Guide
Second Charge Bridging
Loans Explained
Raise capital behind your existing mortgage without disturbing it. How second charges work and when they make sense.
What Exactly Is a Second Charge?
A second charge is a loan secured against a property that already has an existing mortgage (the first charge) on it. The “charge” refers to the lender's legal claim over the property. If the property is sold or repossessed, the first charge lender gets repaid in full before the second charge lender receives anything.
That priority of repayment is the entire reason second charges exist as a distinct product. Because the second charge lender sits behind the first charge lender in the queue, they carry more risk. More risk means higher rates — but it also means you don't need to touch your existing mortgage to raise capital.
The second charge is registered at the Land Registry behind your existing first charge. It is a completely separate facility with its own terms, rate, and lender. Your first charge mortgage continues exactly as before — same rate, same payments, same terms.
When a Second Charge Makes Sense
Second charges aren't always the right answer, but there are specific situations where they're clearly the better option. The decision usually comes down to the cost and disruption of refinancing your entire first charge versus paying a higher rate on a smaller second charge.
Your First Charge Has a Great Rate
If you locked in a low rate on your first charge — particularly a fixed rate at 2-3% — refinancing the entire facility at today's rates would cost you significantly more over the full term. A second charge at 0.9%/month on a smaller amount for 12 months can be far cheaper than losing a favourable long-term rate.
Early Repayment Charges Apply
Many BTL mortgages carry ERCs of 3-5% for the first 2-5 years. On a £500k mortgage, that's £15-25k just to exit. A second charge avoids triggering the ERC entirely. Do the maths — the higher rate on the second charge is often cheaper than the ERC alone.
You Need Capital Quickly
Refinancing a first charge typically takes 4-8 weeks. A second charge bridge can complete in 5-10 working days. When you're chasing an acquisition or need to act on a time-sensitive opportunity, speed matters more than rate.
You Only Need a Fraction of Equity
If your property is worth £1m with a £400k first charge and you only need £100k, refinancing the full £500k is unnecessary disruption. A £100k second charge is a cleaner, simpler transaction.
How LTV Works with Second Charges
LTV on a second charge is calculated as the combined LTV — your existing first charge balance plus the new second charge, divided by the current market value of the property.
Worked Example
Property value: £800,000
Existing first charge: £400,000 (50% LTV)
Second charge requested: £160,000
Combined debt: £560,000
Combined LTV: 70% — within most lenders' appetite
Most second charge bridging lenders cap combined LTV at 70-75% of the open market value. Some specialist lenders will stretch to 80% for strong borrowers with a clear exit, but expect to pay a premium. Below 65% combined LTV is the sweet spot for the best rates.
The lower your first charge LTV, the more headroom you have. A property with a 30% LTV first charge gives you significant room for a second charge. A property already at 60% LTV on the first charge leaves very little space before hitting the combined cap.
Typical Rates and Costs
Second charge bridging rates are higher than first charge rates because of the subordinate position. The lender takes more risk, so they charge accordingly. Current market rates sit in these ranges:
| Factor | Second Charge | First Charge |
|---|---|---|
| Monthly Rate | 0.75% – 1.2% | 0.40% – 0.75% |
| Arrangement Fee | 1.5% – 2% | 1% – 2% |
| Typical Term | 3 – 18 months | 3 – 24 months |
| Max LTV | 70 – 75% combined | 75 – 80% |
Interest is typically rolled up — no monthly payments. Everything is repaid when you exit the loan. Use our bridging calculator to model the total cost for your specific numbers.
Legal costs tend to be slightly higher on second charges because two sets of solicitors are involved — yours and the lender's — and they need to review the first charge terms. Budget £2,000-4,000 for legal fees on a typical second charge.
The First Charge Consent Process
Here is the part that catches people out: your existing first charge lender must consent to the second charge being placed behind them. This is not optional — without consent, the second charge cannot be registered.
What to Expect
- Your solicitor writes to the first charge lender requesting consent for a second charge to be registered behind them.
- The first charge lender reviews the request. They check their terms allow it and assess whether it affects their security position.
- Consent is granted (or refused). Most institutional lenders consent routinely. Some charge a fee of £75-250. Private or specialist lenders can be less predictable.
- Timeline: Allow 5-10 working days for consent. Some lenders are faster, some are glacial. Your broker should know which lenders consent quickly.
Some first charge lenders refuse consent as a matter of policy. If your existing lender won't consent, the options are to refinance the first charge entirely or find a lender who will take a different approach to capital raising. We deal with this regularly and can advise on likely consent outcomes before you commit to an application.
What Can You Use the Funds For?
Second charge bridging loans are flexible in terms of purpose. Provided the security property is not your primary residence (which would make it regulated), common uses include:
Deposit on Another Property
Unlock equity from an existing asset to fund the deposit on a new acquisition. Particularly useful for portfolio landlords scaling up.
Refurbishment Works
Fund renovations on the security property or another asset without refinancing the first charge. Ideal when you want to add value before remortgaging at a higher valuation.
Business Capital
Directors raising working capital against investment property. Stock purchases, cashflow gaps, or seizing a time-limited commercial opportunity.
Tax Bills and HMRC
Corporation tax, CGT, SDLT — large tax liabilities with hard deadlines. A second charge bridge buys time to arrange longer-term refinancing or sell an asset in an orderly way.
Second Charge vs Remortgage: Which Is Cheaper?
This is the calculation that matters. A second charge always has a higher rate than a first charge — but rate alone doesn't tell you the total cost. You need to compare the all-in cost of each route.
| Consideration | Second Charge | Full Remortgage |
|---|---|---|
| Interest Rate | Higher (on smaller amount) | Lower (on full amount) |
| ERC on Existing Mortgage | None — mortgage stays | Potentially 3-5% |
| Speed | 5-10 working days | 4-8 weeks |
| Impact on Existing Rate | None | Lost — new rate applies to all |
| Complexity | Moderate (consent required) | Higher (full underwriting) |
The rule of thumb: if the amount you need is less than 30% of the total facility, and your existing rate is competitive or carries an ERC, the second charge usually wins. If you need to raise more than 50% of the existing facility value and your first charge is on a variable or SVR rate, refinancing the whole thing is typically cleaner and cheaper.
We run both scenarios for every client. Talk to us and we'll model the numbers side by side so you can make the decision based on actual costs, not assumptions.
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