Ensure your projects are done right every time with exceptional building supplies and services from Riverhead Building Supply. Since 1948, we have been providing our customers with premium building materials and services including flooring, roofing, railing, accurate and detailed estimates, pre-job planning services, the highest quality lumber and millwork and more. General contractors, custom home builders, remodelers, architects and homeowners throughout Long Island, Connecticut, and Rhode Island count on us for a broad range of lumber, building materials, and specialty services.

For 72 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. Our showrooms feature the latest in doors and windows, roofing and siding, cabinets and moulding, wide plank flooring, and just about any other item you need to complete your project successfully.

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