Private treaty vs auction: what's the difference for buyers?

Walk through any suburb on a Saturday morning and you'll see both. A crowd outside a house on a quiet street, an auctioneer calling bids. And down the road, a "for sale" sign with a price range and an open for inspection time. These are the two main ways property is sold in Victoria, and as a buyer, they require completely different approaches.

This is one stage in our complete guide to the Victorian buying process.

Private treaty: the basics

Private treaty means the property is listed at an asking price, or a price range, and buyers negotiate with the vendor through the agent. There's no single deadline. No crowd. No hammer.

When you're interested in a private treaty property, you make an offer to the agent, either verbally (to test the water) or in writing. The agent takes it to the vendor. They can accept it, reject it, or come back with a counter-offer. This can go back and forth a few times before you reach an agreement.

Once both parties agree on price and terms, contracts are exchanged. From that moment, the cooling-off period begins.

Key features of private treaty:

• Cooling-off period applies. In Victoria, you have three business days after signing the contract to pull out of the deal, with a small penalty (0.2% of the purchase price, or $100, whichever is greater). This is a meaningful safety net.
• Conditions can be included. You can make your offer subject to finance, subject to a satisfactory building inspection, or subject to other conditions. If the condition isn't met, you can exit without penalty.
• More time and flexibility. There's no auction day deadline forcing a decision. You can take a few days to get inspection reports and finalise your finance.
• Price can be opaque. The asking price is set by the vendor's agent, often as a range, and may or may not reflect what the vendor actually expects. There's more room for negotiation, but also more room for confusion.

Auction: the basics

In an auction sale, the property is marketed for three to four weeks (usually) and then sold publicly to the highest bidder at a specific time and place. The auctioneer runs the process. Whoever bids highest above the reserve wins.

Key features of auction:

• No cooling-off period. If your bid is accepted at auction, the contract is unconditional from the moment the hammer falls. You're legally committed immediately.
• No conditions. Auction contracts don't have subject-to-finance or subject-to-inspection clauses. You bid knowing you're buying as-is.
• Transparent price discovery. You can see exactly what other bidders are willing to pay. The final price reflects the open market on that day.
• Faster commitment. Settlement is arranged quickly after auction day. There's no negotiation period.

The implications for preparation

Because auction contracts are unconditional, everything you'd normally do after signing a conditional contract needs to happen before auction day.

That means:

• Getting your building and pest inspection done during the campaign, not after
• Having your conveyancer review the Section 32 and contract of sale before auction day
• Having formal finance approval (not just pre-approval) in place
• Knowing what deposit you'll need on the day (typically 10%) and how you'll pay it

For a private treaty purchase, you can sign a contract conditionally and then organise inspections and finalise finance in the days or weeks after signing. That's a very different timeline.

Which is better for buyers?

Neither is strictly better. It depends on what you value.

Private treaty suits buyers who want flexibility, time to do due diligence, and the protection of conditions. First home buyers often find private treaty less stressful for their first purchase, because there are more opportunities to pause, ask questions, and check that everything is in order before becoming fully committed.

Auction suits buyers who are well-prepared, have done all their due diligence during the campaign, and want a clean, quick process. If you're competing for a property that has multiple interested buyers, an auction at least gives everyone a fair shot at the same time. Private treaty negotiations can feel messier when there are multiple offers in play.

Competitive private treaty: a middle ground

In a hot market, private treaty listings can behave almost like auctions. The agent may receive multiple written offers and run what's effectively a best-offers process, where each buyer submits their highest offer by a deadline without knowing what others have offered.

In that situation, buyers often feel pressure to reduce or remove conditions to make their offer more attractive. Offering fewer conditions is closer to the certainty an auction provides, which is what the vendor's agent is pushing for.

Even in a competitive private treaty process, you retain more control than at auction: you can still include conditions if you're willing to risk losing the deal, you still have a cooling-off period after signing, and you're not locked in until contracts are actually exchanged.

Reading the market signals

The method of sale often signals something about the vendor's expectations and the property's competition level.

Auction is commonly used for properties where the vendor expects strong competition and wants to extract the maximum price in a transparent process. It's also used for properties that are unique or hard to price, where open bidding is more efficient than trying to set a price range.

Private treaty is used for a wider range of properties. Some are genuinely open to negotiation. Others have a firm price the vendor won't budge from. The range on the listing gives you a starting point, but it doesn't tell you much until you make an offer and see how the agent responds.

Passed-in properties

An auction where the property doesn't meet its reserve is "passed in." The highest bidder at the auction usually gets the first right to negotiate with the vendor privately after the auction.

If you're interested in a property but not ready to bid at auction, it can be worth attending to see where it passes in. If negotiations after the auction don't succeed, the property typically goes back on the market under private treaty, and you may have another opportunity.

One rule for both

Whether you're buying at auction or by private treaty, have your conveyancer review the Section 32 and the contract of sale before you commit to anything. In an auction, that means during the campaign. In a private treaty, it can happen before you sign, but it must happen before your cooling-off period expires at the very latest.

Skipping that review is the most common way buyers find themselves surprised after signing. The Section 32 and contract contain the detail that matters, and the time to read them is before you're locked in.

Sources

• Consumer Affairs Victoria: Buying property by private sale: the regulator on private-sale offers, deposits, and the three-business-day cooling-off period.
• Sale of Land Act 1962 (Vic): the cooling-off provisions, and why they don't apply to auction purchases.

Sources verified 25 July 2026.