Single Family Home for sale by owner in Iowa Falls, IA 50126. Energy costs have you concerned? New construction planned for energy savings! An optimal job opportunity saw us move to another state before we could complete construction of our dream home. Based on geothermal HVAC via a pump-and-dump well system with in-floor basement heating. The basement, liferoom & garage walls are Integrated Concrete Forms - 4-6" of poured concrete between 2 1/2" of styrofoam insulation inside & out. Comfortable... See site for full property details.