Buying Property at Auction: A Complete Guide for UK Buyers

Property auctions offer a route to buying homes, flats, and commercial properties that are often unavailable through estate agents. They can represent genuine value — but only if you do your homework. This guide walks you through the entire process from finding lots to completing the purchase.

Why buy at auction?

Auction properties frequently sell below market value because sellers want a fast, certain sale. Common reasons properties end up at auction include repossession, probate sales, ex-local authority stock, and properties that need significant renovation. For buyers willing to take on work or move quickly, auctions can offer opportunities that do not exist on the open market.

Types of property auction

Traditional (unconditional) auction

This is the classic auction format. When the hammer falls, you have exchanged contracts. You pay a 10% deposit on the day and must complete the purchase within 28 days (sometimes shorter). There is no cooling-off period. If you fail to complete, you lose your deposit and may face legal action from the seller.

Modern (conditional) auction

Also called online or conditional auctions. When you win, you sign a reservation agreement and pay a reservation fee (typically £5,000–£10,000 or a percentage of the purchase price). You then have 28–56 days to exchange and complete, giving you time to arrange a mortgage and conduct further due diligence. This format is more forgiving but reservation fees are usually non-refundable.

How to find auction properties

Auction properties are listed by specialist auction houses and increasingly on mainstream property portals. Key sources include:

• Major auction houses — Allsop, Savills Auctions, SDL Property Auctions, Auction House (the largest network of regional auctioneers)
• Online platforms — EIG (Essential Information Group) lists lots from hundreds of auctioneers in one place
• Property portals — Rightmove and Zoopla both list auction properties, often flagged with an auction tag
• Local agents — some local estate agents run their own auctions, particularly for lower-value or unusual properties

Due diligence before bidding

This is the most important part of buying at auction. Because you are legally committed the moment the hammer falls (in a traditional auction), you must do all your research before bidding:

• Review the legal pack — every auction lot comes with a legal pack containing the title deeds, local authority searches, and special conditions of sale. Have your solicitor review it before the auction.
• Check the title — look for restrictions, covenants, rights of way, or other issues that could affect the property's use or value
• Run a property report — use a service like PropertyReportUK to check flood risk, EPC rating, price history, crime data, and other key metrics before committing
• View the property — attend in person if possible. Most auction houses arrange at least one open viewing day
• Get a survey — a RICS HomeBuyer or Building Survey before the auction can reveal structural issues. This costs money upfront with no guarantee of winning, but it protects you from expensive surprises

Setting your budget

The purchase price is just one part of the total cost. Make sure you account for everything before setting your maximum bid:

• Purchase price — your winning bid amount
• Auction fees — many auction houses charge a buyer's premium of 1–3% on top of the hammer price
• Stamp duty — use a stamp duty calculator to work out your liability, remembering the 5% surcharge if this is an additional property
• Refurbishment costs — get at least two builder quotes before the auction if the property needs work
• Solicitor and conveyancing fees — typically £1,000–£2,000
• Survey costs — £400–£1,500 depending on the type and property size

Bidding strategy

Auctions can be exciting and it is easy to get carried away. Follow these principles:

• Set a firm maximum — calculate the most you are willing to pay including all fees and stick to it. Write it down and do not go above it.
• Research guide prices — the guide price is not the expected sale price. Properties routinely sell for 10–30% above the guide.
• Watch previous auctions — attend an auction before you plan to bid so you understand the pace and atmosphere
• Bid with confidence — clear, decisive bids signal serious intent. Hesitation can invite competing bidders.
• Do not get caught up — if bidding passes your maximum, stop. There will always be another property.

What happens when the hammer falls

In a traditional auction, the fall of the hammer means you have legally exchanged contracts. You will be asked to:

• Provide proof of identity (passport or driving licence) and proof of funds
• Pay a 10% deposit (usually by bank transfer or banker's draft)
• Sign the contract, including any special conditions
• Complete the purchase within 28 days (or the period stated in the contract)

In a modern (conditional) auction, you sign a reservation agreement and pay the reservation fee. You then have an agreed period (usually 28–56 days) to exchange and complete.

Financing an auction purchase

How you finance your purchase depends on the auction type and your circumstances:

• Cash buyers — the simplest route. You can complete quickly and avoid financing costs. Cash buyers are common at auction.
• Bridging loans — short-term finance (typically 6–18 months) designed for auction purchases. Higher interest rates than mortgages but fast to arrange. You refinance onto a standard mortgage once works are complete.
• Auction finance — some specialist lenders offer products specifically designed for auction buyers with a decision in principle before the auction day
• Mortgage in principle — if buying through a modern auction, a standard mortgage may work as you have 28+ days to complete. Get a mortgage agreement in principle before bidding and confirm the lender is comfortable with auction purchases.