A 43” diameter heritage pecan guided the plan of this neighborhood-scaled, modestly-priced, single-story, L-shaped house. In Austin’s seemingly perpetual drought, the goal was to create a symbiotic relationship between house and tree: to complement, not combat each other. The roof’s east/west parallel ridges create a valley directly across from the base, where water is collected at a grate, nourishing the tree. The roof also maximizes south facing surfaces, elevated at 15 degrees for future solar collection. The open, public spaces of the home maximize the north-south light. The private zone of the bedrooms and bathrooms include a generous gallery; its angled walls and large sliding doors are faceted about the tree. The pecan becomes a central focus for indoor and outdoor living, participating in the house in both plan and section. The design welcomes and nurtures the tree as integral to its success. Photo Credit: Chris Diaz