Stacked wooden planks secured with a lumber tie.

Who We Are

serving thousands of clients in Upstate New York and beyond for over 25 years

Founded by Nathan Zimmermann in partnership with his father, Joe, Custom Millwork Supply has grown from a humble deck business into a thriving millwork and lumber company. Nathan has been running millwork through his shop since 2000, continually refining our processes and quickly earning a reputation for delivering moldings of exceptional quality. 

OUR CORE SPECIALIZATIONS

  • Custom Moldings: We can replicate any profile or create entirely new designs. With over existing 1,000 profiles to choose from and the ability to grind custom knives in-house, your vision is never limited.

  • S4S & Flat Stock: An extensive selection of hardwoods, softwoods, and tropical species, including precision-milled lumber ready for use, alongside an inventory of high-quality sheet goods.

  • CNC Services: Advanced routing and cutting available for complex project needs.

THE CUSTOM MILLWORK ADVANTAGE

  • Speed & Efficiency: Our state-of-the-art rip system and expanded storage allow us to handle large-scale projects with fast turn-around times.

  • Inventory on Demand: We stock hundreds of different profiles across various species, ensuring you have what you need for the field without the wait.

  • Expert Partners: As a certified Festool dealer, we provide our clients with access to the same high-standard tools we trust in our own shop.

Rooted in Tonawanda, NY and committed to quality, we take great pride in our work. We look forward to powering your projects across Upstate New York and beyond for years to come.