First Street is a climate risk financial modeling company that connects climate science and financial risk at scale. Its core work involves physics-based deterministic modeling to quantify and communicate risk for properties and asset classes across real estate, infrastructure, and companies. The firm's models calculate past, present, and future climate risk for every property in the country.
The organization serves financial institutions, companies, and governments. Its data is used by institutional investors such as Norges Bank Investment Management and Blackstone, banking enterprises including Bank of America and Fifth Third, and government bodies ranging from Fannie Mae to the US State of Connecticut. Its models reach millions of everyday users through integration with major real estate platforms like Zillow, Redfin, Realtor.com, and Homes.com.
First Street's technical domains encompass climate science, financial modeling, and physics-based deterministic modeling. The company operates primarily within the United States, with a geographic scope extending globally. Its work supports verticals including real estate, infrastructure, and the broader financial sector.