In 1994 the Wellington City Council opened the ECO House in Newtown showing residents how to be energy efficient using everyday materials. This environmentally friendly house was part of a competition and won by the architects Anna Kemble Welch and Martin Hanley. The house balanced "eco" ideas with architectural design. The application of these ideas into this compact and functional house made full potential of energy efficiency and passive solar heating. Factors such as the health of the occupants were as important as the relationship of the house with its natural environment. Many features of the ECO house can be successfully replicated in an exisitng house.