How Bridging Loans Work

A bridging loan is short-term, property-secured finance that bridges a timing gap between needing money now and a longer-term solution becoming available. The loan is secured against property, interest is charged monthly, and repayment is made in full at the end of the term when the exit, typically a sale or a mortgage, completes.

How does a bridging loan work?

You borrow money against a property you own or are purchasing. The lender takes a legal charge over that property as security. Interest is calculated monthly on the outstanding balance and is either paid monthly (serviced), added to the loan balance (rolled up), or deducted from the advance upfront (retained). At the end of the agreed term, you repay the full loan balance plus any accrued interest in a single payment, funded by the sale of a property or refinance onto a longer-term mortgage.

The loan is not structured like a repayment mortgage. You are not making monthly capital payments that reduce the balance over time. You are paying for the use of money for a defined period, and the entire capital sum is repaid when the exit event completes. This is what makes bridging suitable for time-critical situations where speed and flexibility matter more than monthly cost.

Unlike a mortgage, the lender's primary concern is not your income. It is the value of the security property and the quality of the exit strategy. A borrower with no employment income can obtain a bridging loan if they have sufficient equity in the security and a credible plan to repay.

What are bridging loans used for?

Bridging finance serves any situation where there is a genuine funding gap and a clear, time-bound route to repayment. The most common uses in the UK market are:

Chain break. Your property chain collapses but you want to protect the purchase. A bridging loan secured against your existing home lets you complete on the new property. When your existing home sells, the bridge is repaid.

Buy before you sell. You have found a property you want to buy before your current home is on the market or under offer. Bridging gives you the funds to proceed without waiting.

Auction purchase. Most UK property auctions require completion within 28 days of the hammer falling. A mortgage takes eight to twelve weeks. A bridging loan can complete within that window, with the exit being either a sale or a refinance once the works or planning are resolved.

Property refurbishment. Where a property is in a condition that makes it unmortgageable, a bridging loan funds both the purchase and the works. Once the property is habitable and valued at the improved figure, it refinances onto a buy-to-let or residential mortgage.

Development exit. A developer has completed units but the long-term finance or sales have not yet completed. A development exit bridge releases equity from the finished scheme, repays the development loan, and buys time for sales or a term refinance.

Commercial and investment acquisitions. Where an investment opportunity is time-sensitive and longer-term commercial finance cannot be arranged quickly enough, bridging provides the interim funding.

What is the difference between open and closed bridging loans?

Open and closed bridging loans differ in whether the exit date is fixed or in progress, which affects your rate and lender options.

In practice, most bridging loans arranged in the UK are open bridges, because the exit, whether a sale or a refinance, is in progress but not contractually locked in at the point of application. Open does not mean the exit is uncertain; it means it is not yet legally committed to a date. Lenders will still assess whether the exit is realistic.

What is the difference between first charge and second charge bridging loans?

The charge position is a legal claim on the property that determines repayment priority if the property is sold or enforced, and directly affects your rate, maximum LTV, and whether existing lender consent is needed.

First charge bridging gives the lender primary claim over the property. This applies when the security has no existing mortgage, or when the bridging lender pays off the existing mortgage as part of the transaction. First charge loans typically achieve up to 70% to 75% LTV and attract the lowest rates in the bridging market, from around 0.55% per month, because the lender's security position is strongest.

Second charge bridging sits behind an existing mortgage. The first charge lender retains priority; the bridging lender takes what remains if the property sells. This suits borrowers who want to retain an existing mortgage, perhaps locked into a favourable rate, while raising additional short-term funding. The trade-off is higher cost, typically 0.85% to 1.1% per month, and the requirement to obtain written consent from the first charge lender, which can add one to two weeks to completion. Maximum LTV across all charges combined usually caps at 70% to 75%.

The choice between first and second charge is often dictated by your circumstances rather than preference. If you have an unencumbered property, first charge is straightforward. If an existing mortgage is in place and breaking it would trigger early repayment charges that outweigh the higher bridging rate, second charge is the pragmatic option.

What is the difference between regulated and unregulated bridging loans?

