The Long Boom: A History of Australian House Prices, and Where They Go From Here

Ask an Australian homeowner over fifty how much they paid for their first house, and the number will sound almost fictional to anyone under thirty. A Sydney house that sold for $68,850 in 1980 carried a median price of $1.29 million by 2022. That’s not simply inflation at work — it’s the signature of one of the developed world’s most persistent, and most unevenly distributed, property booms.

I’ve spent 30+ years on the bank side of Australian lending, watching this play out from inside the industry. This is the long story of how we got here, what’s happening right now in September 2026, and what the genuine evidence says about where prices go next — without pretending the forecasters agree with each other more than they actually do.

A Market That Moves in Bursts, Not a Straight Line

The instinct to picture house price growth as a smooth upward slope is understandable — and wrong. Stripped of inflation, the real national median house price roughly doubled between the early 1980s and 2003, then doubled again between 2003 and 2022. But that growth arrived in concentrated bursts, not steady annual increments. The first halves of the 1980s and 1990s were largely flat; the second halves of both decades delivered the bulk of that era’s gains, driven by falling inflation and financial deregulation that let households borrow more against the same income.

Median House Prices by Capital, 1980-2022 (nominal $)

Source: Abelson & Joyeux (2023), splicing pre-2003 land-titles data with ABS Cat. 6432 from 2003.

The major cycles worth knowing:

• Early 1980s recession (1981-83): Drought, a global downturn, and a domestic wages breakout pushed unemployment above 10%. Nominal mortgage rates sat in double figures continuously from 1980 to 1996.
• 1980s deregulation boom: Floating the dollar in 1983, foreign banks entering the market, and the removal of lending controls fed a strong back-half-of-decade surge, alongside the RBA lifting the cash rate from around 10% to 18% over 1983-85.
• “The recession we had to have” (1989-91): Standard variable rates peaked near 17-19%. Melbourne, which had a late-1980s investor-speculation boom, suffered years of stagnation afterward.
• 1990s-2000s disinflation boom: As the standard variable rate fell from ~17% (1989) to ~7-8% (late 1990s), borrowing capacity expanded dramatically. The 1999 introduction of the 50% CGT discount supercharged investor demand — real national prices jumped roughly 45% between 2000 and 2003.
• 2000s mining boom: Perth and Darwin surged on resources-sector wages. When the boom unwound, they were the only two capitals to go backwards over the following decade.
• GFC (2008-09): National values fell roughly 10-15% at the trough before the market rebounded by 2010, helped by the Rudd government tripling the First Home Owner Boost and aggressive RBA rate cuts.
• 2020-2022 pandemic boom: Emergency-low rates drove national growth of roughly 24.5% in 2021 alone.
• 2022-23 rate-hike correction: Thirteen consecutive RBA hikes triggered a sharp, shallow national fall — CoreLogic called it “comparable with the onset of the GFC” — before the market defied expectations and re-accelerated.

A Tale of Cities, Not One Country

The single most important corrective to the national headline is that Australia doesn’t have one housing market — it has eight, moving on different clocks. Over the five years to February 2026, Perth dwelling values rose 90.3%, Brisbane 86.1%, and Adelaide 79.9%, while Melbourne managed just 11.8% — a 78-percentage-point spread within the same country, the same interest-rate environment, the same five years.

Where Things Stand Right Now: September 2026

This is where the two-speed market becomes impossible to ignore. Cotality’s national Home Value Index fell 0.9% in August 2026 — a fifth consecutive monthly decline, leaving the index 3.6% below its March 2026 peak, with 93% of capital-city suburbs recording falls. And yet:

Sydney ($1,222,718, -4.6% year-on-year) and Melbourne ($786,718, -4.7%) are in an outright correction, while Perth ($999,987, +15.6%), Brisbane ($1,080,142, +10.8%) and Adelaide ($937,207, +8.6%) keep pushing toward records. Brisbane, Perth and Adelaide have all now overtaken Melbourne, which sits as just the sixth most expensive capital — an order that would have looked unthinkable a decade ago.

