421 Wister Road is definitely not your typical brick colonial. This very special home must be seen in person to be fully appreciated. The 4-bedroom, 3.5-bath residence has been thoughtfully and beautifully transformed by its current owners with a stunning three-story addition, completed in 2016. The result is an expansive, light-filled living space designed to seamlessly bring the outdoors in. The Family Room will exceed expectations, featuring white oak hardwood floors and walls of windows that flood the space with natural light. Sliding French barn doors open to a breathtaking fully conditioned sunroom with a vaulted ceiling, Palladian window, tile flooring, and three walls of windows with easy access to the private deck and paver patio- perfect for enjoying the serene backyard. The spacious eat-in kitchen is ideal for both everyday living and entertaining, offering a long center island with seating for 3-4, space for an additional table, double ovens, a separate 5-burner Bosch cooktop with retractable vent, pantry, granite countertops, radiant heated floor, and abundant cabinetry. The formal dining room showcases a fireplace with wood-burning stove insert, while the den provides the perfect retreat for relaxation. A cheerful mudroom with a window bench leads to the driveway and small covered side deck- especially convenient in inclement weather. The primary suite, part of the addition, features two custom outfitted walk-in closets and a spa-like bathroom complete with a BainUltra freestanding air tub, custom double vanity and an oversized frameless glass shower. A well-appointed Laundry Room featuring checkerboard tile flooring, fulll size washer and dryer, sink and cabinetry is just off the primary suite. Three additional spacious bedrooms, one an ensuite, all with deep closets, and a full hall bath complete the second floor. Two staircases provide access to the lower level, which includes a finished Bonus Room, unfinished storage room and direct entry to the integral two-car garage and additional storage room. The large level fenced backyard is truly exceptional - a wildlife haven, private and peaceful with a mature garden featuring an array of perennial edible plants. The best of all worlds...perfect, quiet location in Lower Merion Township, in a walkable neighborhood minutes to shopping, schools and restaurants as well as to downtown Philadelphia, 30th Street Station and Philadelphia International Airport. You won't want to miss this very special opportunity!