Discover the epitome of San Francisco's mid-century charm at 989-991 Duncan Street, where classic design meets modern luxury. This unique 2-unit building, originally custom-built in 1962 for two sisters, has been meticulously maintained and updated over the years, preserving its timeless mid-century character. Each spacious unit boasts 2 bedrooms, 2 baths, and impressive ceiling heights. Recent updates include stone countertops and a Sub-Zero refrigerator, seamlessly blending mid-century aesthetics with contemporary functionality. The wood-paneled walls and cozy fireplaces with brick surrounds exude a warm, inviting atmosphere. Step outside onto expansive decks offering panoramic views of the city, or retreat to the serene interior courtyard, creating a private oasis in the heart of San Francisco. Additional features include a 2-car garage and a basement with a generous bonus room and bath, providing valuable extra space. Situated on a flat block within walking distance to markets and amenities, this property offers the best of city living. Importantly, it's currently vacant and boasts a clean history with no evictions. Embrace the mid-century lifestyle with this iconic San Francisco property.