G'day.
Every second headline this week is some version of "is this the crash?" — and almost none of them show you the numbers underneath. So let's do it properly.
Below are three scenarios for Australian dwelling values through to the end of 2027. Each one is built on data published in the last few weeks, not vibes. I've given each a rough weighting, the specific trigger that would confirm it, and what it means if you're holding property rather than trading it.
Fair warning up front: this is scenario modelling, not a forecast. Nobody — not me, not the RBA, not the bloke on the six o'clock news with a laser pointer — knows which one lands.
First, the five facts everything hangs off
Before the scenarios, here's the actual state of play as of 30 July 2026:
| What | Number | Source |
|---|---|---|
| Headline CPI, year to June | 3.8% (down from 4.0% in May, 4.6% in March) | ABS, released 29 July 2026 |
| Trimmed mean (RBA's preferred measure) | 3.6%, unchanged | ABS |
| Housing's contribution to CPI | +6.8% — the single largest contributor | ABS |
| Cash rate | 4.35%, after three rises this year and a June pause | RBA |
| National dwelling values, June | −0.4% for the month, −0.7% for the quarter | Cotality |
Two more that matter just as much:
- Credit has collapsed faster than prices. NAB reported home loan applications down 15% in a single quarter, and national lodgements are down roughly 26% since early February (full breakdown here).
- Treasury has formally warned the government that economic risks from the continuing Middle East war are increasing, as the US–Iran memorandum of understanding unravelled and the conflict spread into the Red Sea. The fuel excise discount is scheduled to end on 2 August, with an extension not ruled out.
And the context nobody should forget: national dwelling values rose 8.6% in 2025, adding about $71,400 to the median home. A 0.7% quarterly dip is not, by itself, a crash. It's giving back three weeks of last year.
Scenario 1 — "The slow bleed" (I'd weight this ~45%)
What happens: Inflation stays sticky around 3.5–4%, the RBA holds at 4.35% through 2027 rather than cutting, and the credit contraction keeps grinding. Values fall a further 4–7% nationally over 18 months, concentrated in Sydney and Melbourne, with established stock underperforming new builds because of the negative gearing split.
Why it's the base case: Because it's already happening. Sydney is down 3.7% from its January peak. Cotality's July chart pack has sales volumes cooling rapidly since late 2025 and auction clearance rates fading. The May Budget removed negative gearing from established purchases, and the SMSF limited-recourse borrowing ban closed another buyer channel weeks later. You don't need new bad news for this scenario — you just need nothing to change.
The trigger to watch: The August and September Cotality monthlies. If June's −0.4% becomes three consecutive negative prints with widening breadth across capitals, this is the path.
What it means for you: Yields improve while values sag — falling prices plus tight rental markets and rising rents is genuinely the first yield expansion Australian investors have seen in about four years. Painful on paper, fine on cashflow, brutal at refinance time if your LVR is thin.
Scenario 2 — "The oil shock re-run" (~20%, and the one nobody's pricing)
What happens: The Red Sea disruption deepens, Brent pushes back above US$100 the way it did in March when the entrance to the Persian Gulf was closed for the first time in history, the fuel excise discount lapses on 2 August, and headline inflation reverses back through 4%. The RBA — which has been explicit that it will not rescue property prices, and that struggling borrowers are a matter for lenders, not monetary policy — hikes again. Values fall 10–15% peak-to-trough in Sydney and Melbourne.
Why it's plausible: This is not a hypothetical mechanism; it already ran once this year. March's oil spike fed straight into the March CPI print of 4.6% and the RBA hiked into it. The RBA's own Assistant Governor devoted an entire May speech to how the Bank thinks about inflation in the context of the Iran conflict. Treasury told the Treasurer this week the risks are getting worse, not better. The only reason markets have written off an August hike is a single soft monthly CPI — and the trimmed mean underneath it didn't move.
