Welcome to a truly exceptional custom-built country estate on 12.61 acres just outside the Village of Erin. In housing, not all construction is created equal, and this thoughtfully designed 2008 bungalow stands apart. Its complete exterior envelope-both foundation and above-grade walls-is constructed with insulated concrete forms (ICF), not simply an ICF foundation. Combined with R40 insulation, this premium construction delivers outstanding energy efficiency, durability, quiet and year-round comfort. A substantial investment in geothermal heating and cooling helps keep energy use low, while an emergency propane generator provides valuable backup power. The Seller reports operating costs of less than $200 per month, although costs will vary by use.Meticulously maintained and positioned to capture sweeping hillside and valley views, the property offers privacy and potential for hobbyists, equestrian enthusiasts or a home-based business. Approx 3,800+ sq ft of finished living space includes 3+1 bedrooms, 3 bathrooms and a finished walkout basement. The main level features soaring ceilings, cherry hardwood, crown moulding, designer finishes and expansive windows. The chef-inspired kitchen offers granite counters, custom cabinetry, premium appliances, a large island and sun-filled breakfast area. The family room features a striking mansard ceiling, recessed propane fireplace and French doors to an expansive two-tier deck with glass railings. The primary suite includes a spa-inspired ensuite with whirlpool tub and glass shower. The walkout lower level offers a bedroom, bathroom, large family room and games/home-theatre area with wet-bar plumbing. A detached 24' x 32' workshop is insulated, propane-heated and equipped with running water. A rare combination of premium construction, efficiency, space and rural beauty.