Climate Risk, Lending Decisions, and the Shift Towards Property-Level Insight

With weather-related insurance claims in the UK reaching a record £6.1 billion in 2025, climate risk is no longer abstract. It now directly shapes how lenders assess properties, influencing both mortgage decisions and property insurability.

To understand why, it helps to consider the regulatory expectations on lenders and how environmental risk is being interpreted in practice.

In this blog, we explore how climate risk is influencing mortgage lending, why environmental searches don’t always tell the full picture, and how property-level flood risk assessments can support more confident decisions for conveyancers, lenders and homebuyers.

How Climate Risk Regulation Is Changing

In the UK, banks and many lenders are supervised by the Prudential Regulation Authority (PRA), which sits within the Bank of England. Its job is to ensure that firms manage risks in a way that keeps both the financial system and customers protected.

Over the past few years, the PRA has been setting out expectations on how lenders should deal with climate-related risks in documents called Supervisory Statements.

Earlier guidance introduced the idea that climate risk should be considered by lenders and in response, lenders started to look at climate risk in their portfolios. More recent updates, published in 2025, go further. They expect lenders to show how climate risk is actually being factored into day-to-day decisions, including lending.

This goes beyond long-term strategy or reporting, reaching into underwriting and credit risk – including how individual properties are assessed.

The Gap Between Flagging and Understanding Environmental Risk

Environmental search reports play a vital role in identifying potential risks, providing an essential first step in the conveyancing and lending process. When a risk is flagged, however, it does not always provide the full context needed to support a decision.

A search may indicate a potential flood risk, but it will not usually answer:

• How likely flooding is at that specific property
• What type of flooding is relevant
• Whether any existing mitigation measures are in place
• How the risk should be viewed in a lending context

This is where further analysis can add value. By building on the information already provided in search reports, a deeper understanding of the risk can support more balanced, informed decision-making, rather than relying on a flag alone.

Can Climate Change Affect Mortgage Approval in the UK?

While rare cases have seen lenders such as Nationwide Building Society decline applications due to flood risk, the overwhelming majority of lending decisions can still proceed where appropriate mitigation measures – such as flood defences – are in place.

This reflects a broader shift in how climate risk is assessed. Regulatory expectations now require lenders to go beyond simply identifying a risk and instead understand how it applies to a specific property. However, this can present a challenge, as risks may be identified even when their full implications are not yet fully clear.

The context is also changing. A growing number of properties across the UK are exposed to climate-related risks, including flooding, ground movement, and coastal change, while new homes continue to be built in at-risk areas. As a result, simple risk avoidance is no longer a practical approach. Instead, there is a growing opportunity to consider how risks can be understood and managed at a property level, including through mitigation measures that support both lending decisions and long-term resilience.

In many cases, the challenge lies in uncertainty rather than severity. Improving how risk is understood at property level enables lenders to make more balanced decisions, meet regulatory expectations, and continue supporting lending in circumstances where others may step back.

A Recent Example

A specialist lender asked Ashfield Solutions to review a portfolio of apartment properties, including both new-build and existing units.

Environmental searches had flagged potential flood risk across several of the properties. This created uncertainty for the lender and was flagged by their risk underwriting team. The lender needed a clearer view before deciding whether the properties represented good security for their loans.

Moving to Property-Level Assessment

We carried out focused desktop flood assessments for each property. 

The aim was to interpret existing data rather than introduce unnecessary complexity. Each report set out:

• A clear view of the level of flood risk
• The main factors contributing to that risk
• Whether the property could reasonably be considered suitable for lending
• Any practical steps or considerations where relevant to reduce risk at the properties

The emphasis was on explaining the situation in plain terms, so that a lending decision could be made with confidence.

The Outcome

With a better understanding of the risks involved, the lender was able to proceed with a number of cases that had initially raised concern.

The risks had not disappeared, but they had been assessed properly and placed in context. That allowed for a more balanced decision and despite some risk being present, the lender was able to accept the properties as security.

A Changing Approach to Climate Risk in UK Lending

This example reflects a broader shift in how we look at environmental and climate risk on property. 

The key question is no longer just whether a risk exists. Most properties will have some level of environmental risk. The more useful question is what that risk looks like in practice and whether it is manageable.

For lenders, this means:

• Looking beyond initial search results or data checks
• Using additional analysis where needed
• Applying judgement alongside data

Detailed, well-explained assessment is becoming more important. Not as a replacement for environmental searches, but as a way to bridge the gap between a flagged issue and a clear, supportable lending decision.From flood risk reports to detailed environmental assessments, Ashfield Solutions supports property professionals with rapid, reliable insight. Whether you need to satisfy lender requirements or understand a property’s risk profile, our team is here to help. Get in touch on 01443 803540 to find out how our environmental consultants can support your next transaction.