Tucked away on a quiet cul-de-sac, this single-level residence offers seamless indoor-outdoor living and a resort-style backyard retreat. Offering approximately 3,678 square feet of total living space, the property includes a 3,082-square-foot main residence and a separate 596-square-foot ADU. Inside the main home, soaring wood-clad ceilings, abundant natural light, and hardwood floors create a warm and inviting atmosphere with distinctive architectural character. The kitchen is anchored by a generous center island and overlooks the sparkling pool and lush backyard, creating a natural connection between everyday living and outdoor entertaining. The expansive, level lot is a true highlight. A sparkling pool and spa sit at the center of the beautifully landscaped backyard, surrounded by mature trees that offer a sense of privacy and tranquility. An outdoor kitchen, inviting lounge and dining areas, fire feature, and spacious lawn provide the perfect setting for both intimate gatherings and larger celebrations. The 596-square-foot ADU adds exceptional flexibility with its own kitchen, full bathroom, and NanaWall folding doors that create a seamless transition to the outdoors. An attached garage, currently utilized as an air-conditioned home gym, adds even more versatility, making the property especially well suited for hosting guests, multigenerational living, a private home office, or fitness and recreation. Blending mid-century modern character with effortless California living, 2973 Limestone Rd offers an exceptional combination of architectural charm, versatile living spaces, and resort-style outdoor amenities, all within the comfort of a private retreat. Enjoy the luxury of living near the esteemed Round Hill Country Club, where you can engage in recreational activities, social events and connect with a vibrant community. The home is also situated within the highly regarded San Ramon Valley Unified School District, just a short distance from Stone Valley Middle School and the shops, restaurants, and conveniences of downtown Alamo.