The big picture: Nationwide, roughly 6.1% of homes (worth around $3.4 trillion) are at severe or extreme risk of flood damage, 18.3% ($8 trillion) from hurricane wind damage and 5.6% ($3.2 trillion) from fire.
Zoom in: Flood risks, in particular, are "largely underestimated," per the analysis, which looks at data from First Street.
About 2% of San Diego County homes, worth $17.9 billion, are at risk of severe and extreme flood damage, per the report.
State of play: The estimated insurance premium for a typical home in San Diego County is $3,133, according to the data.
The bottom line: "Understanding climate risk in the housing market is essential, as these challenges not only affect residential safety but also influence property values, insurance costs, and overall market stability," Realtor.com economist Jiayi Xu wrote in the report.