TL;DR: Buying at a property auction in the UK means you normally have just 28 days to complete. Over 28,000 properties sold under the hammer in 2024 alone, according to the Essential Information Group, generating £5.5 billion in total sales – yet the tight completion deadline catches many buyers unprepared.
Standard mortgages rarely move that fast, which is why most buyers use auction finance, a type of short-term bridging loan.
You’ll need a 10% deposit on the day, plus around 25% of the purchase price from your own funds. A clear exit strategy is essential. Speaking to a specialist broker before auction day is the smartest move you can make.
Property auctions attract all kinds of buyers.
Investors looking for below-market deals, developers hunting renovation projects, and even homebuyers wanting to sidestep the drawn-out chain process. The UK auction market grew by 10.6% in 2024, with more than 28,000 lots sold and over £5.5 billion raised, according to data from the Essential Information Group.
But the moment the hammer falls, the clock starts ticking.
You typically have 28 days to complete, and that’s not long enough for a standard mortgage to come through. So if you’re planning to bid, you need to sort your finances before you set foot in the auction room.
This guide explains what auction finance is, how it works, what it costs, and what you need to do to get it in place in time.
What Is Auction Finance and How Does It Work?
Auction finance is a type of short-term bridging loan used to buy property at auction. It’s designed to move quickly, unlike a standard residential mortgage which typically takes six to eight weeks to arrange – and often longer in complex cases.
Because auction buyers must complete within 28 days of the gavel falling, a conventional mortgage simply isn’t fast enough in most cases. Auction finance fills that gap. It gives you the funds to complete the purchase on time, while you sort out longer-term funding or prepare the property for sale.
The loan is usually secured against the property you’re buying.
Terms typically run from 3 to 24 months. You repay the loan in full at the end of the term, usually in one lump sum, along with any interest and fees that have accrued.
How It Differs from a Standard Mortgage
A standard mortgage lender will want to assess your income, your outgoings, your credit score, and whether the property meets their minimum condition requirements. That process takes time, often weeks.
Auction finance lenders focus mainly on the value of the property and how you plan to repay the loan.
This makes it far quicker to arrange, and it works for properties that a mainstream lender might decline outright.
Unconditional vs Conditional Auctions: What’s the Difference?
Not all property auctions work the same way, and the type of auction affects how urgently you need finance in place.
Unconditional auctions are the traditional format.
The hammer falls, contracts exchange immediately, and you pay a 10% deposit on the day. You then have 28 days to complete. Having your finance pre-arranged at an unconditional auction is not optional.
Conditional auctions (also called modern method of auction) work differently.
You pay a reservation fee on the day, which gives you an exclusive period, usually 28 to 56 days, to exchange and complete. This longer window makes it possible, in some cases, to use a standard mortgage. Even so, you still need certainty about your funding before you bid.
If you’re not sure which format applies to a specific lot, check the auction house’s legal pack before bidding. The terms will be set out clearly.
How Should I Prepare My Finances Before an Auction?
Getting your finances ready before auction day is not just sensible. It’s the only way to bid with real confidence.
Get an Agreement in Principle
Before you bid on anything, speak to a broker about getting an agreement in principle (AIP) for auction finance.
This is a lender’s written indication of how much they’re prepared to lend, based on an initial assessment of your circumstances. It doesn’t guarantee the loan, but it confirms that funding is likely available and gives you a clear bidding ceiling.
Trying to arrange finance after a successful bid adds unnecessary pressure. Some buyers have lost their 10% deposit because they couldn’t complete in time – this is one of the most common and costly mistakes made at property auctions.
Getting an AIP in place before the auction removes that risk.
Review the Legal Pack
Every property listed at auction comes with a legal pack.
This contains title documents, local authority searches, special conditions of sale, and any other legal information the buyer needs. Your solicitor should review this before you bid. They’ll flag anything that could affect your ability to get finance, such as title defects, restrictive covenants, or planning issues.
A solicitor experienced in auction purchases can turn this around quickly. Don’t skip this step to save time or money.
Get a Valuation
Auction properties don’t always come with a recent survey, and lenders will carry out their own valuation before releasing funds.
Getting your own independent survey done in advance is worthwhile, especially on properties that may need work. It gives you a realistic idea of the property’s condition and helps you set a sensible maximum bid.
How Does Auction Finance Work?
Once your bid is successful, the finance process needs to move fast. Here’s a typical timeline.
You pay the 10% deposit and any administration fees to the auction house on the day. You then provide your lender with the completion details.
The lender will carry out a valuation of the property (if not already done) and progress the legal work through your solicitor. If everything is in order, funds are released in time for completion, usually within 14 to 28 days.
What You’ll Need to Provide
Lenders will ask for details of the property, evidence of your identity and address, and a clear exit strategy.
Some will check your credit file; others focus almost entirely on the property and your repayment plan. You won’t need to prove income in the same way as with a standard mortgage, which is why auction finance works well for the self-employed, investors, and developers.
Loan to Value (LTV)
Most auction finance lenders will lend up to 75% of the property’s value as assessed by their own surveyor, not necessarily what you pay at auction. Some will go higher with additional security. Here’s a simple illustration using a property valued at £500,000:
| LTV | Loan Amount | Deposit Required |
|---|---|---|
| 65% | £325,000 | £175,000 |
| 70% | £350,000 | £150,000 |
| 75% | £375,000 | £125,000 |
If you own other property, you may be able to use the equity in it as additional security, which could allow you to borrow a higher percentage of the auction property’s value, up to 100%.
What Exit Strategy Do I Need for Auction Finance?
Every auction finance application requires a clear exit strategy. This is how you plan to repay the loan at the end of the term.
