California Wildfires, Property Damage, and Mortgage Repayment

Abstract

This paper examines wildfires’ impact on mortgage repayment using novel data that combines property-level damages and mortgage performance data. We find that 90-day delinquencies were 4 percentage points higher and prepayments were 16 percentage points higher for properties that were damaged by wildfires compared to properties 1 to 2 miles outside of the wildfire, which suggests higher risks to mortgage markets than found in previous studies. We find no significant changes in delinquency or prepayment for undamaged properties inside a wildfire boundary. Prepayments are not driven by increased sales or refinances, suggesting insurance claims drive prepayment. We provide evidence that underinsurance may force borrowers to prepay instead of rebuild.

Keywords: wildfires, mortgage, prepayment risk, climate risk, physical risk, underinsurance

JEL Classification: G21, G51, Q54