I've sat on both sides of this desk. As an underwriter I turned down plenty of deals that looked fine on paper but had no clear way out. Now, from the broker's side, I'm still asking the same question first: how does this loan actually get repaid? That question has always mattered, but it matters more now than it did five years ago, because the market has grown up fast and lenders have got a lot more disciplined about what they'll accept as proof.
Look at the numbers. New bridging completions hit £2.8 billion in the first quarter of 2025, matching the record set the quarter before, in a period that's usually quieter due to seasonal slowdown. Applications went the other way entirely, surging to £18.34 billion, a 55.3% jump on the previous quarter. That's an enormous spike in demand chasing a market where average loan size sits around £540,000, and where BDLA lender members now carry a combined loan book of just under £13 billion. (BDLA Q1 2025 data)
When that much capital is on the books, lenders aren't just pricing risk on the way in, they're stress testing the way out before they'll commit. If you're a smaller developer or investor using bridging or development finance, that means your exit needs to be evidenced, not assumed.
The two routes that matter
Most bridging exits fall into one of two camps: sale or refinance. Underwriters know this, and they will ask you to prove whichever one you're claiming, properly, before they'll approve.
Sale exit. You need recent estate agent comparables, not a valuation from a year ago and not the figure you had in your head when you bought the site. Comparables need to reflect what's actually selling now, in your postcode, in your property type. A lender isn't interested in what the market did eighteen months ago. They want evidence the number stacks up today.
Refinance exit. You need a named lender agreement in principle, not a vague statement that "refinance will be available." And critically, you need confirmation that the post works value actually supports the takeout facility. That means the loan to value on the finished, refinanced deal has to work against the real end value, not the value you're hoping the works will create.
If you can't produce one of these two things convincingly, you shouldn't be surprised when the loan gets declined or the terms get worse.
The BTL refinance trap
This is one I see catch people out constantly. You arrange a bridge with a specific buy to let remortgage in mind. Rates look fine at the time, the numbers work, everyone's happy. Then twelve months pass, rates move, and by the time you're actually exiting, you're not looking at the product you planned for, you're looking at whatever's live on the market that day, which is often priced higher.
The rental cover calculation that worked at the point of application might not work at the point of exit if rates have gone up. Lenders assess this on rental income against the mortgage payment, and if the sums no longer stack up at the higher rate, your refinance exit isn't as solid as you thought it was.
The fix is simple in principle: stress test your exit against current rates and rental cover, not the rates you started with. Build in some headroom. Don't assume the market will still look the way it did when you first arranged the loan.
Development finance: the twelve month test
On development finance, lenders will fund a completed scheme readily. What they won't fund is a scheme with no credible repayment plan within twelve months. That's the line in the sand. If your exit relies on hope rather than a documented route, expect resistance from day one.
For multi unit schemes, partial release structures matter. Being able to sell or refinance units individually as they complete, rather than needing the whole scheme done and dusted before any money comes back, gives a lender confidence that repayment isn't an all or nothing bet. It also gives you flexibility if the market slows partway through.
Alongside that, you need a documented contingency route. What happens if sales are slower than expected. What happens if a refinance lender pulls back. A credible plan B, written down and thought through, is often what separates an approved deal from a declined one.
The pitfalls that keep coming up
A few mistakes show up again and again, and they're avoidable.
Pricing to peak values instead of current comparables. If your exit numbers are based on what the market did at its high point rather than where it sits now, you're building your repayment plan on a figure that might not exist anymore.
Ignoring the six month ownership rule. Many BTL remortgage lenders won't refinance a property within six months of purchase. If your bridge is due for exit before that window closes, your refinance plan isn't actually available to you yet, no matter how good the numbers look.
Relying on a re bridge. I've seen deals where a re bridge gets accepted at application stage, everyone breathes a sigh of relief, and then it gets declined at renewal because circumstances or the property or the lender's appetite has changed. A re bridge is not a guaranteed fallback. Treat it as a last resort, not a plan.
What this means in practice
None of this is about ticking boxes to keep an underwriter happy. It's about making sure your numbers hold up under pressure, because markets move and twelve months is a long time. When I put a deal together, I'm stress testing the exit the same way a lender will, before it ever reaches their desk. With sourcing technology that checks real rates and real criteria across more than 100 lenders, and twenty odd years of having sat on the other side of the underwriting table, that's the job: making sure the repayment route stands up to scrutiny before anyone else asks the question.