Mortgage on a Property in a Flood Risk Area

With climate change increasing the frequency and severity of flooding in the UK, more properties than ever are in identified flood risk areas. If you are looking at a property that has flood risk — or has actually flooded in the past — the mortgage picture is more nuanced than a simple yes or no.

Understanding Flood Risk Levels

The Environment Agency classifies flood risk into several categories:

Very Low: Less than 1 in 1,000 annual probability of flooding. No mortgage concerns.

Low: Between 1 in 1,000 and 1 in 100 annual probability. Most lenders comfortable. Insurance readily available.

Medium: Between 1 in 100 and 1 in 30 annual probability. Some lenders cautious. Insurance available but may cost more.

High: Greater than 1 in 30 annual probability. Fewer lenders. Insurance potentially expensive or difficult to obtain.

You can check any property's flood risk for free using the Environment Agency's "Check the long-term flood risk" tool at check-long-term-flood-risk.service.gov.uk (England), Natural Resources Wales, or SEPA (Scotland).

How Lenders Assess Flood Risk

Lenders care about flood risk for two reasons:

1. Property damage: Flooding can cause severe damage to their security (your property), reducing its value.
2. Insurance availability: If adequate buildings insurance is not available, the lender's security is unprotected.

The second point is actually more critical. If you can obtain comprehensive buildings insurance at a reasonable cost, most lenders will be satisfied — even if the property has some flood risk.

The Surveyor's Role

The lender's surveyor will note any flood risk indicators during the valuation:

• Proximity to rivers, canals, or the coast
• Evidence of previous flooding (tide marks, flood barriers, raised electrical sockets)
• Local flood defences
• The overall assessment of flood risk

If the surveyor flags significant flood risk, the lender may require:

• Confirmation that buildings insurance is in place and includes flood cover
• Details of any flood resilience measures installed
• A flood risk assessment from a specialist

Flood Re: The Game Changer

Flood Re is a joint initiative between the government and the insurance industry, launched in 2016. It acts as a reinsurer, allowing insurance companies to offer affordable flood insurance on properties that would otherwise be uninsurable or prohibitively expensive.

How It Works

• Insurance companies can pass the flood risk element of a home insurance policy to Flood Re
• Flood Re charges a fixed premium based on the property's council tax band (not the actual flood risk)
• This keeps premiums affordable for homeowners in high-risk areas
• The scheme is funded by a levy on all UK home insurers

Who Qualifies

Flood Re covers residential properties that:

• Were built before 1 January 2009 (to avoid incentivising building in flood plains)
• Are used as a domestic residence
• Have a council tax band

Who Does Not Qualify

• Properties built after 1 January 2009
• Commercial properties
• Council tax band H properties (the most expensive band) — though this is under review
• Leasehold properties where buildings insurance is arranged by the freeholder (unless the freeholder accesses Flood Re through their insurer)

Properties That Have Actually Flooded

A property with a history of actual flooding faces more scrutiny than one that is merely in a risk zone:

• Disclosure: Sellers must disclose flooding history on the TA6 property information form
• Insurance: Insurers will look at the claims history; previous flood claims can increase premiums
• Lender caution: Some lenders will decline properties that have flooded multiple times
• Valuation impact: A history of flooding typically reduces the property's value

However, many properties that have flooded once have subsequently had flood resilience measures installed and are insurable. A single historic flood event does not necessarily make a property unmortgageable.

Which Lenders Accept Flood Risk Properties?

Most mainstream lenders will consider properties in flood risk areas, provided:

• Adequate buildings insurance (including flood cover) is available
• The surveyor's valuation is satisfactory
• The flood risk is not assessed as extreme

Lenders known to be pragmatic about flood risk include:

• Halifax — generally flexible if insurance is available
• Nationwide — considers on a case-by-case basis
• NatWest — will lend with appropriate insurance
• Ecology Building Society — takes an environmental and individual approach
• Various building societies — many are flexible, especially those in areas with known flood risk

Flood Resilience Measures

Properties with flood resilience measures are more attractive to lenders and insurers. These include:

Resistance Measures (Keeping Water Out)

• Flood barriers for doors and airbricks
• Non-return valves on drains
• Waterproof rendering or tanking at ground level
• Raised thresholds

Resilience Measures (Minimising Damage If Water Gets In)

• Electrical sockets raised above potential flood level
• Tiled or concrete floors instead of carpet at ground level
• Water-resistant plaster and materials below the flood line
• Boiler and appliances raised or relocated above flood level

Investment in these measures can cost £5,000-30,000+ but can significantly reduce flood damage and insurance premiums.

Typical Extra Costs

• Flood risk assessment: £300-1,000 (if required by the lender or for your own information)
• Higher insurance premiums: Variable — could be £200-1,000+ per year above standard rates, depending on risk level and Flood Re availability
• Flood resilience measures: £5,000-30,000+ for comprehensive protection
• Specialist surveys: If the property has flooded before, a damp survey may be needed

Practical Advice

1. Check the flood risk before falling in love with a property — use the free Environment Agency tools
2. Get insurance quotes before committing to purchase — if you cannot get affordable insurance, the mortgage may fall through
3. Ask the seller about flooding history — have they claimed on insurance? What measures have they taken?
4. Check local flood defences — is the area protected by existing or planned defences?
5. Visit after heavy rain — see how the property and surrounding area cope with water
6. Factor in ongoing costs — flood insurance, maintenance of resilience measures, potential future flooding
7. Consider Flood Re availability — if the property qualifies, insurance should be affordable
8. Think about the future — climate change projections suggest flood risk will increase in many areas

When to Be Cautious

Some flood risk situations warrant extra caution:

• Properties that have flooded more than twice in the last 10 years
• Properties in areas where flood defences are inadequate and no improvement is planned
• New-build properties in flood plains (not covered by Flood Re)
• Properties where buildings insurance is genuinely unavailable at any price
• Coastal properties at risk of erosion as well as flooding

In these cases, the property may be genuinely difficult to mortgage, and the financial risks of ownership may outweigh the benefits.

This is educational content, not financial advice. Your situation is unique — speak to a qualified mortgage broker before making any decisions.