The Double Shock Behind It

Two things landed on the market within weeks of each other in 2026. First, the RBA — after cutting three times through 2025 — reversed course entirely, hiking in February, March and May to a 4.35% cash rate, citing inflation running at 4.2-4.6%. As of September, the major banks now see the next move as a possible further hike rather than a cut, a notably hawkish shift from where forecasts sat earlier in the year. Second, the May 2026 Federal Budget legislated the most significant property tax change in a generation (more on that below).

The combined effect shows up clearly in the numbers: auction clearance rates have sat below 50% nationally for most weeks since late May, sales volumes are down roughly a third year-on-year, and national housing affordability — measured as the dwelling-value-to-income ratio — sits near record levels at 8.2, well above the 20-year average of 6.8.

Sydney’s ratio is closer to 9.6. Demographia’s global affordability rankings put Sydney as the second least affordable major market in the world, behind only Hong Kong.

What the Forecasters Actually Say (and Where They Disagree)

Every major forecaster now expects a soft-to-falling 2026-27 for the biggest two cities, and continued (if decelerating) strength in the mid-sized capitals. Where they diverge is magnitude — and it’s a wide gap.

• ANZ (August 2026): capital-city prices to fall 4.3% in 2026 and 3.4% in 2027 — a peak-to-trough decline of roughly 10.6%. Sydney and Melbourne tipped to lead the recovery once rates fall in 2027.
• NAB (August 2026): a national fall of roughly 5% in 2026, revised down from -2% just a month earlier — Sydney and Melbourne could fall up to 10%.
• CBA: cut its dwelling-price growth forecast to 3% for the year to December 2026 (from an earlier 5%), then further to roughly flat by mid-year.
• Westpac: the most hawkish on rates, now expects dwelling prices to stall flat nationally for 2026, down from an earlier forecast of 6% (itself already downgraded from 9%).
• Domain (FY27, June 2026): the clearest city-by-city split — Sydney houses -7% to -3%, Melbourne -8% to -4%, Brisbane +3% to +7%, Adelaide +4% to +8%, Perth +5% to +9%.
• SQM Research: swung from a November 2025 base case of national +6% to +10% growth down to just 0-3% after the rate-hike and inflation shock — a striking reversal that shows how fast the outlook deteriorated through the year.

Where they agree: the two-speed pattern persists, affordability is now the binding constraint everywhere, and the turning point is tied to the first RBA rate cut — most now pencilled in for around mid-2027.

The Policy Shock: Negative Gearing and CGT Reform

The May 2026 Federal Budget legislated real changes to how investment property is taxed, effective from 1 July 2027:

1. Negative gearing on established residential property bought after 7:30pm on 12 May 2026 can no longer offset losses against salary or other income — losses are quarantined against rental income or future capital gains instead. New-build purchases remain fully exempt.
2. Capital gains tax: the 50% discount is being replaced with cost-base indexation plus a 30% minimum tax rate on real (inflation-adjusted) gains for established-property investors. New-build investors can choose either method.
3. Anything already held at 7:30pm on 12 May 2026 is grandfathered under the old rules until sold.

What It’s Actually Expected to Do

Here’s where the modelling gets genuinely interesting — and where the growth-vs-level distinction matters. Treasury’s own estimate is that the changes cause house prices to “grow by around 2 per cent less over a couple of years relative to no policy change” — a slowdown in the pace of growth, not a 2% price cut. CBA’s independent modelling puts prices “about 3% lower than they otherwise would have been” — a level effect using a modified RBA pricing model. Grattan Institute’s estimate sits similarly modest, at roughly 1-2%.

Where the real disagreement lives is on the supply and rent side. Property-industry-commissioned modelling has warned the changes could “slash dwelling starts by tens of thousands of homes, pushing rents 2.4 per cent higher by 2029-30” — a materially more pessimistic view than Treasury’s own estimate of a rent impact of “less than $2 per week.”

The early behavioural signal is already visible: ABS lending data shows investor loans fell 8.6-10.2% in the June 2026 quarter — sharper than the 3.3% fall for owner-occupiers — while investor lending specifically for new-home construction hit a quarterly record. That’s arguably the policy working exactly as designed: nudging investor capital toward new supply rather than away from the market altogether.

