Bridging finance is fast, flexible and expensive. Used well, it unlocks deals a term mortgage could never move on quickly enough: an auction purchase, a property that is not yet mortgageable, a chain that is about to collapse. Used badly, it becomes a costly trap with a deadline attached. The distance between those two outcomes almost always comes down to one thing: the exit, meaning how, and how certainly, the loan gets repaid.
This guide sets out the pros, cons and downsides of a bridging loan honestly, including the parts that some lenders and introducers gloss over. We arrange [commercial bridging](/services/commercial-bridging) across the whole market, and we turn deals away when the numbers or the exit do not stack up. So this is the balanced view rather than the sales pitch.
We cover the genuine advantages, the real downsides, a fully worked cost example on a £200,000 loan, the situations where bridging is the wrong tool, and the safer alternatives worth checking first.
The pros: what bridging does well
Bridging exists because term lending is slow and inflexible. Its strengths are real, and for the right deal they are hard to replicate.
Speed
A bridging loan can complete in 5 to 15 working days, against six to twelve weeks for a commercial mortgage. When a deadline is fixed, an auction completion date, a seller who wants out fast, a chain about to break, that speed is the whole point. It is the single most common reason our clients use bridging.
Flexibility
Bridging lenders underwrite the asset and the exit rather than years of accounts. That makes them comfortable with property and situations that term lenders avoid: a building that is currently unmortgageable, a part-complete refurbishment, a mixed or unusual use, a borrower whose accounts do not yet tell the full story. The loan is a means to an end, not a 25-year commitment.
Auction and refurbishment use
Buy at auction and you typically have 28 days to complete. No mainstream commercial mortgage reliably completes in that window, but bridging does. Bridging also funds light refurbishment that lifts a property to a mortgageable or lettable standard, after which you refinance onto a term product at a better rate. Our [property finance calculators](/calculators) help you model the numbers before you bid.
No early repayment charges, usually
Most bridging loans let you repay early with no penalty beyond any minimum interest period. If your exit arrives ahead of schedule, you stop paying interest. That is the opposite of a term mortgage, where early repayment often triggers a charge. It rewards a clean, quick exit.
It buys time to add value
Sometimes the property itself is the problem: it is empty, in poor repair, or has no lease, so no term lender will touch it yet. Bridging gives you the months needed to fix that, whether by refurbishing, re-letting, securing planning or resolving a title issue, and turn an unmortgageable asset into a mortgageable one. The bridge is then repaid by the very refinance it made possible. Used this way, the cost of bridging is really the cost of unlocking a deal that was otherwise closed.
The cons and downsides
Now the other side. These are the downsides that matter, and none of them should be a surprise on the day you sign.
Cost
Bridging is expensive. Commercial bridging rates run at roughly 0.70% to 0.95% per month, which is about 8.5% to 11.0% a year, several times the cost of a term commercial mortgage at 6.0% to 9.0%. The monthly quoting convention can make it look cheaper than it is. Always annualise the rate to compare it properly. To put it in context, £300,000 borrowed on bridging at 0.85% a month costs around £2,550 in interest every month, roughly £30,600 across a year. The same £300,000 on a commercial mortgage at 6.5% costs closer to £19,500 of interest a year. The gap is the price of speed and flexibility, and it only makes sense when speed or flexibility is genuinely worth paying for.
The fees stack up
The headline rate is only part of the cost. On top sit an arrangement fee of 1.5% to 2% of the loan, a valuation fee, your legal costs and the lender's, and sometimes an exit or administration fee. Added together these can equal a month or two of interest on their own. A loan that looks cheap on rate can be expensive on total cost once the fees are in.
Short terms create exit pressure
Bridging terms are short, typically 6 to 18 months. The clock starts on day one. If your exit slips, a sale that falls through, a refinance that takes longer than expected, a refurbishment that overruns, you can find yourself approaching the end of the term without a way to repay. That pressure is the source of most bridging horror stories.
Default rates are punitive
Miss the exit and the consequences escalate fast. Default interest rates are materially higher than the loan rate, often doubling the monthly cost, and they compound. A modest overrun can turn an expensive loan into a punishing one within weeks. This is why a realistic exit timeline, with a buffer built in, matters more than the rate.
Your security is at risk
A bridging loan is secured against property, usually with a first legal charge and often a personal guarantee from the directors. If you cannot repay and cannot refinance, the lender can enforce and sell the security to recover its money. This is genuine risk, not small print, and it is the reason bridging should never be used without a credible exit.
