Could premium house prices boom again?
The budget just made it more likely
Photo by Rilla Paris on Unsplash - how beautiful is Gordon’s Bay from the air?
Last night's federal budget confirmed what we all kinda knew. The 50% CGT discount is gone from 1 July 2027, replaced with cost base indexation and a 30% minimum tax on capital gains. Negative gearing on established residential properties acquired after budget night is restricted — losses can no longer be offset against wages and salary, only against future rental income. New builds remain exempt. Existing investors are fully grandfathered.
The headlines have focused on affordability and first home buyers. But the structural shift this creates inside the Sydney premium market is more nuanced than the government's framing suggests — and for buyers of family homes in supply constrained suburbs like Bronte, Clovelly, Coogee, Mosman and Cremorne, the implications are worth thinking through carefully.
What the budget actually does
From 1 July 2027, the 50% CGT discount will be replaced with cost base indexation and a 30% minimum tax on net capital gains. For established residential properties acquired after 7:30pm on 12 May 2026, negative gearing losses will only be deductible against rental income or capital gains from residential property — not against wages or other income. Eligible new builds are exempt. Baker McKenzie
Properties already owned on 12 May 2026 are fully grandfathered — existing investors won't be affected until they sell. SuperGuide
Crucially, the CGT changes are not limited to property. The removal of the 50% discount applies across all CGT assets held by individuals, trusts and partnerships — including shares, ETFs, and other investment vehicles. Baker McKenzie And that has some interesting implications.
The primary residence just became more attractive than its ever been
Here's the argument that isn't getting made loudly enough. The main residence CGT exemption is completely untouched. Your family home in Rose Bay or Coogee remains entirely capital-gains-free on sale, regardless of how much it appreciates. Meanwhile, every alternative asset class — shares, investment properties, managed funds — just got materially more expensive to exit.
Australia's total residential stock is worth approximately $12 trillion, with around $4.5 trillion of that representing growth since 2020. Around 65% of dwellings are owned by owner-occupiers who are exempt from CGT on their primary residence. That exemption has always been the most valuable tax concession in the system. From 1 July 2027, the gap between owning a home and owning anything else just widened significantly. The Conversation
For a high-income household deciding whether to put $4 million into an investment portfolio or into a family home in Bondi — the tax maths have moved. The home wins by more than it did yesterday.
The investor case for premium Sydney housing was already weak
This is where the impact of the budget reform is most easily overstated at the top end of the market. Gross rental yields across Sydney's Eastern Suburbs average just 1.95–2.32%, meaning a $4 million house returns roughly $80,000 annually before costs. At those yields, these properties were never the investor's preferred vehicle. The Eastern Suburbs investor was always buying a capital growth story, not a yield story — and they were doing it with a negative cash flow position that required the tax concessions to stack up. Levy Property Group
Take Bronte and Clovelly: tightly held, supply-constrained, and primarily owner-occupied. The same is broadly true of Vaucluse, Bellevue Hill, and the premium pockets of Mosman and Cremorne on the Lower North Shore. Eastern Sydney's prestige market suits equity-rich buyers comfortable with lower income returns — investors here were already banking on capital appreciation, not cash flow. Whichrealestateagent
What this means is that the CGT and negative gearing changes, while significant, don't hit the $4–10 million Eastern Suburbs house market particularly hard — because there weren't many pure investors there to begin with. The market was already predominantly owner-occupier. The budget reinforces that existing dynamic, rather than creating it.
Where the investor retreat does matter
The clearer impact falls on established apartments — the Zetland towers, Mascot complexes, and high-density precincts across inner Sydney where investor concentration has historically been high and where the economics of leveraged property investment were already under pressure from interest rates. High-density apartment precincts with significant pipeline supply and heavy investor concentration are already facing price pressure — and the budget adds more headwinds. API Magazine
Around 83% of new investor loans in 2025 were for existing property rather than new housing. That's the pool the policy targets. For that cohort, the capital redirection question becomes real: where does the money go? Some will shift to new builds, where both CGT and negative gearing concessions are preserved. Some will move into shares or other assets. Some will choose to pay down their own mortgage instead. SuperGuide
Which brings us back to the primary residence.
The compounding case for premium, owner-occupier stock
Put this together and the structural argument for premium family homes in supply-constrained Sydney suburbs — Bronte, Rose Bay, Double Bay, Bellevue Hill on the Eastern side; Mosman, Cremorne, Neutral Bay on the Lower North Shore — is incrementally stronger than it was last night.
Owner-occupiers are unaffected by the new rules. The main residence exemption is untouched.
The relative attractiveness of owning your home versus deploying capital elsewhere has improved.
And the investor group that might compete for these properties was already thin.
The real, complicating factors
This isn't a clean bull case.
Rates remain the dominant variable. Three rate hikes have already subtracted 1.5 percentage points from CommBank's 2026 price growth forecasts, with dwelling price growth now expected to slow to around 3% over the year to December 2026. Borrowing capacity for the very owner-occupiers who benefit from reduced investor competition is being compressed simultaneously. CommBank
The lock-in effect cuts both ways. Grandfathering gives existing investors a strong reason to hold rather than sell. This reduces the risk of forced sales, but also creates a lock-in effect — reducing turnover and keeping listings tight. Fewer listings means fewer options for buyers, not more. CommBank
Treasury's own modelling estimates house price growth will moderate to around 4% per annum rather than 6% in the near term. The government is explicitly trying to slow price growth — not accelerate it. SBS
And legislative passage is not guaranteed. The changes still require crossbench support in the Senate, with the Coalition calling it a broken promise and the Greens arguing the grandfathering doesn't go far enough. SBS
The bottom line
The 2026 budget is the most significant structural intervention in Australian property taxation in decades. For new investors in established apartments, the economics have deteriorated materially. For the broader pool of high-income Australians allocating capital across asset classes, the tax-free primary residence has never looked more compelling relative to the alternatives.
But the premium Sydney house market operates on its own logic — one driven more by scarcity, aspiration, and owner-occupier conviction than by investor flows. The budget shifts the incentive structure in ways that favour owner-occupier assets, but it doesn't eliminate the rate headwinds, the affordability ceiling, or the legislative uncertainty that surrounds the changes themselves.
Nonetheless, the case for quality family homes in Bronte, Coogee, Rose Bay, Double Bay, and their equivalents on the Lower North Shore has quietly strengthened, overnight.
Mark Timmins is the founder of Marked Buyers Agency, a Sydney-based buyers agency specialising in the Eastern Suburbs and Lower North Shore. markedbuyersagency.com.au
