13 Lia Fail Way, Cos Cob, CT 06807: Set on over an acre at the end of a quiet cul-de-sac within the private Lia Fail Association in Greenwich, CT (Cos Cob), this exceptional stone and clapboard Colonial masterfully blends timeless style with resort-like amenities across approximately 6,300 square feet of beautifully designed living space. The property offers ultimate privacy and an expansive yard designed for grand-scale entertaining, complete with a spacious deck, a professional-grade 54-yard chipping green, and a large hot tub. Inside, this 4+ bedroom, 7 bath home is the pinnacle of effortless sophistication, featuring elegant formal living and dining rooms alongside a gourmet kitchen that opens seamlessly to a sunlit family room and casual dining area. An additional den and a large executive office, outfitted with custom built-ins, a wet bar, and its own en-suite bath, complete the main level. Upstairs, the second floor hosts four large en-suite bedrooms, including a luxurious primary suite retreat. Endless versatility awaits on the finished third floor, which offers a bonus room, office space, and a full bath. The expansive lower level is fully equipped with a playroom, gym, potential au pair/in-law suite with full bath, mudroom, and a two-car oversized garage. This magnificent estate offers an unparalleled private lifestyle, all under 1.5 miles to the train, schools, shopping, dining, and parks.