The trigger to watch: Petrol at the bowser in the second half of August. If the excise discount ends and pump prices jump while the Red Sea situation deteriorates, the September quarter CPI gets ugly and November's RBA meeting becomes live.
What it means for you: This is the scenario your stress-test exists for. Model every loan at 4.60%, not just the biggest one. If a 25bp rise breaks your position, you're not an investor with a portfolio, you're an investor with a margin call on a slow timer.
Scenario 3 — "The squeeze reverses" (~35%, and it's more likely than the doom crowd admits)
What happens: June's CPI print turns out to be the turn, not a blip. Inflation keeps easing through spring, the RBA holds and then starts cutting in the first half of 2027, and every buyer currently sitting on their hands with pre-approval in a drawer comes back at once. Values are flat for two more quarters and then rise 5–8% through 2027.
Why it's more credible than it sounds: Headline inflation has fallen from 4.6% in March to 4.0% in May to 3.8% in June — that's a trend, not noise. Westpac dropped its call for further hikes this year off the back of the June quarter data, noting the share of items running above 3% narrowed. Markets moved the odds of an August rise to near zero. And critically, the fall in prices this year has been driven by credit availability, not by forced selling. Arrears haven't blown out. Nobody is being marched off their property. When credit constraints ease, that demand doesn't evaporate — it queues.
Add supply: the SMSF borrowing ban and the negative gearing changes both reduce new construction feasibility, which Master Builders modelling flagged as a medium-term supply hit. Fewer dwellings arriving in 2028 into a country still running strong population growth is not a bearish setup.
The trigger to watch: Two consecutive trimmed-mean prints below 3.5%. That's the number that unlocks a cut. Headline CPI is theatre; the trimmed mean is the score.
What it means for you: If you sell into Scenario 1 fearing Scenario 2, and Scenario 3 turns up, you've crystallised a loss plus CGT under the new rules to buy back in higher. That's the expensive mistake, and it's the one most commonly made in exactly this kind of market.
What all three scenarios have in common
Here's the useful part. Notice that in every scenario above, the same handful of things determine whether you personally do well:
- Your break-even rate. In Scenario 2 it's survival. In Scenario 1 it's your refinance outcome. In Scenario 3 it's how much of the upside you can actually hold onto. Know it to the basis point.
- Your worst property, not your average. A two-speed market makes portfolio averages actively misleading. Sydney apartment down 4% plus Brisbane house up 2% reads as "flat" and tells you nothing about where your risk sits.
- Your after-tax position under the post-May rules. The negative gearing arithmetic changed on 12 May. If you haven't re-run it, run it — the negative gearing calculator will give you the real number in about two minutes.
- Your operating costs. Rates, wars and policy are out of your hands in all three scenarios. Insurance renewals, agent fees, land tax thresholds and interest-only expiry dates are not.
- Whether you can actually see your numbers. This is the one that separates people who act well in volatility from people who freeze.
The honest conclusion
The most likely outcome isn't a crash and it isn't a boom. It's a grinding, uneven, two-speed market where the national headline number is close to useless and your own position is everything. The dates that decide which scenario you're living in are 10–11 August (RBA), 26 August (July CPI), and late September (the first clean quarter of post-excise, post-SMSF-ban data).
You can't forecast any of it. What you can do is hold a portfolio that survives more than one version of the future — diversified, not maxed out on a single loan, and documented well enough that you can answer "what's my actual position?" in minutes instead of losing a weekend to it.
That's the whole reason PropAlly exists. It's the portfolio command centre for Australian property investors — every property, loan, rent payment, expense and valuation in one place, whether an agent manages your properties or you do it yourself. In a market like this, the investors who make good decisions aren't the ones with the best forecast. They're the ones who can see their own numbers clearly. Have a look at the portfolio command centre.
Stay sharp.
— Tob
This article is general information based on publicly available data as at 30 July 2026, not financial or tax advice. Scenarios are illustrative modelling, not predictions. Talk to a licensed adviser before acting.
