Applying for a Second Mortgage

Do you need a second mortgage? Read our guide to find out everything you need to know for your application

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Home Mortgage Application Applying For A Second Mortgage
Pete Mugleston

Author: Pete Mugleston

Mortgage Advisor, MD

Updated: March 13, 2024

Here, we look at applying for a second mortgage and what requirements you may need to meet for a successful application. We also identify how much you can borrow as well as which lenders offer them and where you can look for guidance during the process.

Can you get a second mortgage?

Yes, you can get a second mortgage for another house if you meet lender criteria. They’ll assess if you can afford both mortgages by looking at your income, debt-to-income ratio, and credit history. Significant equity in your first home and a strong financial history enhance your eligibility.

A second mortgage is separate from your first so you would have two different monthly repayments. This means you don’t have to have both mortgages with the same lender (even if the second loan is for your current home).

Second mortgages can be perceived as a higher risk to many lenders. As a result, they will often charge you a higher interest rate, particularly with buy-to-let mortgages – a common second mortgage type. It’s important, therefore, to account for these extra associated costs. An experienced broker would be able to help outline what these could be.

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Scenarios where you can get a second mortgage

Why you want a second mortgage will affect the type of product you can get and how much you can afford.

Common scenarios are:

Second properties

You may want another property because:

  • You already have one with an ex-partner, but don’t want to exit your original mortgage
  • You are buying a holiday/second home

You’ll need a residential mortgage for these purchases with mortgage providers often requiring you to:

  • Be between their age parameters (typically 21-70 years old)
  • Have at least 10% equity, if not more (some lenders may require a minimum of 25-35% for second mortgages)
  • Have no bad credit issues on your record
  • Have a suitable source of income

Lenders will determine how much you can borrow by looking at your income in addition to what your outgoings are. If you want to purchase another property as a holiday home, lenders will usually run an affordability assessment to see whether you can afford the second lot of repayments.

If you have a property with an ex-partner, it is likely your outgoings could be quite high if you are still paying for some of your original mortgage. Be prepared that could lessen how much you can now borrow.

Buy-to-let (BTL)

If you are buying another property to rent out, you’ll require a BTL mortgage.

To be eligible, you need to meet certain criteria:

  • Sufficient rental income to cover the mortgage repayment
  • Lenders can only offer mortgages to those over 21 and often have an upper limit of 70, though some may go higher
  • A good credit score

Most lenders will expect you to already be a homeowner before they approve you for a buy-to-let property, though this is a moot point if your BTL loan is a second mortgage.

You’ll also often need to pass affordability tests. With BTL mortgages, that will usually mean looking at rental income to see whether it more than covers the mortgage repayments. Mortgage providers won’t usually look at your personal income, though some may consider it if you want to increase your loan amount.

Second charge mortgage

If you simply want to access some of the equity in your property, you can take out a second charge mortgage. Both your original mortgage and second charge mortgage are secured against the property and don’t have to be with the same lender. If you do not meet your repayments, your lenders can then sell the property to repay the debt. When this occurs, the original mortgage is repaid first.

The more equity you have the more you can borrow. A second charge lender will then determine your affordability based on your income levels as well as checking your credit rating and age.

How to get a second mortgage

Your first step should be to find a specialist mortgage broker with experience in this area as this will boost your chances of getting approved at the best terms available.

Using our free broker-matching service you can speak straight away to the right broker by simply making an enquiry online. They’ll be able to help with:

  • Readying all the necessary paperwork. If you’re applying for a second mortgage you’ll need to provide evidence – in the form of payslips or certified accounts (if you’re self-employed) and bank statements – that you can comfortably afford two monthly mortgage repayments.  
  • Downloading and optimising your credit reports. You can start your free trial by clicking on the link and reviewing your credit records straight away. Removing any inaccurate or outdated information will avoid any unnecessary rejections by a lender. 
  • Finding the right lender and securing the best deal for you. An experienced broker can quickly identify lenders who will look more favourably on applications for second mortgages. 

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How much can you borrow if you already have a mortgage?

Maximum amounts depend on the type of mortgage you need and your lender’s specific criteria.

However, to give an idea:

Residential mortgage amount:

Loan amounts for this type of mortgage depend on the amount of equity built up in your first property, any separate deposit and income. Lenders usually cap mortgage amounts at 70-80% loan-to-value. Many providers will lend at 4-4.5 times your salary, but some may go to 5 times, if not higher in very rare instances.

Mortgage Affordability Calculator

Use this calculator to determine how much you could potentially borrow for a mortgage, based on the typical salary multiples used by most UK lenders.

Input full salaries for all applicants

Your Results:

You could borrow up to 

Most lenders would consider letting you borrow

This is based on 4.5 times your household income, the standard calculation used by the majority of mortgage providers. To borrow more than this, you will need to use a mortgage broker to access specialist lenders.

Some lenders would consider letting you borrow

This is based on 5 times your household income, a salary multiple you might struggle to qualify for without the help of a broker. This income multiple is not widely available to customers who are applying directly with a lender.

A minority of lenders would consider letting you borrow

This is based on 6 times your household income, a salary multiple you will struggle to get without a broker. Six-times salary mortgages are usually only available under very specific circumstances.

Get Started with an expert broker to find out exactly how much you could borrow.

