ICF of 6” and 10” cores constitute a tight vertical thermal enclosure in five zones. Elongated casement windows, recessed back 22 inches on southeast and southwest elevations and overall site orientation restrict direct hot desert sun penetration. Large mid-section glass windows and triple-pane doors are also set back and further protected by upward angled wing walls, horizontal spandrels and upper roof overhangs. No opening faces directly east, south or west. Concealed roof TJL’s house closed cell and high-density fiber insulation. Exposed interior mid-section TJL’s are protected by 6” deep closed cell insulation and the array of solar panels above. Curved metal roofs deflect heat transfer at the wings. Together, a consistent 69-75 degree F range is maintained. Dual tankless water heaters, zoned HVAC and ceiling fans balance energy efficiency with minimal consumption. Exterior stone is locally sourced, lighting is LED throughout, and interior finishes are from recycled and repurposed materials.
The house sits on the smallest elevated corner lot, 0.6 acres, in the Ventana Canyon community. A simple juxtaposition of solids, voids, angles and curves reflects characteristics of the surrounding Catalinas. Southwest facing views to the city and northeast facing views to the mountains were important to maximize, as was the use of energy efficient materials. Respecting close proximity to existing neighboring houses was also critical. The challenge of maximizing lot usage, building height and easy vehicular access on an undulating lot was overcome by receiving early approval from zoning officials to an alternative interpretation of their requirements. The center see-through two-story glass mid-section highlights the nerve center every home possesses, namely the kitchen. Open dining and living areas flank each side. High above, a 7kw solar panel system generates an excess of annual electricity usage. East and west wings, defined by curved standing seam metal roofs, house sleeping quarters, individual studios and a TV room. Laundry, bathrooms and vertical circulation are in the flat roofed areas between the wings and mid-section. East, south and west windows are substantially recessed to minimize direct sun exposure. A second-floor bridge connects the wings and provides HVAC between projected structural steel fins. Open-web trusses between floors enable ductwork without secondary framing or soffits. A covered deck over a 2-car plus golf-cart garage provides shaded outdoor space while the southwest facing pool accentuates the valley view. Stucco, native Arizona stone and teal-colored accent steel complete the aesthetic, respectful of the surrounding desert.