Set at the end of a quiet cul-de-sac in the highly desirable Three Village School District, this impressive residence offers approximately 5,000 square feet of living space with a thoughtfully designed and versatile floor plan. The beautifully landscaped parcel spans just shy of an acre, where mature specimen trees frame an oversized inground saltwater pool featuring a dedicated swim lane, diving rock and waterfall. An expansive stone patio surrounds the pool, creating an ideal setting for outdoor entertaining and dining. A tumbled stone driveway and distinctive copper accents complement the home's exterior and beautifully maintained grounds. Inside, the floor plan features four bedrooms and 2.5 baths, along with a dedicated gym, home office that can serve as an additional bedroom, and an exquisite library featuring custom floor-to-ceiling built-in shelving with a rolling access ladder. Wide-plank pine flooring spans the library, gym and office, while solid wood doors and Andersen windows throughout reflect the quality and craftsmanship found across the home. The spacious primary suite features an oversized walk-in closet and spa-like bath with dual vanities, a multi-jet shower, soaking tub and skylight. Generous living spaces include a gracious living room and separate den with fireplace, with the eat-in kitchen ideally positioned between them. The kitchen features solid oak cabinetry, granite countertops, a center-island cooking station, a pass-through to the dining room that doubles as an eating bar, and a charming window-lined breakfast nook. The home also offers two separate basements, a workshop, sizeable laundry room and three-car climate-controlled garage equipped with a hydraulic lift for a fourth car. A rare offering in East Setauket, combining substantial living space, a private setting and an exceptional array of amenities.