FCA Data Reveals 1 in 7 English Mortgages Are in Flood-Risk Areas: What It Means for You

If you are planning to buy a home or remortgage your existing property, flood risk might not be the first thing on your checklist. However, recent data from the Financial Conduct Authority (FCA) shows that climate risk is already a major factor across the UK property landscape.

According to the FCA, around one in seven mortgages in England (almost 16%) are on properties located in postcodes with some degree of flood risk. The regulator mapped mortgage postcode data against Environment Agency datasets covering rivers, the sea, and surface water to understand broad lending exposure.

Regional patterns and flood types

Flood exposure varies considerably depending on the region and the primary type of flooding:

• Surface-water flooding in urban areas: High risk from surface water is heavily concentrated in and around London. Essex recorded the highest proportion of mortgage postcodes in the high-risk category at 6.5%. Overall surface-water exposure was highest in Inner London West, where 24% of analysed mortgage postcodes fell into a flood-risk category, followed by Inner London East at 21%, and Outer London West and North West at 19%.

• River and coastal flooding: Risks from rivers and the sea are most pronounced in eastern coastal and rural regions. Lincolnshire led with 8.5% of mortgage postcodes falling within medium and high-risk categories, followed closely by East Yorkshire at 7.7%.

Interestingly, the FCA investigated whether there was any consistent link between loan-to-value (LTV) ratios and flood risk, but found no direct relationship between the two.

How flood risk impacts your mortgage and homeownership costs

When calculating the monthly outlay of running a home, it is essential to look beyond the basic mortgage repayment. True ownership costs include maintenance, council tax, service charges or ground rent where applicable, and critically, buildings insurance.

Mortgage lenders require valid buildings insurance to be in place as a condition of borrowing, protecting the asset that secures the loan. If a property carries a higher risk of flooding, securing adequate insurance can become more complex or significantly more expensive:

• Higher insurance premiums: Properties in identified flood zones often face higher insurance excess levels or elevated monthly premiums, adding directly to your ongoing household expenses.

• Remortgaging and resale challenges: If insurance becomes difficult to arrange or prohibitively expensive, future buyers may struggle to secure a mortgage. This can impact property valuations and make remortgaging with a new lender more complicated.

• Valuation considerations: Lenders assess whether a property provides adequate security for the loan. While flood risk does not automatically prevent you from securing a mortgage, surveyor comments and insurance availability play a central role in lender approval.

Practical steps when assessing a property

If you are considering buying a home or reviewing your current mortgage in an area with potential flood exposure, taking a few proactive steps can help avoid unexpected hurdles:

• Check flood maps early: Use Environment Agency tools during your initial property search to understand whether surface-water, river, or coastal risks apply.

• Obtain insurance quotes upfront: Do not wait until exchange of contracts to look for buildings insurance. Requesting quotes early in the conveyancing process ensures cover is available at a price that fits your budget.

• Review environmental searches: Ensure your conveyancer reviews environmental search reports thoroughly to highlight localized drainage or historical flooding issues.

• Speak with an independent adviser: A professional mortgage adviser can guide you through lender-specific criteria regarding flood risk and help ensure your mortgage application proceeds smoothly.

Your home may be repossessed if you do not keep up repayments on your mortgage.

If you have questions about securing a mortgage or ensuring your property meets lender requirements, our team is here to offer clear, practical advice based on your individual circumstances.