Lenders focus heavily on this because auction finance is secured against the property — if you can’t repay, the lender can sell it to recover their money. So you need to think it through carefully and have evidence to back it up before you apply.
Common exit strategies include:
- Remortgage to a buy-to-let mortgage: the most common route for investors keeping the property as a rental
- Remortgage to a residential mortgage: if you plan to live in the property once any work is complete
- Sale of the property: for investors refurbishing and selling for a profit
- Sale of another property: using proceeds from a separate transaction to clear the loan
Your lender will want to see that your chosen exit route is credible. If you’re planning to remortgage, a mortgage in principle for the long-term product can strengthen your application considerably.
Get access to expert brokers and specialist bridging lenders
What Does Auction Finance Cost?
Auction finance is more expensive than a standard mortgage, and it’s worth understanding the full picture before you commit.
Interest is charged monthly and can either be paid each month or rolled up, meaning it’s added to the loan and repaid at the end.
Rolling up interest is common because it avoids monthly payment pressure during the loan term. The trade-off is that the total interest cost is higher.
Beyond interest, you’ll pay an arrangement fee of around 2% of the loan amount, a valuation fee, legal fees (sometimes for both parties), and potentially a broker fee and an exit fee.
For a £500,000 purchase with a 75% LTV loan of £375,000, a rough estimate of total costs over a 12-month term – including interest, arrangement fee and legal fees – could easily reach £25,000 to £40,000 or more, depending on the lender and your circumstances.
Getting a full cost illustration from a broker before you bid helps you factor everything into your maximum bid price.
Is Auction Finance Regulated by the FCA?
Whether your loan is regulated by the Financial Conduct Authority (FCA) depends on how you intend to use the property.
If you’re buying a property to live in as your main residence, the bridging loan must be regulated by the FCA. This gives you additional consumer protections, and the maximum loan term for a regulated bridging loan is 12 months. Fewer lenders operate in this space, and the underwriting tends to be more thorough.
If you’re buying as an investment, whether to let or to sell, the loan is unregulated.
This gives lenders more flexibility, and it’s the more common route for auction purchases. Your broker can confirm which applies to your situation and point you towards appropriate lenders.
Who Is Eligible for Auction Finance?
Auction finance is available to a wide range of borrowers.
Unlike standard mortgages, lenders aren’t focused on employment status or income alone. The following can all be considered:
- Employed and self-employed individuals
- Company directors and contractors
- Property investors and landlords
- Limited companies and LLPs
- Foreign nationals and British expats
- Those with a less-than-perfect credit history
The lender’s main concern is the property value and the credibility of your exit plan.
A strong overall application will always get you better terms, but most people in a reasonable financial position with a solid security property will find a lender willing to work with them.
Why Should I Use a Specialist Broker for Auction Finance?
Auction finance lenders often don’t deal directly with borrowers.
Many work exclusively through brokers.
A specialist broker with experience in bridging and auction finance will know which lenders are most likely to approve your application, and which can move fast enough to meet your completion deadline.
A good broker can also help you structure your application to present the strongest possible case, make sure your exit strategy is watertight, and manage the process so you’re not scrambling at the last minute.
If you’d like to speak to a specialist, we can introduce you to an independent, FCA-authorised mortgage broker with experience across auction finance, bridging loans, and specialist property transactions. There’s no obligation, and the introduction is free.
Key Steps: Buying at Auction with Finance
- Speak to a specialist broker well before the auction date
- Get an agreement in principle so you know your maximum bid
- Review the legal pack with a solicitor experienced in auctions
- Get a survey or valuation on the property if possible
- Attend the auction with your deposit funds ready
- If successful, pay the 10% deposit on the day
- Submit your documentation to the lender promptly
- Work with your solicitor to complete within the required timeframe
- Implement your exit strategy before the loan term ends
Frequently Asked Questions
Auction finance is a short-term bridging loan used to buy property at auction. It’s designed to complete within 14 to 28 days, which a standard mortgage cannot achieve. Unlike mortgages, lenders focus on property value and your repayment plan rather than your income. You repay the loan in full at the end of the term, usually between 3 and 24 months.
Most auction finance can be arranged within 14 to 28 days, which aligns with the typical completion window after a successful bid. Some lenders can move faster if the paperwork is ready and the property is straightforward. Getting your agreement in principle sorted before auction day is the best way to avoid being under pressure after a winning bid.
You’ll need two separate amounts. On auction day, you pay a 10% deposit to the auctioneer to secure the property. To get the bridging loan, you’ll also need roughly 25% of the property value as your overall contribution, since most lenders cap lending at 75% LTV. These can overlap if you’re financing the full purchase, but you need the 10% in cleared funds on the day itself.
Yes, in many cases. Auction finance lenders place greater weight on the property value and your exit strategy than on your credit history. If you have a suitable property to use as security and a credible repayment plan, bad credit doesn’t automatically rule you out. It may affect the rate or LTV available to you, so speaking to a broker is the best way to understand your position.
An exit strategy is how you plan to repay the bridging loan at the end of the term. Lenders require this before approving your application because they need to know how they’ll get their money back. Common exit strategies include selling the property, remortgaging to a buy-to-let mortgage, or refinancing onto a residential mortgage. A vague or unrealistic exit plan is one of the most common reasons auction finance applications are declined, so it’s worth spending time on this before you speak to a lender.
Yes. This is one of the most common uses for auction finance. Many properties sold at auction need significant work and don’t meet standard mortgage lenders’ criteria. A bridging loan lets you buy and renovate the property, then either sell or refinance once the work is complete. Some lenders will also release funds in stages to cover refurbishment costs alongside the purchase.
