While listings are increasing in most of the country, Perth’s supply of homes for sale is tanking. Canberra (+33.7 per cent), Melbourne (+21.7 per cent) and Sydney (+17.4 per cent) have seen the largest increase in total listings over the past year among capital cities, while Perth (-20.2 per cent), Adelaide (-6.9 per cent) and Darwin (-2.4 per cent) were the only capitals to record a fall.