Securing a mortgage has always involved deep financial scrutiny by lenders. Now, a new factor is entering the equation: climate change. The rising frequency and costs of climate disasters are prompting lenders to re-evaluate how these events could impact their financial exposure.

Insurers are struggling to keep pace, often withdrawing from high-risk zones, wich exacerbates potential losses. Furthermore, shifts in federal disaster management, including potential funding cuts, add to the uncertainty.

According to a new report from First Street, climate risk is becoming a critical element in credit score assessments, alongside conventional factors like debt, income, and collateral. the risks considered include floods,wildfires,and wind damage.

The report projects that in a severe weather year, climate-driven foreclosures could lead to $1.21 billion in bank losses, representing 6.7% of all foreclosure credit losses. Within a decade, these losses could surge to $5.36 billion, accounting for nearly 30% of foreclosure losses, as extreme weather events become more common and destructive.

As lenders integrate climate considerations into their underwriting processes, a consumer’s credit score could fluctuate based on their property’s risk profile, potentially leading to higher borrowing costs. The study identifies California, Florida, and Louisiana as the states currently facing the highest lender losses.

Climate Risk Eroding Mortgage Foundations

“Mortgage markets are now on the front lines of climate risk.”

Properties damaged by flooding during extreme weather events experience higher foreclosure rates compared to their unaffected neighbors.Historically, post-flood foreclosures surge by an average of 40% among damaged homes, according to the report.

Homeowners in high-risk areas, such as the Florida coasts, are already facing notable increases in insurance premiums due to recent storms. The First street report links these premium hikes to a rise in foreclosures, as some homeowners are unable to afford the increased costs and choose to abandon their properties, leaving lenders with the financial burden.

While some lenders mandate flood insurance for homes in government-designated flood plains,the broader effects of future climate change are not yet consistently factored into underwriting models. Fannie Mae, a major player in the mortgage market, explored this issue two years ago but has not yet implemented any changes.

The annual costs associated with climate-related disasters have increased by 1,580% over the past four decades, according to the First Street report, which analyzed data from the National Oceanic and Atmospheric Administration’s billion-dollar weather and climate disaster database.

This surge in costs is attributed to increased storm severity, inflation, growing populations, and increased real estate growth in vulnerable areas. Despite the risks, many Americans continue to favor coastal living and are willing to pay a premium for it.

The escalating costs and associated risks are impacting households,financial institutions,and investment portfolios alike.

According to Jeremy Porter, head of climate implications at First street, traditional credit loss models do not fully account for the significant credit loss risk linked to climate change. He emphasizes the systemic impact of weather disasters on the mortgage market,encompassing both direct damages and indirect effects such as rising insurance costs.