Stealth density in suburbia: Step House a sustainable first home for Gen Y Australians G en Y / Step House by David Barr Architects and Landcorp may look like a single-family residential home, but its Colorbond steel and fibre cement fa├žade hides what lies within: three separate apartments. First conceived in response to a Gen Y Demonstration Housing competition in 2013, which invited young West Australian architects to submit ideas that encapsulated the Gen Y lifestyle and living requirements, the Gen Y House is out to prove that medium density can be achieved in a single home lot. Geraldine Chua