Riverhead Building Supply is conveniently located near the train station in Southampton at 40 Powell Avenue. Across the street at 25 Powell Avenue is our showroom which features windows, doors, molding, trim and more.
Showroom
- 25 Powell Avenue
Southampton, NY 11968 - 631-283-2000
- 631-287-9503
- Hours
Monday - Friday: 8:00 am - 4:00 pm
Saturday: 8:00 am - 12:00 pm
Sunday: closed
Retail Store
- 40 Powell Avenue
Southampton, NY 11968 - 631-283-2000
- 631-283-2270
- Hours
Monday - Friday: 7:00 am - 4:00 pm
Saturday: 7:00 am - 1:00 pm
Sunday: closed