First Street

Core Features

First Street models are built to simulate how floods, wildfires, and other climate events would affect real properties in real conditions. The company uses established scientific research and engineering calculations to estimate both current and future climate risk at the property level.

• Property-Level Risk Scores — Generates Risk Factor™ scores for flood, wildfire, wind, heat, and air quality exposure at individual property level across the U.S.

• Climate Financial Risk Modeling — Connects environmental hazards with mortgage, insurance, and asset-valuation impacts for banks, investors, and portfolio managers.

• Interactive Hazard Mapping — Provides high-resolution maps and spatial analytics for flood plains, wildfire exposure zones, wind risk, and heat forecasts.

• Insurance Exposure Analysis — Supports underwriting and insurance-related workflows by identifying areas with elevated non-renewal risk or changing premium exposure.

• Portfolio and API Integrations — Offers data delivery and API access for integration into banking systems, property platforms, investment analysis, and real-estate applications.

• Future Climate Scenario Forecasting — Models projected hazard exposure under changing climate conditions rather than relying solely on historical disaster records or FEMA flood maps.

Closing Insights

First Street was established to address what its founders viewed as a gap between climate science and financial decision-making, particularly in property markets and insurance underwriting. Founder and CEO Matthew Eby has described climate exposure as a financial risk issue affecting property values, insurance, and lending decisions, not solely an environmental concern. First Street became widely known for research suggesting that millions more U.S. properties face substantial flood risk than indicated by FEMA flood maps.

The company’s differentiation comes from its property-level climate modeling and its focus on financial implications tied to mortgages, insurance, and asset valuation. Rather than concentrating on enterprise sustainability disclosures, First Street has embedded its data into real-estate and financial workflows. Zillow integrated First Street climate-risk data into U.S. property listings in 2024, exposing flood, wildfire, heat, wind, and air-quality risks directly to homebuyers. Leading climate reporting platforms like Persefoni have also integrated First Street data into their workflows.

First Street has also expanded into portfolio-level and correlated-risk modeling for banks and investors. In 2024, the company raised additional funding led by Innovation Endeavors to support software development and broader commercial deployment. Public pricing is available for homeowner and residential-property reports through subscription-based access, while enterprise pricing is customized.