Where contractors & do-it-yourselfers shop. Since 1968!

St. Catharines Building Supplies... your one-stop shop for all your construction, landscaping and design needs. We have proudly served Niagara builders, contractors and individuals with one of the largest indoor and outdoor displays of building and landscaping in the Niagara region. We're located just North of the QEW. Browse our product catalogue to find what's right for your needs. Check out our supplier's websites. If you don't see what you're looking for, let us know and we'll get it for you. Request a quote or contact us today.

Get started on your new home, cottage or garage, browse over 2,000 plans online!