About 9 Brothers

Who are we?

What is 9 Brothers Building Supply? No, nine brothers don’t actually run the business as the name suggests. Instead, it represents our founding family of our masonry and supply company in 1980. Located in Brentwood, it was started by five brothers who also had four other siblings.

Implemented is a very fast technology system we have dearly invested in that allows us to check inventories of supplies and get supplies to job sites as fast, accurate, and smoothly as possible.

We have worked very hard to be as professionally customer oriented as possible and modernize the business. For us, the best part of being in business is watching our customers come find the item they’ve been searching for! Every day is different for us. It’s exciting because we get to help people fulfill their dream projects!

9 Brothers Building Supply is a State Certified Woman Business Enterprise designation, meaning it’s primarily owned and operated by women!


9 Brothers has been in the family business since 1980.

In 2012, Ida Palmieri and her sons, Stephen Palmieri and Victor Palmieri purchased 9 Brothers Building Supply from her father-in-law and his four brothers. We are still a huge family affair; Ida’s husband Tony, and son-in-law Marco work here!

When the purchase went through, we have had one determination to become the best building supply company of Long Island, the 5 boroughs, and NYC. The masonry and paver industry is a very specific business; when customers come in they know what they are looking for. And we have them! We are constantly updating our inventory to meet everybody’s needs.

9 Brothers purchased our Riverhead location in 2015 and focused on expanding the store’s offerings by adding new products and putting an even larger emphasis on customer service.

  • 2017 – Redesign inventory and logistics infrastructure
  • 2015 – Purchase of Riverhead Location
  • 2012 – Purchase of 9Brothers from family by Ida P.
  • 1980 – 9 Brothers goes into business


To serve with consistency and the best quality products for the best prices for years to come on Long Island. Our company is all family, and we are one!


By helping our customers and clients grow we know they will help us grow as well. We are committed to providing amazing service and our customers are everything! We will never dissapoint.



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COVID-19 Essential Businesses New York

COVID-19 Essential Businesses New York

Update – WE ARE OPEN – but here’s what changes to expect until further notice.

It is with sad dismay we must make this announcement – the COVID – 19 Coronavirus is severely impacting and changing everybody’s lives. We’re here to assist, and we are open during normal business hours – however we must make changes to how we do business at 9 Brothers Building Supply until further notice.

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

Our stores are open for business. We ask that we limit clients to 1 client per visit, while practicing social distancing. We also encourage using phone calls and our website to browse our products.

We encourage all of our clients and Masons, Landscapers, and Contractors to PHONE-IN their order, and utilize our website catalog for shopping.

We are still delivering.

All customer payments will be digital over the phone via Debit Card/Credit Card. Only known businesses will still be able to mail a check to us. New businesses must drop off or mail a check and it must clear before any goods are shipped or released for pickup. You can become a “known” business by filling out a credit application.

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