Service Area

Lloyd Harbor
Natural Stone Products

9 Brothers Building Supply is a premier supplier of Lloyd Harbor natural stone products. Anything from flagstones, pavers, caps, and steps, we have the widest assortment of colors and stone types around. Bring the elegance and beauty of natural stone to your backyard or commercial project. Stop in today at one of our locations in Brentwood or Riverhead to see our full collection of natural stone products and let us help bring dreams to life!

Service Area

All Authentic
Natural Stone Products

Bring a sense of the old world to your driveway, patio, or walkway with classic Belgian Block Cobbles....
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Bring a sense of the old world to your driveway, patio, or walkway edges with Jumbo Belgian Block Cobbles....
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1" Thick Pavers   1'X1' 1'X18" 1'X24" 1'X30" 18"X24" 18"X30" 18"X36" 24"X24" 24"X30" 24"X36"  ...
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1" Thick Pavers   1'X1' 1'X18" 1'X24" 1'X30" 18"X24" 18"X30" 18"X36" 24"X24" 24"X30" 24"X36"  ...
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1" Thick Pavers   1'X2' 2'X2' 2'X3'   Fabrications available on request: - EASED EDGE - FULLNOSE...
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2" Thick Slabs   6'X8'   Fabrications available on request: - EASED EDGE - FULLNOSE EDGE -...
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2" Thick Treads   12" WIDE x 3' - 4' - 5' - 6' - 7' - 8' - 9' 14" WIDE x 4' - 5' - 6' - 7' - 8'...
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2" Thick Treads   SPECIAL ORDER ONLY   Fabrications available on request: - EASED EDGE - FULLNOSE...
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The Delgado Stone Ashlar gives a bolder thicker, but randomized style stone veneer for a look that makes...
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The Delgado Stone LedgeStone is one of our most popular products. This stone works for modern projects,...
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The Delgado Stone mosaic gives a traditional style stone veneer to give off a luxury and unique look....
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We offer a full selection of stone steps, and slabs. These unique products can be found in almost all...
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Services

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Forklift Service

a mini crane service for tight or hard to reach delivery spots!

Delivery Service

with our fleet of ready to haul trucks anywhere on Long Island, NYC & 5 Boroughs

Consult Us

to build your dream backyard, driveway, landscape, pool, or patio!

Delivery across Long Island, NYC, and the 5 boroughs

Construction Site Delivery

Local Pickup

Home Delivery

Contractor & Local Business Deliveries

Send us a Message

Stop in or get in touch!

Plainview Building Supply

1670 Islip Ave. Brentwood, NY
11717 Phone: (631) 273-3323

Rockville Centre Building Supply

28 Mill Road Riverhead, NY
11901 Phone: (631) 208-1630

East-Setauket-Location-Image

70 Comsewogue Rd SUITE 9 Setauket-East Setauket, NY 11733 Phone: (631) 928-4665