Welcome to 473 Hollow Tree Ridge Road in Darien - a custom built, stone and shingle Colonial set on 1.3 professionally landscaped acres offering exceptional indoor and outdoor living. This 5-bedroom smart home blends timeless architecture with extensive upgrades and modern technology throughout. The resort-style backyard features a pool with spa, pool house with nano doors, outdoor shower, custom outdoor bar, Lynx grill, fireplace, and covered patio. A slate roof, horseshoe driveway, whole-house 25kW Generac generator, and oversized 3-car garage with heated epoxy floors, built-ins, and wainscoting provide both convenience and peace of mind. The fully remodeled kitchen includes a Wolf range, additional wall oven, Sub-Zero double refrigerator/freezer, double islands with prep sink and second dishwasher, Negresco granite and quartz countertops, island seating, and a wet bar with glass dishwasher and ice maker. A paneled office, homework stations, guest/au pair suite with private access, oversized mudroom, laundry, and two powder rooms complete the main level. Upstairs, the primary suite features a renovated spa bath with heated floors, freestanding tub, oversized shower with rain head, and custom walk-in closets. Two additional ensuite bedrooms, a fourth bedroom with hall bath, game room with full wet bar, media room, and office/workstations provide flexible living.