Off-the-plan looks like a clean way to secure tomorrow’s property at today’s price. You sign now, pay a deposit, wait for the building to be finished, and settle when the keys are ready. The marketing makes it sound straightforward.
It is not, and the risks are not the ones buyers expect. The real exposure sits inside the contract: long timelines, vendor-favourable variation rights, sunset clauses, and a deposit that can sit at risk for years. These are not theoretical problems. They are the ones that have produced the worst NSW property stories of the last decade.
Here is what the marketing brochure leaves out.
The sunset clause, and why NSW had to step in
A sunset clause sets the latest date by which the development must reach completion. If construction is not finished by that date, either party can rescind the contract and walk away.
In theory, the clause protects everyone. The buyer is not stuck waiting forever, the developer is not bound if something genuinely goes wrong.
In practice, sunset clauses were used the other way. During strong price growth periods, some developers deliberately delayed completion past the sunset date, rescinded their own contracts, and resold the same apartments to new buyers at significantly higher prices. The original buyers got their deposits back but lost the property and the capital gain they would have made.
NSW responded by changing the law. Today, a vendor of a residential off-the-plan property generally cannot rescind under a sunset clause without either the buyer’s consent or the approval of the Supreme Court. The court has to be satisfied that the rescission is just and equitable in the circumstances. That is a real protection, but it is not absolute. The risk has been reduced, not eliminated, and the rules around commercial off-the-plan contracts and amendments are different again.
What this means for a buyer is that the sunset date in the contract should be reviewed carefully. Is the date realistic for the project? What rights does the vendor reserve to extend it? What happens if the vendor seeks to rescind? These are the questions worth asking before exchange, not after.
The variation rights buried in the contract
Most off-the-plan contracts give the developer the right to make changes to the building, the layout, or the finishes during construction. Some variations are reasonable. A minor adjustment to a structural element, for example, is unavoidable in any build.
The problem is the scope. Some contracts allow variations that go a long way past minor. The size of your apartment can shrink. The window orientation can change. The car space you thought was allocated can be reassigned. The finishes shown in the display suite can be downgraded. The shared facilities advertised in the marketing can be reduced or removed.
Whether you have any right to object depends entirely on how the variation clause is drafted. Some clauses give the buyer a right to rescind if the variation is materially adverse. Some do not. Some require the buyer to act within a tight window or be deemed to have accepted the change. These are the parts of the contract that need close reading before you sign, because once you are in, the developer is the one with the pen.
Your deposit, frozen for years
A standard off-the-plan purchase requires a ten percent deposit at exchange, held in trust until completion. Completion can be eighteen months, two years, or longer.
Two things to think about.
First, the time value of that money is real. Ten percent of a property’s value, sitting in trust for two years, is capital you cannot use elsewhere. Some buyers cover the deposit with a bank guarantee or deposit bond rather than cash, which preserves the use of the money, although it carries its own cost and conditions.
Second, the deposit is your exposure if the deal goes wrong on your side. If your finance falls through at completion, the developer can usually keep the deposit and pursue you for any further loss. Locking in a long settlement period without a clear finance plan is one of the riskier things a buyer can do.
The valuation gap at completion
This is the risk people underestimate the most.
When you exchange today, the lender does not finalise your loan against the finished property. They assess it again when construction completes, against the bank’s own valuation at that point.
If the market has cooled by the time the building is finished, the bank’s valuation can come in below the purchase price you committed to two years earlier. The bank will only lend against its own valuation, not the contract price. The difference between the two falls on you to cover from your own funds.
This is how buyers who looked perfectly qualified at exchange find themselves unable to settle two years later. It is not because they did anything wrong. It is because the market shifted and the contract had no protection against that shift.
A buyer can manage this risk by being conservative about how much of their borrowing capacity is used at exchange, by getting clarity on what finance will look like at completion, and by understanding that off-the-plan loan approvals issued today do not bind any lender to the final number.
How to buy off-the-plan with eyes open
None of this means off-the-plan is a bad idea. For the right buyer with the right contract, it can work well. The point is that the standard contract is drafted to suit the developer, and a buyer who signs it without review is taking on every one of these risks by default.
A proper off-the-plan review looks at:
- The sunset date, the developer’s extension rights, and the rescission regime
- The variation clause, including what changes are permitted and what rights you have to object
- The disclosure statement and any updates the developer has issued
- The deposit terms, including any early release provisions
- The car space, storage, and inclusions, and whether they are actually guaranteed
- The strata by-laws that will apply, if available
- The duty position, including any off-the-plan deferral
- The finance pathway from exchange through to completion
Some of those items can be negotiated. Some cannot. Either way, you go in knowing exactly where the risk sits.
You can read more about how we review property contracts in our wider property law and conveyancing work, and the structural issues that make duty planning critical before signing in our property law services.
If you are looking at an off-the-plan purchase in NSW and you want the contract read by a lawyer who has seen how these deals actually play out, send it to our team for review before you exchange.