How the interest is charged
Bridging interest is usually handled in one of three ways, and which one applies changes your cashflow more than the headline rate does.
**Retained interest** is the most common structure on commercial bridging. The lender calculates the interest for the whole term up front and holds it back from the advance. You borrow, say, £200,000 but receive less on the day, because the interest for the term is retained. Nothing leaves your pocket month to month, and if you repay early the unused retained interest is usually refunded.
**Rolled-up interest** adds the interest to the loan balance each month, so it compounds and is settled in full at the end alongside the capital. Again there are no monthly payments, but the debt grows as the term runs.
**Serviced interest** works like a normal loan: you pay the interest monthly from your own funds and repay the capital at the end. It keeps the balance flat but requires income to cover the payments, which is why it suits fewer bridging borrowers.
Most commercial bridging is retained or rolled up, precisely because the borrower often has no income from the property during the term. It is worth knowing which structure a quote assumes, because a retained-interest facility reduces the net cash you actually receive on completion day.
What a £200,000 bridging loan actually costs
Numbers make the point better than adjectives. Here is an illustrative commercial bridging loan of £200,000 over a 9-month term, at a monthly rate of 0.85% with a 2% arrangement fee.
| Cost component | Amount |
|---|---|
| Interest (0.85% pm x £200,000 x 9 months) | £15,300 |
| Arrangement fee (2% of £200,000) | £4,000 |
| Valuation fee | £1,000 |
| Legal fees (borrower and lender, dual representation) | £1,800 |
| Total cost over 9 months | £22,100 |
That is £22,100 to borrow £200,000 for nine months, or about 11% of the loan. Repay after four months instead of nine and the interest falls to around £6,800, bringing the total nearer £13,600, which shows how powerfully the term drives the cost. Stretch past the term into default, and the figure climbs sharply the other way. The example assumes rates and fees typical in 2026; your actual figures depend on the lender, the property and the loan-to-value. Our guide to [commercial bridging loan rates and costs](/knowledge-hub/commercial-bridging-loan-rates-costs) breaks each component down further.
When bridging is the wrong tool
Bridging is the wrong tool far more often than the marketing suggests. Walk away, or at least pause, when:
- There is no clear exit. If you cannot say precisely how the loan will be repaid, and evidence it, bridging is a bet rather than a plan. This is the single biggest red flag.
- The margin is thin. If the profit on the deal barely exceeds the cost of the finance, one delay or one cost overrun wipes out the return and then some.
- The timeline is long. Bridging is for months, not years. If you need finance for two or three years, a term product almost always costs less, even at a higher loan-to-value.
- A term mortgage would complete in time. If there is no real deadline, the speed premium buys you nothing. Use the cheaper product.
Take a common example. A buyer eyes a £250,000 unit expecting to refinance within six months, but the refinance depends on a tenant they have not yet signed. If the letting slips, the exit slips, and every extra month adds interest and fees on top of a deal whose margin was already thin. The deal was not wrong, but the exit was not yet real. Waiting until the tenant is signed, or building a bigger buffer into the term, is what turns a risky bridge into a sensible one.
We would rather tell you a deal does not work than arrange a loan that puts your property at risk. If bridging is not right, we will say so.
Safer alternatives to consider first
Before committing to bridging, check whether one of these fits:
- A commercial mortgage. If there is no deadline and the property is mortgageable, a term commercial mortgage is far cheaper. See our comparison of bridging versus a commercial mortgage.
- A commercial remortgage or further advance. If you already own property with equity, releasing it through a remortgage can fund a purchase more cheaply than bridging.
- Extending the deadline. Sometimes a conversation with the seller or auctioneer buys enough time to use term finance. It costs nothing to ask.
- A stronger exit before you borrow. Securing a mortgage offer in principle for your refinance, or exchanging on the sale that repays the bridge, before you draw the loan removes most of the risk. See our guide to exit strategies for bridging finance.
Bridging has a genuine place. It is simply a specialist tool, not a default. Used with a firm exit and a realistic timeline, it is powerful. Used without either, it is dangerous. If you want an honest view on whether it fits your deal, [talk to us](/contact).
*Written by Matt Lenzie, Founder of Commercial Mortgages Broker. Ex-Lloyds Bank & Bank of Scotland.*