Granny flats gain traction as density solution: An estimated 3.6 million suburban lots across Australia are large enough to accommodate a second dwelling, and the granny flat boom is quietly reshaping the housing supply conversation. Sisters Monica and Nola McKay are among a growing wave of downsizers choosing to build secondary dwellings on family lots — a low-friction path to density that sidesteps the political minefield of high-rise rezoning.
