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 red oak hardwood flooring flows throughout the home, while fresh paint, updated lighting, newer interior doors, and tasteful bathroom improvements create a warm and 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, 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.