Auction Finance: How to Fund a Property Bought at Auction

Auction finance is short-term borrowing, usually a bridging loan, used to complete a property bought at auction. At a traditional auction you exchange contracts when the hammer falls and usually have 28 days to complete. A normal mortgage rarely moves that fast, so bridging fills the gap until you refinance or sell.

Auctions can be a great way to buy. They can also go badly wrong if the money is not ready. Miss the deadline and you can lose your deposit and face further costs. The answer is simple: sort the finance before you bid, not after.

This guide covers how auctions work, why bridging fits, what to check before bidding and how to plan the exit. For the full picture on bridging, see our bridging loan guide.

Can you get a mortgage to buy at auction?

Rarely in time for a traditional auction. You usually have 28 days to complete, and most mortgages take longer. That is why most auction buyers use bridging, arranged in principle before the auction, and then refinance onto a mortgage once they own the property. Modern method auctions give longer, often 56 days, so a mortgage is sometimes possible.

What is the difference between traditional and modern auctions?

	Traditional auction	Modern method of auction
Commitment	Exchange when the hammer falls	Reservation, then exchange shortly after
Completion	Usually 28 days	Usually 56 days
Deposit or fee	Usually 10% of the price on the day	Non-refundable reservation fee, often several thousand pounds
Mortgage possible?	Rarely in time	Sometimes, but bridging is still common

Which situations do lenders see most?

These are illustrative situations, not Option Finance client outcomes.

Why does bridging fit auctions?

A bridging lender can usually complete within the deadline because it focuses on the property and your exit rather than months of underwriting. Many buyers then refinance onto a mortgage or buy-to-let mortgage, or sell.

What should you do before you bid?

1. Arrange bridging in principle so the lender and valuer are ready to move.
2. Get your solicitor to read the legal pack: title, searches, special conditions and any extra fees the buyer pays.
3. Inspect the property, ideally with a surveyor. Many auction lots need work.
4. Set a maximum bid that includes buyer’s fees, Stamp Duty, bridging costs, legal fees and works.
5. Plan your exit: refinance or sale, and whether the property will be mortgageable after the works.

You can check who owns the property and what is registered against it through HM Land Registry.

Why are some auction lots cheap?

Short leases, structural problems, no kitchen or bathroom, title issues, sitting tenants or planning problems. Some of these make a property unmortgageable until fixed. Bridging can fund the purchase, but your exit depends on fixing the problem. See our refurbishment finance guide.

What Stamp Duty will you pay?

The same as any other purchase. A second home or investment property is usually charged the higher rates for additional homes. See GOV.UK’s guidance on buying an additional residential property. Commercial lots use non-residential rates.

Frequently asked questions

Speak to Option Finance before the auction

Send us the lot details and your budget. We will tell you straight whether it can be financed, line up bridging in principle and plan the refinance.

Book a free initial consultation using the enquiry form below. See also our bridging finance advice and buy-to-let mortgage guide.