What happens to your mortgage when you move house? A real-life home mover case study
Overview: why using an independent mortgage broker changes everything
If you are thinking about moving home and wondering what happens to your existing mortgage, getting the right mortgage porting advice early could save you thousands of pounds and significant stress — something even Money Helper acknowledges when advising home movers to seek specialist mortgage guidance before making any decisions. This is the real story of one of our long-standing clients, and how our team at Orchard Mortgage Solutions supported them from remortgage through to moving day — including when things got complicated
The background: remortgage advice that looked ahead
Twelve months ago, this client came to us for a remortgage. During our initial conversations, they mentioned they might be thinking about moving home within the next three years. For many lenders and advisers, that detail would have been noted and forgotten. For us, it shaped everything.
We took the time to walk them through all their options — fixed rate mortgages, tracker mortgages — and, crucially, we explained how mortgage porting works. Understanding porting at the remortgage stage meant that when the time came to move, our client was already equipped to make an informed decision rather than starting from scratch under pressure.
Related: Should I port my mortgage or get a new one? What home movers need to know
Two months ago: turning plans into action
Our client found their dream home and had an offer accepted. They came back to us — not because they had to, but because they trusted us. As their mortgage broker for home movers, we reviewed their full financial picture and laid out every option clearly: take out a new mortgage, or port the existing deal across to the new property.
We modelled the costs, compared the rates, and factored in all fees and early repayment charges. Every option was laid out clearly so our client could make a confident, informed decision. They chose to port their existing mortgage — and we got to work.
How does mortgage porting work? Advice from a real case study
One of the most common questions we hear is: “How does mortgage porting work?” In theory, porting means transferring your existing mortgage deal — including the interest rate — to a new property. In practice, lender systems don’t always make this easy. Processing times can drag, paperwork can stall, and without an experienced broker managing the process, deals can miss critical deadlines.
We handled everything on our client’s behalf. Despite the complexity of the lender’s internal systems, we secured a full mortgage offer in just 10 days — keeping the transaction firmly on track.
Why expert mortgage porting advice matters when chains get complicated
Five days before exchange of contracts, a first-time buyer at the bottom of the chain received a Home Buyers Report raising concerns about their purchase. Their response was to demand a £15,000 reduction in the asking price — and to threaten to walk away if refused. That single demand rippled up through every buyer and seller in the chain, forcing a full renegotiation.
This is exactly the kind of situation where having a knowledgeable independent mortgage broker proves its worth. Our clients contacted us immediately. We understood exactly what was needed: an updated mortgage offer reflecting the revised purchase price. We went directly to the lender, managed the request, and had a new offer confirmed and returned within 48 hours — preventing the chain from breaking and keeping exchange on schedule.
Protecting our client from paying early repayment charges they didn’t owe
As completion approached, the solicitor raised concerns about early repayment charges — a completely understandable source of confusion when a mortgage is being ported rather than closed.
Many people — and indeed many solicitors — assume that moving home triggers a full ERC. In reality, when you port your mortgage, the position is more nuanced. Because the original loan is being carried across to the new property, only a restricted early repayment charge applies — and only on any additional borrowing above the ported amount, not on the full balance.
We explained this clearly to the solicitor, providing the information needed to proceed with confidence. The information was passed on promptly, and our client avoided paying thousands of pounds in charges that were never actually due. That single conversation made a significant difference to the outcome.
The result: a happy client and a completed purchase
“From the moment we first started thinking about moving, right through to the day we got the keys, Orchard Mortgage Solutions were with us every step of the way. When things got difficult, they just sorted it.”
Our client completed their purchase with their ported mortgage in place, no unnecessary costs incurred, and full confidence that every decision they made along the way was the right one.
Why an independent mortgage broker matters at every stage
This case study illustrates something we see time and again: the real value of a mortgage broker isn’t just finding a good rate. It’s the expertise, the continuity, and the ability to think ahead. We understood the importance of porting before the move was even on the horizon. We acted fast when the chain was under threat. We protected our client from a costly misunderstanding about early repayment charges.
That is what Orchard Mortgage Solutions does — for every client, at every stage of the process.
Frequently asked questions about mortgage porting
What happens to my mortgage when I move house?
You have two options: take out a new mortgage on the new property, or port your existing mortgage across. Porting can save money if you’re on a competitive rate, but it’s important to compare all costs — including any early repayment charges and the fees involved in a new deal. A broker can model both options for you.
Do I pay early repayment charges when I port my mortgage?
Not on the ported amount. When you port a mortgage, the existing balance transfers to the new property and the ERC does not apply to it. If you need to borrow additional funds above your current balance, a restricted ERC may apply to that extra amount only. This is frequently misunderstood — always seek advice from a qualified mortgage broker.
How long does it take to port a mortgage?
It varies by lender, but with an experienced broker managing the process, it can be achieved quickly. In this case, we secured a full mortgage offer in 10 days. Having a broker who knows how to navigate lender systems is essential to keeping timelines on track.
What happens to my mortgage offer if the purchase price changes?
If the agreed price changes — for example, due to a chain renegotiation — you will need an updated mortgage offer letter. Your broker can request this from the lender. In this case, we had an updated offer confirmed within 48 hours of the chain renegotiation.
Should I use a mortgage broker when moving home?
Yes. A broker adds significant value at every stage of the process — from comparing porting versus new mortgage options, to managing lender timelines, to resolving issues that arise unexpectedly. Buying and selling at the same time is complex, and having expert support throughout reduces both risk and cost.
Ready to talk about your options? Whether you’re thinking about moving, remortgaging, or want to understand what happens to your mortgage when you move house, our team at Orchard Mortgage Solutions is here to help. Get in touch today for independent mortgage advice with no obligation.
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