Buying Property at Auction.

How to bid with confidence, finance fast, and avoid the pitfalls of auction purchases.

Buying your first home is one of the most significant financial decisions you will ever make. The process can feel daunting, but it follows a clear sequence of steps — and understanding each one in advance removes much of the anxiety. This guide walks you through the entire journey, from the very first savings conversation to the moment you collect your keys.

Auction Guide

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1

How property auctions work

UK property auctions operate under two main formats: traditional auctions and modern method of auction. In a traditional auction, the winning bidder exchanges contracts on the fall of the hammer and must complete within 28 days. This is legally binding — if you cannot complete, you forfeit your deposit (typically 10%) and may face further liability.

The modern method of auction (MMoA) is increasingly common online. Here, the winning bidder pays a reservation fee and has a longer period — typically 56 days — to exchange and complete. It offers more time but does not remove the need for pre-arranged finance.

2

Financing an auction purchase

The 28-day completion window makes a standard mortgage application impossible — high-street lenders typically take 4–8 weeks to issue a formal offer. Most auction purchasers therefore use bridging finance to complete, then refinance onto a standard mortgage once the property is in their ownership.

A bridging facility can be arranged in days. The key is to have terms agreed — and ideally a Decision in Principle — before you bid. Walking into an auction room without pre-arranged finance is one of the most common and costly mistakes buyers make.

3

What to do before bidding

Read the legal pack. Every lot at auction comes with a legal pack prepared by the seller's solicitor. This contains the title deeds, searches, special conditions of sale, and any tenancy agreements. Your solicitor should review this before you bid — issues flagged post-auction cannot be used to renegotiate or withdraw without penalty.

Arrange a survey. You cannot make a bid conditional on a satisfactory survey. If the property has structural issues, you discover them after exchange. A RICS survey before the auction — at your cost — is the only protection available.

Research comparable values. Use Land Registry data and recent sold prices in the area to establish your maximum bid. Factor in the cost of any works required, your finance costs, and your target profit or end value before setting your ceiling.

4

Stamp Duty and auction costs

SDLT is payable on auction purchases just as on any other property transaction. It must be paid within 14 days of completion. For investors purchasing additional properties, the 3% additional SDLT surcharge applies, which should be built into your numbers before you bid.

Other costs to budget include: auction house buyer’s premium (typically 1–3% plus VAT), bridging finance arrangement fees (0.5–2% of the loan), legal fees for both purchase and refinance, and any survey costs incurred pre-auction.

5

Common pitfalls and how to avoid them

Bidding without a pre-agreed finance facility is the most dangerous mistake. If you win and cannot complete, you lose your deposit and remain legally liable for any shortfall if the property sells for less at re-auction.

Ignoring the legal pack is equally risky. Properties sold at auction sometimes carry title defects, restrictive covenants, or sitting tenants that fundamentally affect their value or usability. There is no warranty against these — the pack is the entirety of the seller’s disclosure.

Letting emotion set the price. Auctions create competitive tension by design. Establish your maximum bid before you enter the room and do not exceed it. The deal must work at your number, not at the number needed to beat the person next to you.

What to remember from this guide.

Arrange bridging finance before the auction — not after winning
Read and have your solicitor review the legal pack before bidding
Commission a survey before the auction; you cannot make bids conditional
Build in all costs — buyer's premium, SDLT, finance, legal — before setting your maximum bid
Traditional auctions require completion within 28 days; this is legally binding on the fall of the hammer