Behind the gates of the prestigious Stone Hill enclave in Muttontown, this custom stone-and-shingle Southampton-style estate is set on 1.42 meticulously landscaped acres within a secluded cul-de-sac. Offering approximately 7,000 square feet of above-grade living space, complemented by an expansive finished lower level, the residence includes 7 bedrooms, 8 full bathrooms, and 2 half bathrooms. Timeless architecture, exceptional scale, and a thoughtfully executed floor plan define every level of the home. A soaring two-story foyer marks the beginning of the home's three impeccably finished levels, all connected by a private elevator and enhanced by radiant heat throughout. Designed for both entertaining and everyday living, the main level offers beautifully proportioned formal and informal living spaces, complemented by a first-floor guest suite, two separate offices, and an additional den-creating a layout that's both refined and highly functional. The chef's kitchen is equipped with Sub-Zero and Wolf appliances, including a built-in Miele espresso system, dual Miele dishwashers, a Sub-Zero wine cooler, warming drawer, and a custom decorative commercial-grade range hood. A sunlit breakfast room overlooks the grounds, while the formal dining room and butler's pantry-with a hammered sink and wine refrigeration-create a natural extension of the home's entertaining spaces. The primary suite delivers a true hotel-caliber retreat, complete with a spacious sitting lounge anchored by a dual-sided fireplace and a beverage center with custom cabinetry, refrigeration, and sink. A private terrace overlooks the rear property, while oversized walk-in closets lead to a spa-inspired bath appointed with dual custom vanities, a freestanding soaking tub, and elegant natural stone finishes throughout. The expansive finished lower level is designed to accommodate wellness, recreation, entertaining, and extended living. It includes a dedicated weight room, a separate yoga, Pilates, and stretching studio, a guest bedroom with its own full bathroom, a spacious lounge with a custom bar and wine refrigeration, a powder room, an oversized laundry center with dual washers and dryers, extensive cabinetry and hanging space, a massive cedar closet, abundant storage, and additional recreation areas. Smart home technology controls lighting, shades, and integrated audio throughout the residence, complemented by a multi-zone Sonos system serving both interior and exterior spaces, ambient architectural lighting, a whole-house water filtration system, and a generator. Additional amenities include a heated four-car garage, a family organization and cubby room, a private half-court sports court, and a covered outdoor cabana with a fully equipped outdoor kitchen, extending the home's entertaining spaces into the landscape. Mature landscaping frames the property, creating a private and beautifully finished setting. A rare offering within one of Long Island's premier gated communities, this remarkable Stone Hill residence is defined by exceptional design, thoughtful execution, and a level of quality that stands apart.