Introducing 25 Brewster Lane, a brand-new waterfront estate nestled in the prestigious enclave of Strong's Neck in East Setauket-one of the most coveted and historically rich neighborhoods on Long Island's North Shore. Set on 4.0 private, landscaped acres with direct frontage on Port Jefferson Harbor, this 20,000+/- sq ft (includes finished lower level) architectural masterpiece blends timeless elegance with resort-style living. The home features 6 bedrooms and 9 bathrooms across three expansive levels, all serviced by a private elevator. Inside, you'll find soaring ceilings, radiant heated floors, five fireplaces, and a fully integrated smart home and whole-house entertainment system. Every space is oriented to capture stunning water views and natural light. The main level is designed for both elevated entertaining and everyday living. At its center is a chef's kitchen featuring a massive island, top-of-the-line appliances, a sunlit eat-in breakfast area, a formal dining room, a bar/lounge-style space with a fireplace, as well as a home theater room-perfect for hosting or relaxing in style. The first floor also includes a full guest suite with private bath. Upstairs, the primary suite offers an exceptional private retreat with panoramic harbor views, a spa-like bathroom, separate his-and-her dressing rooms, a sitting room with fireplace, and a private study. The second level also includes four additional bedrooms, each with its own ensuite bathroom, providing both comfort and privacy. The fully finished lower level is a destination in itself, complete with a gym, golf simulator, and game room. Two spectacular pools elevate the experience-an indoor pool with waterfall feature and an outdoor infinity-edge pool that blends seamlessly into the harbor backdrop. Beautiful patios, full outdoor kitchen, and entertainment terraces offer luxurious indoor-outdoor living. A protected mooring area just off the property's shoreline and potential for future dock installation provides convenient boat access for the marine enthusiast. Located just minutes from the shops, restaurants, and marinas of Port Jefferson Village, 25 Brewster Lane is a once-in-a-generation opportunity to own new construction on the water in one of the North Shore's most private and storied settings.