What this measures
The mean house price is the average value of a residential dwelling in Australia - houses and apartments together - taken from the ABS quarterly Total Value of Dwellings release. The ABS divides the total value of the country’s residential dwelling stock by the number of dwellings, so the figure moves with sale prices and with the mix of homes being built. It replaces the Residential Property Price Index, which the ABS discontinued after 2021.
How to read this figure
The figure is a stock average, not a market price. A sale price describes the small fraction of dwellings that changed hands; this describes all of them, including the overwhelming majority that were never on the market.
That distinction is not a technicality, and the Bureau of Statistics flags it against its own publication. The same release carries a median, calculated from established house and attached dwelling transfers during the quarter, and the Bureau tells users to "exercise caution when comparing the median prices and the mean price of dwellings". Two numbers on one page, computed over two different populations, and the gap between them is not a finding about the market.
The less obvious half is what that does to the denominator. Because the figure divides by the number of dwellings in the stock, new dwellings entering it change the bottom of the fraction as well as the top, so a period of heavy construction at the cheaper end pulls the average down without any existing home losing value. A sale-based measure has no equivalent behaviour, because nothing enters its denominator except a sale.
Revisions are shaped by how slowly transactions become visible. Sales data reaches the Bureau from state and territory land titles and Valuers-General offices, and there is a lag in that transmission, so the current quarter's median and transfer count are published as preliminary. The two quarters behind it are still open to revision, and the third most recent quarter is the point at which an estimate is considered final. Working on data available in 2006, the Reserve Bank noted that Australian settlement typically took between one and three months, and that where dearer houses settle more slowly an early median estimate is biased downwards.
For a household the figure matters through the balance sheet rather than the shopping list. A stock average moves the notional value of what is owned and the equity a lender assesses against it, and it is emphatically not the number a valuer will put on one particular property, since it describes a national stock and a valuation describes a single dwelling.
The cadence follows from the same lag: quarterly, released about twelve weeks after the end of the quarter it describes. That is a longer wait than the private indices impose, and the difference is a deliberate trade of timeliness for completeness rather than a shortcoming.
Longer read: Why house price measures disagree. Three methods are used to measure house prices and each controls for something the others do not. The starting point is stranger than the methods: a median can move a long way in a quarter when not one property in the country has changed value.
Related indicators: Wage growth (WPI) · Inflation rate (CPI) · RBA cash rate - or the whole set on the Australian economy hub. To put this figure to work on your own numbers, use the stamp duty calculator. For how figures like this feed into the exchange rate, read what moves the Australian dollar.