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Buy-to-let mortgage amount:

There’s no strict limit on the maximum amount you can borrow, but mortgage providers will want to ensure that your rental income is at least 125% of your monthly interest payments. It could be more depending on the provider, but it can vary hugely. For providers who require 125%, an example would be: if your mortgage interest payments are £1,000 per month, your rental income would need to be at least £1,250 a month.

Buy-to-Let Mortgage Calculator

Our buy-to-let mortgage calculator can show you how much your mortgage could cost you each month and overall. Simply enter the rental property value, deposit, anticipated monthly rent, interest rate, mortgage term and our calculator will do the rest.

Enter the value of the rental property here
A deposit of at least 20% is usually required for a buy-to-let mortgage
Most lenders will require a deposit of at least 20%
Deposit must be less than the property value
Enter the anticipated monthly rent here
Enter the mortgage rate, 5.5% is a typical rate currently but this can vary
Enter the mortgage term, 25 years is the average but lenders can offer shorter and longer terms

Loan to Value ratio (LTV):

Most lenders won't offer buy-to-let mortgages over a LTV of 80%.

Interest Cover Ratio (ICR):

Most lenders require rental income to be at least 125%-145% of the interest repayments for a buy-to-let mortgage.

Get started with a specialist buy-to-let broker to find out how much they could help you save on your monthly mortgage repayments.

Second charge mortgage amount:

These loans depend on the equity built up in your home. If you have a house worth £300,000 and you have £200,000 left on your original mortgage, you have £100,000 equity from which a lender will allow you to borrow against.

The exact additional amount you can borrow will depend on the lender and their criteria. It’s unlikely you would be able to borrow 100% of that amount but there may be a few specialist lenders who could potentially do this.

Which lenders consider second mortgage applications?

Here are a few potential lenders for each of the common scenarios requiring a second mortgage – however, these are subject to change.

  • Second properties: Leek United Building Society, Progressive Building Society, Beverley Building Society
  • Buy-to-let: Penrith Building Society, Leeds Building Society, Keystone
  • Second charge mortgage: These mortgages typically require specialist lenders for which you’d need a broker. Some lenders, such as NatWest and Santander will only lend to existing mortgage customers. However, the fintech sector is broadening the market with some lenders such as Paper Money or Revolut becoming potential second charge mortgage lenders.

When is it not a good idea to get a second mortgage?

The only time when you’d really need a completely new and separate mortgage is when you’re purchasing a second property. 

In all other circumstances – particularly if you want to extend the borrowing on your existing home – there are other alternatives that should be considered first, such as either a remortgage (if your existing deal has ended) or a second charge mortgage. 

Also, if the amount you need to borrow is quite small (below £25,000) then you can consider arranging a personal loan which can be paid off sooner. This avoids the risk of paying back more interest over a longer period of time. 

Speak to a broker experienced in second mortgages

Getting the right product for your second mortgage ensures that the mortgage is affordable to you as well as for the amount you need. Yet, finding that product is a tough call on your own given the wealth of options available. It’s also crucial only to apply for a mortgage for which you are eligible. If you don’t, your application will almost certainly be rejected which can impact your credit rating.

A broker can help ensure that that does not happen. They’ll improve your chances of only ever applying successfully for a second mortgage, as well as ensuring that the mortgage is appropriate for you.

Our free, no-obligation broker matching service can put you in touch with a specialist second mortgage expert. Call us on 0808 189 2301 or enquire with us so we can connect you.

Maximise your chance of mortgage approval with a specialist in second mortgages

Get Started Phone Icon 0808 189 2301


Yes, you can but it’s inadvisable to do so as it will likely act as a big red flag to lenders. They could view the dual application negatively as several loan applications in a short space of time can suggest you’re anticipating problems.

There is no one answer to this, but typically you should work on around 6-8 weeks. The best thing you can do is to ensure all your paperwork is ready and only apply for mortgages for which you are eligible.

Providers may run slightly more in-depth affordability checks for second mortgages, but that should not be the reason to hold up a property purchase. Instead, hold-ups may come later with property checks or problems of being in a chain.

For a second, additional property, one big cost you may have to account for is the extra Stamp Duty charged which attracts a higher rate. An extra 3% is currently added to your Stamp Duty bill in England.

In Scotland, you have to pay the Additional Dwelling Supplement (ADS) which is a one-off 4% tax on properties over £40,000. In Wales, a similar 4% Land Transaction Tax is charged in addition to the standard rate for properties over £40,000 too.

Stamp Duty won’t be charged if you are taking another mortgage out on a home you already own.

This really depends on the lender but a typical deposit for a second mortgage would be at least 15%-20%. In some cases, it could be higher depending on the circumstances surrounding the purchase. 

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About the author

Pete, an expert in all things mortgages, cut his teeth right in the middle of the credit crunch. With plenty of people needing help and few mortgage providers lending, Pete found great success in going the extra mile to find mortgages for people whom many others considered lost causes. The experience he gained, coupled with his love of helping people reach their goals, led him to establish Online Mortgage Advisor, with one clear vision – to help as many customers as possible get the right advice, regardless of need or background.

Pete’s presence in the industry as the ‘go-to’ for specialist finance continues to grow, and he is regularly cited in and writes for both local and national press, as well as trade publications, with a regular column in Mortgage Introducer and being the exclusive mortgage expert for LOVEMoney. Pete also writes for Online Mortgage Advisor of course!

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Pete Mugleston

Mortgage Advisor, MD

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