In the Sydney, Australia, neighborhood of Rozelle, architect Christopher Polly has renovated a house with green design in mind. By opening up the plan, adding floor-to-ceiling sliding glass walls to the rear of the house, deftly organizing windows, and repurposing elements of the original structure, Polly has created a residence that's attuned to its environment. Windows allow light and air to enter the house, and Breezway Altair louvers abound, as does Viridian Comfort Plus low-e glass. Photo by Brett Boardman. Photo by Brett Boardman.