Moving home can feel exciting, but your mortgage can quickly make things complicated. If you already have a good deal, the last thing you want is to lose it, which is where mortgage porting comes in.
In simple terms, mortgage porting allows you to take your current mortgage deal with you to a new property, keeping the same interest rate and terms, even though you are moving house. With UK mortgage rates rising in recent years, this can save you a lot of money over time.
Recent data from market‑rate surveys and lender‑product trackers show that average mortgage rates in the UK are higher than they were in the previous decade, with many fixed‑rate deals now above 5%. This means keeping an older, lower-rate deal could be a big advantage.
In this guide, you’ll learn how mortgage porting works, when it makes sense, and how to avoid common mistakes so your move stays smooth and cost-effective.
With Lodestone, you get clear, independent mortgage advice with access to a wide range of lenders. Based in London, the team guides you through every step with simple, straightforward support tailored to your situation. Whether your move is simple or more complex, you are supported from start to finish.
What Is Mortgage Porting and How Does It Work?
When you port your mortgage, you are not moving the loan itself. Instead, your lender agrees to give you a new mortgage on your new home, using the same terms as your current deal.
This means you still need to apply again. Your lender will check your income, credit score, and the value of the new property. If anything has changed, this could affect your approval.
If your new home costs more than your current one, you may need to borrow extra. This is often done as a second loan with a different interest rate, and if your new home costs less, you might have to repay part of your mortgage early, which could include fees.
To make your move easier, below we have listed our top 8 tips for porting your mortgage.
Tip 1: Check If Your Mortgage Is Portable
Not all mortgages can be ported. Many can, but you need to check your agreement or speak to your lender.
Even if your deal is portable, it does not mean approval is guaranteed. You still need to meet the lender’s criteria at the time you move.
This is why it’s important to start planning early. You don’t want to assume you can port your mortgage, only to find out too late that you cannot.
Tip 2: Know That You Still Need Approval
A common mistake is thinking porting is automatic, when it is not.
Your lender will treat this like a new application. They will look at your income, job stability, and spending. If your situation has changed, this could affect your chances. For example, if you have become self-employed or taken on new debt, your lender may be more cautious.
This step is key. It ensures the mortgage is still affordable for you, but it can also slow things down if you are unprepared.
Tip 3: Understand the Costs Involved
Porting a mortgage is not always free.
You may still need to pay valuation fees, legal costs, and arrangement fees. If you repay part of your mortgage early, you could also face an early repayment charge.
The average cost of moving home in the UK can run into several thousand pounds once you include all fees. Mortgage-related costs are a big part of this. Make sure you factor these into your budget so there are no shocks later.
Tip 4: Get Your Timing Right
Timing is one of the most important parts of mortgage porting. Ideally, your sale and purchase should complete at the same time. This allows the mortgage to transfer smoothly from one property to the next.
If there is a gap between selling and buying, things can become more complex. You may need a temporary mortgage or risk losing your current deal. Planning ahead and keeping all parties aligned helps avoid delays.
Tip 5: Be Ready If You Need to Borrow More
If you are moving to a more expensive property, you will likely need extra borrowing. This additional amount may not be on the same rate as your existing mortgage. It could be higher, especially in today’s market.
This creates a split mortgage, where part of your loan is on your old rate and part is on a new one. Over time, this can affect your monthly payments more than you expect.
Tip 6: Think About Whether Porting Is Right for You
Porting may sound like the best option, but it is not always the right one. If your current deal is not very competitive, switching to a new lender could save you more money. Even with fees, a better rate might reduce your monthly payments.
An improved rate could save you money over time, so explore Lodestone’s remortgage service before you commit.
Tip 7: Watch Out for Common Pitfalls
There are a few common issues that can cause problems during the process. Delays in your property chain can affect your timing, changes in your financial situation can impact approval, and underestimating costs can stretch your budget.
Many people also forget that lenders can refuse porting, even if the mortgage is technically portable. Being aware of these risks helps you stay in control of your move.
Tip 8: Use a Mortgage Broker for Expert Support
This is where a mortgage broker can make a real difference.
A broker can check if your current lender is likely to approve porting. They can also compare other deals to see if switching might be better.
Working with a broker like Lodestone gives you access to a wider range of lenders. This increases your chances of finding a deal that fits your situation. Instead of guessing, you get clear advice based on your circumstances.
Looking beyond one lender can open better options, and Lodestone’s independent mortgage broker service helps you compare widely.
Make Your Move Work for You with Lodestone
Porting your mortgage can be a great way to protect a good deal, especially in a higher-rate market. But it is not always simple, and it is not always the best option.
By properly checking your eligibility and planning ahead, you put yourself in a stronger position. You avoid costly mistakes and keep your move on track.
If you want clarity before you commit, speaking to a mortgage broker can help you see all your options clearly. With Lodestone, you get clear guidance and access to lenders suited to your situation. Contact us today to get started.
This article is for general information only and does not constitute financial or mortgage advice. While all sources have been carefully verified, you should consult an advisor before making any financial decisions based on the content.
Read more:
Fixed-Rate vs Variable-Rate Mortgages – Which Should You Choose?
How to Choose the Right Independent Mortgage Broker for Your Needs
Understanding Stamp Duty and Other Hidden Costs in the UK Home-Buying Process
