Overview
See wildfire, flood, heat & climate risks for California homes — on Zillow, Redfin, Realtor.com, Trulia & more.
Know the climate risks before you buy. Climate Risk - California displays free, educational climate hazard data for any California property listing — right in a Chrome side panel that sits alongside the page without modifying it. Works on: • Zillow • Redfin • Realtor.com • Trulia • Compass • and more Current Conditions • Wildfire — CAL FIRE Fire Hazard Severity Zones (State and Local Responsibility Areas) • Flood — FEMA National Flood Hazard Layer (live API), current flood zone designation Mid-Century Projections (2050s, RCP 8.5) • Wildfire Probability — decadal fire occurrence probability from Cal-Adapt / UC Merced • Projected Flood — FEMA Future Conditions (FC-FIRM), where mapped • Extreme Heat — projected average maximum summer temperatures • Extreme Heat Days — projected days above 95°F per year (from actual Cal-Adapt daily data) • Extreme Precipitation — projected annual rainfall in inches • Sea Level Rise — coastal vulnerability for applicable properties The side panel shows an aggregate risk badge for each section and a headline "Now → 2050" summary so you can see at a glance how risk is expected to change. How it works Navigate to any California property listing. When the extension icon shows a badge (!), click it to open the side panel. Results load in 10–30 seconds from public government APIs. Data Sources CAL FIRE · FEMA NFHL · Cal-Adapt (UC Berkeley / UC Merced) · NOAA · OpenStreetMap Nominatim Privacy No data collection. No tracking. No accounts required. Only geographic coordinates are sent to public government APIs. Results are cached locally on your device for 30 days. Open source: github.com/nmatouka/climate-risk-plugin Free & open source — MIT License ⚠️ For educational purposes only. Not a substitute for professional real estate or insurance advice. Consult qualified professionals before purchasing property. v1.5.0: 8 risk indicators now grouped into Current Conditions and Mid-Century Projections. Added Wildfire Probability and FC-FIRM Projected Flood. Switched to live FEMA NFHL API (no more local data file). Fixed Extreme Heat Days to use actual Cal-Adapt daily data at 95°F threshold. Fixed Extreme Precipitation unit conversion.
Details
- Version1.5.0
- UpdatedMarch 24, 2026
- Offered byMatouka
- Size41.44KiB
- LanguagesEnglish
- Developer
Email
neil@matouka.net - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
Climate Risk - California has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.
Climate Risk - California handles the following:
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
