Southampton Building Supply in Long Island and New York City

Looking for a reliable building supply partner for projects in Southampton or anywhere across Long Island and NYC. At 9 Brothers Building Supply, we stock the masonry, hardscape, landscape, and construction materials homeowners and contractors ask for every day. We help with everything from a simple patio refresh to full new builds and streetscape jobs. You can count on our Brentwood, East Setauket, and Riverhead yards for pickup, and we run delivery to Southampton and the five boroughs all week.

What We Carry
We keep the core categories ready to roll, all in one stop: Manufactured Stone, Natural Stone, Hardscape, Construction, and Masonry materials. That covers pavers and slabs, retaining walls, wallstone, brick, block, mortar, rebar and wire, drainage and geotextiles, adhesives and sealers, and job site tools.
Brands our customers know and trust, and that we stock in depth: Cambridge, Nicolock, Techo-Bloc, Watsontown Brick, Glen-Gery, ADA Solutions tactile pavers, Stego vapor barriers, Dutch Quality Stone, StoneCraft, Sika, SmartVent, MAX, Monarch, Kindred Outdoors & Surrounds, MSI surfaces, and Husqvarna saws and compaction. Tell us the look or spec. We match you with the right line and accessories so the install goes smoothly.

How People Use Southampton Building Supply in Long Island and New York City
Homeowners come to us for backyard makeovers, walkway repairs, and curb appeal upgrades. Think Cambridge or Nicolock paver patios, Techo-Bloc steps, Dutch Quality Stone or StoneCraft veneer on entryways, and Glen-Gery or Watsontown Brick for accent walls. We help pick the right edging, polymeric sand, and sealer so the project lasts.
Contractors lean on our inventory for fast-moving jobs, from footing and block work to retaining walls and municipal sidewalk restorations with ADA Solutions tiles. Site tools from Husqvarna and MAX keep crews productive, while Sika and Stego cover adhesives and moisture control. If you are searching for a building supply store Southampton or wholesale building supply Southampton, we are set up to support you with stock and delivery, no guesswork.
Real tip we share all the time, plan your base first. For pavers in coastal Southampton soils, overbuild the base by an extra inch, compact in lifts, and use a proper geotextile underlayment. It adds a little time, it saves a ton of callbacks.

Pickup And Delivery
Pick up at any of our three yards, Brentwood, East Setauket, or Riverhead, whichever is closest to your route. We can load you fast, from palletized pavers and veneer to bulk aggregates. Need it dropped on site. We deliver across Long Island and New York City, including Southampton and the surrounding East End. We coordinate truck type to your street and staging area, so materials land where your crew needs them.

Get Started
Tell us your project, we will line up the right materials and quantities. Stop by Riverhead if you are heading out to the Hamptons, or swing through Brentwood or East Setauket for pickup. Call ahead and we will stage your order, or ask us about delivery to your Southampton job site.