Can You Keep Your Mortgage When You Move?

You have found a new home, accepted an offer on your current one, and then the question lands – can you keep your mortgage when you move? The short answer is sometimes, but only if your lender allows it and you still meet their criteria. In practice, moving home often means applying again, even if you stay with the same lender.

That catches plenty of people out. Many homeowners assume their mortgage simply follows them to the next property. Sometimes it can. Sometimes it cannot. And sometimes it can, but only with extra borrowing, a new affordability check, or changes to the rate and terms.

Can you keep your mortgage when you move, or not?

In the UK, the usual route is called porting your mortgage. This means transferring your existing mortgage deal from your current property to the new one. It does not mean the lender automatically says yes, and it does not mean you can skip the underwriting process.

A portable mortgage can be useful if you are on a competitive fixed rate and do not want to pay an early repayment charge. But portability is a feature of the product, not a guarantee of approval. Your lender will still want to review your income, outgoings, credit profile, property details and loan size before agreeing to the move.

If your circumstances have changed since you first took out the mortgage, that matters. A new job, lower overtime, childcare costs, credit commitments or even the type of property you are buying can affect the outcome. So although the mortgage deal may be portable, your application still has to stand up today.

What porting a mortgage actually means

Porting is often misunderstood because the word sounds simpler than the process really is. You are not physically moving the same loan untouched from one house to another. You are usually redeeming the old mortgage when your current property sale completes and taking a new mortgage with the same lender on the new property, while keeping the benefit of your existing rate or product terms where allowed.

If you need to borrow the same amount, the process may be fairly straightforward. If you need to borrow more because the new home costs more, the extra borrowing is often placed on a separate product. That means part of your mortgage could stay on your current rate, while the additional amount sits on a different rate and perhaps a different product term.

That can make monthly budgeting less tidy than people expect. It is manageable, but it is worth understanding before you commit.

When porting tends to work well

Porting can be a strong option if your current mortgage deal is competitive, your finances are stable and the new property fits the lender’s criteria. It can also help if you are mid-fix and want to avoid a sizeable early repayment charge.

For example, if you are moving from one standard residential house to another and your income and credit position are broadly unchanged, a lender may be happy to approve the move. In that case, keeping the existing deal could save you money compared with redeeming it and starting again elsewhere.

When it becomes more complicated

Things can become trickier if you are upsizing significantly, moving to a non-standard construction property, becoming self-employed, or if your affordability has tightened since you first borrowed. The same applies if the chain is awkward and the sale and purchase do not complete on the same day.

Timing matters more than many borrowers realise. Some lenders want the sale and purchase to happen simultaneously for the port to work cleanly. If there is a gap, you may need a different approach.

What lenders look at before they agree

Even when your mortgage is portable, the lender is not simply checking a box. They are reassessing the application. That usually includes your income, regular expenditure, credit history, deposit or equity position, and the property itself.

Affordability is often the biggest issue. You may have managed your current mortgage perfectly for years, but that does not automatically mean the lender will approve the next loan. Their current criteria may be stricter than they were when you first applied, and interest rate stress testing may affect how much they are willing to lend.

The new property’s valuation is also important. If the lender thinks the home is worth less than the agreed purchase price, or if it is a type of property they are cautious about, that can change the result. Flats, ex-local authority homes, listed buildings and properties with unusual construction can all need closer review.

If you need to borrow more

This is where many home movers need careful advice. If the new property costs more than your current one, you may need a top-up loan from the same lender. The lender might offer that additional borrowing on one of their current products rather than matching the rate on your existing mortgage.

So you could end up with two parts to the mortgage – one on your old fixed rate and one on a new rate. That is not necessarily a problem, but it does affect your monthly payments and the dates when each part ends. If one part comes off its fixed rate sooner than the other, your remortgage planning later can become a bit more involved.

There is also the question of whether staying with the same lender is still the best value overall. Avoiding an early repayment charge sounds appealing, but if the lender’s top-up rate is uncompetitive, or their affordability is tight, a full remortgage elsewhere could still work out better. This is where comparing the true overall cost matters, not just one fee or one headline rate.

If you are moving to a cheaper property

Porting can still apply if you are downsizing, but the numbers change. If your mortgage balance is larger than you need for the next home, you may have to repay part of the loan. Depending on your lender and your product terms, that partial repayment could trigger an early repayment charge on the amount not being ported.

Some products allow a degree of overpayment each year without penalty, which can help. Others are more restrictive. It is worth checking the exact terms rather than assuming a smaller mortgage automatically means a simpler move.

Alternatives if you cannot keep your mortgage

If your current lender says no, that does not always mean your move falls apart. It may simply mean you need a new mortgage elsewhere. In some cases, switching lender gives you more flexibility, a better borrowing amount or a product that suits the new property more comfortably.

You may, however, face an early repayment charge if you leave your current deal before it ends. That charge can be frustrating, but it should be weighed against the bigger picture. A better rate, more suitable terms or a successful purchase may still justify the cost.

For some borrowers, especially those with changed employment, variable income or more complex circumstances, a fresh look at the wider market can open up options their current lender will not offer. That is often where tailored advice makes the biggest difference.

Questions to ask before you move

Before making assumptions, ask whether your mortgage is portable, whether your lender will reassess affordability, and what happens if you need extra borrowing. Ask about early repayment charges, valuation fees, product fees and whether your sale and purchase need to complete at the same time.

It is also sensible to ask what your monthly payments would look like if the borrowing is split across two products. Knowing that upfront can make the move feel much more manageable.

Why early planning matters

The best time to look at this is before you commit to the next property, not after. A quick review of your current mortgage terms and borrowing capacity can save a lot of stress later. It also helps you understand your budget properly, rather than relying on what you think your lender might allow.

At Galloway Jennings, this is often where a conversation brings real clarity. A home move can look straightforward on the surface, but the mortgage side has plenty of moving parts. Getting clear advice early can help you avoid delays, surprise costs and last-minute changes.

Moving home is exciting, but your mortgage should be the part that feels calmer, not more confusing. If you are wondering whether you can keep your mortgage when you move, the answer usually depends on your lender, your finances and the property you are buying – so it is well worth checking before the removals are booked.