The downturn follows federal government adjustments to capital gains tax arrangements announced in May, designed to curb runaway price growth that has long locked prospective buyers out of the market. According to property research firm Cotality, the national home value index reached its peak in March and has since slipped 0.7% over the June quarter. Sydney led the decline with a 1.2% drop, while Melbourne followed with a 1.0% decrease. Even mid-sized capitals, which previously boasted aggressive growth, are stalling; Adelaide saw values remain stagnant, while gains in Brisbane and Perth slowed to a marginal crawl compared to the double-digit momentum seen earlier this year.

Beyond price data, the broader market architecture is weakening. Auction clearance rates have struggled to stay above 50% since late May, falling into the low 40% range by the end of June. Transaction volume mirrors this fragility, with capital city home sales for the second quarter estimated at 16.2% lower than the same period last year. Research director Tim Lawless noted that the rapid downward revisions reflect a market in the midst of a fundamental transition. As economists openly debate the conclusion of the long-standing property super cycle, these metrics suggest that the current slump is not a temporary dip, but a structural shift in the Australian housing landscape.