Yard lumber in Southampton, New York

Welcome to Riverhead Building Supply, your premier destination for all your hardware and home goods needs in Southampton, New York. Conveniently located at 40 Powell Avenue, our store is committed to providing top-quality products and exceptional service to both professional builders and DIY enthusiasts. At Riverhead Building Supply, we offer an extensive selection of building materials, tools, and home improvement products to help you tackle any project, big or small. Our knowledgeable and friendly staff are always on hand to offer expert advice and assistance, ensuring you have everything you need to get the job done right.