Builder: Parry Pichelmann Architect/Designer: DNA Architects These two newly constructed houses on one block are the homes of a husband and wife (in their 70s) and of their son and his family of five people. Both houses are solar passive featuring the sustainable building principles of orientation, insulation, thermal mass and ventilation.The houses are constructed of 100mm “green board”, have double-glazed windows and uPVC window frames. House 2 has a burnished concrete floor and other thermal mass features. Extensive use has been made of reclaimed materials from the previous dwelling, such as hardwood framing timbers for pergolas, benchtops and furniture, and Canberra reds for paving. The houses have won several building industry awards including MBA’s Medium Density and Green Living categories and HIA’s Greensmart Energy Efficiency category. In the space between the houses is a shared workshop and a 55,000 litre underground water tank. There is also a large shared garden area for growing vegies and keeping chickens.