A rare single-story retreat on nearly half an acre in one of Walnut Creek's most desirable cul-de-sac settings. Set on a beautifully landscaped 20,000 (appx) sq. ft. level lot, this exceptional property offers a spacious 4-bedroom, 2.5-bath residence complemented by a 660 (appx) sq ft. 1-bedroom detached ADU. Offered for sale for the very first time, this exceptional home reflects decades of dedicated single-owner care and pride of ownership. Inside, rich solid oak hardwood flooring flows throughout the home, while fresh paint, updated lighting, solid interior doors, and tasteful bathroom improvements create an inviting atmosphere. The versatile floor plan offers comfortable everyday living with endless opportunities to customize and expand over time. The detached ADU, complete with a full kitchen, private laundry, and full bath, adds tremendous value and flexibility for extended family, guests, rental income, or work-from-home needs. Surrounded by mature landscaping, the expansive flat lot with a serene backdrop provides exceptional outdoor living including fruit trees, a shaded patio, and a sports court area offering abundant room for entertaining, potential for RV space, play, gardening, relaxing outdoors or future enhancements. Enjoy the privacy and tranquility of cul-de-sac living while remaining close to Walnut Creek's acclaimed schools, shopping, dining, parks, and commuter routes.