Lovingly owned by the same family for nearly 60 years, 166 Middlefield Drive is a beautifully maintained 4BR + den, 3BA home in San Francisco's sought-after Lakeshore neighborhoodon the market for the first time in decades. Originally built as a custom developer's home, it features a thoughtful floor plan, elegant hardwood floors, and sunlit rooms throughout. Two spacious bedrooms include en-suite baths, while the bright eat-in kitchen flows into a formal dining roomideal for everyday living or entertaining. A classic wood-burning fireplace anchors the inviting living room with soaring ceilings. The lower level offers a versatile den, an additional en-suite bedroom, a generous laundry room, and a two-car side-by-side garage with a structural steel beam (no center posts!) and room to expand. Enjoy a landscaped backyard with timed sprinklersperfect for relaxing or hosting. A rare opportunity with flexibility, storage, and room to grow.