Auction vs private treaty: what buyers need to know legally | Glenmore Legal
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Buying·5 min read

Auction vs private treaty: what buyers need to know legally

Auctions dominate the Sydney property scene, but the legal process, and your protections, differ significantly from a private treaty sale.

GL
Glenmore Legal
Published July 2026
A row of heritage sandstone and terrace buildings against a blue sky

Whether a Bondi terrace goes to auction or is listed for private sale changes more than the sale process, it changes your legal rights as a buyer, particularly around cooling-off and contract review timing.

Why is there no cooling-off at auction?

When the hammer falls, you're bound, there's no cooling-off period and generally no room to negotiate special conditions afterwards. This makes pre-auction contract review essential: by the time you're registered to bid, your solicitor should already have checked the contract, title, and any strata report.

How does private treaty give you room to negotiate?

A private treaty sale allows negotiation on price and terms before exchange, and includes the standard 5-day cooling-off period unless waived. In the Sydney property market, popular private treaty listings can still move within days, so contract review shouldn't be left until after you've made an offer.

What are pre-auction offers and 66W certificates?

Vendors sometimes accept a pre-auction offer if the buyer waives cooling-off via a section 66W certificate. That trades away your withdrawal right in exchange for certainty, so only sign one after the contract has been properly reviewed.

Frequently asked

Can I still get a building and pest report before an auction?

Yes, and you should, since there's no cooling-off period to fall back on if a defect turns up after the hammer falls.

Can a vendor accept an offer before auction?

Yes, often via a pre-auction offer, though many require a 66W certificate waiving cooling-off in exchange for early acceptance.

The bottom line

Whichever path you're on, the work is the same: know what's in the contract before you're legally committed. For auctions, that means getting the contract to us as early as possible, ideally the day it's listed.

Bidding at auction? Get the contract reviewed first.

Get a fixed-fee quote and speak directly to the person who'll handle your matter.

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This article is general information only and does not constitute legal advice. For advice on your specific circumstances, please get in touch.

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