A Legacy Estate in Lake Street District- Timeless Elegance Meets Endless Potential. Welcome to 21 5th Avenue, a rare opportunity to own one of San Francisco's most coveted addresses. Nestled just steps from the Presidio's iconic trails and parklands, this classic estate has been cherished by the same family for over 40 years- a testament to its enduring charm and remarkable location. With four bedrooms conveniently arranged on a single level, this home was designed for both elegance and practicality, ideal for growing families or multi-generational living. The residence offers nearly 1,000 square feet on the lower level awaiting redevelopment, perfect for creating a guest suite, media room, or expanded living space tailored to your lifestyle. Set on an expansive lot with a sun-drenched west-facing backyard, the estate includes a detached studio/office, creating an inspiring environment for remote work, creative pursuits, or quiet retreat. The backyard's size and orientation make it a rare find in the city, providing room for play, entertaining, and serene outdoor living. 21 5th Avenue is more than a home, it's a legacy waiting to be.