Falling house prices do not normally change what you owe on your mortgage or the monthly payment on an existing fixed-rate deal. The main effect is on equity: your home may be worth less, so your loan-to-value (LTV) may rise. That can make remortgaging harder, reduce the range of deals available, or leave you in negative equity if the mortgage is larger than the property value.

What changes when prices fall?

Your mortgage balance changes as you repay capital, but your property value moves with the housing market. If your home was worth £300,000 and your mortgage was £210,000, your LTV was 70%. If the property later falls to £260,000 while your mortgage is £200,000, your LTV becomes about 77%.

That matters because lenders usually price mortgage deals by LTV band. A borrower at 60% LTV may see a wider choice of fixed-rate, tracker, discount or offset deals than someone at 85% or 90% LTV. The same income and credit file can therefore produce a different remortgage outcome if the valuation has fallen.

According to MoneyHelper, remortgaging means switching to a new mortgage deal, either with your current lender or a new lender, and the process can involve fees, checks and a valuation (MoneyHelper, 2026).

If you are on a fixed-rate mortgage

A fall in house prices does not usually alter your payment during the fixed deal period. Your interest rate and monthly payment are set by the mortgage contract.

The issue is more likely to appear when the deal ends. If your LTV has worsened, you may not qualify for the same range of new remortgage products. You might still be able to take a product transfer with your current lender, which can be simpler than moving to a new lender, but the rate, fees and eligibility rules will depend on the lender.

Check any early repayment charge (ERC) before switching early. An ERC can wipe out the saving from a lower rate, especially if you are still inside the initial deal period.

If you are on a tracker or SVR

House prices do not directly set tracker or standard variable rate (SVR) payments. Trackers usually move in line with the Bank of England base rate, while SVRs are set by lenders and can change at their discretion.

The Bank of England says Bank Rate is the core UK interest rate and affects many lending and savings rates across the economy. As of June 2026, Bank Rate is shown on the Bank of England page as 3.75%; rates change frequently, verify current terms with an FCA-authorised lender or adviser before deciding (Bank of England, 2026).

The link with falling house prices is indirect. If your LTV rises, you may have fewer options to move away from a tracker or SVR when you want a new deal.

Negative equity is the main risk

Negative equity means your mortgage is higher than the property value. For example, if your mortgage is £220,000 and your home is valued at £210,000, you are £10,000 in negative equity.

Read also: Time to Remortgage in the UK? How to Get the Best Deal, Even if It Costs More

This is usually most serious if you need to sell or remortgage. If you stay in the home and keep paying the mortgage, you may be able to wait for the balance to reduce or the market to recover. But if you must move, you may need lender consent, savings to cover the shortfall, or specialist advice.

MoneySavingExpert’s mortgage guidance explains the wider mortgage process and deal choices, including how rates and borrower circumstances affect options (MoneySavingExpert, 2026). Which? also publishes UK mortgage and property guidance for borrowers comparing mortgage choices and understanding the buying and remortgaging process (Which?, 2026).

What should you do next?

Start with three checks:

  1. Estimate your current property value using recent local sold prices, not only asking prices.
  2. Compare that estimate with your latest mortgage balance to work out your approximate LTV.
  3. Check when your current deal ends and whether any ERC applies.

Then speak to your lender or an FCA-authorised mortgage adviser before making a decision. This is especially important if you are close to a higher LTV band, need to move home, have an interest-only mortgage, or think you may be in negative equity.

Quick answers

Will my lender ask for more money if prices fall?

Usually no, provided you keep making payments and do not breach the mortgage terms. Normal market falls do not automatically trigger a demand for a lump sum on a standard residential mortgage.

Can I still remortgage if my home has fallen in value?

Possibly, but the available deals may be worse if your LTV has increased. A product transfer with your existing lender may be available even when moving to a new lender is harder.

Should I overpay if prices are falling?

Overpaying can reduce your mortgage balance and improve your LTV, but it is not automatically best. Check ERCs, emergency savings, other debts and whether your lender has an annual overpayment limit.

This article is general educational information, not regulated mortgage advice, personalised financial advice, lending advice, legal advice or tax advice. Refisage is not authorised by the Financial Conduct Authority (FCA). Eligibility, fees and availability vary by lender, product and your circumstances, and property taxes and schemes differ across England, Scotland, Wales and Northern Ireland. Consider speaking to an FCA-authorised mortgage adviser, MoneyHelper, or a qualified tax professional before deciding. Your home may be repossessed if you do not keep up repayments on your mortgage.