FFirst Street Foundation quantifies and communicates climate risk for U.S. properties as a non-profit research and technology group. It builds property-level models for floods, wildfires, extreme heat, wind, and other perils using peer-reviewed methods and climate projections. Its Risk Factor tool offers a free 1–10 risk score for individual properties with maps and explanations; data can also be accessed via API or licenses, while aggregated statistics are publicly available. The goal is to make climate risk data transparent and actionable for individuals, governments, and industries to guide decisions on resilience, insurance, real estate, and infrastructure.
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Florida sues First Street over inflated flood risk scores. By E-A-A / October 31, 2026 Florida's Attorney General has officially filed a major lawsuit against First Street Technology over its controversial flood risk scoring system. The state alleges that the company's proprietary risk models artificially inflate flood hazard ratings for properties across the region. According to the complaint, these inflated scores have directly driven up insurance costs for homeowners throughout the state. Furthermore, the lawsuit claims that inaccurate risk assessments are depressing property values and harming the broader real estate market. Table of Contents Understanding the impact on real estate. State officials argue that First Street operates with a troubling lack of transparency regarding how its metrics are calculated. Many industry professionals often evaluate these methodologies when reviewing architecture articles to understand modern property valuation shifts. The complaint asserts that these misleading ratings cause unwarranted panic and financial distress among local residents. Real estate and insurance stakeholders have increasingly relied on these scores, amplifying their negative economic impact. The broader market consequences. The legal action seeks to halt the dissemination of what the state calls deceptive and damaging flood models. Ultimately, the lawsuit aims to protect Florida homeowners from unfair financial burdens and inflated housing market penalties. For those looking closely at housing trends, studying informational guides can offer deeper clarity on local zoning laws. Stakeholders hope this courtroom battle will restore a greater sense of fairness to property evaluations moving forward. Additional Reading:
Florida sues the company behind flood scores on home listings, citing a house rated '10/10 Extreme' next to two 1/10s. Oct 31, 2026 If you live in Florida, you might be overpaying for flood insurance - and unfortunately there's very little you can do about it. Attorney General James Uthmeier recently filed a lawsuit against First Street Technology, a company that rates individual homes on multiple types of risks. These risk models, which include flood, wildfire and extreme heat, are then used by insurers to determine insurance pricing in the area. The money news that actually matters. Uthmeier alleges that the First Street Technology has broken the Florida Deceptive and Unfair Trade Practices Act by misrepresenting Flood risk numbers as accurate to Florida residents. Here's what's behind those claims. Higher climate numbers means higher insurance rates and less home sales. In the lawsuit, Uthmeier says that First Street's flood risk ratings routinely deviate from trusted, government-made FEMA flood maps. The lawsuit cites a study that says First Street models agree with FEMA models around 55% of the time, on average, but only around 23% to 24% in areas with medium and high urbanization. "First Street rates certain properties as major flood risk, but FEMA rates the same properties as minimal flood hazard, the lowest federal certification," said James Uthmeier in an X post on Oct. 23. The lawsuit also cites a Better Business Bureau complaint where the customer said their house was given a 10/10 flood rating indicating extreme risk, while their next-door neighbors were both given a 1/10 rating. The lawsuit alleges that First Street's models are faulty, and that they exaggerate the risk that homeowners or prospective home buyers face. This matters because homes with high climate risk ratings tend to sell less often and for lower amounts of money. If underwriters are basing risk on exaggerated numbers, then the insurance they provide will have a higher cost. "Florida homeowners deserve facts, not alarmist scores that hit their property values and their wallets," Uthmeier said.
Climate risk scores could be hurting home sales, two states allege in lawsuits. The complaint targets Risk Factor grades for flood, wildfire, wind, heat and air quality that appear on major listing portals October 27, 2026, 12:47pm by Brooklee Han Article Summary. Florida and Nebraska attorneys general allege First Street's climate risk scores presented on listing sites lack adequate uncertainty disclosures and can mislead homebuyers and sellers. The Florida filing seeks injunctive relief, consumer redress, disgorgement and civil penalties of $10,000 to $15,000 per violation. AI Summary Climate risk analytics firm First Street is facing lawsuits from attorneys general in both Florida and Nebraska regarding the climate risk data it supplies real estate listing portals to post alongside property listings. The Florida lawsuit was filed last Friday in Polk County. The suit alleges that First Street has violated the Florida Deceptive and Unfair Trade Practices Act. In a video posted on X, Florida Attorney General James Uthmeier said that Florida "homeowners deserve facts, not alarmist scores that hit their property values and their wallets." "First Street rates certain properties as major flood risk, but FEMA rates the same properties as minimal flood hazard, the lowest federal classification," Uthmeier said. "Their models are speculative, based on undisclosed choices and frequently contradict official data. They claim transparency and peer review, yet underlying details are hidden behind a paywall, and independent analysis shows major discrepancies." Membership Full access Billed annually Membership includes: * | Unlimited access to HousingWire reporting and analysis * | Access to HousingWire Intelligence * | Member-only newsletter * | Event perks Free account Limited access * | Read 2 subscriber-only articles each month
MSCI acquires First Street to expand property-level physical climate risk analytics, helping investors assess climate-related financial exposure worldwide.
Attorney General files lawsuit against First Street for harming Nebraska homeowners. Brian Neben Aug 27, 2026 | 11:26 AM LINCOLN - Attorney General Mike Hilgers filed a lawsuit against climate risk company First Street for inaccurate and misleading property-specific loss predictions that have depressed Nebraska's real estate market and made it difficult for Nebraskan homeowners to sell their homes. First Street claims to offer "accurate and reliable" risk scores for loss events like flood and fire for every parcel of property in Nebraska. For many properties, however, First Street's scores are neither accurate nor reliable, with serious consequences for Nebraskans. Specifically, the lawsuit alleges that: Many of First Street's scores are based on inaccurate or incomplete information about the property being scored, including failing to account for certain flooding protection measures homeowners have invested in. First Street also fails to disclose that its predictions, which it misleadingly presents as hard facts, may be very different from the federal government's data or the predictions of other climate risk models. First Street insulates its uncertain and flawed predictions by withholding its underlying data as proprietary and through an express policy of refusing to consider consumer disputes. This includes failing to provide homeowners with meaningful dispute resolution when the prediction is based on error. Despite these problems, major real estate companies like Zillow direct consumers to First Street's flawed predictions by linking them to real estate listings. As a result, many homeowners have had to accept reduced prices from buyers that have been spooked by First Street's scores. Others have watched their homes sit on the market for longer than expected, and, in some cases, have been unable to sell their homes at all. "First Street is making a profit at the expense of the value of Nebraskans' homes," said Attorney General Hilgers. "First Street passes off misleading and often inaccurate climate speculation in a way that drives down home values and increases costs and frustrations for Nebraskans. The deceptive behavior has to stop." Attorney General Hilgers is taking legal action to address these concerns. He wants the court to stop First Street's unfair and dishonest business practices, make them pay fines, and return unlawfully earned profits. The lawsuit was filed in Dakota County District Court where many homeowners were negatively affected by First Street's inaccurate climate scores. The Nebraska Attorney General's Office enforces consumer protection laws and advocates for Nebraska consumers. Kearney Catholic High School work to ensure a fair, honest, and safe marketplace for residents of the State.
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Industries
Company Size
11-50
Company Stage
Acquired
Total Funding
$46M
Headquarters
New York City, New York
Founded
2017
Find jobs on Simplify and start your career today
Don't see your dream role? Check out thousands of other roles on Simplify.Browse all jobs