Wildfire exposure in property underwriting
A property's wildfire exposure is driven by its position in the wildland-urban interface, the surrounding fuel and terrain, and FEMA's wildfire rating for the location. The clearest federal signal Plattow uses is FEMA's National Risk Index wildfire rating; a Very High rating denotes genuine, location-specific fire exposure that can carry the property's overall risk to the top of the scale.
What drives wildfire risk
Wildfire exposure is local. It rises with proximity to undeveloped wildland (the wildland-urban interface, or WUI), with dry and abundant fuel, with steep slope, and with seasonal wind. Two homes a mile apart can carry very different exposure depending on which side of the interface they sit on.
How FEMA rates it
FEMA's National Risk Index publishes a wildfire risk rating for every census tract and county. Plattow reads that rating directly. A Very High wildfire rating is a strong, defensible signal of real fire exposure, because the rating reflects modeled wildfire likelihood and intensity at that location, not aggregate property value.
What raises a property's exposure
| Factor | Effect |
|---|---|
| In or adjacent to the WUI | Higher; embers and direct flame contact |
| Steep slope below the structure | Higher; fire accelerates uphill |
| Continuous vegetation to the structure | Higher; no defensible space |
| Prevailing seasonal wind toward the structure | Higher; ember transport |
How to check a property
Plattow returns the FEMA wildfire rating for any U.S. address alongside the rest of its peril profile, and the Safe Havens map shows wildfire-driven regions in red. For the score logic, see how Plattow scores risk.
Related: the master assessment guide, methodology. Look up any address on the Safe Havens map or call the data at /api/report.