Remortgaging Guide
A plain-English walkthrough of why people remortgage, when to start, what actually happens during the process, and the mistakes worth avoiding along the way.
What Is Remortgaging?
Remortgaging means replacing your existing mortgage with a new deal, either by moving to a different lender or switching products with your current one. Here’s what that involves, and why most people do it.
Two Routes to Remortgaging
Product transfers versus full remortgages
A product transfer means staying with your current lender and simply moving onto one of their other rates. It’s usually quicker, needs less paperwork, and skips a full affordability reassessment — but you’re limited to whatever deals that one lender offers.
A full remortgage means applying to a new lender entirely. It takes longer and involves a fresh credit check and valuation, but it opens up the whole market, which is where the biggest savings usually come from.
Why People Remortgage
The most common reasons homeowners switch
Avoiding the Standard Variable Rate
When a fixed or discounted deal ends, most lenders move you onto their Standard Variable Rate (SVR) by default — usually the most expensive rate they offer. Remortgaging before that happens avoids the jump.
Securing a Lower Rate
If market rates have fallen, or your credit profile and loan-to-value have improved, a new deal can lower your monthly payments and the total interest you’ll pay over the term.
Releasing Equity
If your property has grown in value or you’ve paid down a good chunk of the balance, remortgaging can free up cash for home improvements, debt consolidation, or other large expenses.
Changing the Term or Structure
Some homeowners remortgage to shorten their term and become mortgage-free sooner, extend it to reduce monthly outgoings, or switch between repayment and interest-only.
When to Start
A realistic remortgage timeline
Check your current deal
Find your deal’s end date and any Early Repayment Charge that applies before it ends.
Compare the market
Start researching rates or speak to a broker so you know what a competitive deal looks like.
Apply and lock in a rate
Most lenders let you secure an offer three to six months ahead of completion, with no obligation to proceed.
Legal work & valuation
Conveyancing and the property valuation are completed in the run-up to your switch date.
Completion
Your old mortgage is repaid and the new one begins — timed to line up with your current deal’s end date.
The Remortgaging Process
Once you’ve decided to switch, the process itself follows a fairly consistent path, whether you’re moving lenders or transferring products.
Review your existing deal
Note your current rate, remaining balance, end date, and any Early Repayment Charge, so you know exactly what you’re comparing against.
Check your credit file and loan-to-value
Your credit score and how much equity you have in the property both affect which rates you’ll qualify for. Correcting errors on your credit file before applying can help.
Compare deals or speak to a broker
Weigh the interest rate against any arrangement fees and incentives like free legal work or a free valuation — the lowest rate isn’t always the cheapest deal overall.
Submit your application
You’ll provide proof of income, bank statements, ID, and details of your existing mortgage so the new lender can assess affordability.
Valuation and underwriting
The lender arranges a valuation of your property and underwrites the application. Many remortgage valuations are done remotely rather than in person.
Offer, legal work, and completion
Once your mortgage offer is issued, conveyancing wraps up outstanding legal checks, and completion happens on an agreed date — ideally right as your old deal ends.
What You’ll Need
Documents to have ready
- Proof of ID (passport or driving licence)
- Proof of address, usually a recent utility bill
- Last three months’ payslips, or two years of accounts if self-employed
- Three to six months of bank statements
- Your latest mortgage statement showing the outstanding balance
- Details of your household outgoings and any other debts
Common Remortgaging Mistakes
A few avoidable errors account for most of the regret homeowners report after remortgaging.
Leaving it too late
Waiting until your deal has already lapsed onto the SVR means paying an elevated rate while a new application is processed.
Ignoring the Early Repayment Charge
A tempting new rate can be wiped out entirely by an ERC on your current deal — always get this figure before applying elsewhere.
Comparing rates without fees
A slightly higher rate with no arrangement fee can beat a lower rate with a large upfront fee, especially on smaller balances.
Overlooking affordability changes
A change in income, new debt, or reduced hours since your last mortgage can affect what a new lender is willing to offer.
Not checking the loan-to-value band
Even a small drop in your loan-to-value can move you into a lower-rate bracket, so a fresh valuation is worth getting right.
Making multiple hard applications
Applying to several lenders directly can leave multiple hard searches on your credit file. A broker’s whole-of-market search or a soft-search tool avoids this.
Remortgaging FAQ
Answers to the questions that come up most often once someone starts looking into remortgaging.
Most remortgages complete in four to eight weeks from application to completion, though it can take longer if a physical valuation is required or if your paperwork is incomplete. Starting the process around three months before your current deal ends gives you a comfortable buffer.
Yes, but you may need to pay an Early Repayment Charge to your existing lender for leaving before the deal’s end date. Many lenders let you secure a new rate up to three to six months in advance, so you can lock in a deal without paying an ERC if it completes exactly when your current deal ends.
You need conveyancing to be carried out, but many lenders include free legal work as part of a remortgage package. If you are also releasing equity or changing the names on the mortgage, you may need to arrange your own solicitor.
Applying for a new mortgage involves a credit check, which can cause a small, temporary dip in your score. Making several applications in a short space of time can have a bigger impact, so it is worth using a broker or eligibility checker that performs a soft search before you commit to a full application.