New Build vs Established Investment Property in 2026: What Changed

By Jason Given - 2026-08-31 - 8 min read

What the Budget changed

The May 2026 Federal Budget introduced the most significant changes to investment property taxation in decades. If you are weighing up a new build against an established property, the tax treatment is now fundamentally different depending on which path you choose. For the full breakdown, see our negative gearing reform 2026 guide.

For established properties purchased after Budget night (12 May 2026): negative gearing losses can only offset future rental income, not salary or other income. This is effective from 1 July 2027, subject to enabling legislation passing parliament.

For new builds: full negative gearing continues exactly as before. Losses offset all income including salary. There is no change at all.

The CGT discount is also changing. The 50% flat discount is being replaced with an inflation-based discount plus a 30% minimum tax floor on gains. This applies from 1 July 2027 and is subject to legislation.

Existing holdings are fully grandfathered. If you already own an investment property, nothing changes for as long as you hold it.

The case for new builds

✓Full negative gearing preserved. This is the single biggest advantage. Losses from your investment property continue to offset your salary and other income, reducing your tax bill from year one.
✓Higher depreciation deductions. A brand new building plus new fixtures delivers the maximum depreciation schedule - typically $10,000 to $20,000 or more per year in the early years. This significantly improves after-tax cash flow.
✓$15,000 FHOG available for owner-occupier buyers (not investors, but relevant if you plan to live in first then convert to investment).
✓Lower maintenance costs in early years. Everything is new - no surprise plumbing, roofing or electrical issues.
✓SMSF lending still available for commercial property. Residential SMSF LRBAs are banned, but commercial property lending through an SMSF remains fully available.
✓Adelaide growth corridors offer competitive pricing. Two Wells, Angle Vale and Mount Barker have house-and-land packages at price points that work for investors entering the market.
✓Government is incentivising new supply. The policy direction is clear - new housing construction is being encouraged through preserved tax benefits.

The case for established properties

✓Typically better locations. Inner and middle-ring suburbs versus outer growth corridors. Proximity to employment, transport and amenities.
✓Proven rental demand. Established tenant markets with demonstrated rental history - less guesswork on achievable rent.
✓Higher land-to-improvement ratio. Land appreciates, buildings depreciate. Established properties typically sit on higher-value land relative to the building, which is structurally better for long-term capital growth.
✓No construction risk. No delays, no builder insolvency risk, no sunset clauses. What you see is what you get.
✓Rental yields can be higher in established areas with strong tenant demand and limited stock.
✓Losses can still offset other rental income. Even without negative gearing against salary, investors with multiple properties can offset losses from one against rental income from another.
✓UWA research shows the new rules "accidentally favour some investors" - those with multiple properties can cross-subsidise losses across their portfolio, which partially mitigates the quarantining effect.

Running the numbers

Here is a side-by-side comparison of the after-tax position for each path. These are illustrative examples based on typical Adelaide pricing - your actual numbers will depend on your income, tax rate and specific property.

New build example

$650,000 house-and-land, Two Wells

Rental income: ~$500/week ($26,000/year)
Interest on $585,000 loan (90% LVR) at 6.5%: ~$38,000/year
Net loss including costs: ~$20,000/year
Full negative gearing at 37% marginal rate: tax saving ~$7,400/year
Depreciation deductions ~$12,000/year: additional tax saving ~$4,400/year
Total annual tax benefit: ~$11,800

Established example

$700,000 house, Morphett Vale

Rental income: ~$530/week ($27,500/year)
Interest on $630,000 loan (90% LVR) at 6.5%: ~$41,000/year
Net loss including costs: ~$22,000/year
Post-reform: loss quarantined against future rental income only - no immediate tax offset against salary
Depreciation limited (older building): ~$3,000-$5,000/year
The loss still reduces future tax when the property becomes positively geared, but no year-one cash flow benefit

What Lendology sees in practice: Most of our investor clients are now asking the new build vs established question. The answer depends on your tax position, your investment timeframe, and whether you value location or cash flow more. For high-income investors (37%+ marginal rate) who are negatively geared, new builds have become significantly more attractive on a pure tax basis. For investors focused on long-term capital growth in premium locations, established property still has structural advantages - you just need to be prepared for a different cash flow profile in the early years.

Not sure which path suits your situation?

Book a chat with Lendology. We model both scenarios with your actual numbers - income, tax rate, borrowing capacity.

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Loan structure considerations

New builds: The loan starts as a construction loan and converts to a standard investment loan at completion. Interest-only repayments from day one maximise the amount of deductible interest. During the construction phase, you only pay interest on the amount drawn down, which keeps holding costs manageable before the property is tenanted.

Established properties: A standard investment loan applies. Interest-only is still available and still recommended for tax efficiency - even with the quarantining changes, you want to maximise deductible interest and minimise non-deductible principal repayments on your investment debt.

Both paths: Keep investment lending completely separate from personal borrowing. Do not cross-collateralise. Do not use a redraw facility on your investment loan for personal expenses. Mixing purposes compromises deductibility and creates a mess at tax time. For the full guide, see our investment loan structure post.

Frequently asked questions

Is negative gearing completely gone for established property?

No. Losses can still be claimed - they are just quarantined against rental income rather than offset against your salary or other income. If you have multiple investment properties, losses from one can offset rental income from another. And once the property becomes positively geared (usually after several years), the quarantined losses reduce future tax. The change affects cash flow timing, not the total amount ultimately deducted.

Do the changes apply to property I already own?

No. Existing investment properties are fully grandfathered. If you owned the property before Budget night (12 May 2026), full negative gearing continues to apply for as long as you hold the property.

Are the negative gearing changes law yet?

The changes were announced in the May 2026 Budget and require enabling legislation to pass both houses of parliament. As at August 2026, the legislation has not yet been enacted. However, the Government has indicated the changes will apply from 1 July 2027 and has been designing the transition rules. Lendology will update this post when the legislative position is confirmed.

Which is better for capital growth - new build or established?

Historically, established properties in inner and middle-ring suburbs have delivered stronger capital growth than new builds in outer growth corridors. This is because land appreciates and buildings depreciate - established properties typically sit on higher-value land with better location attributes. However, past performance does not guarantee future results, and some growth corridor suburbs have delivered strong returns during periods of rapid expansion. The tax changes do not alter the fundamental growth drivers.

Sources: May 2026 Federal Budget papers. UWA research (July 2026). ATO investment property deduction guidelines. Information current as at August 2026. Note: negative gearing and CGT reforms are subject to enabling legislation passing parliament.