Bridging Mortgages: What Landlords and Individuals Actually Need to Know

Bridging exists to solve a timing problem, not a cost problem. Understood correctly, it’s a legitimate and sometimes essential tool for landlords and individuals who need to move fast or who don’t fit a high-street lender’s box.

What a Bridging Loan Actually Is

A bridging loan is a short-term, secured loan against property, typically running from one month to 24 months, though most exits happen well inside 12. It “bridges” the gap between two financial events: buying a new property before your existing one sells, completing on an auction purchase within a tight deadline, refurbishing an uninhabitable property before it qualifies for a standard mortgage, or untangling a broken property chain.

Unlike a residential or buy-to-let mortgage, a bridging lender isn’t primarily underwriting your income. They’re underwriting the asset and your exit strategy, the specific, credible plan for how the loan gets repaid. No exit plan, no loan, regardless of how strong your finances look elsewhere.

Open vs Closed Bridges

Closed bridging loans have a fixed, contractually certain repayment date for example, you’ve exchanged on the sale of another property and completion is set. These are lower risk for the lender and tend to come with slightly better rates.

Open bridging loans have no fixed exit date, just a maximum term. You might be planning to refinance onto a mortgage once a refurbishment is finished, but you don’t have a guaranteed completion date yet. Lenders charge more for this uncertainty and will scrutinise your exit story harder.

First Charge vs Second Charge

A first charge bridge sits in first position against a property with no existing mortgage, or one being repaid on completion. A second charge bridge sits behind an existing mortgage that stays in place which is useful for releasing equity without disturbing a low-rate residential mortgage, but it adds risk for the lender (and therefore cost for you), since they’re repaid only after the first charge holder in a default scenario.

Retained interest or rolled up interest or serviced?

When considering a bridging loan, retained interest or rolled up interest are the most popular options. Interest always has to be paid on bridging loans and it can be paid in several different ways. Firstly, there is retained interest, which is a popular interest type in bridging finance. Secondly, you have rolled up interest, also known as capitalised interest. And finally, there is serviced interest.

Here’s some examples for illustrative purposes: (Note: any fees etc have been excluded to keep the examples simple)

Retained interest

Retained interest means that interest paid on a loan isn’t paid monthly. Instead, all the interest on the term is subtracted from the initial bridging loan sum. Consequently, you would be expected to pay back the full amount you originally applied for at the end of your term.

• You take out a gross bridging loan to the value of £100,000
• Interest on the loan is set at a rate of 1% a month 
• Therefore, over a 12 month loan period, the lender would deduct £12,000 from the loan and you would receive £88,000 (12% of £100,000 = £12,000).
• So, in 12 months time, you would be expected to pay back the full £100,000
• If you settled the loan just before 6 months, you will get a rebate on the remaining interest. With a rebate of £6000 you would only pay back £94,000 .

Rolled up interest

Rolled up interest on a bridging loan is applied to the balance owing each month. If you take the loan over 12 months, the rolled up interest is calculated at the outset on a monthly basis. Rolled up interest is sometimes be referred to as capitalised interest.

Here is an example of rolled-up interest for a loan of £100,000 with 1% interest per month:

• You take out a gross bridging loan to the value of £100,000
• Interest on the loan is set at a rate of 1% a month 
• Therefore, over a 12 month loan period, the lender would deduct £12,682.47 from the loan and you would receive £87,318
• If you settled the loan just before 6 months, you will get a rebate on the remaining interest. However the rebate will be slightly less than the retained interest example

You can see that the compounding nature of the interest means that the total interest paid is slightly higher. Comparing a retained interest loan, after four months the interest would be £4000. With the rolled up interest loan it would be £4,060.30. Slightly higher but not enough to deter most people if the remaining terms of the loan are favourable.

The key point in both of these examples is that you are not paying the interest each month. Instead you are borrowing a sum of money as part of the loan. This will cover the interest payments for you until the whole loan is repaid. Therefore you are paying interest on this amount too.

Serviced interest

Serviced interest is arguably the more straightforward of the three interest types. So, it is interest on a loan that you pay off on a monthly basis. Here is an example:

• You have a loan of £100,000 over a 12 month period
• Interest on the loan is set at rate of 1% per month
• So, you will pay £1,000 monthly interest on the loan. That’s £12,000 over a 12 month term

However, interest types used vary from lender to lender. So, one lender may use retained interest while another may use rolled-up interest. 

