Bridging Loans for Auction Purchases — How to Complete in 28 Days

Why You Need a Bridging Loan for Auction Purchases

When you buy a property at auction in the UK, you typically pay a 10% deposit on the day and must complete the purchase within 28 days. This is far too fast for a standard mortgage application, which usually takes 4 to 8 weeks.

A bridging loan solves this problem. Because bridging lenders are set up for speed, they can provide a Decision in Principle before the auction and complete the full legal process within the 28-day window — often much faster.

Auction bridging is one of the most common uses of bridging finance. Lenders understand the time pressure and have streamlined processes specifically for auction purchases. Some can complete in as little as 5 working days.

How to Arrange Bridging Finance Before the Auction

The smart approach is to arrange your bridging finance before you bid. Contact a broker, provide details of the property you're interested in (the auction catalogue will have the legal pack), and get a Decision in Principle (DIP) from one or more lenders.

A DIP gives you confidence that finance will be available and at what rate. It's not a guarantee — the lender will still need to complete their valuation and legal checks — but it means you can bid knowing that funding is in place in principle.

You should also instruct a solicitor before the auction. Your solicitor can review the legal pack (title documents, searches, special conditions) in advance, which saves days after the hammer falls. Many auction bridging lenders have panel solicitors who specialise in fast completions.

On auction day, if you win, your 10% deposit is paid immediately (usually by bank transfer or banker's draft). Your broker then submits the full application to the lender, who instructs a valuation and progresses the legal work. The remaining 90% is paid on completion day, funded by the bridging loan.

What Rates Can You Expect for Auction Bridging?

Auction bridging rates are broadly in line with standard bridging rates — there is no specific 'auction premium'. Expect rates from 0.49% to 0.85% per month depending on the LTV, property type, and your exit strategy.

The arrangement fee is typically 1% to 2% of the loan amount. Some lenders charge slightly higher fees for very fast completions (under 10 days), but this is not universal.

The total cost depends on how long you keep the bridge. If you plan to refurbish and sell the property within 6 months, your total interest cost will be half that of keeping the bridge for 12 months. This is why having a clear exit strategy is essential — it determines both whether you get approved and how much the bridge costs overall.

What Happens After Completion?

Once the bridging loan completes and you own the property, you need to execute your exit strategy within the agreed term. The three most common exits for auction purchases are:

Refinance: If the property is in good condition and mortgageable, you can refinance onto a standard mortgage or buy-to-let mortgage. The mortgage repays the bridge. This is the most common exit for auction properties bought as investments.

Refurbish and refinance: If the property needs work (common at auction), you refurbish it first, then refinance at the higher post-works value. This can also improve your LTV position — if you bought at £200,000, spent £30,000 on refurbishment, and the property is now worth £280,000, your refinance LTV is much lower.

Refurbish and sell: Buy at auction, refurbish, and sell at a profit. The sale proceeds repay the bridge. This is the classic 'flip' strategy used by property investors.

The key risk with auction bridging is that your exit may take longer than expected. Build in a buffer — if you think you'll need 6 months, take a 9 or 12-month bridge. The cost of the unused months is far less than the cost of extending or defaulting.

Tips for First-Time Auction Buyers

Always view the property before bidding. Auction catalogues can be misleading, and properties are sold 'as seen'. A physical inspection helps you estimate refurbishment costs and avoid nasty surprises.

Have your solicitor review the legal pack before the auction. Title issues, restrictive covenants, or planning problems can be deal-breakers that are much harder to resolve after you've committed to buying.

Set a firm maximum bid and stick to it. Auction fever is real — it's easy to overbid in the heat of the moment. Your maximum should be based on the property's value after works, minus refurbishment costs, minus bridging costs, minus your target profit.

Get your bridging DIP in place at least a week before the auction. This gives your broker time to find the best deal and your solicitor time to prepare. Rushing at the last minute limits your options and may cost you a higher rate.

Your property may be repossessed if you do not keep up repayments on a mortgage or any other debt secured on it.