Sunset Clause Disputes in Off-the-Plan Contracts
Published 22 August 2025
How sunset clauses work, why they occasionally become contentious, and the protections buyers have if a developer tries to rescind a contract.
A sunset clause is a standard feature of most off-the-plan contracts, setting a date by which a development must be completed and registered, after which either party may have the right to end the contract. Sunset clauses exist for good reason, since construction projects can genuinely run over time, but they have also been used in the past by developers to exit contracts and resell units at a higher price once the market has moved. Understanding how sunset clauses actually work, and what protections apply, is essential for anyone buying off the plan.
What a Sunset Clause Actually Says
In practice, a sunset clause requires the plan of subdivision to be registered, or an occupation certificate issued, by a specified date. If that date passes without the milestone being met, the clause allows the contract to be rescinded. The exact wording varies between contracts and developers, and some off-the-plan agreements include other termination triggers that function similarly to a sunset clause without technically being one, which is why reading the specific clause carefully with your conveyancer matters more than relying on a general understanding of how sunset clauses usually work.
Why Delays Happen
Construction delays are common in multi-unit developments and can stem from weather, labour and material shortages, planning amendments, contractor disputes, or simply an ambitious original completion date. A delay on its own is not evidence of anything improper, and most buyers who purchase off the plan should expect the possibility of some slippage in the completion timeline. The concern arises specifically when a vendor appears to use a sunset clause opportunistically, ending a contract not because completion is genuinely impossible but because reselling at a higher price has become more attractive than completing the original sale.
Buyer Protections in New South Wales
Reforms introduced in New South Wales significantly changed how sunset clauses can be exercised. As explained in the NSW Government's guidance on buying property off the plan, a developer generally cannot rely on a sunset clause to end a contract without either the buyer's written consent or an order from the Supreme Court permitting the rescission. Buyers, by contrast, do not need court approval to exercise their own rights under a sunset clause if the developer has failed to meet the deadline. This asymmetry exists specifically to prevent developers from using sunset dates as a convenient exit from a contract that has simply become less profitable than it once was.
Where a developer does need to apply to the Supreme Court for permission to rescind, the court weighs a range of factors before deciding whether termination is fair, including the specific wording of the contract, whether the developer has acted reasonably or in bad faith, the genuine reasons for the delay, the likely date of completion, and the effect that ending the contract would have on the purchaser. A significant increase in the property's value since the contract was signed is treated as a factor weighing against allowing rescission, since the legislation was specifically designed to stop developers walking away from contracts simply because a resale would now be more profitable.
How Other States Approach It
Not every state has introduced equivalent legislation, so the protections available can differ depending on where the property is located. In Victoria and Queensland, sunset clause disputes are more likely to be resolved through general contract law principles and the specific wording of the contract, rather than a dedicated statutory framework of the kind that applies in New South Wales. This makes a careful contract review before you sign particularly important for off-the-plan purchases outside New South Wales, since the clause itself, rather than legislation, will largely determine what happens if the sunset date passes.
What to Do If a Developer Tries to Rescind
If you receive notice that a developer intends to rescind your contract under a sunset clause, do not sign a consent form or agree to the termination before your conveyancer has reviewed the notice and the reasons given. Ask for clear evidence of why the sunset date could not be met and whether the delay was genuinely unavoidable. If the explanation does not hold up, or if the property has clearly increased in value since you signed, you may be able to challenge the rescission, particularly in states where court approval is required before a developer can act on the clause.
Protecting Yourself Before You Sign
The best time to manage sunset clause risk is before you exchange, not after construction has already started. Ask your conveyancer to clarify exactly what the sunset date is, whether the developer has any ability to extend it unilaterally, and what notice you are entitled to if a delay looks likely. Building in a realistic buffer between the expected completion date and the sunset date, where the contract allows it, reduces the chance that a genuine but modest delay tips over into a dispute about rescission.
Where a Conveyancer Fits In
A conveyancer experienced in off-the-plan purchases will read the sunset clause alongside the rest of the contract, flag anything unusually favourable to the developer, and advise you on how the relevant state's rules would apply if a delay eventuates. If you are partway through an off-the-plan purchase and have just received a sunset clause notice, get advice quickly, since the timeframes for responding are often tight and the difference between consenting and contesting a rescission can be significant.
Get a Fixed-Fee Quote
Tell us about your transaction and we will respond within two business hours with a clear, fixed-fee quote.
Get a Free QuoteMore Conveyancing Guides
Gazumping Explained and How to Avoid It
Why sellers can accept a better offer before contracts are exchanged, and how to respond.
Read MoreVendor Default Remedies Explained
The remedies available to a buyer when a seller fails to meet their contractual obligations.
Read MoreEasements of Light and Air Explained
What an easement of light or air actually protects, and how it can affect development.
Read More