The True Cost of Bridging Finance: Rates, Fees & Charges

When developers and investors ask about the cost of bridging finance, the honest answer is that it depends on the sum of several distinct components: the monthly interest rate applied over the term, an arrangement fee charged by the lender, valuation and survey costs, legal fees on both sides of the transaction, and often a broker fee. Only by totalling every line item can you accurately assess whether a bridging loan is commercially viable for your project.

As a working approximation, a well-structured bridging loan arranged at competitive market terms typically costs between 1.5% and 3% of the loan amount for each month it is outstanding, once all fees are annualised across a short holding period. On a £500,000 loan held for six months, all-in costs could range from roughly £25,000 to £60,000 depending on rate, LTV, and fee structure. That wide band is why shopping the market properly — and understanding how lenders build their pricing — is not optional if you want to protect your profit margin.

Bridging finance is inherently short-term capital. Terms run from one month to 24 months, with 6–18 months being most common for property developers and investors. The brevity of the facility is part of what makes the annualised cost appear high when compared to a term mortgage, but the correct comparison is cost versus the commercial opportunity the loan enables, not cost versus a product that serves an entirely different purpose. For a full overview of how the product works in practice, see our bridging loans service page.

Unlike residential mortgages, bridging loan interest is quoted as a monthly rate rather than an annual percentage rate. In the current market, rates range from approximately 0.45% p.m. at the very lowest end — reserved for prime residential security, sub-60% LTV, and a clean, demonstrable exit — up to 1.5% p.m. or above for complex, higher-risk, or distressed scenarios. The majority of standard bridging transactions for property developers complete at rates between 0.65% p.m. and 0.95% p.m.

To convert a monthly rate to an indicative annual figure, multiply by 12. A rate of 0.75% p.m. equates to approximately 9% p.a. — meaningfully higher than a term mortgage but often justified by the short duration, the speed of drawdown, and the flexibility the facility offers. Crucially, if you hold a bridging loan for only four months, you pay four months of interest, not twelve.

Lenders offer three principal methods of charging interest. With rolled-up interest, charges accrue monthly and are added to the loan balance, then repaid in full when the facility is redeemed. This is the most common structure for development and refurbishment scenarios where the asset generates no monthly income. Retained interest works differently: the lender calculates the projected total interest for the full term at the point of drawdown and deducts it from the gross advance, so the borrower receives a net amount. The gross loan — on which arrangement fees and LTV limits are calculated — is higher than the net amount received. Serviced interest requires the borrower to pay interest monthly from their own funds; lenders typically offer a small rate discount for serviced facilities because they improve lender cashflow and reduce compounding risk.

Understanding net versus gross loan mechanics matters more than many borrowers realise. If interest is retained on a £500,000 facility at 0.75% p.m. over 12 months, the retained interest sum is approximately £45,000, meaning the gross loan is £545,000. Arrangement fees calculated at 1.5% on the gross loan produce a fee of £8,175 rather than £7,500 on the net figure. Over a full term, these differences compound into a meaningfully higher effective cost than the headline monthly rate implies.

Beyond the monthly interest rate, bridging facilities typically carry five to seven distinct charges. Some are payable upfront or at drawdown; others are deducted from the loan advance or settled on redemption. The table below sets out each fee and the typical market range.

Arrangement fees are the lender's origination charge and are almost universally calculated on the gross loan amount. At a typical rate of 1%–2%, a £1 million facility carries an arrangement fee of £10,000–£20,000. Some lenders allow this to be added to the loan and repaid at redemption, which is convenient but means the fee itself accrues interest over the term — a cost that is easy to overlook when comparing headline rates.

Exit fees are charged by some but not all lenders. Where they apply, they usually sit at 0.5%–1% of the redemption amount. A facility with a lower monthly rate but a 1% exit fee can cost more overall than one priced at a slightly higher rate with no exit charge, depending on the loan size and term. Always model the total cost across the anticipated holding period rather than focusing on the headline monthly rate in isolation.