The Structural Drivers Behind It All

Three forces recur throughout this entire history, and most economists agree they explain the long-run trend better than any single year’s headlines.

Population and Migration

Net overseas migration peaked at a record 538,000 in 2022-23, has since eased to 306,000 (2024-25, per the ABS), and is projected to keep normalising toward roughly 225,000-235,000 from 2027-28. Even at that lower pace, Australia adds far more people each year than its housing stock can comfortably absorb — and migrants typically rent for years before buying, keeping rental demand elevated regardless of the ownership-market cycle.

The Supply Gap

This is arguably the single most important, and most persistently under-discussed, driver.

The National Housing Supply and Affordability Council reports just 177,000 completions against estimated demand of 223,000 in 2024. Over the full 2024-2029 National Housing Accord period, the Council now forecasts only around 938,000 of the targeted 1.2 million homes will actually be built — a cumulative shortfall of roughly 262,000 homes, close to the population of Canberra. As the Council’s chair put it: “for every five homes we need, we’re only on track to build about four.”

Household Debt and Interest Rates

The RBA’s own long-run research is unambiguous on this point: the 1990s-mid-2000s price surge was driven largely by the rise in household debt-to-income ratios, itself enabled by financial deregulation and falling nominal rates that let households service far larger loans against the same income. That legacy is exactly why Sydney and Melbourne — the two most debt-leveraged, highest-priced markets — are the ones falling hardest now that rates have moved the other way, while the less-leveraged mid-sized capitals hold up.

The Honest Conclusion

Anyone asking “will house prices go up or down” is really asking two different questions wearing the same words. In the next 12-24 months, the honest answer is: it depends entirely on which city, and the professional forecasters disagree meaningfully with each other on the magnitude — ANZ’s -10.6% peak-to-trough versus Westpac’s flat call for 2026 alone is a wide gap between two major banks looking at the same data.

Over the coming decade, the answer most of the underlying evidence supports is more confident: the structural forces that have driven prices upward for more than forty years — migration, chronic undersupply, and a housing stock that has never kept pace with population growth — show no clear sign of reversing, even as the shorter-term cycle of interest rates and policy settings pushes individual cities up or down in any given year. As this history shows, that’s exactly the pattern this market has followed since 1980 — growth in bursts, not a straight line, and never the same story in every city at once.

Frequently Asked Questions

Will Australian house prices crash?

No major forecaster is currently predicting a sustained, broad-based crash. Most expect modest falls in Sydney and Melbourne through 2026-27, continued (if slowing) growth in Perth, Brisbane and Adelaide, and a turning point tied to the RBA’s first rate cut, expected around mid-2027.

Why are Sydney and Melbourne falling while Perth and Brisbane are rising?

Sydney and Melbourne are the most expensive, most debt-leveraged markets, making them most sensitive to the 2026 rate hikes. Perth, Brisbane and Adelaide remain genuinely undersupplied relative to demand, which has kept them resilient even in a higher-rate environment.

How will the negative gearing changes affect house prices?

Treasury estimates a roughly 2-percentage-point reduction in price growth over a couple of years; CBA’s independent modelling suggests prices around 3% lower than they otherwise would have been. Both are modest compared to the structural forces of migration and undersupply.

Sources

Abelson & Joyeux (2023, ANU Tax and Transfer Policy Institute); RBA Bulletin (September 2015, “Long-run Trends in Housing Price Growth”); Cotality Home Value Index (August 2026); ABS Lending Indicators and Overseas Migration data; National Housing Supply and Affordability Council, State of the Housing System; Australian Government Budget 2026-27 tax reform factsheets; ANZ, NAB, CBA, Westpac, Domain, and SQM Research economic and property forecasts (2026).

Related Reading

• What Actually Happens to Your Repayments When the RBA Moves
• Fixed or Variable? The Question Every Borrower Is Asking Right Now
• Bank Valuation vs Market Price: Why They Never Match

Written by Michael Wignall, who’s spent 30+ years in banking and home lending across the ACT, Illawarra, and Riverina regions of NSW.