Now Lists Flood Scores for Properties

Properties now display a Flood Factor.
September 1, 2020

Home-buying website has become the first site to disclose information about a home's flood risk, for every property in the U.S. in its online listings. says each of the approximately 110 million home listings on its site now includes both publicly and privately assembled flood risk information.

Properties now display a Flood Factor from First Street Foundation, a nonprofit research and technology group, which is a score between 1 and 10 that represents its cumulative risk of flooding over a 30-year mortgage. First Street Foundation launched an interactive website offering flood risk data on more than 142 million homes and properties across the country, and now uses those scores on all its listings.

Properties also display their Federal Emergency Management Agency Flood Zone, providing users with a comprehensive understanding of their flood risk. Users can also drill down for additional details on past, present, and future risk, and explore the interactive flood map.

Banks and insurers have been quietly building their own databases or contracting with third-party companies to develop more detailed assessments of climate-driven risks like flooding and wildfires, but they rarely make that information public, according to Politico.

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