East Hampton, NY

Located inside the store is our millwork showroom containing interior and exterior doors, windows, and architectural hardware for every style and budget. This showroom is staffed with Millwork and Hardware experts that can educate you and help in your product selection.

Our Kitchen & Bath Showroom is located at 15 Railroad Avenue in the brick building on the corner of Lumber Lane. Here Kitchen Designers are available to craft the kitchen of your dreams.

Take advantage of these two showrooms for product selection or to get inspiration for your project!

Our team of experts at Riverhead Building Supply in East Hampton serve customers throughout the Hamptons from Quogue and West Hampton to Southampton, Bridgehampton, Amagansett and Montauk. We've got eastern Long Island covered.