Homeowners and Moving Home Mortgages

Moving Home Mortgages

Moving home usually comes down to three key questions: can you port your current deal, do you need to borrow more, and will a lender accept the case on today’s criteria? This page explains the main routes, the costs worth planning for, and the documents lenders often ask for, so you can make decisions earlier and reduce the risk of surprises later.

Your home may be repossessed if you do not keep up repayments on a mortgage or any other debt secured on it.

Who Moving Home Mortgages Are For

This page is for homeowners who are upsizing, downsizing, relocating for work, moving school catchment, separating households, or simply looking for a property that better suits their next stage of life. It is also relevant if you already have a mortgage and want to understand whether keeping your current deal is realistic or whether replacing it may be the cleaner option.

Moving home cases are rarely just about the new property. Lenders will usually look at your sale, your onward purchase, your existing mortgage terms, your equity position, your income, and the new property itself. If you plan to keep your current home as a let or second property rather than sell it, that can move the case into a different category with different lender criteria and possible tax implications. Mortgage advice and legal or tax advice are separate, so you should speak to a qualified solicitor or accountant where needed.

Your Main Options When You Move

There are three main routes when moving home.

• Port your existing mortgage product. Porting usually means taking your current mortgage deal to the new property, subject to the lender agreeing the move, the property meeting criteria and the application still passing affordability and credit checks.

• Port and borrow more. If the new home costs more, you may be able to port the existing balance and apply for additional borrowing. The extra borrowing is often on a different product, rate or term.

• Redeem the current mortgage and take a new one. This can be worth considering if your current product is not portable, the top-up rate is not attractive, or another lender is a better fit for the full borrowing requirement.

Porting sounds simple, but it is not automatic. The lender will normally reassess the case as if it were a new application, and the new property must still be acceptable security. Timing rules can also matter. Some lenders want the sale and purchase to line up closely, and if they do not, the existing deal may not transfer in the way you hoped.

A new mortgage can sometimes be the more practical route, especially where the loan size, term, repayment method or property type is changing. For example, you may want to shorten the term, switch from interest-only to capital repayment, or use a part-and-part structure if lender criteria allow it. If you are weighing up replacing the current mortgage rather than porting it, see our Remortgaging Guide.

How Lenders Assess The Case

Lenders do not only ask whether you have paid your current mortgage on time. They also look at whether the new mortgage is affordable under current policy. That means income, committed outgoings, unsecured credit, childcare, school fees, maintenance, household expenditure and the impact of the proposed monthly payment can all matter.

Key areas lenders often review include:

• employed income, and whether bonus, commission or overtime can be used

• self-employed income, usually supported by SA302s, tax year overviews and sometimes accounts

• existing credit commitments and conduct on bank statements

• loan-to-value, based on the sale price of your current home and the purchase price of the next one

• the property itself, including construction type, flat versus house, lease length and any restrictions

• whether the mortgage is capital repayment, interest-only or part-and-part

• any early repayment charges on the current mortgage

• the overall timing and strength of the chain

This is why a quick online estimate is not the same as a lender-backed assessment. A decision in principle can be useful before you offer, but it is not a guarantee of a mortgage offer. Full underwriting, document checks and valuation still come later. If you want a deeper explanation of how affordability is assessed, see Mortgage Affordablity.

Costs And Timing To Plan For

Before you commit to a purchase, it helps to budget for more than just the deposit difference and monthly payment. Moving home can involve early repayment charges, arrangement fees, valuation costs, legal fees, removals, surveys and, where relevant, Stamp Duty Land Tax. The cheapest-looking rate is not always the lowest-cost route once fees and charges are included.

As of 19 March 2026, the official Bank Rate is 3.75%. Bank Rate does not set mortgage pricing directly, but it influences funding costs, lender pricing and borrower sentiment, which is one reason available products and rates can change during a home move.

Bank of England Money and Credit data for February 2026 showed net mortgage approvals for house purchases at 62,600 and approvals for remortgaging at 41,200. That suggests an active market, but not an easy one. Lenders are still selective on income quality, outgoings, credit profile and property type.

UK Finance expects overall gross lending to rise by 4% to £300 billion in 2026, with external remortgaging up 10% and around 1.8 million fixed rate mortgages due to come to an end. For movers, that is a reminder that pricing and lender appetite can shift as market volumes change.

For purchases in England and Northern Ireland, standard residential Stamp Duty Land Tax rates currently start above £125,000, and higher rates usually apply if you complete on the new property while still owning the old one. If the purchase is replacing your main residence, different rules can apply, and a refund may be available in some cases. Tax treatment depends on your circumstances, so confirm figures with your solicitor or accountant. As a starting point, use our Stamp Duty Calculator.

The earlier you review these costs, the easier it is to decide whether porting, borrowing more, or replacing the mortgage is likely to be the better route. It also helps you avoid building your offer around a monthly payment or fee structure that may not stand up once the full case is assessed.

Documents You Will Usually Need

The exact document list varies by lender and by case, but many moving home applications require some version of the following:

• photo ID and proof of address

• latest payslips and most recent P60 if employed

• SA302s and tax year overviews if self-employed

• recent bank statements

• your latest mortgage statement

• details of any early repayment charges

• proof of deposit or equity contribution

• memorandum of sale for your existing property, if available

• details of the property you are buying

• evidence of any bonuses, commissions or overtime being used

• documents supporting an interest-only repayment strategy, where relevant

• proof of any gifted deposit, if part of the funds are being provided by family

It is often worth checking your credit file before the application starts, especially if you have moved address, repaid old credit, or not reviewed the file recently. Small issues can delay underwriting if they only appear after the lender searches the case. For a simple starting point, download your Credit Report.

How The Process Normally Works

A moving home mortgage often follows this sequence.

1. Review the current mortgage. Confirm whether the existing deal is portable, whether early repayment charges apply, and whether a new lender may need to be considered.

2. Set the budget. Look at likely sale proceeds, deposit position, fees and monthly affordability. This is where many borrowers decide whether they are stretching sensibly or simply stretching too far.

3. Secure a decision in principle where appropriate. This can help when you start viewing or offering, but it should be treated as an early stage only, not a final commitment from a lender.

4. Submit the full application once the purchase and sale are progressing. The lender will then assess documents, run underwriting checks and instruct a valuation.

5. Respond quickly to queries. Many avoidable delays happen because documents are incomplete, out of date, or do not match the application. Bank statements, payslips and proof of deposit should be ready early.

6. Coordinate the sale and purchase. Your solicitor, estate agents and lender all need the dates to line up as smoothly as possible. This is especially important where porting is involved or where you need the equity from the sale to fund the purchase.

7. Exchange and complete. Only once the lender is satisfied, the legal work is in place and the chain is ready can the move complete.

Where a case is tight on affordability, unusual on property type, or complicated by timing, it is better to identify that early than to discover it after an offer has been accepted. A clearer plan at the start can reduce wasted valuations, rushed decisions and unnecessary pressure later on.

Speak To Mortgage One Early

Mortgage One can help you compare the practical routes before you commit to a property. That may include reviewing whether porting is realistic, whether extra borrowing is likely to be affordable, whether a full new mortgage is cleaner, and what documents are best prepared first. The aim is not to overcomplicate the move, but to make the mortgage side clearer before deadlines start to tighten.

If you are planning a sale and purchase, or you want to understand your options before making an offer, contact Mortgage One.

The information provided in this article is for general guidance only and does not constitute personal or regulated financial advice. If you’d like to understand what these moves could mean for you, speak to Mortgage One. We can explain your options and timings based on your specific circumstances.

Some Buy to Let mortgages are not regulated by the Financial Conduct Authority.