Exterior, Wood Siding Material, Metal Roof Material, House Building Type, Gable RoofLine, and Small Home Building Type Scott and Lauren plan to track the energy use of their new-build’s electric equipment and appliances. The data will inform the size of their photovoltaic array they'll add to offset the energy costs of the ADU and the bungalow.  Photo 19 of 20 in Budget Breakdown: A Portland Couple Design and Build a Compact Home For $222K