Auction Finance: What Is Auction Finance?
Buying Under The Hammer, Explained Simply
Buying a property at auction can be exciting, but it moves quickly. Once the hammer falls, you are usually committed, and the money needs to follow within weeks rather than months. That is where auction finance comes in. It is a type of short-term loan designed to help you complete on time, then repay once your longer-term plans are in place. In this guide we explain how it works, what it costs, and the questions worth asking before you raise your hand in the room.
Is This The Right Read For You?
This guide is written for UK buyers considering a property auction: first-time investors, landlords growing a portfolio, developers targeting refurbishment projects, and anyone who has spotted a bargain lot but realised a standard mortgage will not complete in time. If you are simply buying a home the traditional way, a regular mortgage is likely more suitable.
Defining Auction Finance
Auction finance is usually a form of bridging loan: short-term, secured borrowing arranged specifically to fund a property bought at auction. UK lenders describe it as a speed product. It exists because auction timescales are tight, and it is designed to be arranged in days or a few weeks rather than the months a mainstream mortgage can take.
The loan is secured against property, and it is temporary by design. Terms typically run for around 6 to 12 months, though some lenders offer anything from 1 to 18 months, and longer on larger development cases. Loan sizes advertised across the market are broad, with some providers quoting from around £26,000 up to £5 million, depending on the asset, the borrower and the deal.
Crucially, auction finance is not intended to be the loan you keep. It bridges the gap between buying the property and either selling it or refinancing onto longer-term funding.
Think of it as a bridge, not a destination.
How The Process Actually Works
Most UK auction houses require a deposit of around 10% on the day the hammer falls, with the remaining balance due within 14 to 28 days. Some online auctions allow a slightly longer completion window, but the deadline is legally binding either way. Miss it and you risk losing your deposit and facing further costs.
Sensible buyers arrange finance in principle before bidding, not after. A lender or broker will look at the property, the likely valuation, your available deposit and your repayment plan. Auction finance is commonly capped at around 75% loan-to-value, which means you generally need at least 25% of the purchase price from your own cash or equity, plus enough set aside for fees, interest and any refurbishment work.
Once you have won the lot, the lender instructs a valuation and solicitors work towards completion. Because everyone knows the deadline, the process is built for pace. Interest is often rolled up or retained, so you may not make monthly payments during the term - though it still adds to what you repay.
Why Buyers Choose It
The main reason is timing. High street mortgage lenders rarely complete within 28 days, so relying on one for an auction purchase is risky. Bridging lenders are set up to release funds quickly, which is why brokers so often point auction buyers in their direction.
The second reason is flexibility. Auction lots frequently need work, and some are effectively unmortgageable in their current state: no kitchen, structural issues, short leases, or unusual construction. Mainstream lenders tend to decline these outright. Bridging lenders assess the asset and the plan, so a property that needs refurbishment can still be funded.
Auction finance is also used far beyond ordinary houses. Lenders will consider residential property, buy-to-let, HMOs, semi-commercial and fully commercial units, land, and in some cases farmland or development sites. That breadth is why it is a staple tool for investors pursuing value-add projects, where the aim is to buy, improve, then refinance or sell at a higher value.
Weighing It Up
| Pros | Cons |
|---|---|
| Funds can often be arranged in days or a few weeks, fitting 14-28 day deadlines | Interest rates and fees are higher than standard mortgage lending |
| Accepts properties in poor condition or considered unmortgageable | Usually capped near 75% LTV, so you need meaningful cash or equity |
| Works across residential, commercial, semi-commercial, land and development | You must evidence a credible exit strategy before approval |
| Wide deal range, with some lenders quoting from around £26,000 to £5 million | Short terms of roughly 6-12 months leave little room for delays |
| Interest can often be rolled up, easing cash flow during refurbishment | Secured on property, so your asset is at risk if you cannot repay |
| Lets you compete with cash buyers in the room | Arrangement, valuation and legal fees add to the total cost |
Points Worth Pausing On
The single biggest issue is your exit strategy. UK lenders will want to see how the loan gets repaid, whether that is selling the property, refinancing onto a buy-to-let or commercial mortgage, or releasing equity elsewhere. They often want evidence the plan is realistic before funds are released. If your only plan is optimism, expect a decline.
Budget for the full picture, not just the purchase price. Auction fees, buyer's premiums, stamp duty, legal costs, valuation fees, lender arrangement fees, interest and refurbishment overspend all add up. Many buyers come unstuck because they funded the purchase but not the works.
Read the legal pack before bidding. It can reveal restrictive covenants, tenancies, missing title documents or service charge arrears that affect value and lendability. And be realistic about timing: refinancing usually takes longer than people expect, so build a buffer into your term rather than assuming a perfect handover.
Other Routes To Consider
- Cash purchase - the simplest option if funds allow, avoiding interest and arrangement fees entirely, though it ties up capital.
- Standard buy-to-let or residential mortgage - cheaper over time, but usually far too slow for a 28-day auction deadline unless the auction offers extended completion.
- Modern method of auction (conditional) sales - these often allow longer completion windows, which can make mainstream mortgage funding viable.
- Development finance - better suited to heavier projects involving structural work or new build, with funds released in staged drawdowns.
- Refurbishment bridging loans - similar to auction finance but structured around a planned works schedule and expected end value.
- Secured loan or further advance on an existing property - releases equity you already hold, sometimes at lower cost than a bridge.
- Joint venture or private investment - sharing the deal with a funding partner reduces your capital requirement, but also your profit and control.
Common Questions
How quickly can auction finance be arranged? Specialist lenders often talk in terms of days to a few weeks, and the product is built around 14 to 28 day completion deadlines. The exact timeline depends on the property, the valuation, your solicitor and how complete your paperwork is. Starting before you bid makes a real difference.
How much deposit do I need? Expect to need at least 25% of the purchase price, since auction finance is commonly capped around 75% loan-to-value. You will also need the 10% auction deposit available on the day, plus funds for fees and any works.
Can I use it on a property that needs major work? Often yes. This is one of the main reasons buyers use it, because bridging lenders are generally more flexible than high street mortgage providers on condition and mortgageability.
How long does the loan last? Typically 6 to 12 months, with some lenders offering 1 to 18 months or longer on larger development cases.
What counts as an exit strategy? Usually selling the property, refinancing onto a longer-term mortgage, or using equity from other assets. Lenders will want evidence it is achievable.
Is it more expensive than a mortgage? Generally yes. You are paying for speed and flexibility, so interest and fees are higher than standard property lending.
Where Kandoo Fits In
Kandoo is a UK finance broker, and our role is to help you understand your options clearly before you commit. We can talk through what auction finance involves, what lenders typically expect around deposits and exit plans, and whether a different route might suit your project better. There is no pressure and no jargon - just a straightforward conversation so you can bid, or walk away, with confidence.
Important Information
This article is general information only and is not financial, legal or tax advice. Auction finance is secured against property, so your property may be at risk if you do not keep up repayments or cannot repay at the end of the term. Rates, loan-to-value limits, terms and eligibility vary by lender and individual circumstances. Always read the auction legal pack and seek independent professional advice before bidding.
Buy now, pay monthly
Buy now, pay monthly