Top 5 pitfalls to avoid when remortgaging your home

Remortgaging pitfalls to avoid

Remortgaging is often described as “like applying again”, and that’s broadly true. Even if you’re staying with the same lender, you’ll usually go through a fresh application, your property will be revalued, and the new deal will come with its own terms (including any tie-in period).

Because your circumstances and the property market can change, it’s easy to overlook details that matter. Below are five common pitfalls and what you can do to avoid them.

1) Relying on a lender’s “existing customer” offer

It’s tempting to assume the best option will be the one presented by your current lender. Some lenders do offer attractive deals to existing customers, but that doesn’t automatically mean it’s the most suitable mortgage for your overall situation.

How to avoid this pitfall

• Compare options across the market rather than focusing only on what’s available from your current lender.
• Consider whether the structure of the mortgage matters for you (for example, fixed vs variable, and how long you want certainty over repayments).
• Get advice to help you match a product to your needs, rather than choosing based on headline marketing.

2) Underestimating early repayment charges and other costs

When you remortgage before your current deal ends, you may face costs for redeeming the mortgage early. These can include an early repayment charge (ERC) during the fixed or introductory period, plus an administration fee for closing the account.

Why this becomes a problem

• People sometimes focus only on the potential savings from a new rate, then discover the ERC and fees reduce (or eliminate) the benefit.
• Others assume costs will be “small”, without checking the position for their specific mortgage.

How to avoid this pitfall

• Check your current mortgage documentation for any ERC and account closure/admin charges.
• Work out the timing impact: ERCs typically reduce as your current deal approaches its end date.
• If you’re considering remortgaging early, make sure you understand the total cost picture—not just the new monthly payment.

3) Not reassessing affordability after life changes

Your ability to borrow can change significantly since you took out your current mortgage. Even if your outgoings feel similar day-to-day, lenders assess affordability using information that may have shifted.

Common changes include:

• Employment status (e.g., moving jobs, becoming self-employed)
• Income changes (including bonuses or commission)
• New or increased debts
• Household changes (e.g., relationship status or dependants)

How to avoid this pitfall

• Treat remortgaging as a review of your current financial position, not a straight swap.
• Ensure any application information is accurate and up to date, especially where income or commitments have changed.
• If your circumstances have improved, you may find more options available; if they’ve worsened, you may need a different approach.

4) Timing the remortgage poorly

Remortgaging takes time. There’s the application process, lender checks, and a property valuation. If you leave it until the last minute, you can end up on your current lender’s standard variable rate (or another less favourable arrangement) while the new mortgage is arranged.

How to avoid this pitfall

• Plan ahead so the new deal is ready before your current tie-in period ends.
• Build in time for valuation and underwriting, which can vary depending on the lender and the complexity of the case.
• If you’re close to the end of your current deal, consider how the timing affects ERC exposure and the start date of the new product.

5) Missing opportunities by not maximising your loan-to-value (LTV) position

Mortgage pricing is closely linked to loan-to-value (LTV)—the relationship between the loan amount and the property’s value. If your property has increased in value since you bought it, your LTV may be lower, which can improve the range of products available.

However, the lender’s valuation matters. If the property isn’t presented well, the valuation may not reflect its best market potential.

How to avoid this pitfall

• Consider how the property is likely to be valued and whether any maintenance or presentation work could help.
• Keep the home in good order so the valuation reflects a property that would appeal to buyers in the open market.
• If you’ve made improvements, ensure they’re properly documented so they can be taken into account where relevant.

Summary

Remortgaging can be a straightforward way to review your mortgage terms, but small oversights can create avoidable costs or delays. The most common pitfalls tend to fall into five areas: choosing only from your current lender, ignoring ERCs and fees, failing to reassess affordability after changes, leaving timing too late, and not maximising your LTV/valuation position.