Auction Finance for UK Limited Companies: A Guide
Auction finance is short-term bridging lending built around the 28-day completion deadline that comes with buying at a UK property auction. It lets a limited company, LLP or partnership exchange contracts on the fall of the hammer and complete on time, without waiting on a mainstream mortgage timeline that typically takes eight to twelve weeks.
Why auction purchases need bridging, not a mortgage
Auction contracts are unconditional the moment the hammer falls, with completion due in 28 days and a 10% deposit due immediately, so buyers need finance that can be arranged before the sale and drawn down fast. A standard commercial mortgage application, with valuation, underwriting and legal work running in sequence, rarely completes inside a month.
Bridging lenders build their process around speed: valuations are often desktop or drive-by for lower-value lots, legal work runs in parallel with underwriting rather than after it, and many lenders will issue an agreement in principle before the auction so the buyer knows their ceiling bid. The trade-off is cost: bridging rates run higher than a term mortgage, which is why most buyers plan an exit onto cheaper finance once the purchase completes.
Regulated vs unregulated bridging at auction
Whether an auction bridge is FCA-regulated depends on the property and the borrower, not the auction process itself. A loan secured on a property where the borrower or a family member will live is regulated; a loan to a limited company buying an investment or commercial property is unregulated, since the borrowing entity is not an individual consumer.
Most FundBiz enquiries fall on the unregulated side: a trading company, LLP or partnership of four or more buying a commercial unit, mixed-use block or investment property at auction. Unregulated bridging gives lenders more flexibility on structure and speed but carries less statutory borrower protection, so the loan terms, exit strategy and default charges need reading carefully before bidding.
First charge vs second charge auction bridges
A first charge bridge sits ahead of any other lender on the property title and is used for a straight cash purchase; a second charge bridge sits behind an existing mortgage and is used to raise capital against a property the company already owns, often to fund a separate auction bid. First charge terms are generally cheaper because the lender's security is uncontested.
Second charge bridging needs consent from the first charge lender before it can complete, which adds a step many buyers forget to plan for. Some auction buyers run both in sequence: a second charge bridge releases equity from an existing asset ahead of the sale, then a first charge bridge secures the new purchase once it completes.
How much a lender will advance
Loan-to-value on auction bridging commercial property typically sits between 60% and 75% of the lower of purchase price or valuation, lower than the 65-80% often quoted for residential bridges because commercial and semi-commercial assets are harder to value quickly and slower to resell if the exit fails.
Lenders also weight the property type: a vacant retail unit or a specialist building such as a former pub or care home will usually attract a lower maximum LTV than a tenanted office or light industrial unit, because the resale pool is narrower. Buyers bidding near the top of their finance ceiling should get lender terms confirmed in writing before the auction, not assume the headline LTV will apply to their specific lot.
Costs beyond the headline interest rate
Auction bridging costs are made up of the monthly interest rate, an arrangement fee usually between 1.5% and 2% of the loan, a valuation fee, legal fees for both sides, and an exit fee on some products, so the headline rate understates the total cost of a short-term facility. Many bridges retain interest for the loan term rather than charging it monthly, which increases the amount borrowed but avoids monthly servicing.
Because the loan is short-term, total cost is driven more by fees and speed of exit than by the monthly rate itself. A three-month bridge that exits on time at 1% a month costs meaningfully less in total than a nine-month bridge at 0.85% a month that runs to term, so the exit plan matters as much as the rate quoted.
Planning the exit before the auction
Lenders will ask for an exit strategy before releasing funds, and the two common routes are refinancing onto a commercial mortgage or repaying from the sale of another asset. Refinance exits need the property to be lettable or trading-ready within the bridge term, since a commercial mortgage lender will want income evidence or an owner-occupier trading history before it will refinance.
Buyers who cannot show a credible exit at application stage, or whose intended refinance lender has already declined a related deal, tend to be the ones who fall into an expensive term extension or a forced sale. Confirming an agreement in principle from the exit lender before bidding removes most of that risk.
| Feature | First charge bridge | Second charge bridge |
|---|---|---|
| Typical LTV (commercial) | 60-75% | Up to existing equity, often lower |
| Consent needed | No prior lender to consult | Yes, from the first charge lender |
| Typical use | Direct auction purchase | Raising a deposit or full price against an owned asset |
| Relative cost | Lower | Higher, reflects subordinate position |
| Speed to arrange | Fastest | Slower, depends on first lender's response time |
Step-by-step
- Get an agreement in principle from a bridging lender before the auction, based on the specific lot and its guide price
- Confirm whether the purchase is regulated or unregulated based on intended use of the property
- Check LTV and total cost, including arrangement fee, valuation and legal costs, against the maximum bid you plan to place
- Arrange solicitors in advance so legal work can start the moment contracts are exchanged
- Pay the 10% deposit and exchange contracts on the fall of the hammer
- Instruct the lender's valuation and complete underwriting within the 28-day window
- Complete the purchase and begin executing the pre-agreed exit, whether refinance or resale
Example
A trading company bid on a vacant light industrial unit at auction with a guide price of £310,000. It had a bridging agreement in principle in place for 65% LTV before bidding, won the lot at £295,000, exchanged with the 10% deposit that day, and completed in 24 days using a first charge bridge. It refinanced onto a commercial mortgage six months later once a tenant was in place.
Frequently asked questions
Can an LLP or partnership use auction finance, or is it limited companies only?
Auction bridging is available to limited companies, LLPs and partnerships, not just individuals. The lender will assess the entity's structure, directors or partners, and trading history, and unregulated bridging is generally the applicable route for a business buying investment or commercial property.
What happens if the sale falls through after exchange?
Once contracts are exchanged at auction the buyer is legally committed, and failing to complete within 28 days usually means losing the deposit and being liable for the seller's resale costs. This is why lender agreement in principle before bidding matters far more at auction than in a standard purchase.
Is auction finance more expensive than a normal commercial mortgage?
Yes, per month it is, because it is short-term and priced for speed and flexibility rather than long-term affordability. The comparison that matters is total cost against the alternative of missing the 28-day deadline, which usually costs the deposit and any resale shortfall the seller pursues.
Can auction finance be used for a property that needs refurbishment before it can be let or mortgaged?
Yes, this is one of the most common uses. A bridge can fund both the purchase and, on some products, an element of refurbishment cost, with the exit planned once the property is in a lettable or mortgageable state.
How quickly can funds actually be released after winning a lot?
With an agreement in principle and solicitors instructed in advance, many bridging lenders can complete within two to three weeks, comfortably inside the standard 28-day auction deadline. Complex titles, leasehold issues or slow local searches are the most common causes of delay.
By Adam Parker, Director, Best Business Loans Ltd. Last reviewed 2026-08-18.