How to Buy a House at Auction in the UK
Buying at auction is faster and more certain than a traditional purchase — but the risks are concentrated upfront, before you've even placed a bid. Here's how the process works and how to approach it without getting burned.
Property auctions have a reputation for being the domain of developers and cash-rich investors, but that's outdated. More buyers — including first-time buyers — are using auctions to find properties that aren't available through estate agents, to avoid the uncertainty of the traditional buying process, and occasionally to buy below market value.
The appeal is real. When the hammer falls, exchange is immediate and legally binding. There's no gazumping, no chain collapses at the last minute, no buyer getting cold feet after you've spent money on surveys and solicitors. What you see is what you get — and you get it within weeks, not months.
The risk is equally real. If you win a bid and later discover the property has a serious structural problem, an unresolvable title issue, or that you can't get a mortgage on it, you still have to complete — or lose your deposit and potentially face additional costs. The due diligence that normally happens after an offer in a traditional sale has to happen before the auction hammer falls.
Traditional Auction vs Modern Method Auction
There are two distinct auction formats in use in the UK, and understanding the difference matters before you start bidding.
The traditional auction is the faster, more binding, and higher-risk format. The modern method is designed to be more accessible — particularly for mortgage buyers — at the cost of some of the traditional auction's certainty.
Why Properties End Up at Auction
Understanding why a property is being sold at auction helps you assess the risk before you bid. Most auction properties fall into two broad categories.
Standard properties whose owners chose auction for convenience. Probate sales, divorce settlements, landlords exiting the market, and sellers who simply want a guaranteed, quick sale choose auction without there being anything wrong with the property. These can be perfectly good purchases.
Properties with issues that made them difficult to sell conventionally. Structural problems, title complications, short leases, properties requiring significant renovation, or homes in poor condition end up at auction precisely because buyers in a conventional sale would have walked away when the survey came back. These can still be good investments — but they require more careful due diligence and a clear plan for addressing whatever the issue is.
The honest starting point for any auction property is to assume there's a reason it's there. Sometimes that reason is benign. Sometimes it isn't. Your due diligence tells you which.
What to Do Before the Auction Day
Everything critical happens before the auction. If you haven't done your preparation, you have no business placing a bid.
Register with auction houses. Contact auction houses covering the areas you're interested in and ask to be added to their mailing lists. Most publish catalogues — online and in print — several weeks before each auction. Guide prices are listed but treat them as an indication only — they can change, and the reserve price (the minimum the seller will accept) is usually confidential.
View the property thoroughly. Visit the property at least once, ideally twice. Take a builder, surveyor, or architect on at least one visit to give you a professional view of the condition and an estimate of any renovation costs. Don't bid on a property you haven't inspected in person.
Commission a survey. This is the painful reality of auction buying — you may spend £400–£700 on a survey for a property you don't win. But buying at auction without a survey is one of the most expensive mistakes you can make. A serious structural defect discovered after the hammer falls is your problem, not the seller's. The RICS guidance is clear that a Level 2 survey is the minimum for a conventional property; older or complex properties need a Level 3. Our guide to what type of survey you need explains the options.
Instruct a solicitor to review the legal pack. Every auction property comes with a legal pack prepared by the seller's solicitor. This contains the title deeds, property information forms, any searches that have been carried out, leasehold information where applicable, and the special conditions of sale. You need your own solicitor to review this before you bid — not skim it, review it properly.
The legal pack is not the same as having your own solicitor raise enquiries in the normal way. It's what the seller's solicitor has chosen to include. Your solicitor should read it looking for what's missing as much as what's there — incomplete title, missing planning permissions, unusual covenants, or onerous lease terms can be just as significant as the documents that are present.
Arrange your finance. If you're buying with a mortgage, speak to your broker before the auction and get a mortgage in principle in place. Be clear that you're looking at an auction property — not all lenders will lend on all property types, particularly those requiring significant work or with title complications. For traditional auctions, many buyers use bridging finance to complete within the tight 28-day window, then refinance onto a standard mortgage afterwards.
