Subsidized Households and Wildfire Hazards in California

Abstract

As deadly and destructive wildfires become increasingly common in the western United States due to climate change, low-income households face particular difficulties recovering from these disasters. Despite this threat, surprisingly little empirical evidence exists about the exposure and vulnerability to wildfire hazards of residents of subsidized housing. This study focuses on the subsidized housing population for several reasons: residents generally have less adaptive capacity to respond to wildfires; the locations of subsidized housing units reflect relatively stable locations of low-income households for decades; and policymakers can intervene to retrofit existing housing as well as shape future housing siting and design. The dataset created for this study includes all Census tracts in California with housing units by type, wildland-urban interface (WUI) coverage, and an index of social vulnerability. Using a combination of descriptive statistics and spatial regression models, the analysis focuses on the intersection of subsidized housing and wildfire hazards. Results show that subsidized housing is disproportionately located outside the WUI in California's metropolitan and nonmetropolitan areas. However, policy interventions are necessary because many vulnerable households-including those residing in the 140,000 subsidized units in the WUI-live in harm's way.