Exceptional opportunity in Walnut Creek: 3BD/2BA main home + 1BD/1BA attached ADU on a nearly half-acre flat lot (approx 20,909 sq ft). Whether you're looking for room to grow, multigenerational living, rental income, or simply extra space, this property delivers. The single-story main residence offers a traditional layout with a spacious living room featuring a fireplace & picture window & separate dining room just off the kitchen. The kitchen includes a center island with bar seating, generous counter space & ample cabinetry for storage. All 3 bedrooms are well-sized, including a rear bedroom with sliding door access to the deck & yard, 2 bathrooms & laundry room complete the main home. The ADU has its own entrance & is fully equipped with a kitchen, living & dining space, full bathroom, bedroom & in-unit laundry—an excellent setup for guests or rental income. Outside, the expansive flat lot offers endless possibilities. Enjoy the existing pergola-covered deck, patio seating area, mature shade trees & a variety of established fruit trees. Room to add a pool, garden beds & additional outdoor features. A long driveway provides parking for multiple vehicles. Located on a quiet residential street just minutes from downtown Walnut Creek, BART & top-rated schools.