A new build gives you a builder’s warranty, no prior occupant, and the ability to design or customise the property to your needs, none of which an established home can offer. It also now carries a tax advantage established property does not.
The practical difference
With a new build, you know exactly what you are getting: new appliances, new systems, and a warranty behind the structure if something goes wrong early on. An established home hides that information. You cannot see the plumbing behind the walls, and older roofing, whether terracotta, clay or colorbond, deteriorates over time and can mean repair work you did not plan for. To be fair, an existing house can sometimes be cheaper, but that price depends heavily on how much effort you are prepared to put into managing an older, unknown dwelling.
The tax difference
Under the Treasury Laws Amendment (Tax Reform No. 1) Act 2026, negative gearing on residential property is being limited to new builds and to government housing priorities such as build to rent and social or affordable housing. For an established investment property purchased after 7:30pm AEST on 12 May 2026, losses can only be deducted against other residential property income, from the 2027 to 2028 income year onwards. Properties already held at the announcement are unaffected until sold. New builds also give you a longer term of depreciation to claim, which can help offset your income over time.
Capital gains tax is changing separately for everyone from 1 July 2027, so it is not a point of difference between new and established property.
This is general information only and not financial, tax or legal advice. Speak to a licensed adviser about your circumstances.
For the full comparison, including the honest case for buying established, read our article: New Build vs Established Home: Which Is the Smarter Investment?
Sources: Treasury Laws Amendment (Tax Reform No. 1) Act 2026 (Act No. 49 of 2026, Royal Assent 26 June 2026), Federal Register of Legislation; and Australian Taxation Office, “Tax reform: Boosting home ownership: Reforming negative gearing and capital gains tax”.