Connect with Top-Rated Construction Contractors in Mattituck!

At Seifert Construction, we're a third-generation, family-owned and operated construction company serving the East End of Long Island. We specialize in building high-end, luxury custom homes, and renovations where only the finest materials and highest quality craftsmanship is accepted. With over 200 completed projects in the last 20+ years, we have built a reputation as one of the premier custom home builders on the East End. Our team of experts is dedicated to turning your dreams into reality, providing exceptional service and attention to detail every step of the way. From design to completion, we're committed to making your building experience unforgettable.