Second Charge Mortgages Explained
Updated 12 April 2026
Second Charge mortgages are by referral only
This guide explains what a second charge mortgage is, how it works alongside your existing mortgage, when it may be relevant and what alternatives may be worth considering first. A second charge mortgage is a complex financial product and is not suitable for everyone. This page is provided for information only.
Your home may be repossessed if you do not keep up repayments on a mortgage or any other debt secured on it.
For a free initial consultation about your borrowing options, call 01202 155992 or contact Mortgage One.
What Is a Second Charge Mortgage
A second charge mortgage, also known as a secured loan or homeowner loan, is an additional loan secured against your property that sits alongside your existing first charge mortgage. Your first charge mortgage remains in place and unaffected. The second charge lender takes a secondary position behind your first mortgage lender, meaning that if the property were repossessed and sold, the first charge lender would be repaid first.
Second charge mortgages are regulated by the Financial Conduct Authority in the same way as first charge mortgages. The lender must carry out affordability checks, and you have the same consumer protections including a reflection period before the loan is finalised.
When a Second Charge Mortgage May Be Considered
A second charge mortgage may be worth exploring in specific circumstances where remortgaging or a further advance from your existing lender would be disadvantageous or unavailable. Common scenarios include:
• You are on a competitive fixed rate with your existing lender and remortgaging would trigger early repayment charges that outweigh the benefit of consolidating the borrowing.
• Your existing mortgage has a favourable rate that would be lost if you remortgaged the full balance to a new lender.
• You need to raise capital for a specific purpose such as home improvements, business investment or debt consolidation, and your existing lender does not offer a further advance or the terms are unfavourable.
• Your credit circumstances have changed since you took out your first mortgage, making a full remortgage more expensive or harder to arrange, but you have sufficient equity to support additional secured borrowing.
In each case, it is important to compare the total cost of a second charge mortgage against the alternatives before proceeding. Mortgage One’s remortgaging guide explains how a remortgage with capital raising works and when it may be more cost-effective than a second charge.
How Loan-to-Value Works With a Second Charge
The loan-to-value calculation for a second charge mortgage combines your existing first charge mortgage balance with the new borrowing, assessed against the current property value. For example, if your property is valued at £300,000 and your outstanding first mortgage is £120,000, you have £180,000 of equity. If the second charge lender offers a maximum combined LTV of 75 per cent, the total borrowing across both charges could be up to £225,000, leaving £105,000 available through the second charge.
Maximum combined LTV varies by lender, typically ranging from 70 to 85 per cent. Higher LTV borrowing may carry higher rates and stricter affordability requirements. A property valuation will usually be required.
How a Second Charge Is Registered
Before a second charge can be placed on the property, your first charge mortgage lender must provide consent. This is because your first lender holds priority over the property and needs to agree to another lender taking a secondary position. Most first charge lenders will grant consent, but some may have conditions.
A new property valuation may be required by the second charge lender to confirm the current market value and the equity available. The second charge is registered at HM Land Registry alongside the first charge.
Interest Rates and Costs
Interest rates on second charge mortgages are generally higher than first charge mortgage rates. This reflects the additional risk for the second charge lender, who sits behind the first charge lender in the repayment hierarchy. The rate offered will depend on the combined LTV, your credit profile, income and the purpose of the borrowing.
In addition to interest, there may be arrangement fees, valuation fees and legal costs associated with setting up a second charge mortgage. These should be factored into the total cost comparison when assessing whether a second charge or an alternative route is more appropriate.
To discuss whether a second charge mortgage or an alternative route may be more appropriate for your circumstances, call 01202 155992 or contact Mortgage One.
Remortgaging With a Second Charge in Place
If you have a second charge mortgage and later want to remortgage your first charge, this adds complexity. The new first charge lender will need to be made aware of the second charge and may require it to be cleared from the proceeds or subordinated, meaning the second charge lender agrees to remain in second position behind the new first charge lender.
Not all lenders will accept a second charge remaining in place on a remortgage. A broker can identify which lenders are willing to work alongside an existing second charge and ensure the remortgage application is structured correctly.
Alternatives to a Second Charge Mortgage
Before committing to a second charge mortgage, it is worth considering alternatives that may be simpler or more cost-effective:
• Remortgaging with capital raising allows you to consolidate your existing mortgage and additional borrowing into a single new mortgage. This is often the most straightforward option if your current deal has no early repayment charges or if the charges are modest relative to the savings. Mortgage One’s remortgaging guide explains the process.
• A further advance is additional borrowing from your existing first charge lender, added to your current mortgage. This avoids the complexity of a second charge and keeps everything with one lender, though the rate on the further advance may differ from your existing product.
• An unsecured personal loan may be suitable for smaller amounts, typically up to £25,000 to £50,000 depending on the lender. Unsecured loans do not put your property at risk and are faster to arrange, but rates may be higher for larger amounts.
• Bridging finance may be appropriate for short-term capital requirements where the borrowing will be repaid within a defined period. Mortgage One’s bridging loans guide explains how short-term secured lending works.
How Mortgage One Can Help
Mortgage One does not advise on or arrange second charge mortgages directly. However, as a whole of market mortgage broker, Mortgage One can assess whether a remortgage with capital raising, a further advance or another route may achieve the same objective without needing a second charge. If a second charge mortgage does appear to be the most appropriate option after exploring the alternatives, Mortgage One can refer you to a trusted third-party provider who specialises in second charge lending.
Mortgage One’s mortgage application guide covers the documentation and process involved in applying for a mortgage.
For a free initial consultation about your borrowing options, call 01202 155992 or contact Mortgage One.
The information provided in this article is for general guidance only and does not constitute personal or regulated financial advice. If you’d like to understand what these moves could mean for you, speak to Mortgage One. We can explain your options and timings based on your specific circumstances.
Some Buy to Let mortgages are not regulated by the Financial Conduct Authority.
FAQs
1. What is a second charge mortgage?
A second charge mortgage is an additional loan secured against your property that sits alongside your existing first charge mortgage. It is also known as a secured loan or homeowner loan. Your first mortgage remains in place and unaffected.
2. Does Mortgage One arrange second charge mortgages?
No. Mortgage One does not advise on or arrange second charge mortgages. Where appropriate, Mortgage One can refer you to a trusted third-party provider who specialises in second charge lending.
3. When might a second charge mortgage be considered?
A second charge may be relevant when remortgaging would trigger early repayment charges, your existing rate is competitive and would be lost, your existing lender does not offer a further advance, or your credit circumstances have changed since your first mortgage.
4. How much can I borrow with a second charge mortgage?
The maximum depends on the equity in your property and the lender’s combined LTV limit, which typically ranges from 70 to 85 per cent. The combined first and second charge borrowing cannot exceed this limit.
5. Are interest rates higher on a second charge mortgage?
Generally, yes. Second charge mortgage rates are typically higher than first charge rates because the lender sits behind the first charge lender in the repayment hierarchy, which increases their risk.
6. Do I need my first lender’s consent?
Yes. Your first charge mortgage lender must provide consent before a second charge can be placed on the property. Most lenders will grant consent, but some may have conditions.
7. What are the alternatives to a second charge mortgage?
Alternatives include remortgaging with capital raising, a further advance from your existing lender, an unsecured personal loan for smaller amounts, or bridging finance for short-term requirements.
8. Can I remortgage if I have a second charge in place?
Yes, but it adds complexity. The new first charge lender will need to be aware of the second charge and may require it to be cleared or subordinated. Not all lenders accept an existing second charge.