Before we answer the question, it’s probably worth defining the meaning of ‘porting a mortgage’. Basically, if you already have a mortgage and you want to move house you can either pay off your old mortgage and take out a new loan on the next property (if you need to) or you might be able to take your old mortgage with you to the new property. This is called porting your mortgage.
There are several reasons why porting your existing mortgage loan might be advantageous, especially if you currently benefit from beneficial loan terms. However, just because you might be able to port the loan in principle, there are various reasons why it may not work in practice.
The main issues revolving around mortgage porting relate to changes in circumstances. In other words, either the circumstances of the borrower have changed (e.g. changed job, become self-employed, changes in household income or expenditure) or changes to the lender’s loan criteria (e.g. maximum lending ratio to income, loan to value ratios, etc).
It is well worth doing some maths to establish whether porting your existing loan is attractive anyway. For example, are there better mortgage offers out there? Alternatively, are there any penalties for terminating your existing mortgage early and have you allowed for those costs and any new arrangement fees, etc that might be incurred by you if you settle your existing loan and take out another?
Sometimes, it might be worth porting your existing mortgage and taking an additional mortgage too. This is most likely to be with the same lender as part of a package, although, in principle, having two mortgages on one property is perfectly feasible. Of course, both parties must be aware of the arrangement and it is likely that one of the lenders (the one with the riskiest security) will be charging more for their loan to reflect additional risk.
In conclusion then, whilst porting an existing mortgage can be relatively straightforward in principle, it is critical that you calculate which option is better for you before making a decision. Furthermore, don’t commit to any contractual liabilities until you are sure you have a formal offer in place that suits your needs.
Contact us for further advice on mortgage porting and the pitfalls and benefits to each alternative.
2 days ago
Here are the lowest fixed mortgage rates of the week, available to first-time buyers, home movers, buy-to-let, and those remortgaging.
Call us for more information: 01628 507477 or email: team@mortgagerequired.com.
Nationwide is the first lender to allow mortgage deeds to be signed electronically and without the need for a witness.
‘My First Mortgage’ from major high-street lender Santander is specifically for those wanting to buy their first property. It allows first-time buyers to purchase 98% of the property’s value. However, certain criteria must be met to be eligible.
Maidenhead, Berkshire – 26th January 2026 – Dedicated independent mortgage experts, Mortgage Required, are delighted to have acquired fellow experienced brokerage, Y-Not Finance.
The acquisition connects two well-respected brokerages, both with a wealth of experience and shared values, to continue providing the best advice on all aspects of the mortgage market.
As part of the UK government’s plans to change the leasehold system to help families struggling with unaffordable ground rent costs.
The Prime Minister announced this morning (27 January) that ground rents will be capped at £250 per year, reverting to a peppercorn rate after 40 years.
Additional borrowing, also known as a further advance, is when you borrow more money on your existing mortgage for a specific reason agreed with your lender.
Here are five of the most common reasons for additional borrowing.
30 Dec 2025
Property search site Zoopla has estimated that the UK housing market will end 2025 with approximately 1.15 million completed sales – 4.5% more than the previous year.
Take a look at the 2025 summary of the UK housing market.
29 Dec 2025
If buying your first property, or moving home, is on your to-do list this year, the new year can be a great time to take this big step. In this short blog, we look at what you need to consider as you plan and prepare for your home-buying journey.