Mapping of wildfire risk transmission from national forests to the wildland urban interface (WUI) revealed that, although a large proportion of the national forest lands (79 percent) can spawn fires that burn adjacent WUIs, most wildfires originated from ignitions outside of conservation reserves (e.g., wilderness). Wildfires most commonly ignited where mechanical fuel treatment is permitted, and are in the fire-adapted dry forest type that is the primary target for accelerated restoration efforts. More than half of this forest type was not available for restoration treatment, primarily because of forest plan restrictions; thus, these areas will continue to expose the WUI to wildfire risk. Results indicate that forest restoration with mechanical treatments is compatible with WUI protection and that more of these treatments probably need to be done to reduce wildfire risk in the WUI. In addition, most national forest lands that contribute wildfires to the WUI are not within the boundaries of community wildfire protection plans, which may undermine the effectiveness of these planning efforts.