Valuation fees are paid to the independent surveyor appointed by the lender and are non-refundable even if the loan does not complete. A standard residential property may cost £500–£800 to value; a larger commercial property, mixed-use site, HMO, or development plot will typically attract a fee of £1,500–£3,000 or more. On complex transactions involving multiple securities, valuations are required for each asset. Some lenders accept automated valuation models (AVMs) for lower-value standard residential properties, which eliminates or significantly reduces this cost.

Legal fees arise on two sides: the lender's solicitor and your own. Bridging lenders always instruct independent legal representation and pass the cost to the borrower. Lender legal fees on a standard single-property transaction typically run £1,000–£2,500; your own solicitor charges separately. On first-and-second-charge deals, multi-site facilities, or transactions involving complex title issues, total legal costs can be considerably higher. It pays to instruct a solicitor with bridging experience — those unfamiliar with the product can slow a transaction significantly, increasing the number of interest days you pay. Lender due diligence — including KYC, source-of-funds checks, and title review — runs in parallel to your own legal workstream and can be another pressure point if documentation is incomplete at the outset.

A bridging loan calculator is the quickest way to translate a headline monthly rate into the figure that actually matters: the total cost of capital across the term you expect to hold the facility. The input fields are usually loan amount (gross or net), property value (to derive LTV), monthly rate, anticipated term in months, arrangement fee, and exit fee. The calculator should return the total interest cost, the full fee schedule, net funds you actually receive at drawdown, and the redemption sum.

Most online calculators make one important simplification: they assume rolled-up interest and apply compound interest to the gross loan each month. For a retained-interest facility, the working is slightly different — the lender deducts the full projected interest sum at day one from the gross advance, which increases the effective arrangement fee base and reduces net funds. For a serviced-interest facility, interest is paid monthly from your own cashflow, so the redemption figure is simply the principal plus any exit fee. If you are comparing offers from different lenders, confirm which interest method each calculator assumes — comparing a rolled-up example against a retained-interest example on raw numbers is misleading.

A worked example helps make this concrete. A developer takes a £750,000 gross bridging loan at 0.75% p.m. on a 10-month term, with a 2% arrangement fee and no exit fee. On a rolled-up basis, total interest over 10 months compounds to approximately £58,400. The 2% arrangement fee on the gross loan is £15,000 (typically deducted at drawdown). Valuation and legal costs combined add roughly £3,500–£5,000. Total cost of the facility across the 10-month hold is therefore approximately £77,000–£79,000 — or about 10.3% of the gross loan. That is the figure the calculator should surface clearly; the headline 0.75% monthly rate on its own does not.

For a rough manual calculation, multiply monthly rate × number of months to get a non-compounded interest total, then add arrangement fee plus valuation and legal estimates. A proper calculator will compound monthly and factor in deducted fees, which gives a more accurate picture but is rarely more than 5–10% different from the manual estimate on typical transactions.

Bridging lenders price each case individually against a risk model. Unlike a standard mortgage where a published rate table largely governs the outcome, bridging rates are negotiated based on a holistic assessment of the security, the borrower, and the exit. These are the six variables that move your rate most significantly.

• Loan to value (LTV): The single largest pricing variable. Most bridging lenders will lend up to 75% LTV on a first-charge basis, with some specialist lenders stretching to 80% in specific circumstances. Rates at 60% LTV or below attract the most competitive pricing; above 70% LTV, expect a meaningful rate uplift.
• Security type and condition: Standard residential property in good condition commands the lowest rates. Semi-commercial, mixed-use, HMOs, and uninhabitable properties attract higher rates to reflect the reduced secondary market of buyers should the lender need to enforce. Development sites and land without planning command higher rates still. Light refurbishment bridging (cosmetic works with no structural change) typically sits at the keener end of pricing; heavy refurbishment bridging (structural alteration, change of use, or full gut renovation) prices slightly higher to reflect the additional build risk.
• Exit strategy clarity: Lenders lend short-term on the basis that there is a credible, evidenced route to repayment. A clear exit — sale of the property, refinance onto a term product, or receipt of a development loan drawdown — reduces lender risk and improves your rate. A vague or speculative exit attracts a premium.
• Borrower profile and track record: Experienced developers with a demonstrable record of delivering and exiting similar projects present lower risk than first-time borrowers. Adverse credit history, particularly recent mortgage arrears or County Court Judgements, will either increase the rate or preclude mainstream lender options entirely.
• Loan size: Larger loans often attract more competitive rates because lenders are deploying more capital per transaction and competition among funders increases. Loans above £2 million frequently access institutional-grade pricing that is materially below the standard rate card.
• First versus second charge: A second-charge bridging loan sits behind an existing first-charge mortgage, increasing lender risk. Second-charge facilities are priced accordingly — typically 0.2%–0.5% p.m. higher than equivalent first-charge lending — and not all lenders offer them.

