Precision-Engineered Decking & Railing Systems

At Interstate Building Supply in Cannon Falls, we believe your deck isn't just an addition to your house—it’s the foundation for your family’s summer barbecues, quiet morning coffees, and a lifetime of outdoor memories. Since 1980, we’ve been helping neighbors design outdoor spaces that balance timeless style with the rugged durability needed for Minnesota’s changing seasons.

Whether you are looking for the industry-leading aesthetics of TimberTech, the eco-friendly innovation of Trex composite decking, or the sleek, low-maintenance security of Westbury Railings, we are here to help you get the job done right. We curate only the best brands to ensure your deck looks as good in ten years as it does the day it’s finished.

We are proud to be the local choice for homeowners across the Twin Cities Metro—serving families in Inver Grove Heights, Burnsville, Bloomington, and Prior Lake—as well as the communities throughout Faribault, Rochester, Owatonna, and across the river in Prescott, WI.

From a sprawling multi-level entertainment space in Northfield or Hastings to a cozy, private retreat in Red Wing, Shoreview, or St. Louis Park, our expert team is dedicated to helping you find the perfect match. Whether you're in Cottage Grove or Arden Hills, we provide the high-performance materials you need for a deck that stands up to the elements and a look you’ll love for a lifetime.