Buying a Property

Flood Insurance for Property Buyers, What You Need to Know

Flood risk affects property insurability, mortgage availability, and long-term value. This guide explains Flood Re, how to check flood risk, and what buyers should consider before purchasing.

Published: 22 Jan 2026 · Updated: 16 Mar 2026 · 7 min read

#HouseBuying#UKProperty#FloodRisk#PropertyInsurance#PropertyPassportUK

Why Flood Risk Matters When Buying

Flood risk is one of the most significant factors affecting whether a property is insurable, mortgageable, and resaleable. A property in a high flood-risk zone may attract inflated insurance premiums, require specialist insurers, or, in extreme cases, be uninsurable through standard channels.

Given that the Association of British Insurers estimates around 5 million properties in England are at some risk of flooding, understanding flood risk before exchange is essential.

How to Check Flood Risk

**Environment Agency (EA):** The EA's Long Term Flood Risk Assessment is a free, publicly accessible map that indicates the likelihood of flooding from rivers, the sea, and surface water for any address in England. It classifies risk as:

Risk Level	Approximate Annual Probability
High	Greater than 3.3% (1 in 30 year)
Medium	1% to 3.3% (1 in 30 to 1 in 100 year)
Low	0.1% to 1% (1 in 100 to 1 in 1,000 year)
Very Low	Less than 0.1%

Natural Resources Wales provides equivalent mapping for Wales.

**Environmental Search:** A formal environmental search (obtained as part of your conveyancing pack) will typically include a flood risk report from a specialist provider. This may provide more granular data than the EA map alone.

Flood Re

Flood Re is a government-backed reinsurance scheme jointly funded by UK insurers, designed to make flood insurance more affordable and available for high-risk properties. It operates as a backstop: insurers that participate in the scheme can cede (pass on) the flood risk element of domestic insurance policies to Flood Re, enabling them to offer affordable premiums.

**Key points about Flood Re:**

Applies to domestic buildings and contents insurance only (not commercial)
Does not apply to properties built after 1 January 2009
Tenants can benefit through their landlord's participation in the scheme
Flood Re is scheduled to operate until 2039, after which pricing is expected to reflect actual flood risk more directly

If a property was built after 2009 and is in a flood-risk area, it falls outside the Flood Re scheme and insurance may be harder to obtain or more expensive.

What Buyers Should Do

**Before making an offer:** Check the EA flood map and establish the property's risk category. View the property after heavy rainfall if possible, look for flood marks, pump equipment, or flood doors that may indicate previous flooding.

**During conveyancing:** Request a full environmental search. Ask the seller to complete the TA6 Property Information Form honestly, including section 7.3 which asks specifically about flooding.

**Speak to insurers early:** Obtain indicative insurance quotes before exchange, not after. A property that cannot be insured at reasonable cost may affect your ability to obtain a mortgage.

**Check the claims history:** You can ask the current insurer for any flood-related claims history on the property, though sellers are not legally obliged to disclose this separately from the TA6 form.

Flood Risk and Mortgages

Most mortgage lenders require buildings insurance as a condition of lending. If a property is uninsurable or prohibitively expensive to insure due to flood risk, lenders may decline to lend. Some specialist lenders have experience with high flood-risk properties, but rates and terms will reflect the risk.

Property Passport UK allows you to view flood risk data alongside other official property records, helping buyers understand the full picture before committing.