Retail store & yard

21 Railroad Avenue, East Hampton, NY 11937

631-324-0300
 631-324-0880

Hours
Monday – Friday: 6:30 am – 4:00 pm
Saturday: 7:00 am – 3:00 pm
Sunday: 7:00 am – 12:00 pm

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Riverhead Building Supply is located across from the train station in the Village of East Hampton.

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.

In addition to windows and doors, we offer a full range of quality lumber and hardware materials—perfect for both building professionals and homeowners tackling projects of any size.

Featured window and door products

ANDERSEN®
WINDOWS AND
DOORS 400 SERIES,
A SERIES

Quality and performance you can trust.

MARVIN® WINDOWS
AND DOORS

Windows and doors built for how you live.

THERMATRU DOORS

Where home begins.

TRUSTILE DOORS

Design that moves you.

INTERIOR & EXTERIOR
DOORS

Interior and exterior doors for any project from stock to fully custom.

RBS Pre-Hung Doors

Let us be your Master Carpenter.

Services

  • Delivery service
  • Window and door displays
  • Color and wood species samples
  • Window and door hardware options
  • Brand literature
Learn more about our services

Installation services

  • Andersen® service & repair
  • Andersen® installed sales
  • Marvin service & repair
  • Marvin installed sales
  • Storm & screen door installation
  • Window & Door installation and replacements
  • Lift & slide ‘big door’ installation
  • Bilco® basement door installation
  • Screen enclosure installation
  • Garage Doors parts and installation

Connect with a millwork specialist

Tell us about your project and a designer will reach out to you
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