Water Mill
Building Supply

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About Water Mill Building Supply

Located in the heart of the Hamptons, Water Mill Building Supply has been delivering white glove service since 1986. A full service building supply distributor, we’re the East End’s largest hardware store plus windows & doors, door & cabinet hardware, kitchen & bath fixtures, paint and lumber. We go the extra mile for our customers with same day delivery, blue print takeoffs and project management tools.

From frame to finish: We Make Building Simple.



Building materials

The lumber yard houses materials used for framing residential construction. In addition to engineered and dimensional lumber, sheeting and sub-flooring, yard materials include roofing, insulation, decking, fencing and sheetrock.  


Windows, Doors & moldings

Premium wood & aluminum windows and doors from top manufacturers in North America and Europe. Available in modern or contemporary styles. Additionally the department carries exterior trim products, decorative millwork, moldings and curtain wall.

Hardware Store

For both contractors and homeowners, the general hardware offering is comparable to big box retailers without leaving the Hamptons. Product lines include fasteners, site protection, hand & power tools, safety gear, electrical, auto, as well as lawn & garden amongst others.


Paint & Accessories

In addition to carrying the full line of Benjamin Moore quality products, our Paint Department offers custom color matching, stains, varnishes, adhesives, caulking, abrasives and sanding equipment plus all theaccessories and sundries required for application, protection and clean up for projects small and large.


Decorative Hardware & Plumbing Fixtures

Functional and decorative hardware for door & lock, as well as cabinet, drawers & closets. Plumbing fixtures for kitchen and bath include shower systems, faucets, tubs, vanities and medicine cabinets. 




Project Tracking

Advanced scheduling tools ensure that complex jobs are made simple via an effective tools that lets to you track the shipment and delivery of component materials.


Field Technicians

A field team that calls on customers to offer advice, solve problems and provide service and support.


Custom Color Paint Mixing

Our paint technicians can identify and reproduce a paint color from a sample, magazine or flake. 


Same Day Delivery

A fleet of vehicles ensure materials are delivered to your job site as and when you need them.

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Customer Snapshot







Hamptons area builders, contractors and homeowners know that Water Mill Building Supply, located in the heart of the Hamptons, has been delivering white glove service since 1986. We’re the East End’s largest hardware store plus windows & doors, door & cabinet hardware, kitchen & bath fixtures, paint and lumber. If you haven’t been I invite you to come to the store and discover what makes WMBS different.

Jason Liebnitzky, President
Water Mill Building Supply

Water Mill Building Supply Staff

Water Mill Building Supply Staff

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1110 Montauk Hwy
Water Mill, NY 11976