House Plan 6506 has a perfectly rectangular footprint and a single gable roof—this simplicity minimizes corners and keeps the cost to build in check! Inside, you'll find 2,000 square feet with open living space across the front and all four bedrooms off a hallway in back. Straightforward designs are already efficient because they reduce surface area and have fewer irregular points that are difficult to insulate well, but if you want to save even more on utilities, select the ENERGY STAR® approved package!