For property developers comparing bridging against development finance, the rate differential narrows considerably on larger or longer projects. Our guide to development finance vs bridging loans sets out the scenarios where each product is more appropriate.

Whether bridging finance is worth the cost depends entirely on what you are using it for and what the alternative is. The product is designed to solve a specific problem: a funding requirement that is time-sensitive, short-term, and not well-served by conventional mortgage products. In those circumstances, the cost is not the primary question — the question is whether the opportunity justifies the cost of capital.

For property developers, bridging finance is commonly used to purchase at auction where 28-day completion is a hard contractual requirement, to acquire a site that is unmortgageable in its current condition, to access equity in an existing asset quickly to fund a deposit on a new acquisition, or to bridge the gap between completion of a development and receipt of development exit finance or sales proceeds. In each case, the cost of bridging is offset against the profit or opportunity protected by having the capital available.

Where bridging finance is less clearly justified is when it is being used as a substitute for properly planned long-term finance — for example, purchasing a buy-to-let property on a bridging loan with no credible refinance route in place, or holding a bridging loan for 18–24 months on an asset generating no income. In these scenarios, the all-in cost typically erodes returns to the point where the project is no longer commercially viable.

For auction purchases specifically, where speed is non-negotiable, bridging is often the only viable product. Our guide to bridging loans for auction purchases covers the mechanics and timeline in detail.

The single most effective way to reduce the cost of bridging finance is to access the whole market rather than the first offer you receive. Rates and fee structures vary significantly between lenders — the same transaction can be priced at 0.65% p.m. by one funder and 0.95% p.m. by another, with different arrangement fee structures, different exit fee positions, and different valuation requirements. The active specialist market includes challenger banks, institutional debt funds, and household-name bridging lenders such as Together, MT Finance, LendInvest, Shawbrook, and Octane, alongside smaller private credit funders with more flexible underwriting. An experienced broker with a panel of 100 or more lenders can identify the most competitive total-cost option across the full market, not just among the handful of lenders a single-channel relationship accesses.

Beyond market access, these practical steps reduce your all-in borrowing cost. First, reduce your LTV where you can: if your project allows you to put in additional equity, the rate saving at a lower LTV band frequently outweighs the opportunity cost of the capital. Second, have your exit strategy documented and evidenced before you approach lenders — a confirmed refinance offer in principle, a solicitor's report on title confirming no obstacles to sale, or heads of terms on a development loan all reduce the lender's perceived risk and open the door to keener pricing. Third, instruct a solicitor with bridging experience at the outset: legal delays extend the number of interest days you pay and can trigger extension fees if the term runs over. Fourth, prepare the full due diligence pack upfront — ID, proof of address, source of funds, company accounts, rent roll or appraisal, and a schedule of assets — so the lender's file is complete on day one. Fifth, always compare total cost — interest plus all fees over the anticipated term — rather than headline rate alone.

Construction Capital works with over 100 specialist and institutional bridging lenders across the UK market, giving us the breadth to source the most cost-effective structure for each project. Where interest can be serviced monthly, we regularly achieve sub-0.6% p.m. pricing for well-qualified borrowers. For larger or more complex facilities, we access funding lines that are not available through standard broker channels. To discuss your project, contact our team directly or explore our bridging finance service for more information on how we approach the market on your behalf.