Building Supply in Riverhead

9 Brothers Building Supply is a dependable source for Building Supply in Riverhead, serving contractors across Long Island, NYC, and the Tri-State Area, with homeowners welcome at every stage of their project. From a small patio refresh to a commercial site package, we carry masonry, hardscape, construction, and bulk materials to help keep the work moving.

Our Riverhead yard makes it easier to get the materials you need without running all over town. We help contractors coordinate material for phased jobs, and we help homeowners sort through product choices for patios, walls, drainage, masonry repairs, and more. Our team understands that a project can slow down when one supporting product is missing, so we look beyond the main material when building an order.

Types Of Building Supplies We Carry

We stock building supplies for outdoor projects, structural work, landscaping, and everyday jobsite needs. Our selection includes masonry supplies, brick, manufactured stone, mortar, adhesives, reinforcement, and drainage materials.

For hardscape work, we carry pavers, wall systems, coping, steps, jointing materials, base products, edge restraint, and outdoor living components. We also stock construction essentials such as vapor barriers, waterproofing materials, concrete accessories, vents, tools, and sitework supplies.

Need bulk material for grading, drainage, base preparation, or landscape work? Our Riverhead yard can help you line up the materials that support the finished surface, not just the product everyone sees.

Brand Options

We carry trusted brands across masonry, hardscape, construction, outdoor living, and landscape supply, including 4 Seasons, Laticrete, Sika, ADA Solutions, Inc., Smart Vent, MAX, Monarch, Stego, Husqvarna, W.R. Meadows, Alliance, Dutch Quality Stone, Eldorado Stone, StoneCraft, Kindred Outdoors & Surrounds, Espoma, Reed & Perrine, Delgado Stone, Cambridge, Glen-Gery, MSI, Nicolock, Techo-Bloc, Unilock, and Watsontown Brick.

Whether you are matching a brick, choosing a paver style, sourcing stone veneer, preparing a foundation, or finishing an outdoor kitchen, we can help you narrow down the materials that fit the scope of your job.

Where Building Supply Gets Used

Our customers use building supply materials throughout Riverhead for patios, walkways, driveways, retaining walls, outdoor kitchens, foundations, drainage improvements, stone veneer, brickwork, landscape upgrades, and commercial sitework.

Here is a real tip from the yard: order your base, bedding material, edge restraint, and jointing product at the same time as your pavers or wall block. A well-built base and proper drainage do more for the long-term performance of the project than rushing the installation to get the surface down quickly.

Pickup And Delivery Across Long Island

Pick up at our Riverhead yard, or visit Brentwood or East Setauket when one of those locations works better for your schedule. We can load you fast and help organize a mixed order for the job.

We also offer delivery across Long Island and NYC. Call ahead with your material list, access details, and where you want the load staged so our team can help make delivery day smoother.

Ready When You Are

Stop by Riverhead and talk to us, or call ahead and we will help stage your order for pickup or delivery.