How Do Bridging Loans Work?

A bridging loan works by giving the lender a short-term legal charge over a property. You draw down the funds, use them for your intended purpose, and repay the loan within the agreed term from your exit event, whether that is a property sale, a refinance, or another source of funds. The mechanics are similar to other secured lending, but the timelines are compressed and the exit strategy is central to the entire structure.

The application and approval process

Bridging applications move faster than commercial mortgage applications because lenders conduct a more focused assessment. They are primarily interested in two things: the value and quality of the security, and the credibility of the exit strategy.

The information a lender typically requires at the outset:

• Details of the property being used as security, including address, type, and current or purchase value

• A summary of the loan purpose

• A clear explanation of the exit strategy and the evidence supporting it

• Basic borrower information: name, company structure if applicable, and any adverse credit history

Many lenders will issue a credit-backed decision in principle (DIP) within 24 to 48 hours of receiving initial information. This is not a formal offer, but it gives enough confidence to proceed to the next stage.

An independent valuation of the security is then commissioned. For straightforward properties this can be completed within two to three working days. Once the valuation is in and the lender is satisfied with the exit strategy, a formal offer is issued. Legal work runs concurrently where possible, with the lender's solicitor registering a charge over the property. Once legal formalities are complete, the funds are drawn down.

How interest is charged

Bridging loan interest is quoted monthly and can be structured in three ways. Which you choose affects both your monthly cash flow and the total cost.

Monthly serviced interest means paying interest each month, as you would on a standard loan. This keeps the outstanding balance static throughout the term and produces the lowest total interest cost overall.

Retained interest means the interest for the full anticipated term is deducted from the loan advance at drawdown. If you borrow £500,000 at 0.75% per month for 12 months, the lender retains £45,000 in interest upfront and advances £455,000. No monthly payments are required, which suits borrowers who need to preserve cash flow. The net advance is lower but the total interest cost is the same as serviced, assuming the term runs as planned.

Rolled-up interest means interest accrues and is added to the outstanding balance each month, repaid along with the principal at the end of the term. No payments are required during the term, but interest compounds, meaning you pay interest on interest. Over a short term the difference is small. Over a longer term, rolled-up is materially more expensive than the alternatives.

For a full breakdown of how the different interest structures affect the total cost, see bridging loan rates and costs explained.

The role of the exit strategy

The exit strategy is not just part of the application, it is the foundation of the entire loan. Lenders assess the exit with as much scrutiny as the security, because a bridging loan without a viable exit is a default waiting to happen.

A strong exit strategy has three characteristics. It is specific. "I intend to sell" is not specific. "I have a buyer under offer and exchange is expected within six weeks" is. It is realistic, meaning the timeline accounts for the actual steps involved, including legal work, which borrowers consistently underestimate. And it has a contingency. If the primary exit fails, there is a fallback.

Where the exit is refinancing onto a commercial mortgage, lenders will want evidence that the borrower is likely to qualify for the long-term finance. For what that process involves, see our guide to how commercial mortgages work. For a broader picture of how secured lending works across different product types, see what is a secured business loan.

What happens at the end of the term

When the exit event occurs, the bridging loan is repaid in full, including any accrued or retained interest and applicable exit fees. The lender releases the charge on the property, recorded at HM Land Registry. The process is straightforward when the exit happens on time.

If the exit has not materialised before the term expires, contact the lender before the deadline. Most lenders will consider a term extension at an additional cost, typically 0.5% to 1% of the loan per month. This is not guaranteed, and lenders are under no obligation to extend. If the loan cannot be repaid and no extension is agreed, the lender can enforce the charge and, ultimately, force a sale of the property to recover the debt. Unlike residential mortgages, commercial bridging borrowers have fewer regulatory protections, so lenders can move to enforcement faster.