When held, touched and viewed side by side, Unilock products look and feel different, and set the standard for quality. That’s why so many homeowners, contractors, landscape designers, and architects across North America have trusted Unilock products over the past 40 years. Choose their brand for your next dream outdoor paving or landscape project!

Brentwood Unilock Products

If you are looking for elegance in masonry and hardscape products 9 Brothers Building Supply is your source for Brentwood Unilock products. You will find all you need to create superior designs and hardscapes that will last a lifetime. Visit one of our locations in Brentwood and Riverhead to see these quality products for yourself and let us help dreams become reality!

Stop in or get in touch!

Brentwood Location


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

Riverhead Location


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


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