A cooling-off period is a legal feature of the transaction, not a general promise that you can change your mind without cost. The safest time to understand it is before you sign or exchange, with your solicitor or licensed conveyancer.
Check which transaction you are making
| Situation described in NSW guidance | What to check with your legal representative |
|---|---|
| Ordinary residential purchase | Usual five-business-day period and the actual deadline |
| Off-the-plan residential purchase | Longer ten-business-day period and applicable contract rules |
| Purchase at auction | No cooling-off period |
| Exchange on auction day after the property is passed in | No cooling-off period |
| Section 66W certificate or agreed change | What protection is waived or varied and the consequences |
Do not count the deadline casually
The NSW Government contracts guide says the usual period starts at exchange and ends at 5pm on the fifth business day after the exchange day. Public holidays and transaction-specific facts can matter. Obtain the actual deadline in writing from your legal representative rather than relying on this article or a calendar calculation.
For an ordinary five-day period, the government example has a Tuesday exchange ending on the following Tuesday, assuming those are the relevant business days. That illustration should not be copied as the deadline for a different transaction.
Understand the cost of using the usual right
The official guidance states that withdrawal during the five-business-day cooling-off period costs 0.25% of the purchase price. On an illustrative $1,000,000 purchase that is $2,500. This is arithmetic explaining the published rule, not a calculation of every amount that could arise under your contract or another termination right.
Giving notice correctly matters. Ask your solicitor or conveyancer who must receive it, in what form and by when. Do not assume a message to the selling agent has completed the legal steps.
A section 66W certificate changes the position
NSW guidance explains that a buyer can waive cooling-off rights with a section 66W certificate and that parties can agree in writing to vary the period. Ask your legal representative what the proposed document does in your circumstances before authorising it. A salesperson’s request for a quick decision does not answer your finance, inspection or contract questions.
Prepare a pre-exchange checklist
- Ask which cooling-off rules apply to this sale method and contract.
- Confirm whether any waiver or variation has been proposed.
- List unresolved finance, inspection, strata and contract issues.
- Ask for the precise deadline and process if you need to exercise a right.
- Understand the financial consequences before you exchange.
A buyers agent may help coordinate the purchase process, but your solicitor or licensed conveyancer should advise on the contract and notices. If buying at auction, prepare these checks before bidding rather than planning to rely on a cooling-off period afterwards.