From October 1, Victorian vendors must publish their auction reserve price a full seven days before sale day. The rule arrives as Melbourne clearance rates hover around 50% and capital city prices sit 4.3% below year-ago levels according to CoreLogic, timing that raises questions about how transparent reserves interact with weakening demand.
The policy intent is clear: stamp out underquoting by forcing vendors to commit to a floor price before the final campaign week. The execution risk is equally clear: sellers lose the chance to adjust their number based on late-stage buyer feedback, registration counts, and pre-auction offers that typically surface in the last five to seven days.
What the rule actually requires
Any property going to auction or fixed-date sale must have its reserve price published at least seven days out. That figure goes into all marketing materials and the new Property Price Statement. If the reserve isn’t published on time, the auction cannot proceed. Penalties for agents who breach the rule run north of $40,000, plus potential loss of commission.
Vendors can still adjust the reserve upward before auction day, the rule sets a floor, not a ceiling, but any downward revision requires republishing and restarting the seven-day clock. In practice, that makes lowering a reserve functionally impossible once the countdown begins.
The state is also mandating sold price disclosure within seven days of unconditional settlement, a move that closes the data gap on withheld results. That change has broad support; the reserve rule does not.
The information asymmetry vendors now carry
Auction campaigns are discovery mechanisms. Agents run open homes, track enquiry quality, gauge serious versus curious buyers, and feed that intelligence back to the vendor. The final week typically delivers the clearest signal: how many bidder registrations, whether pre-auction offers are landing above or below the indicative range, and what the two or three genuine buyers are prepared to pay.
Under the new rule, vendors set their reserve before that signal arrives. They’re pricing based on comparative sales data, agent opinion, and early-stage buyer sentiment, all useful inputs, but none a substitute for confirmed bidder intent.
In a rising market with strong buyer competition, that information gap matters less. Vendors can set a conservative reserve and bank on upward pressure from multiple bidders. In a market running 50% clearance rates and declining year-on-year prices, the risk profile inverts: set the reserve too high and the property passes in; set it too low and you’ve committed to a floor you can’t walk back from if buyer appetite proves weaker than the early-stage signal suggested.
Two scenarios where this bites
First: a vendor lists with an indicative range of $1.1 million to $1.2 million, sets a reserve at $1.15 million based on agent advice and three comparable sales from the prior quarter. By day five of the countdown, only two bidders have registered, both first-home buyers stretching serviceability at current rates. The property auctions, attracts modest competition, and sells for $1.08 million, a clearance, but $70,000 below what the vendor might have accepted as a pre-auction offer had they known buyer appetite was soft before locking in the reserve.
Second: the same property, same indicative range, but the vendor sets a $1.25 million reserve hoping for upside. Auction day arrives, bidding stalls at $1.12 million, and the property passes in. The vendor now enters post-auction negotiation from a weaker position, buyers know the property didn’t meet reserve, and the failed auction itself becomes a pricing signal that drags on subsequent offers.
Both outcomes were possible under the old rules, but the new structure removes the safety valve: the ability to read late-stage buyer behaviour and adjust the reserve accordingly in the 48 hours before auction.
The numbers that matter
- Melbourne median home prices down 4.3% year-on-year as of September 2024 (CoreLogic)
- Preliminary clearance rate 50.3% in the final week of September
- Agents face penalties exceeding $40,000 for non-compliance, plus potential commission loss
- Reserve prices must be published seven days before auction, no functional pathway to lower the figure once disclosed
Who adjusts and how
Vendors sitting in high-demand pockets with strong buyer depth can set reserves close to market and trust the auction dynamic to deliver upside. That’s the base case the policy assumes.
Vendors in softer segments, outer suburbs, older stock, properties needing work, or price points where serviceability is binding, face harder trade-offs. Set the reserve at genuine market clearing price and you risk passing in if even one expected bidder drops out. Set it below market and you’ve committed to selling at that floor regardless of how competition unfolds.
The likely adaptive behaviour: more vendors opt for private treaty to retain pricing flexibility, or they set deliberately low reserves (closer to a true walk-away number than a market-testing figure) and accept the risk of underselling in exchange for certainty of clearance.
If private treaty becomes the preferred path for risk-averse sellers, auction volumes decline, and with them, the public price discovery that auctions provide. That’s the unintended consequence the policy doesn’t account for: reducing transparency in the name of increasing it.
What could make this work better
A 48-hour disclosure window instead of seven days would preserve most of the anti-underquoting benefit while allowing vendors to incorporate late-stage buyer feedback. That’s not the rule we have.
Alternatively, allowing one reserve revision downward within the seven-day window, disclosed transparently, with the new figure published immediately, would give vendors a single adjustment opportunity without creating an endless game of shifting goalposts. Again, not the current design.
The sold price disclosure change, by contrast, works in the direction of better transparency with minimal execution risk. Buyers gain access to actual transaction data instead of relying on agent-curated comparables. Over time, that dataset should compress the information advantage agents hold and allow buyers to anchor their own valuations more confidently.
The three-month test
October through December will reveal how vendors and agents adapt. Watch for:
- Auction volumes as a share of total listings, if vendors shift to private treaty to avoid the reserve lock-in, auction market share declines
- Clearance rates relative to the prior quarter, if passed-in properties spike, the rule is forcing vendors into reserves the market won’t meet
- The spread between indicative ranges and disclosed reserves, if reserves sit well below the advertised range, vendors are using the disclosure as a floor rather than a market-testing figure
If clearance rates deteriorate and auction volumes decline, the policy will face pressure to adjust. If vendors adapt by setting genuinely market-clearing reserves and clearance rates stabilise, the rule beds in.
Practical take for anyone planning to sell
If you’re selling by auction in Victoria from October 1 onward, pressure-test your reserve against worst-case buyer turnout, not the optimistic scenario. Ask your agent: what do we sell for if only two bidders show and one drops out at 80% of our target? That’s your true reserve. Anything higher is a gamble that the final week delivers better news than the early signal suggested.
If you need pricing flexibility and can’t afford a passed-in result, private treaty may now be the lower-risk path, but you trade the transparency and competition dynamic of an auction for it.
For related analysis on how current borrowing conditions are shaping buyer capacity across states, see our recent breakdown on serviceability cuts and their regional impact. If you want the clearest signal on policy shifts and what they mean for your next decision, subscribe to the newsletter.
General info, not financial advice.