So, you can see that the difference in cost between these options isn’t great. By adding the interest to the loan you will pay a little extra in interest.

Impact on how much you can borrow

To keep the math’s simple, let’s say you are borrowing a 75% loan to value (LTV) loan over 12 months, at 1% per month on a property valued at £100,000. This means you will get a gross loan of £75,000 less any fees or interest deducted at completion.

Where you are servicing the loan each month there is no interest to be deducted. Therefore, the amount you get in hand will be approaching £75,000.

However, If you chose to retain or roll up the interest into the loan, this amount is deducted from the gross loan at completion. Using the examples above, you would receive £12,000 to £12,682 less in hand.

This becomes very important when you are trying to raise the maximum LTV on a bridging loan. If there is plenty of equity available it is less of an issue for most borrowers.

Is Serviced interest a better option?

Maximise the amount of cash you raise, by considering a serviced loan. However, lenders will only agree to this if you can demonstrate you can afford to service the loan, as well as your other outgoings. If you have another mortgage this can be a challenge. Also, having affordability checks means supplying extra information and can slow the process down, when the idea of bridging is often speed.

In conclusion, if you are considering bridging finance, there are many factors to think about. However, there may be aspects that you could be unsure about, such as extra costs or the type of interest.

What Bridging Loans Actually Cost

Bridging finance is priced monthly, not annually, commonly somewhere between roughly 0.55% and 1.5% per month depending on loan-to-value, asset type, and lender risk appetite. That sounds small until you annualise it. A 0.75% monthly rate is roughly 9% a year before fees, and weaker-profile deals run higher still.

On top of the rate, expect:

• Arrangement fee: typically 1–2% of the loan, taken on drawdown.
• Valuation fee: paid upfront, varies by property value and complexity.
• Legal fees: you usually pay for both your own solicitor and the lender’s.
• Exit fee: some lenders charge this, many don’t so check the offer letter, not just the headline rate.
• Broker fee: if you use one, commonly 1–2%, though a good broker can save multiples of this by finding the right lender first time.

Many bridging loans use “retained” interest, where the interest for the full term is deducted from the gross loan at the start rather than paid monthly. This protects you from needing spare cash flow during the loan, but it also means you’re paying interest on funds you may not need for the entire term, and it reduces the actual cash you receive at completion. “Serviced” interest, paid monthly out of pocket, costs less overall but demands cash flow discipline. Know which one you’ve been offered.

Loan-to-Value: Tighter Than You Might Expect

Bridging LTVs are generally more conservative than standard mortgages, typically capping around 70–75% of the property’s value, sometimes lower for unusual assets like derelict buildings, land without planning permission, or non-standard construction. Lenders will often work from the *lower* of purchase price or valuation, and for refurbishment bridges, day-one LTV and post-works LTV are assessed separately, with funds for the works sometimes released in stages rather than upfront.

Why Landlords Use Bridging Specifically

For landlords, the most common use case is auction purchases, where completion is typically required within 28 days as it’s far faster than most buy-to-let mortgage lenders can underwrite and complete. Bridging fills that gap, with the landlord refinancing onto a standard buy-to-let mortgage once the property is habitable and tenanted.

The second major use case is “uninhabitable” property — anything lacking a working kitchen or bathroom, or with significant structural issues, generally won’t qualify for a mortgage at all. A bridge funds the purchase and refurbishment, and the exit is a remortgage once the property meets lending criteria. This is the core mechanic behind most “buy, refurbish, refinance” strategies.

The third is portfolio timing: releasing equity from one property in a portfolio to fund a deposit on another, without waiting for a sale to complete or for refinancing across multiple titles to align.

Why Individuals Use Bridging

Outside of landlords, the most frequent scenario is chain-break: you’ve found your next home but your buyer has fallen through, or completion dates won’t align, and you need to complete on the purchase before your sale closes. Bridging covers the gap, with the loan repaid in full once your existing property sells.

