WUIs are high-risk zones for human-caused wildfires due to the combination of dense wildland vegetation, flammable human structures, and ignition sources from human activity near fuel loads. As population increases within these areas, so does the frequency of activities that can spark wildfires. Expanding real estate development in fire-prone WUI zones further heightens the risk, significantly increasing the potential for property loss.
WUI areas account for a disproportionate share of wildfire-related property damage because wildfires in these zones occur closer to people and structures. Wildfires pose both direct and indirect risks to businesses. Direct risks include damage to buildings, vehicles, machinery, and infrastructure, as well as operational disruptions. Indirect risks – such as disrupted supply chains or reduced tourism and hospitality – can also be costly. Although the WUI covers less than 10 percent of US land, it is involved in nearly 33 percent of wildfires nationwide. Furthermore, 86-97 percent of building losses due to wildfires in the US occur in the WUI.
The rapid expansion of the WUI, driven by population growth, urbanization, and demographic shifts,…
