Ideally positioned on the prized north side of one of Cow Hollow's premier blocks, 2512 Union Street is a classic San Francisco residence defined by timeless architecture and exceptional family living. Thoughtfully updated, the home offers a highly functional floor plan tailored to today's lifestyle. The main level strikes a seamless balance between entertaining and everyday family living. Handsome millwork, coved ceilings, and custom cabinetry frame a series of well-proportioned rooms. At its center, a generous bay-view family room opens directly to the kitchen and breakfast area creating a warm, connected space for daily living. The robust kitchen is anchored by a large center island, custom cabinetry, a walk-in pantry, and professional-grade appliances. Off the entry, formal living and dining rooms are perfectly scaled for entertaining, with French doors opening to a private front courtyard. The second level presents an ideal family layout. An expansive primary suite captures iconic views of the Palace of Fine Arts and the Golden Gate Bridge, and includes built-ins, a wood-burning fireplace, a sitting area, a custom-fitted dressing room, and a spacious bath with dual sinks, soaking tub, and separate shower. Three additional bedrooms and two well-appointed baths complete the level, an uncommon and highly valuable configuration. The top floor is a natural extension of living space, anchored by a light-filled pentroom with cathedral ceilings and wall-to-wall windows framing sweeping views from the Golden Gate Bridge to Alcatraz. A view terrace opens directly off this space, while a private office, guest bedroom, and full bath complete a highly functional upper level well-suited for guests, work, or extended living. Below, the lower level is bright and inviting, offering a private guest or au pair suite, a flexible media or playroom, and direct access to a large, flat, north-facing garden with an expansive turf area. Timeless in character and thoughtfully executed, 2512 Union Street offers a rare combination of livability, light, and a floor plan that works effortlesslyset on one of Cow Hollow's most desirable blocks.