Set on four private acres of wooded, waterfront land once part of the 100-acre Masury Estate known as Beaurivage ("Beautiful Shore"), 34 Old Neck Road South in Center Moriches honors its history and natural setting while embracing contemporary design and eco-friendly building practices. Reached by a 19th c. allée of Linden trees, the approach is a quiet and dramatic introduction to the 2020 Lindal-designed residence beyond. The ground level entry foyer provides access to the garage, mudroom and generous storage areas before leading upstairs to the home's primary living level. There, expansive floor-to-ceiling windows, wood beams, and clerestory windows define the great room creating a seamless connection to the natural landscape, water and wildlife throughout the seasons.The spacious eat-in kitchen, complete with pantry and adjacent laundry room, balances everyday functionality with thoughtful design. Whether preparing a simple meal or hosting a larger gathering, the layout supports both with ease, efficiency and style. A large cast cement fireplace anchors the great room living and dining spaces with adjoining balcony and flows to the outdoors via triple sliding glass doors to a screened-in porch. A second fireplace there enables enjoyment of fresh air and ocean breezes well into the cooler months. Just off the living room and kitchen, a den provides additional flexible space for reading or relaxing. Two guest bedrooms, each with en suite baths, offer nature views along with privacy and separation from the main living areas. The top floor primary suite provides a private retreat with its own en suite bath and large walk-in closet. A balcony creates a treehouse-like vantage point overlooking the wooded setting and Moriches Bay beyond. A loft open to the living space below offers additional flexibility, ideal for a home office or secondary sitting area. Outdoors a large Ipe deck features a heated saltwater pool (with automatic cover), cabana, wet bar and changing room to enhance summer living and entertaining. A winding path leads from the backyard to two natural beaches, providing direct water access and a peaceful setting for dining, reading or reflection. For canine residents, the property offers two acres of wooded area for roaming protected by invisible fence. Built to be FEMA compliant, and engineered to meet current floodplain standards, this home offers both peace of mind and long-term resilience in this waterfront setting. 47 solar panels and 3 heat pump powered HVAC zones further enhance efficiency, reducing operating costs while supporting a more sustainable way of living for this 100% electric-powered home. Center Moriches has long been appreciated as a waterfront destination, once home to a collection of Gilded Age estates and bayfront hotels that drew visitors seeking escape from city life. Today, this private waterfront retreat offers a unique opportunity to continue that tradition in a high-quality, recently built home for year-round delight.