Buying off the plan in Australia means committing to a home that exists only on paper. You sign a contract, hand over a deposit, and wait for a builder to turn a render into a real address. It can be one of the smartest moves a buyer makes, or one of the most expensive lessons, depending on what you sign and who you sign it with.
In 2026 the calculation has shifted. Victoria's stamp duty concession is still on the table, a federal negative gearing change is set to favour new builds from 2027, and developer insolvency remains very much a live concern. This guide walks through the risks, the rewards and the practical steps to protect yourself before you put pen to paper.
What does buying off the plan mean in Australia?
Buying off the plan means signing a contract to purchase a property before it is built, based on plans, floor layouts and a schedule of finishes rather than something you can walk through. You agree on a price today for a home that might not exist for another year or more. The NSW Government describes it plainly: you are buying based on the developer's plans and specifications, and settlement only happens once construction is finished.
Most of the time you will hand over a deposit of around 10% of the purchase price. That money is held in a trust account, not handed straight to the developer, and it stays there until the build is complete and settlement occurs. The balance is paid at settlement, which is also when your finance needs to be ready to go.
How the contract and the deposit work
The deposit is the part buyers fixate on, and rightly so. A roughly 10% deposit held in trust gives you a measure of protection: the developer cannot generally spend it on construction, and it sits as security for the contract. But the trust holding only covers the deposit itself. It does not protect you from a valuation gap at settlement or from the project never finishing.
The gap between signing and settlement is the defining feature of off-the-plan buying. Everything that makes it attractive (locking in a price, paying later) and everything that makes it risky (delays, valuation shortfalls, a developer going under) flows from that long wait.
Off the plan vs buying an established home
The difference is mostly about timing and certainty.
| Feature | Off the plan | Established home |
|---|---|---|
| What you inspect | Plans, renders, display suite | The actual property |
| Deposit | Around 10%, held in trust | Around 10%, held in trust |
| Time to settlement | Often a year or more | Usually a few weeks |
| Price certainty | Locked at contract date | Locked at contract date |
| Valuation risk | High (valued near completion) | Low (valued at purchase) |
| Condition | Brand new, builder warranty | Existing wear, established |
An established purchase gives you certainty: you see the property, the bank values it now, and you settle within weeks. Off the plan trades that certainty for a longer runway and, sometimes, a better price or a tax advantage.
The real risks of buying off the plan
A few of these risks can cost you your deposit or leave you scrambling for cash at settlement, so they deserve more attention than the glossy brochure tends to give them. Understanding them is the difference between a good buy and a bad one.
Developer insolvency
Construction has consistently been the Australian industry with the most company insolvencies, according to ASIC's insolvency statistics. That is not a scare tactic, it is the single most important risk to understand. If your developer or builder collapses before completion, your project can stall, and getting your deposit back can become a slow, contested process.
The deposit held in trust offers some protection, but recovering it from a failed project depends on the contract terms and where you sit in the queue of creditors. Due diligence on the developer's track record is not optional. It is the first thing a good conveyancer will check.
Valuation shortfall at settlement
This is the trap that catches careful buyers. When you settle, the bank orders a valuation of the finished property. If the bank values it below your contract price, your loan is calculated on the lower figure, and you have to cover the difference in cash. Mozo flags this as a core off-the-plan risk, and it bites hardest when the market softens between signing and settlement.
As a hypothetical example, say you contracted at $750,000 and the bank values it at $710,000 on completion. The lender will lend against $710,000, and that $40,000 gap is yours to find, on top of your deposit. Build a buffer into your plan for exactly this scenario.
Construction delays and finance approval lapsing
Pre-approvals do not last forever. A delay of even a few months can push settlement past the expiry of your finance approval, forcing you to reapply, often on tighter lending criteria or higher rates than when you started. Coleman Greig Lawyers lists construction delays and lapsing finance among the recurring problems off-the-plan buyers face.
Interest rates, your income, and lending policy can all move in the wait. The home you could comfortably finance at signing might be a stretch by settlement.
Sunset clauses
A sunset clause sets a deadline. If the project is not finished by that date, either party can exit the contract. Sounds fair. The problem emerged in rising markets, where some developers tried to use sunset clauses to cancel contracts and resell the same property at a higher price, as Coleman Greig Lawyers has documented.
Lawmakers responded. In NSW and Victoria a developer now generally needs the buyer's consent or a court or tribunal order to rescind under a sunset clause, rather than being able to walk away unilaterally. In some other states the safeguards are weaker, so the protection you get depends heavily on where you buy. Have a conveyancer or solicitor read the exact sunset wording in your contract before you sign.
Strata fees and defects
Two quieter risks round out the list. Body corporate or strata fees can come in higher than the developer estimated in the marketing material, which changes your ongoing costs once you move in. And new builds are not immune to defects, from waterproofing to cladding. If you are buying an apartment, it pays to understand the NSW strata law reforms and how defect and levy rules are tightening, because they affect what recourse you have after settlement.
The rewards: why buyers still choose off the plan
For all the warnings, plenty of buyers do well out of off the plan. The rewards are concrete, and in 2026 a couple of them are unusually attractive.
Locking in today's price with a small deposit
You agree on the price at the contract date and pay the bulk at settlement, which might be a year or two away. In that window you keep saving, and if the market rises you have effectively bought below the future value. Mozo lists this as one of the headline draws: secure the property now with a small deposit while you keep building your funds.
The flip side is the valuation risk above. Locking in a price works in your favour when values rise and against you when they fall.
