Set on a magnificent 30,851± sq ft flat estate parcel in coveted San Mateo Park, this timeless residence offers beautifully scaled living space and resort-style grounds designed for indoor-outdoor living. A sweeping circular motor court and detached 3-car garage create a grand arrival. Inside, hardwood floors, classic millwork, and formal living and dining rooms establish warmth and presence. The updated kitchen features custom cabinetry, stone countertops, professional-grade appliances, generous island, and a light-filled breakfast area opening to the family room and rear grounds. Upstairs includes spacious four bedrooms highlighted by a junior suite and a serene primary suite with office. Three full baths serve the upper level, complemented by a powder room and additional half bath downstairs. A finished basement adds flexibility. The grounds feature a sparkling pool, spa, expansive patios, private Entertainer's Cabana, level rear turf lawn, and lush front lawn framed by mature trees for privacy. Flat parcels of this scale in San Mateo Park are increasingly rare. Combined with a detached garage, circular drive, pool, spa, and move-in livability, this represents a compelling opportunity in one of the Peninsula's most prestigious neighborhoods.