Retail store & yard

1093 Pulaski Street, Riverhead, NY 11901

Monday – Friday: 7:00 am – 4:00 pm
Saturday: 7:00 am – 3:00 pm
Sunday: closed

Design showroom

1093 Pulaski Street, Riverhead, NY 11901

Monday – Friday: 8:00 am – 4:00 pm
Saturday: 8:00 am – 1:00 pm
Sunday: closed

Riverhead Building Supply is conveniently located just minutes south of Route 25 in Riverhead.

Our Design Showroom houses multiple kitchen and cabinetry vignettes to inspire every style of project. Large windows and doors from top brands like Andersen and Marvin are also displayed with our very own Heritage Wide Plank Flooring under foot. Our team of experts at Riverhead Building Supply in Riverhead look forward to serving you.

Featured products


  • Delivery service
  • Blade sharpening service
  • Tool repair service
  • Lockset re-key
  • Decking & railing displays
  • Roofing displays & samples
  • Siding displays & samples

Installation services

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

Interested in a design consultation?

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