The Best Lumber store in Mattituck, New York

Welcome to Amagansett Building Materials, your trusted partner for all your building supply needs, located at 12585 Sound Avenue, Mattituck, New York. As part of the esteemed Florence Corporation, founded in 1946, we have grown from a small roofing and siding distributor into a comprehensive building material supplier. With five warehouse locations and showrooms, we are dedicated to meeting the needs of professional home improvement contractors, builders, and architects. Our Mattituck location offers a complete showroom experience with sales assistance, a wide inventory, and reliable high-quality deliveries. We provide specialized services including Unassisted Rooftop Delivery, Low Slope, Siding, and Decking. Our knowledgeable Territory Managers are available to offer expert consulting services to help you find the best solutions for your projects.