Rare 107 acre Arroyo Grande Ranch with amazing Huasna Valley views. The former Huasna Valley Farm is totally usable and was previously used to farm organic fruits and vegetables. The two-story main residence is a custom passive solar home, built in 1999, and has 4 bedrooms/3 baths and a basement. The basement and main level of the home were built with insulated concrete form construction. The second level features 2x6 wood framing and R40 insulation. The radiant floor heating and ceiling fans, along with this construction, help maintain a year-round comfortable interior temperature. There is also a detached 2-car garage and a detached 576 sq ft guesthouse with a bedroom, full bathroom, loft, and kitchenette. The property also features a rustic third residence that has 3 bedrooms and 1 bathroom. Other outbuildings include a shop, pole barn with a concrete floor, walk-in cooler and an enclosed storage room. Water is provided by a high producing private well with over 9,000 gallons of storage. The 20 acre foot reservoir collects water from a 17 acre catchment area. There are over 40 acres of cultivatable land surrounded with deer fencing. The remainder of the property is completely fenced with barbed wire. Property is in the Williamson Act and buyer should receive a tax benefit. There is an owned solar generating system that was installed in 2007. Many possible uses include irrigated crops, orchards, dry land farming, livestock or private retreat.