Cotality’s four-week October series delivered a clearer auction signal than the weekly headline alone. Sydney’s final clearance rate fell sharply even as more homes went under the hammer, and the combined-capital monthly average reached its lowest level this year.
For owners considering an auction, the message is not that auction has stopped working. It is that the method needs enough genuine competition, a guide supported by current evidence and a negotiation plan that does not depend on auction day alone.
Final results weakened as Sydney volume increased
Cotality recorded 623 Sydney auctions in the week ended 25 October. The final clearance rate was 41.7%, down 8.7 percentage points from the previous week, while volume rose 9.3%.
The year-on-year comparison was also weaker. Sydney held 34.9% fewer auctions than in the corresponding week of 2025, when 957 auctions returned a final clearance rate of 65.3%.
This combination matters. A lower clearance rate can sometimes reflect a larger or different listing mix, but here the city also remains well below last year’s spring volume. The result points to selective buyer behaviour, not simply an unusually heavy auction week.
October was the weakest month of 2026 across the capitals
Across the combined capitals, the average final clearance rate across Cotality’s four-week October series was 45.2%. That was the lowest monthly average this year, below June’s 45.7% and well below February’s 66.4% peak.
Monthly context helps separate a one-week fluctuation from a broader trend. The October average shows that softer conversion was not confined to one Saturday or one Sydney submarket.
More Sydney supply is scheduled, but still less than last year
Cotality expected 817 Sydney auctions for the week ending 1 November—31.1% more than the prior week’s 623, but 25.3% below the 1,094 held in the equivalent week of 2025.
For vendors, the immediate question is how many genuine buyers are competing for the property, not simply how many homes are scheduled across Sydney. Monitor contract requests, repeat inspections, finance readiness and written offers. If those signals remain thin, consider whether an evidence-based pre-auction agreement or a structured post-auction negotiation is more likely to protect the result.
Owner Takeaway
Sydney's final clearance rate fell to 41.7% across 623 auctions, and Cotality’s four-week October combined-capital average of 45.2% was the weakest this year. With 817 Sydney auctions scheduled for the week ending 1 November, sellers face more near-term competition even though volumes remain below last year. Use auction only where genuine bidder depth supports it, set the guide from current comparable evidence and agree in advance how strong pre-auction offers or a passed-in result will be handled.
