Highly energy efficient with low energy consumption makes this home sustainable by design. Built into the berm, the south facing wall of high SHGC windows allows the sunlight to warm the concrete floors for passive solar gain. The extended roof overhang clips the sunlight in the summer trajectory. Paired with the curving wall shape which mimics the arc of the sun, the house remains cool in the warmer weather. The Eco-friendly 50 year metal roof protects this modern, friendly, open-concept yet cozy home.