor Windows and doors
  • Lacantina Doors
  • Folding Sliding Doors

The River Room / Custom Millwork

Custom moulding and millwork is a great addition to any interior or exterior space, as it pulls the entire home’s design together. That’s why the Greenwich Design Center’s “River Room” was conceived, designed, and built to showcase a variety of the custom architectural millwork that Interstate has created for over 100 years. This room is graced by rich coffered ceilings with dentil block details, custom run IL Greenwich CollectionTM profiles, a variety of panel work, architectural elements, curved / radius work, and fluted pilasters. Whether it’s in wood, MDF or flexible PVC, the talented craftsmen at Interstate + Lakeland Lumber will ensure that your design vision is achieved. Our design center is perfect for customers that are currently designing a home or planning an upcoming construction project. From sturdy and beautiful doors to new and replacement windows, our showroom has everything you need. With locations throughout Greenwich, CT, we're proud to serve clients across Stamford, Westport, Norwalk, Fairfield, New Canaan, CT; as well as surrounding Scarsdale, Rye, Port Chester, and Shrub Oak, NY communities. To get inspired and "dream up" new ideas with us, contact our design center today.

Visit Our Design Center in Westport, CT

Interstate + Lakeland is happy to announce that we’ve opened a new design center in Westport, CT to provide residents of Westport with windows, doors, custom millwork, and more. Create your own oasis in your home by choosing quality windows, doors, hardware, millwork, and more. Stop by 800 Post Rd E in Westport, CT to discover your own design style, or to further enrich your current style! Our team cannot wait to assist you. Contact our team today for more information on our new design center or schedule a tour! 

River Room Custom Millwork

Visit Custom Millwork Section for more examples of our work.

River Room Photos

Interstate Lumber

Connect with us:


Greenwich Store
184 South Water Street
Greenwich, CT 06830

Tel: (203) 531-8050
Fax: (203) 531-1373
Location Manager

247 Mill Street
Greenwich, CT 06830

Tel: (203) 531-8885
Fax: (203) 531-6318
Location Manager

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