Located in the prestigious Huntington Library district, one of San Marino's most sought-after neighborhoods, this stunning single-level Ranch-style residence offers an exceptional blend of comfort, functionality, and California living. Featuring 3 bedrooms and 4 bathrooms in the main residence, the property also includes a separate, private approximately 400-square-foot 1-bedroom, 1-bathroom guest quarter above the garage. Thoughtfully maintained and move-in ready, the home is set behind a sprawling front lawn that leads to a welcoming covered porch. A gracious foyer with beautiful wood flooring, which continues throughout the home, introduces the inviting interior. To the left, the formal living room is anchored by a handsome fireplace, while the formal dining room on the opposite side features a striking linear light fixture. Beyond the dining room, the sun-filled kitchen, remodeled in 2021, showcases a generous quartz-topped center island, breakfast area, stainless steel appliances, and abundant cabinetry and storage. The adjoining family room provides a relaxed gathering space with a sunken wet bar and a wall of windows and French doors that open to the expansive backyard. A covered patio, pool, and spa create an inviting setting for entertaining and enjoying seamless indoor/outdoor California living. Conveniently positioned adjacent to the family room are a dedicated office and a separate den with a second fireplace, offering flexible spaces for work, relaxation, or additional living needs.All three bedrooms are generously proportioned and feature ensuite bathrooms remodeled in 2021. The spacious primary suite includes a dedicated dressing area with built-in vanity, multiple mirror-paneled closets, and a dual-sink bathroom vanity. Additional highlights include recessed lighting, a central alarm system, central heating and air conditioning, tankless water heater, solar panels, a dedicated laundry room with utility sink, and a two-car garage with automatic door opener. The separate guest quarter above the garage adds valuable versatility for extended family, guests, a private office, or other living arrangements.