Australia's property downturn spreads to 93% of suburbs: what August's price falls mean for first home buyers

Cotality's Home Value Index for August 2026 confirms what a lot of would-be buyers have been sensing for months: this is not a Sydney and Melbourne story anymore. National dwelling values fell 0.9% in August, the fifth consecutive monthly decline, and ABC News reported the downturn now stretches across roughly 93% of capital city suburbs. Cities that were still posting gains earlier this year, including Brisbane, Adelaide and Perth, are now recording monthly falls of their own. For first home buyers, a market moving in one direction, even a soft one, changes the calculation.

What actually happened in August

Sydney led the falls, down approximately 1.4% for the month and now around 7% below the peak values recorded earlier in the year. Melbourne fell approximately 1.1%. Brisbane, which had been recording strong monthly gains at the start of 2026, posted a decline of around 1%, and Adelaide and Perth each eased by around 0.8%. Cotality's research director pointed to a combination of weaker buyer demand and higher advertised stock levels weighing on the market, particularly in Sydney.

This is the fifth straight month of national declines, and analysts covering the release note that if the current pace continues, this downturn could become one of the steeper corrections on record. That does not mean prices are collapsing everywhere at once, but it does mean the "two-speed market" story that dominated earlier in 2026, weak Sydney and Melbourne versus resilient everywhere else, is looking less clear cut.

Why the downturn is broadening

A few forces appear to be compounding at once:

• Higher borrowing costs: The RBA has lifted the cash rate more than once in 2026, and each increase feeds through to serviceability assessments and monthly repayments, cooling demand across every capital city, not just the most expensive ones.
• Investment tax changes: Recent changes to negative gearing and capital gains tax settings for property investment have altered the calculation for investor buyers, which affects listing volumes and competition in markets that investors previously favoured.
• More listings, softer demand: Advertised stock has been running above average in several cities this year, which gives buyers more choice and less urgency, a combination that tends to pull prices down even without a single dramatic trigger.

What this means for first home buyers

A broad-based cooling market is not automatically good or bad news. It depends heavily on your own timeline, deposit progress and borrowing capacity, and it is general market information rather than advice about your specific situation. Some practical things worth thinking through:

• Softer prices can widen your options. If your borrowing capacity has been assessed against a price cap for a government scheme, a market where more listings sit below that cap may mean a larger pool of eligible properties than a few months ago.
• Falling values do not mean falling repayments. Rate settings, not list prices, drive what you pay each month once you have a loan. A cheaper purchase price with a higher rate can still leave you worse off than a more expensive purchase at a lower rate, which is why comparing your full financial position matters more than watching the index alone.
• Timing the exact bottom is not realistic for most buyers. Even professional forecasters disagree on how long this downturn runs. A more useful approach for most first home buyers is comparing the cost of buying now against the cost of waiting and continuing to rent, based on your own numbers.
• Vendor negotiating position may be shifting. In a softer market with more stock on the books, buyers can sometimes negotiate more room on price or settlement terms, though this varies suburb by suburb and property by property.

None of this changes what a lender will actually approve you for. Your own income, expenses, deposit and the interest rate you are assessed at still set the ceiling on what you can borrow, regardless of which way the broader index is moving.

Run the numbers

Use these tools to see how a cooling market interacts with your own situation, rather than relying on headline figures alone:

• Rent vs Buy Calculator - compare the cost of buying now in a softer market against continuing to rent and save for longer
• Borrowing Power Calculator - see how much you may be able to borrow at current rates, independent of where property prices are heading
• Am I Ready to Buy? - work through whether your deposit, income and expenses line up for a purchase in the current market