Perched above Mill Valley with sweeping views of Mt. Tamalpais, 133 Shelley Drive is a beautifully updated 4-bedroom, 3-bath residence where light-filled interiors, an exceptional floor plan, and inviting outdoor spaces come together with ease. The main living level is designed to take full advantage of its setting, with expansive windows framing the surrounding hills and Mt. Tam beyond. The living room offers a comfortable gathering space centered around a fireplace, while the adjoining kitchen and dining areas create an effortless flow for everyday living and entertaining. From the dining area, doors open directly to a sunny garden patio surrounded by lush, mature landscaping, with multiple areas to lounge, dine, and enjoy the outdoors. On the upper level, the primary suite feels like a retreat of its own. Vaulted ceilings and abundant natural light create an airy sense of scale, complemented by a fireplace, sitting area, generous bath, walk-in closet, and private deck showcasing spectacular views. Three additional bedrooms provide flexibility for family, guests, or a home office, while thoughtful improvements throughout make the home comfortable and move-in ready. Set against a beautiful natural backdrop, 133 Shelley Drive captures the relaxed indoor-outdoor lifestyle and scenic beauty that make Mill Valley so special. Ideally situated, the home offers convenient access to downtown Mill Valley, nearby trails and open space, acclaimed schools, shops and restaurants, and the many outdoor amenities that make this such a sought-after place to call home.