Welcome to this exquisite historic estate located in the serene & sought-after west side of Petaluma. Nestled in a quiet cul-de-sac, this property offers privacy, breathtaking views, and endless potential for development. Perfect for multi-generational living, this unique listing features a single parcel on 1.33 acres, with two distinct homes. The main house, steeped in history, boasts 4 bedrooms and 2.5 bathrooms, including a second-floor main bedroom and en-suite bathroom with a claw-foot tub. A gourmet kitchen equipped with modern appliances, beautiful wood cabinets and island that complement the home's historic charm. Walk out to the patio for a view of the sparkling solar heated pool, rock waterfall, enclosed outdoor cabana and views of the mountains and downtown Petaluma. The original barn was converted into a second living space, offering a kitchen, dining room, 2 bedrooms and 1.5 bathrooms, making it perfect as a guest house or private retreat. It retains much of its original character with its beautiful old wood floors, charming built-in hutch & red wood stove; enjoy the inviting atmosphere. Don't miss this rare opportunity to own a versatile, private and beautiful estate property in Petaluma's coveted Sunnyslope neighborhood. Come see it in person and fall in love!