A rare and remarkable opportunity in prime South Walnut Creek! Set on nearly 2 flat, usable acres, 2129 Youngs Valley Road offers endless potential for a custom estate, family compound, or lot split (buyer to verify). Amazing opportunity to customize your dream home built by local luxury builder Mark One Development. Approved plans feature 6 bedrooms + office + bonus room, 6.5 bathrooms, and approximately 5,600 square feet of thoughtfully designed living space. Whether you move forward with the current vision or bring your own, this build-to-suit parcel is a true blank canvas. Located in a private, serene setting just minutes to downtown Walnut Creek, top-rated schools, and major commute routes. Rarely does a property of this scale, flexibility, and location come to market—bring your dream to life!