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Buying a house at auction: the pros and cons

7 mins read
Last updated February 26, 2025

Buying a property at auction can be a great way to bag a bargain, but it’s not for the faint-hearted. From the pros and cons to the auction process, find out everything you need to know.

Auctions can provide an alternative way for landlords, developers and home buyers to pick up a bargain property. It’s also fast - with less of the infuriating hanging around that we’ve come to associate with property buying.

However, there are risks involved when you buy a home under the hammer, and it’s undoubtedly a case of buyer beware.

Key takeaways
  • Buying a property at auction is a fast process but requires thorough preparation, including legal checks, surveys, and financing arrangements.

  • Auctions offer transparency, speed, and potential bargains, but risks include structural issues, financing challenges, and overbidding.

  • There are two auction methods: traditional (immediate contract exchange) and modern (reservation period before exchange).

  • A mortgage broker can help secure financing quickly, ensuring you’re ready to complete within the auction’s tight deadlines.
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Thinking of buying your home at auction?

If you are considering buying a home at auction it’s important to fully understand what the process involves. The auction buying process is fast, but you’ll need to do a lot of groundwork before you even contemplate placing a bid.

Here’s how to get started and what you need to know, to ensure you’re auction ready:

  • Search online for property auctions: You can also find properties that are being sold at auction on property websites such as Rightmove and Zoopla.

  • Get hold of the viewing catalogue: These are usually available in print and online around three weeks prior to the auction. Each property will be listed with a guide price. This is different from the reserve price, which is the minimum price the seller will actually accept (and normally confidential). Be aware that guide and reserve prices can change up to and on the day of an auction.

  • Register with the auction house: This usually involves completing a short online registration form that enables you to take part in the auction.

  • Arrange to view the properties: Book viewings through the auctioneer or agent. Take a builder or surveyor with you to get advice on the cost of necessary repairs to help you decide how much to bid.

  • Check the legal pack: This includes documents such as conditions of the sale and results of local authority searches. Study this carefully and send it to your solicitor.

  • Get an independent valuation: This is to check you won’t be paying over the odds.

  • Decide on your price limit: Finding out what similar properties in the same area have recently sold for can help you get a feel for a fair price.

How does the auction process work?

On auction day, make sure you:

  • Take the right paperwork: This includes photo ID and proof of residency (such as a passport, driving licence and utility bill), details of your solicitor and means of paying the deposit (cheque, debit card or banker’s draft).

  • Get a decent seat: Arrive early and find a spot with a good view of the auctioneer. Obviously, this doesn’t apply if the auction is held remotely.

  • Listen out for last-minute changes: Before bidding begins, the auctioneer will check everybody has a copy of the addendum sheet and will read out any alterations to the catalogue details.

  • Make sure your bids are clear: Once bidding begins, potential buyers will be asked to make their bids, either by raising their hand or paddle, so the auctioneer can easily identify them.
  • Don’t get caught up in the moment: Always stick to your budget and never bid more than you can afford.

If you can’t be at the auction in person, you can bid remotely:

  • By proxy: The auctioneer will place bids on your behalf up to your specified limit.

  • By telephone: The auctioneer will call you so you can bid live over the phone.

  • Online: You can also bid live from your phone, tablet or laptop.

If your bid is successful, you’ll usually have to pay:

  • 10% of the sale price on the day, as a deposit.

  • The remaining 90% around 28 days later – if you don’t pay this, you’ll lose the deposit and property.

  • An administration fee to the auction house – usually between £200 and £300.

  • Stamp duty land tax.

  • Survey costs.

  • Buildings insurance.

If you've found your ideal property and have done all the appropriate research, it’s possible to make an early bid before the auction. If you’re successful, you'll need to work extra fast and enlist the help of an experienced mortgage adviser and solicitor.

If a property doesn’t sell at the auction, the auctioneer will ask any interested buyers to make a private offer afterwards, so you can still make a bid then.

What are the two property auction methods in the UK?

There are two ways that exchange and completion can take place at a property auction – the ‘traditional method’ and the ‘modern method’.

  • With the modern method, you don’t have to exchange contracts straightaway. Instead, you pay a fee to reserve the property, which is non-refundable if you pull out. The cost of this varies, but it’s normally a percentage of your bid. You then have 56 days to exchange contracts and complete the purchase.
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Are some property auctions held online?

Allsop, the UK's largest property auction house, held its first online-only property auction in 2018, successfully selling six out of seven commercial lots. However, it's now not uncommon for residential auctions to take place online.

Interestingly, in an online-only auction, a late bid can result in the clock being extended by a minute, and a sale is only complete once there has been 60 seconds of silence.

With an online auction, you may be able to take advantage of automated or proxy bidding. This lets you set a maximum bid and the system places bets on your behalf.

It might not be quite as exciting as conventional bidding but a big plus is it stops you getting carried away and bidding more than you can afford.

What are the advantages of buying a house at auction?

Buying at auction is relatively straightforward. Other advantages include:

1. Speed: You can move quickly with the entire home-buying process being completed within a set number of days (often 28) after the auction.

2. Transparency: You’ll be able see the other bids for yourself and there’s no risk of gazumping.

3. Fairness: There’s no pressure to get your offer in first, as with other property buying methods.

4. The deal’s done: The process is not affected by lengthy delays from other parties or breakdowns in communication.

5. More choice: There’s also usually a wider range of properties and it’s possible to find some real gems, such as an undervalued home with planning permission or that renovation project you were looking for.

6. Reliability: Contracts are signed as soon as the auction is over.

What are the disadvantages of buying a house at auction?

Everything has to be done really quickly – from arranging a survey to asking your solicitor to check the legal pack.

Other things to watch out for include:

1. Do you have all the funding in place? If your bid is successful, you’ll need to be able to pay the 10% deposit there and then and the remainder shortly after.

2. Will you go over budget? Set yourself a limit as it’s easy to get carried away on the day

3. Will the price change? The guide price is often set low to generate interest and is not an estimate of the likely sale price. A rising guide price can mean there’s lots of interest from competing buyers and the property you’ve got your eye could sell for a great deal more than you expected.

4. Buyer beware. Defective properties with structural problems, short leases, defective covenants (such as no legal right of access) or restrictive covenants (such as how the property can be modified or extended) are often sold through auction.

5. You may not win the bid. If someone outbids you, you'll have lost time and the money you’ve spent on surveys and solicitors.

6. What’s done is done. Remember, once the hammer falls, there’s no going back.

Can a mortgage broker help me buy at auction?

The key to successfully buying a property at auction is speed and good organisation.

An experienced mortgage adviser will be able to work to very tight time frames to arrange an appropriate mortgage in principle, as well as talking you through the whole process.

This could make all the difference to your chances of getting that property gem at a great price.

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Rachel Lacey has 20 years of experience writing and editing personal finance news and guides. She is a freelancer for various financial and lifestyle publications and was previously editor of Moneywise magazine and How to Retire in Style. Rachel has also written for Times Money Mentor, The Mail on Sunday, NerdWallet UK, Interactive Investor and Confused.com.