Building Supply in Long Island, and New York City

If you are tackling a patio, a new front walk, or a full renovation, 9 Brothers Building Supply is your reliable yard for quality materials across Long Island and New York City. We stock what homeowners and contractors actually use, and we keep it moving so your job keeps moving. Our Brentwood, East Setauket, and Riverhead yards serve the whole region with pickup and delivery. If you searched for a building supply store or wholesale building supply, you are in the right place.

What We Carry

From ground prep to the finishing touches, we carry the materials that make projects look sharp and last:

• Manufactured Stone, Natural Stone, Hardscape, Construction, Masonry.

• Pavers, slabs, wall systems, caps, steps, and edging.

• Mortars, grouts, sealers, geotextiles, drainage, vapor barriers, and adhesives.

• Saws, blades, ties, rebar accessories, safety gear, and site tools.

Brand options you will recognize and trust: Cambridge, Nicolock, Techo-Bloc, Watsontown Brick, Glen-Gery, ADA Solutions tactile pavers, Stego vapor barriers, Dutch Quality Stone, StoneCraft, Sika, SmartVent, MAX tools, Monarch, Kindred Outdoor & Surrounds, MSI, and Husqvarna. We stock the staples and can guide you to the right fit for your site. Our customers ask about color matches and textures all the time, and we can lay samples side by side so you see it before you commit.

How People Use Building Supply in Long Island, and New York City

Homeowners are using pavers and walls to turn backyards into real outdoor rooms, pairing Techo-Bloc or Nicolock pavers with Manufactured Stone or Natural Stone veneers around kitchens and fire features. Front entries get a lift with Glen-Gery or Watsontown Brick, new steps, and a clean border that stands up to winters. For drainage and basements, Stego and Sika systems keep moisture in check. ADA Solutions helps meet accessibility on walks and municipal jobs. Contractors lean on our MAX and Husqvarna tools to cut clean and keep crews productive.

Real tip from the counter: order edge restraint, base material, and polymeric sand at the same time as your pavers so you do not stall mid install. For veneer, plan for corners first, then field stone, and grab an extra box to cover cuts and waste. We see this a lot, and having a little extra saves a second trip.

Pickup And Delivery

Swing into Brentwood, East Setauket, or Riverhead for fast loading. Call ahead and we will stage your order so you are in and out. Need it on site. We deliver across Long Island and New York City, curbside or to job staging areas that are truck accessible. Our team confirms access, pallet counts, and offload needs so your crew is ready when the truck rolls up.

Get Started

Tell us what you are building and we will match the right materials with the look and performance you want. Stop by Brentwood and talk to us, or call ahead and we will stage your order. Ask us about delivery across Long Island and New York City.