The regulated/unregulated distinction determines which lenders can offer the product, what rules govern the transaction, and what protections the borrower has. For a full breakdown, see our regulated vs unregulated bridging guide.

Regulated bridging requires advice from an FCA-authorised broker. The additional compliance steps mean completion takes slightly longer, but borrowers gain access to the Financial Ombudsman Service if a dispute arises. See our dedicated page on regulated bridging loans for full criteria.

How does bridging loan interest work?

Bridging interest is charged monthly, not annually, and is available in three structures: serviced (monthly payments), rolled-up (compounded and paid on exit), or retained (deducted upfront).

Serviced interest means you pay interest monthly throughout the term, exactly as you would with a mortgage. The loan balance stays flat. Total interest cost is lower because there is no compounding, but you need income or cash reserves to meet the monthly payments.

Rolled-up interest means interest is added to the outstanding balance each month. Nothing is paid during the term. The full balance, including all accrued interest, is repaid on exit. This suits refurbishment projects or acquisitions where the property is not generating income. The trade-off is a higher total cost because you pay interest on a growing balance.

Retained interest means the lender advances additional funds upfront to cover a set number of months of interest, which are deducted from the net loan you receive. You receive less cash but owe the full facility. If you repay early, some lenders rebate unused retained interest; others do not. Checking this before signing is important.

For current rate ranges, fee structures, and worked cost comparisons, see our bridging loan rates guide.

What is the application process for a bridging loan in the UK?

A bridging loan application typically follows a six-step process from confirming your exit strategy through to completion and drawdown, taking two to four weeks for straightforward cases.

How does a bridging loan work in practice?

What do lenders assess when underwriting a bridging loan?

Bridging lenders assess security quality, exit credibility, and borrower track record rather than income affordability as the primary factors in underwriting.

The security property. Lenders want property they could sell quickly if the loan defaults. Standard residential in major UK cities is easiest to place. Unusual property types, including HMOs, properties above commercial units, ex-local authority high-rise, and anything requiring heavy structural works, command higher rates or fewer lender options.

Loan to value. The lower the LTV, the more lenders will compete for the loan and the sharper the rate. Sub-60% LTV on standard security opens most of the market. Above 75% LTV, options narrow significantly.

Exit strategy. This is where most bridging loan applications either succeed or fail. Lenders want a realistic, time-bound plan for repayment. An AIP from a mortgage lender for the refinance, exchanged contracts on a sale, or a detailed development appraisal showing a credible sales programme all carry weight. "I'll sell it eventually" does not.

Credit history. Clean credit opens more lenders and better rates. Adverse credit, including CCJs, mortgage arrears, or IVAs, is not an automatic decline at many bridging lenders, but it narrows the field and increases cost. The bridge itself is not credit-scored the way a mortgage is; lenders take a more holistic view.

Borrower experience. For property investment or development bridging, lenders look at track record. A developer with five completed schemes will have more lender options, and better terms, than a first-time developer. This does not prevent first-time developers from borrowing; it means the deal needs to be structured more conservatively.

What exit strategies are accepted for a bridging loan?

The three primary accepted exit strategies are sale of property, refinance onto a term mortgage, and development exit through sales or cash redemption. The exit is the most important part of any application and lenders assess it carefully.

Sale of property. The most common exit for regulated bridging. A property is listed, sold, and the sale proceeds repay the bridge. A credible sales price, supported by estate agent appraisals, strengthens the case. Properties that are unusual, remote, or in a weak local market make lenders cautious because they take longer to sell.

Refinance onto a term mortgage. Common for buy-to-let and investment bridging. The works are completed, the property reaches a mortgageable condition, and a buy-to-let or commercial mortgage replaces the bridge. The risk is that the improved value does not support the loan amount required, or that rental income is insufficient to meet lender affordability criteria at the point of refinance.

Development exit and sales. Units are completed and sold individually, with each sale reducing the bridging balance. The risk is sales running slower than projected. Lenders typically want to see a credible sales programme with independent support from a local agent before advancing.

