1 of 7
Contact Riverhead Building Supply

Riverhead Building Supply

From Plywood to Paint…Tools to Trim – We Have It All

Business Hours


For 70 years, Riverhead Building Supply has been the supplier of choice for quality-conscious builders, contractors, architects and homeowners in the Long Island and Rhode Island areas. Great service, knowledgeable full-time personnel, contractor sales representatives and a large inventory of top-quality products are why our building supply company is the right choice for your next project.


Always find the materials I need to get the job done right there. Quality materials and the backing of knowledgable people to help. If I do not know the answer they will. Thanks RBS crew for years of support.

Brett Marascia

Prompt, polite and professional service. A rare find these days.

Tom R.