This article presents data on floor area and site area for new private sector houses approved in Australia's five largest capital cities across a 10-year period from calendar year 2012 to 2021. The data presented in this article are sourced from the Australian Bureau of Statistics' (ABS) monthly publication 'Building Approvals, Australia'. These data are available in the Building Approvals 'Average Floor and Site Area, 2012 to 2021' datacube located in the data downloads section of Building Approvals, April 2022.
Australians are building houses on smaller blocks: the average site area of new house approvals decreased considerably over the last 10 calendar years, by 64 square metres (-13%), whilst the average floor area decreased by only 3 square metres (-1%). Some states have seen a stabilisation in the decrease in average site area over the last two years.