A brand-new home with warranty and depreciation
A new build comes with builder warranty and the appeal of never having lived in a place that someone else wore out. For investors, there is a tax angle too: newer properties generally offer stronger depreciation deductions on the building and fixtures, which can improve after-tax returns. This is general information, not financial, legal or tax advice, so confirm the specifics with a licensed adviser or the ATO.
Stamp duty concessions
Stamp duty is one of the biggest upfront costs in any purchase, and off-the-plan buyers in some states can pay less of it. The rules vary enormously by state, so understand how stamp duty works where you are buying before you assume a concession applies to you.
Victoria has the clearest current example. Its off-the-plan duty concession calculates land transfer duty after deducting construction costs incurred on or after the contract date from the property's dutiable value. In plain terms, you are taxed on the land plus whatever construction was completed at the contract date, not the full finished value. Buy early in the build and the dutiable amount can be much lower.
The State Revenue Office Victoria's temporary concession applies to contracts entered into from 21 October 2024 to 20 October 2026. Rules and dates differ by state and can change, so confirm the current position directly with the State Revenue Office Victoria before relying on it.
Other states have different concessions, different eligibility and different dates, or none at all. Do not assume the Victorian rules apply where you live. Always check your own state or territory revenue office.
The 2027 new-build negative gearing advantage
Here is the change that has investors paying attention. Under the Budget 2026-27 reforms, from 1 July 2027 full negative gearing (deducting rental losses against other income such as wages) will be retained for new builds but limited for established homes. The federal Budget framing is straightforward: new and off-the-plan dwellings become more tax-attractive for investors than established stock.
These are announced reforms rather than settled law as of mid-2026, so treat the 1 July 2027 start as a measure to confirm, not a certainty. For the full picture of what is changing, see our breakdown of the 2027 negative gearing changes. It is also one of the forces behind the build-to-rent boom, as institutional money chases the same new-supply incentives.
How to protect yourself when buying off the plan
Most off-the-plan trouble is avoidable if you scrutinise the contract as hard as you scrutinise the apartment. The clauses are where buyers get caught, not the floor plan.
Get the contract reviewed by a solicitor or conveyancer. Off-the-plan contracts are long and lopsided in the developer's favour. A professional will flag the clauses that matter, including the ones below.
Check the sunset date carefully. Find the deadline, understand who can exit and on what terms, and make sure the protections in your state are reflected in the wording. In NSW and Victoria the safeguards are stronger, but the contract still needs to be read.
Build a valuation and finance buffer. Assume the bank might value the finished property below your contract price, and keep cash aside to bridge a potential shortfall. Speak to a mortgage broker early about how long a pre-approval lasts and what happens if settlement slips, so a delay does not leave your finance stranded.
Do due diligence on the developer. Look at completed projects, financial stability and reputation. Construction insolvency is the headline risk, and a developer's track record is your best signal of whether the project will actually finish.
Read the inclusions and the defects process. Know exactly what finishes are promised, what the strata budget assumes, and what your recourse is for defects after handover.
If this feels like a lot to assess on your own, it is. Engaging a buyer's agent through GoMatch gives you someone whose job is to scrutinise the developer, the contract and the comparable sales before you commit, which is exactly where off-the-plan buyers most often get caught out.
Frequently asked questions about buying off the plan
Is a sunset clause a risk for the buyer or the developer?
Both, but the balance has shifted. A sunset clause lets either party exit if the project is not finished by the set date. Historically the risk fell on buyers, because some developers used the clause to cancel and resell at a higher price in a rising market. In NSW and Victoria the law now leans towards buyers: a developer generally needs your consent or a court or tribunal order to rescind. Protections are weaker in some other states, so check your contract and your state's rules.
Do I pay stamp duty on the land or the finished property?
It depends on your state. As a default, stamp duty is calculated on the property's dutiable value. Victoria's off-the-plan duty concession is the notable exception: it deducts construction costs incurred on or after the contract date, so you are effectively taxed on the land plus the construction completed at the contract date rather than the full finished value. That concession is Victoria-specific and time-limited. Confirm the rules with your own state or territory revenue office.
What happens to my deposit if the developer goes insolvent?
Your deposit is held in a trust account, which gives it some protection because the developer generally cannot spend it on construction. But if the developer becomes insolvent, recovering the deposit can be slow and depends on the contract terms and the wind-up process. Since construction is consistently Australia's most insolvency-prone industry, this is the risk that most justifies thorough due diligence on the developer before you sign.
The bottom line
Off the plan is not inherently good or bad. It is a trade: you give up the certainty of an established home in exchange for a locked-in price, a brand-new build and, in 2026, some genuinely useful tax and duty advantages. Victoria's duty concession and the 2027 new-build negative gearing change tilt the maths towards new dwellings for the right buyer.
The risks are equally real, and they cluster around that long wait between signing and settlement. Developer insolvency, valuation shortfalls and lapsing finance are the three to plan for hardest. Get the contract reviewed, build a cash buffer, vet the developer, and lean on professionals who do this for a living. Do that, and off the plan stops being a gamble and starts being a strategy.
Sources
- NSW Government, "Buying property off the plan" (2026)
- State Revenue Office Victoria, "Understanding the off-the-plan duty concession" (2026)
- ASIC, insolvency statistics, construction industry (2025-2026)
- Coleman Greig Lawyers, "Plain English Guide to Buying Off the Plan" (2026)
- Mozo, "Buying off the plan: pros, cons and what to consider" (2026)
- Australian Government, Budget 2026-27, negative gearing reform (May 2026)
