Perched in Mill Valley's coveted sunbelt Summit Avenue neighborhood, 25 Upper Alcatraz Place is a distinctive architectural residence offering spectacular San Francisco and valley views, sunlit privacy, and easy access to the heart of downtown. Built in 1971 and originally owned and designed by an architect, the home reflects a thoughtful modern sensibility with custom detailing, beautiful woodwork, and an enduring connection to its natural surroundings. Spanning 3+ levels, the residence features four bedrooms, three full bathrooms, a generous family room, and a lift/elevator providing convenient access throughout the home. The upper-level primary suite is a private retreat with captivating views across the city and valley. The efficient kitchen is equipped with Thermador appliances, while expansive windows and multiple outlooks bring natural light and the surrounding landscape into the home. A one-car garage is complemented by an attached officeideal for working from home or additional flexible space. Set on a generous 21,600-square-foot street-to-street lot, the property extends from Upper Alcatraz Place to Corte Madera Avenue, providing a rare sense of space and room to grow. Floor plan square footage is 2,825 sq. ft. The home feels wonderfully proportioned and private while remaining connected to village life. Take the neighborhood Steps, Lanes and Stairs shortcut downtown for an evening dinner, morning coffee, or a quick trip to Mill Valley Market for ingredients on the way home. Architectural character, expansive views, abundant sunlight, and an exceptional setting come together at 25 Upper Alcatraz Placea truly special Mill Valley property with the space, privacy, and location to create an extraordinary place to call home.