Make your dreams come true with the help of 9 Brothers Building Supply!

9 Brothers Building Supply is a family run business located in both Brentwood and Riverhead. Unlike the name suggests, there are not 9 brothers running the company. However, the name remains to pay homeage to the family that started it all in 1980, 4 brothers with five other siblings who had a passion for masonry and construction products alike.

The 9 Brothers Building Supply team has worked tirelessly to bring products to homeowners and contractors looking to bring their newest ideas to life. Whether you are looking to give your yard a complete makeover or simply update a patio, 9 Brothers has the products you need to make things happen.

With easily accessible pavers from leading brands such as Nicolock, Techo-Bloc- Unilock, and Cambridge Pavers available at our 9 Brothers Building Supply facilities, there is something for every one.

1670 Islip Ave, Brentwood NY 11717 |  (631) 273-3323

23 Mill Road, Riverhead NY 11901|  (631) 208-1630

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.