Overview

First Street Foundation builds climate-risk models for properties across the United States and provides public and licensed data to help homeowners, insurers, lenders, and governments understand potential hazards. It uses peer‑reviewed methods and climate projections to estimate risks from floods, wildfires, extreme heat, wind, and other perils at the property level, producing scores and maps that explain thirty-year exposure. Its main public product, Risk Factor, gives a 1–10 risk score for individual properties and visualizes area-wide hazards; its data can be accessed for free in summary form and via paid APIs for detailed, property-level data. The foundation differentiates itself by sharing aggregated data publicly (e.g., through AWS Registry of Open Data) while selling detailed data to for-profit clients, aiming to help decision makers in resilience, real estate, insurance, and infrastructure.

Simplify's Take

What believers are saying

• Zillow integrated First Street's risk data on all U.S. listings on September 26, 2024, boosting visibility to millions.
• $46 million Series A funds global modeling expansion beyond U.S. properties.
• Persefoni partnership on June 17, 2024, embeds data for SEC and CSRD compliance, launching Q4 2024.

What critics are saying

• CoreLogic's ClimateQuest, launched March 12, 2025, undercuts pricing with AI models for insurers and lenders.
• Moody's RMS Vera 2026 models, released April 15, 2026, seize insurer share with global probabilistic forecasts.
• Google DeepMind's open-source ClimateRiskNet, February 10, 2026, rivals accuracy for free, eroding developer revenue.

What makes First Street unique

• First Street delivers property-level climate risk scores for flood, wildfire, wind, heat, and air quality using peer-reviewed models.
• Risk Factor Pro offers customizable, granular analysis of flood, wildfire, heat impacts, and rebuilding costs for commercial real estate.
• Company Module links physical climate risks to corporate earnings across supply chains, unlike real estate-only competitors.

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Funding

Total Funding

$46M

Above

Industry Average

Funded Over

1 Rounds

$46,000,000

Series A

Jul 2024

Series A funding typically happens when a startup has a product and some customers, and now needs funding to scale. This money is usually used to grow the team, expand marketing, and improve the product. Venture capital firms are frequently the main investors here.

Series A Funding Comparison

Above Average

Industry standards

Ind Avg. $15M

$3.7M

$5M

$8.2M

$15M

$30M

$46M