Less commonly, individuals use bridging to buy property at auction for personal use, to fund a divorce settlement that requires releasing equity against a fixed deadline, or to purchase before planning permission or probate completes on an inheritance, where the eventual asset is certain but the timing isn’t.

The Real Risk: What Happens If the Exit Fails

If your exit strategy doesn’t materialise on schedule, for example the sale falls through, the refinance gets declined, the refurbishment overruns, you are still on the clock, accruing interest at bridging rates, with a lender that has a legal charge over your property. Lenders will usually grant extensions, but at their discretion and often at a higher rate or fee. In a genuine default, the lender’s route to recovery is repossession and sale of the secured asset, the same as any secured lending, just on a much shorter fuse.

This is why a credible, evidenced exit strategy isn’t paperwork box-ticking. It’s the single biggest determinant of whether the loan is a sensible decision or a expensive mistake waiting to happen. Before taking a bridge, you should be able to answer, concretely: what is the exit, what is the backup if the primary exit slips, and can you afford the worst-case timeline at the worst-case rate.

Choosing a Lender

The bridging market includes high-street-adjacent specialist lenders, challenger banks, and a long tail of smaller private lenders, and pricing and criteria vary significantly between them for what looks like the same deal. A specialist bridging broker earns their fee here, not by finding you *a* lender, but by finding the one whose risk appetite actually matches your specific asset and exit, since a mismatch shows up later as a declined extension or a forced sale.

Frequently Asked Questions

How quickly can a bridging loan complete? Bridging loans can complete in as little as 5–10 working days where the legal work is straightforward and the lender already has the valuation in hand, though 2–4 weeks is more typical. This is still significantly faster than a standard mortgage, which usually takes 4–8 weeks, and it’s the main reason bridging suits auction purchases with a 28-day completion deadline.

Can I get a bridging loan with bad credit? Yes, in many cases. Bridging lenders weight the asset and exit strategy more heavily than personal credit history, so adverse credit, including missed payments, defaults, or even a past bankruptcy, doesn’t automatically rule you out. Pricing will typically be higher to reflect the added risk, and the exit plan will be scrutinised more closely.

What happens if I can’t repay a bridging loan at the end of the term? If your exit strategy hasn’t completed by the end of the term, most lenders will consider a short extension, usually at a higher rate or for an additional fee, provided you can show the exit is still on track. If no credible exit materialises, the lender’s legal charge over the property gives them the right to force a sale to recover the debt, so it’s worth having a backup exit before you commit, not after things go wrong.

Is a bridging loan regulated by the FCA? It depends on the property’s use. A bridging loan secured against a property that is or will be the borrower’s main residence is a regulated mortgage contract and falls under FCA rules. A bridging loan secured against a buy-to-let, commercial, or investment property is typically unregulated, which means fewer standardised consumer protections and more variation between lenders, so reading the offer terms carefully matters more, not less.

Do you need a deposit for a bridging loan? Yes. Lenders typically cap loan-to-value at 70–75% of the property’s value, so you’ll need to fund the remaining 25–30% yourself, whether from cash, equity in another property, or a second charge arrangement. The exact amount depends on the asset type, with unusual properties such as derelict buildings or land without planning permission often requiring a larger deposit.

Can you get a bridging loan for an uninhabitable property? Yes, this is one of the most common uses of bridging finance, since standard mortgage lenders generally won’t lend on a property without a working kitchen or bathroom. A bridging loan funds the purchase and refurbishment, with the borrower exiting onto a standard mortgage once the property meets normal lending criteria.

How is bridging loan interest calculated? Interest is charged monthly rather than annually, and is structured in one of three ways: “serviced,” where you pay interest out of pocket each month, “retained,” and “rolled” up.

At 3mc, we have a team of expert advisers who can discuss all your mortgage requirements. If you would like to discuss your options, give the 3mc team a call on 0161 962 7800.

All calls are recorded for training and monitoring purposes. 3mc for intermediaries only.

*Your home may be repossessed if you do not keep up repayments on your mortgage. 3mc (UK) Ltd is authorised and regulated by the Financial Conduct Authority and is entered on the Financial Services Register https://register.fca.org.uk/s/ under reference 302992. Please note: The FCA do not regulate Business Buy to Let Mortgages.