9 Brothers Building Supply is your leading pool builderspool copingpool rebarpool patio supply company!

Lindenhurst Pool Builders Supply

9 Brothers Building Supply is your Lindenhurst Pool Builders Supply. We carry lumber, forms, concrete products, metal, and coping needed for pool construction, repairs, or renovations. With our wide variety of products we are a one stop shop for contractors and homeowners can get an idea for their pool coping and patio by viewing our expansive collection of paving stones. Stop in at one of our locations in Brentwood or Riverhead to see our full offering of pool building products today!

Stop in or get in touch!

Brentwood Location


1670 Islip Ave. 
Brentwood, NY 11717

Riverhead Location


28 Mill Road
Riverhead, NY 11901


We’ll help you through the process


Forklift & Boom 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

COVID-19 Essential Businesses New York
COVID-19 Essential Businesses New York

Update 6/17/20

Essentially, we will not be coming into contact with clients.

Our stores are open for business. We are allowing customers inside, but we ask that you please wear a mask - and follow social distancing guidelines. We would love to help.

If you have any questions, please ask. We urge you to visit NY Governor Cuomo’s Issues Guidance on Essential Business List.