12 Peconic Bay Avenue, Southampton, NY 11968

Set within Southampton's coveted bayside corridor, this 2026 new construction offers the easy luxury of a private street, deeded Peconic Bay beach access, and effortless proximity to waterfront dining. Built by Cusumano Custom Homes and designed by Ryan Kesner, the 4,500 +/- SF traditional residence offers 5 bedrooms, 6.5 baths, and a thoughtful modern layout on .34 acres. The main level features a bright great room, formal dining area, open-concept kitchen with premium appliances, a bedroom with en suite bath, mudroom, pantry, and access to the attached 2-car garage. Outdoor living centers around a covered bluestone patio and heated gunite pool, creating an easy setting for summer entertaining. Upstairs, the private primary suite is joined by two additional en suite bedrooms, a laundry room, and bonus space for future customization. Blending contemporary amenities with classic Hamptons style, the home is ready for unforgettable summers and year-round luxury living. A finished lower level with recreation space, private gym, and ensuite bedroom completes this polished bayside retreat. Beyond the home, this quiet coastal community delivers the peace and privacy that make the Hamptons so special, with Sag Harbor and Noyack close by.