Perfectly positioned on a pristine, park-like 1.35-acre cul-de-sac parcel, this beautifully maintained Water Mill traditional offers an incredible blend of immediate luxury and effortless future upside. Boasting a rare, highly coveted 4-bedroom Board of Health-approved septic system already in place, this turn-key 3-bedroom, 2.5-bath shingle-style residence eliminates the multi-month regulatory headaches of Hamptons expansion. With close to 4,850 +/- total sq ft, buyers can easily convert existing space, build a stunning new addition, or utilize the massive, full unfinished basement to seamlessly create a legal 4th bedroom suite. The light-filled, interior flows seamlessly from the welcoming entry to the expansive living spaces, ideal for elegant entertaining. Structural and mechanical integrity take center stage with extensive recent modernizations, including a brand-new furnace, upgraded dual-zone A/C systems, an Aprilaire commercial dehumidifier, and upgraded insulation. The exterior is equally refined, featuring full-length covered porches, newly waterproofed masonry, and low-maintenance Versatex PVC trim. Outside, a true resort lifestyle awaits. A sprawling bluestone patio surrounds the heated, saltwater gunite pool, all framed by mature, professional landscaping that ensures total privacy. This is a rare, mechanically flawless asset offering unbeatable value and immediate equity growth potential in a premier Water Mill location.