According to
Your Investment Property, recent tax changes have materially altered the returns equation between new build and established investment properties, with model assumptions now showing different outcomes on costs, cash flow and long-term growth depending on which path an investor chooses. The publication's post-budget modelling suggests The source cautions that while tax changes make new builds more attractive on paper, investors should not assume tax treatment alone makes a good investment, and should weigh land share, growth prospects and fundamentals alongside tax effects.n tax efficiency needs re-testing against current settings. For investors weighing their next purchase, the calculation is no longer as simple as it was a few years ago.
What the Post-Budget Modelling Shows
The Your Investment Property analysis runs new builds and established homes through a common framework of acquisition costs, depreciation claims, holding costs and expected capital growth, then compares net investor returns under current tax settings. The post-budget change in the modelling relates broadly to tax treatment, with established investment properties generally positioned less favourably than new builds under current settings. Depreciation is one of several additional factors (along with maintenance, entry costs and land share) feeding into the modelled comparison.g the two asset types, since established homes built before the relevant cut-off dates lose access to capital works deductions that new builds retain in full. This single variable changes the annual cash position for an investor enough to shift which property type delivers the stronger after-tax return over a typical holding period.
This matters because depreciation has become one of the few deduction levers investors can still influence through their choice of asset, at a time when interest costs, insurance and land tax are all climbing regardless of what is bought. A new build can generate thousands of dollars in paper deductions in its early years purely from capital works and plant and equipment schedules, lowering taxable income without any cash outlay. An established home, particularly one built before 1987, may offer little to no capital works deduction at all, meaning the investor's after-tax position depends far more heavily on rental yield and purchase price than on the tax system.
Why the Calculation Has Changed
Tax policy settings sit underneath every comparison in the Your Investment Property modelling, and the publication frames its analysis explicitly as a "post-budget" exercise — language that signals the comparison would have produced different results under prior settings. Depreciation rules, land tax thresholds and the general direction of property tax policy all feed into which asset class comes out ahead, and those settings are not static. Investors who built their portfolio strategy around assumptions from several years ago risk running numbers that no longer reflect the current environment.
This dynamic has broader implications beyond the individual purchase decision. As more investors run this comparison and shift toward new builds for the stronger depreciation profile, demand concentrates in growth corridors where new stock is being delivered, while established markets closer to employment centres can see investor demand soften. That shift in buyer behaviour has flow-on effects for vacancy rates, rent growth and ultimately for the broader financing environment that investors rely on.
Investors should also factor in that land tax liability differs materially depending on whether the investment sits in a growth corridor with a high land value component, or an inner-city apartment where the land component is diluted across many owners. A new house-and-land package in an outer suburb may attract a smaller depreciation benefit relative to its land tax exposure than an established apartment in the same price bracket, which is exactly the kind of trade-off the post-budget modelling is designed to surface.
Where SMSF Investors Fit Into the Comparison
Self-managed super fund trustees weighing a property purchase face the same new-build-versus-established question, but with an added layer of complexity around borrowing structures and compliance. Under current rules, an SMSF purchasing property must typically use a limited recourse borrowing arrangement, and the fund's trustees carry the same depreciation and land tax considerations as any other investor — but with the added constraint that the asset must satisfy the sole purpose test and cannot be used by a related party. For a full explanation of how these rules work in practice, see SMSF Property Investment Explained.
The depreciation gap between new and established stock is arguably more significant for SMSF trustees than for individual investors, because superannuation earnings are taxed at a flat concessional rate rather than at marginal income tax rates. A larger depreciation deduction inside an SMSF reduces the fund's taxable rental income at the 15 per cent concessional rate, which is a smaller dollar saving per dollar of deduction than for a high-income individual investor on a 37 or 45 per cent marginal rate. This means the new-build depreciation advantage, while still real, delivers a proportionally smaller tax benefit inside super than it does outside it.
SMSF trustees considering either asset type should run the comparison against their fund's existing asset allocation and liquidity position before committing, given the illiquidity of direct property inside superannuation and the compliance obligations tied to borrowing arrangements. Trustees should also confirm with their fund's accountant how depreciation interacts with the fund's overall tax position, since the benefit is not automatically as valuable as it would be for a personally held investment property.
What This Means for Investors Right Now
For an investor actively deciding between a new build and an established home today, the practical starting point is to get a depreciation schedule estimate for both options before signing a contract, rather than relying on general assumptions about which asset type performs better. The difference in annual deductions between a brand-new house and a 1990s-built home in the same suburb can run into thousands of dollars, and that gap compounds over a typical holding period into a meaningful difference in after-tax cash flow.
Investors should also weigh the growth side of the ledger, not just the tax side. Established homes in supply-constrained, close-to-city locations have historically delivered stronger capital growth than new builds in outer growth corridors, even where the new build wins on annual tax deductions. A property that saves an investor money in depreciation but underperforms on growth by a wider margin may still deliver a weaker total return over the holding period, which is why the Your Investment Property modelling treats the two variables — tax efficiency and growth potential — as separate inputs rather than assuming one automatically outweighs the other.
For the full breakdown of how deductions, CGT and land tax interact across an investment property's life cycle, see our Australian Property Tax Guide. Investors weighing this decision should treat it as a portfolio-level question rather than a one-off purchase decision, factoring in their existing asset mix, income bracket and whether they are likely to hold the property through a full market cycle or sell within a shorter window.
This article was produced with AI assistance and reviewed for accuracy. Content is for informational purposes only and does not constitute financial or property investment advice.
