This modest upper avenues, brick bungalow was feeling cramped for this couple. Taking advantage of its sweeping views to the south and the Wasatch mountains, the addition was situated to not compete with the original style of the home as seen from the street. The southern exposure is central to the design of this addition. The addition has glass that runs along the entire south face, making it an efficient passive solar system that can provide warmth to the home throughout the day. As the sun drops behind the Oquirrh’s to the west, an insulated, hinged metal frame folding screen, closes in front of the glass to retain the stored heat. The walkout basement’s foundation is constructed of ICF’s (insulated concrete forms) and it sits atop a 16 inch thick thermal mass of crushed stone and stained concrete. This is, its passive heat source. The home also has a Russian fireplace to complement the passive solar component. Hence, this virtually enables the entire building to be heated without fossil fuel. The decks that overhang the southern glazing are integral to the energy efficient design and are dimensioned appropriately to block out the intense summer sun, yet allow the lower angle, winter rays to warm the thermal mass. Finally a single thermal solar panel meets most of the domestic hot water needs.