Service Area

Hardscape Supply Products

9 Brothers Building Supply offers a quality selection of Riverhead hardscape supply products! We stock leading brands such as Cambridge, Nicolock, Techo-Bloc and more. You will find natural stone and paving stones suitable for all patio, driveway, and walkway designs. Wall systems to add extra definition and depth to the hardscape and all the outdoor living features like fire pits and tables, outdoor fireplaces, outdoor kitchens, and pizza ovens. Homeowners and contractors alike please stop in at either our Brentwood location or Riverhead location to see our collections in person and let us help you make your dream become a reality!

All Authentic
Riverhead Hardscape Supply Products


We’ll help you through the process

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


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