National Building Supplies

The Largest Used Building Material Yard in Ontario

You can find us at 22903 Highway 48, just north of Ravenshoe Road; about 20 minutes north east of Newmarket. Here at National Building Supplies Ltd., we have pretty much a little bit of everything including the kitchen sink in our 5 buildings on 5 acres. We are also a Castle Building Centre which allows us to help you save money on all your building requirements. Bring in your material list for a package price. Along with salvage materials we also have many cuts of pine, construction lumber and pressure treated lumber, a full steel assortment, plus windows, doors, assorted fasteners and for something unique - Antique / Vintage.