What is a sunset clause in an off-the-plan contract?

Mechanic: when buying off-the-plan, settlement is conditional on the developer registering the strata plan, building code certification + occupation certificate by an agreed date, often 24-48 months from contract signing. The sunset date is the back-stop. If milestones are missed past the date, either buyer or developer can elect to terminate.

Why it matters: in market upswings, developers used to rescind via sunset clause then re-list the same units to new buyers at higher prices, leaving original buyers with refunded deposits + no property + no claim on the appreciation. NSW reformed via s66ZG-66ZS Conveyancing Act 1919 (post-2015): developer-initiated sunset rescission requires written purchaser consent OR Supreme Court approval. VIC followed via Sale of Land Act 1962 s10A. WA + QLD have similar carve-outs; SA + TAS less developed.

Buyer-side levers: negotiate the sunset date. Push for shorter sunsets (24 months not 48) to limit exposure. Add a 'liquidated damages' clause requiring the developer to pay your CPI + holding-costs differential if rescission is forced. Get the contract pre-reviewed by a property solicitor, sunset clauses appear plain-English but the registration milestone language hides the actual back-stop.

Buyer protection if developer rescinds in NSW/VIC: you can refuse consent + force the developer either to complete the development or apply to Supreme Court showing the rescission is just + equitable. Most developers settle out of court rather than face the publicity. Keep your contract + email exchange + financial records, they form the evidence trail.