Quick Answer

Buying at auction means purchasing unconditionally — there is no cooling-off period. You must have unconditional finance approval and have completed all due diligence before bidding. If you win, you are legally bound to complete immediately, paying a 10% deposit on the day. Never bid at auction without confirmed finance and independent legal advice.

Why auctions are common in Sydney

Auction is the dominant selling method in many Sydney markets. Vendors favour auctions for competitive bidding conditions and unconditional sale. For buyers, auctions require more preparation than private treaty and carry more risk.

Finance preparation — the most critical step

You must have unconditional finance approval before bidding — not just pre-approval. Unconditional approval requires the lender to have assessed the specific property (valuation complete) and verified all documentation. Arrange a property valuation at least 2–3 weeks before auction day. Winning without confirmed finance and being unable to complete risks losing your deposit and potential legal liability.

Due diligence before auction day

Because there is no cooling-off period at auction, complete all due diligence before you bid: have your solicitor review the contract; obtain a building and pest inspection from a licensed inspector; check council zoning and strata records (for units). Do not rely on vendor-supplied reports — obtain your own.

How auction day works

Bidding opens and the property sells if it reaches the vendor's reserve. If it doesn't reach reserve, it's 'passed in' — the highest bidder has first right to negotiate. If you win: sign the contract and pay the deposit (typically 10%) immediately. No cooling-off period. Settlement typically occurs 4–6 weeks later.

Preparation checklist

Set a firm maximum based on your confirmed borrowing capacity — not auction excitement. Have a personal or bank cheque ready for the 10% deposit. Understand comparable recent sales. Decide your strategy before arrival. Never bid beyond your confirmed finance approval.

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Frequently asked questions

You forfeit your 10% deposit and may be sued for further damages. This is a serious financial and legal risk. Never bid at auction without unconditional finance approval. Seek independent legal advice before attending any auction.
Reviewed by Chris Brown, ACL 384704 · 10 March 2026
Yes — and you should. Building inspections must be completed before auction day. Arrange access through the agent. Costs typically $400–$800. Do not rely on a vendor-supplied report — obtain your own independent inspection.
Reviewed by Chris Brown, ACL 384704 · 10 March 2026
If bidding doesn't reach the vendor's reserve price, the property is passed in. The highest bidder has first right to negotiate privately with the vendor, and a cooling-off period may then apply (confirm with your solicitor). The vendor has no obligation to sell at any price.
Reviewed by Chris Brown, ACL 384704 · 10 March 2026
About this article

Written and reviewed by Chris Brown, CEO & Founder of New Vision Financial Services. Authorised Credit Representative of Finsure Finance and Insurance Pty Ltd (ACL 384704). Published 10 March 2026. General information only — not financial, legal or taxation advice. Individual circumstances vary. Seek independent advice before making financial decisions.