Marin and Sonoma Counties coalesce along this coveted back road in San Antonio Valley. It seems as if time has stopped here, or at least trailing far behind As you travel through ranches older than a hundred years, nestled by the hills towards 1285 San Antonio, turning onto a privately owned road and crossing a bridge past an enchanting grove of oak, buckeye and bay trees, through a beautiful polo field created on 100 acres next door to your private estate: custom built home with soaring 22-foot-high ceilings, more than generous sized, light-filled rooms. This incredible home has 3 beds & 2 with newly renovated ensuite baths, a spacious living room, dining room, and kitchen & two live-work loft spaces. Other features: wood burning fireplace, with glass door, operable skylights, aiding an energy efficient solar chimney system which regulates the home's temperature,, while radiant heat in the floor warms the winter days. Landscaped with drip watering system in place, hugging a tree-lined glen on the banks of San Antonio Creek, featuring multiple patios and enclosed vegetable garden. Located just outside of West Petaluma with convenient access to 101 and a short drive to downtown Petaluma, surrounded by well over 100 square miles of open spaces, ranches & rolling hills.