Know your maximum bid. Before you walk into an auction room, set a maximum price and commit to it. The auction environment is designed to create competitive pressure. Emotion drives prices up. Your maximum bid should be based on what the property is worth — taking into account comparable sold prices and the cost of any work needed — not on how much you want to win.
Before the auction, Brix&Mortr gives you an independent price check based on real HM Land Registry sold prices for comparable properties — so your maximum bid is anchored to market evidence, not just the guide price or what the room is bidding.
What Happens on Auction Day
Arrive early. Any last-minute changes to properties — amended special conditions, addenda to the legal pack, or withdrawn lots — are announced before the auction starts or displayed in the room.
Register with the auctioneer before bidding. You'll need ID. Some auction houses issue bidding paddles; others simply require you to make your bids clearly visible.
When your lot comes up, bids are made openly — you can see exactly what others are offering. If the bidding reaches the reserve price, the property is on the market. The auctioneer will continue taking bids until no further offers are made.
If you're the winning bidder when the hammer falls, you sign the contract immediately and pay your deposit — 10% of the purchase price in a traditional auction. From that moment, exchange has occurred. You are legally committed. Withdrawal means losing your deposit and potentially facing further costs.
If you can't attend in person, most auction houses accept telephone bids (you bid via phone on the day with an auction house representative) or proxy bids (you authorise the auctioneer to bid up to a specified maximum on your behalf). Both require written authorisation in advance.
Costs to Budget For
Auction buying involves costs beyond the purchase price that are easy to underestimate.
Auction house buyer's premium. Many auction houses charge the buyer a fee — typically 1.5%–4% of the purchase price plus VAT — on top of the hammer price. This is stated in the terms and conditions and varies by auctioneer. Always check before bidding. On a £200,000 property with a 3% buyer's premium plus VAT, that's an additional £7,200.
Pre-auction legal and survey costs. If you lose the bid, you lose whatever you spent on the legal review and survey. This is an unavoidable cost of the process — budget for it as a sunk cost of due diligence.
Stamp duty. Payable in the normal way on auction purchases, within 14 days of completion.
Renovation or repair costs. Any work identified in the survey needs to be budgeted before you bid, not after. This is the cost that most frequently catches out new auction buyers.
The Discipline of the Maximum Bid
The single most important piece of advice for buying at auction: decide your maximum bid before you enter the room and do not exceed it under any circumstances.
Auction rooms are designed to create competitive pressure. Other bidders, the auctioneer's patter, the adrenaline of competing openly, and the fear of losing a property you've spent weeks researching all push bids higher than they should go. Buyers routinely overpay at auction precisely because the environment erodes the discipline they had in advance.
Frequently Asked Questions
Can I buy at auction with a mortgage?
Yes, though it's more straightforward through the modern method auction, which gives you 56 days to complete. Traditional auctions require completion within around 28 days, which is tight for mortgage buyers — many use bridging finance to meet the deadline, then refinance onto a mortgage after completion.
What is the legal pack and do I need to read it?
The legal pack is the set of documents prepared by the seller's solicitor — including title deeds, property information forms, search results, and special conditions of sale. You must have your own solicitor review it before bidding. Do not bid on a property without having the legal pack professionally reviewed.
What happens if I win a bid and can't complete?
You lose your deposit — typically 10% of the purchase price. Depending on the terms and conditions, you may also be liable for the seller's costs and potentially the difference if the property sells for less at a subsequent auction.
Do I have to attend the auction in person?
No — most auction houses accept telephone or proxy bids. Telephone bidding lets you bid via phone on the day; proxy bidding authorises the auctioneer to bid up to a specified maximum on your behalf. Both require advance written authorisation and a cheque or deposit to cover the maximum proxy bid amount.
Are auction guide prices reliable?
Guide prices are indicative only and can change before or on the day of the auction. The reserve price — the minimum the seller will accept — is normally confidential. Some properties sell significantly above the guide price; others don't reach their reserve and are withdrawn unsold.
Ready to find out what a property is really worth?
Honest, independent valuations based on real sold prices. In under 60 seconds.
Get Your Valuation — £4.99