What we see most consistently in the deals we arrange is that the exit strategy issues arise not from market conditions but from borrowers underestimating time. A sale they expect to complete in eight weeks takes fourteen. A refinance delayed by a survey issue adds six weeks. Building two to three months of contingency into your exit timeline is not pessimism; it is how experienced borrowers avoid extension fees and enforcement risk.

Do you pay stamp duty when using a bridging loan to buy before you sell?

Yes, owning two residential properties simultaneously triggers higher Stamp Duty rates in England and Northern Ireland (an additional 5% surcharge on standard rates), though this is refundable within three years if the old home sells.

On a £400,000 purchase, standard SDLT would be around £10,000. With the higher rate surcharge, this rises to approximately £30,000. That is a significant upfront cost that needs to be built into your bridging loan or funded from savings.

The refund mechanism matters. If you sell your previous main residence within three years of completing the new purchase, you can apply to HMRC for a refund of the surcharge. In practice, most chain break and buy-before-sell bridging deals complete and exit within months, so the refund is recoverable. You still need to fund the higher amount at completion, as the refund is only processed after the sale.

Different rules apply in Scotland under the Land and Buildings Transaction Tax, and in Wales under the Land Transaction Tax. Thresholds and surcharge rates vary under each regime. Confirm the calculation with your solicitor before you complete.

Property investors using bridging for additional buy-to-let or investment properties pay the higher rate permanently; they are not replacing a main residence, so the refund mechanism does not apply.

What are the alternatives to a bridging loan?

Cheaper alternatives to bridging exist including let-to-buy, secured homeowner loans, remortgage, and development finance, but only where timing is not critical.

Let-to-buy. Rather than selling your existing home immediately, you convert it to a rental using a let-to-buy mortgage, release equity as a deposit for the new purchase, and buy the new home with a standard residential mortgage. This avoids bridging entirely where timescales allow, though it requires rental income that meets lender affordability criteria and involves becoming an accidental landlord in the interim.

Secured homeowner loan. A second charge loan over a longer term, typically five to twenty-five years, can raise capital at rates of 6% to 10% APR, substantially cheaper than bridging over the same period. This works where timing is not critical and you need capital rather than purchase finance.

Remortgage. Releasing equity through a remortgage is considerably cheaper than bridging if the property is already mortgageable and the six to ten week process fits your timeline. Early repayment charges on the existing mortgage need to be factored in.

Development finance. For larger construction or conversion projects, dedicated development finance with staged drawdowns matched to build milestones is usually more appropriate and better priced than a straight bridge held for the full construction period.

If an alternative can meet your deadline and loan requirement, it will almost always cost less than bridging over an equivalent period. Use bridging only when speed or the nature of the transaction genuinely demands it.

What are the risks of taking out a bridging loan?

The main bridging loan risks are cost escalation if the exit is delayed, exit failure leading to enforcement, and valuation shortfall if property values fall during the term.

Cost escalation. At 0.8% per month, three extra months on a £500,000 loan adds £12,000 in interest. Factor in extension fees and any legal costs for renegotiating terms, and delays become expensive quickly. The monthly rate makes bridging appear cheaper than it is compared to an annual mortgage rate, but the compounding effect of a prolonged term can erode the economics of the deal.

Exit failure. If the sale falls through, the refinance is declined, or the development stalls, the lender will enforce their security. For most borrowers, this means the risk of losing the secured property. This is not a theoretical risk; it happens, particularly on deals where the exit was optimistic to begin with. A bridge should only be taken out where the exit is realistic, not where it is hoped for.

Valuation shortfall. If property values fall between loan origination and exit, the refinance may not clear the outstanding balance. Borrowers then need to inject additional cash or negotiate with the lender.

Your property may be repossessed if you do not repay the loan as agreed.

What costs should you budget for on a bridging loan?

Beyond monthly interest, budget for arrangement fees (1% to 2%), valuation fees (£500 to £1,500), solicitor fees, lender legal fees, and exit administration charges, which combined can add £30,000 to £35,000 on a £500,000 six-month loan at 0.75% per month.

For a full breakdown of every cost line, see our bridging loan costs and fees guide.

Frequently asked questions