Situated on 49+ rolling acres, this custom built underground home on the South side of a hill is engineered to be energy efficient with the option to live off-grid. Sun is the primary heat source plus contra-flow masonry woodburning heater with bake oven, and wood stove in the bedroom. A PV array and wind turbine supply power for the batteries, with excess power net-metered to the utility. Natural gas from an on-site well provides energy for cooking, refrigeration, tankless water heater. An enthalpic energy recovery ventilator provides the home with fresh air. Additional buildings include a heated finished cottage/bunkhouse, 30x24 heated garage, 50x30 2-story Quonset, w/oversized 2 car garage, 2nd floor loft and commercial grade heated workshop. Mostly wooded, a hidden pond attracts wildlife.This property can be purchased with an additional 37+adjacent acres across the road, 0 Eaton Rd.