Set on two beautifully landscaped acres in the prestigious enclave of Old Westbury, this custom-built estate has been meticulously maintained by its original owner and thoughtfully updated to create a sophisticated blend of contemporary and traditional design. Spanning three expansive levels, over 10k SF including lower level, the residence offers a unique balance of timeless architectural detail and modern open-concept living. A dramatic double-height foyer introduces sun-filled interiors featuring soaring ceilings, oversized windows, custom millwork, and elegant finishes throughout. Traditional craftsmanship is complemented by contemporary design elements, creating a home that feels both refined and inviting. The heart of the home is a beautifully appointed chef's kitchen featuring professional-grade appliances, custom cabinetry, and an oversized center island, seamlessly connecting to the outdoor patio and multiple living and entertaining spaces. The bedroom accommodations are generously proportioned, offering comfort, privacy, and beautifully designed bathrooms. The primary suite is privately positioned in its own wing and features two walk-in closets and an oversized spa-like bathroom with a Jacuzzi tub. Above the primary bedroom, a second-floor home office creates a quiet, elevated retreat within the suite's private wing. The walkout lower level serves as a dedicated wellness and recreation retreat, complete with a fitness center, sauna, playroom, guest accommodations, and separate staff quarters. Outside, the estate unfolds into a private resort-like setting. Enjoy a heated swimming pool with spa, private tennis and pickleball court, dedicated playground, and sprawling lawns framed by mature landscaping and specimen trees. A three-car garage and generator complete the offering. Rarely does a property so successfully combine the warmth and character of a traditional estate with the clean lines and functionality of contemporary living. Offering privacy, scale, and exceptional amenities, this one-owner residence presents a unique opportunity in one of Long Island's most coveted communities.