Finding the right masonry supply company in Smithtown doesn’t need to be difficult. We offer all the right products and materials for your masonry needs. At 9 Brothers Building Supply, we are the right Smithtown masonry supply company for your project.

Whether you’re taking on just one masonry project or dozens, we have everything you need. We offer products to cover all your needs including construction products, hardscapes, landscaping materials, masonry products, and more. No matter the type of project you’re taking on, we have the right materials and products to help you get it done.

Smithtown Masonry Products

From ADA pavers to mortar mix to brick columns, we have all the masonry products you need. Our team will help you find the right materials in one of our two locations in Brentwood or Riverhead. When you need to complete a major construction project or just a small project, we can help. Whether you’re building a pool, patio, driveway, or any else, we’ve got you covered.

Smithtown Hardscapes

We also offer the right hardscape products for your needs. If you’re creating an outdoor kitchen, adding a patio, or even just putting in a fire pit, we have the right options for your needs. Our team can help you find everything you need to create a beautiful outdoor living space.

Smithtown Construction Supply

Our construction products give you just what you need including foundation vents and egress windows. We have concrete construction products, along with a lumber yard with all the right options to fit your needs.

Smithtown Bulk Landscape Supply

Even when you need to complete some landscaping, we have just what you need. Our team will help you find the rocks, mulch, topsoil, sand, and other landscaping products you need for your project.

As the top Smithtown masonry supply company, we know how to make sure you get just what you need. Our team will ensure you can complete your project, no matter the size with all the right materials.

At 9 Brothers Building Supply, we stock all types of masonry products, and much more. Stop by our Brentwood or Riverhead stores today and find all the right products to fit your needs.

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9Brothers Building Supply

Build your dream outdoor living experience!


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 & the 5 Boroughs of NYC

Consult Us

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

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