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    Climate change, increased wildland fuels, and residential development patterns in fire-prone areas all combine to make wildfire risk mitigation an important public policy issue. One approach to wildfire risk mitigation is to encourage homeowners to use fire-resistant building materials and to create defensible spaces around their homes. We develop a theoretical model of interdependent household wildfire risk and mathematically introduce two new concepts of the benefits accruing from hazard mitigation: direct and spillover (indirect) damage averted. We explore how Firewise communities can best spend and position mitigation resources to maximize the sum of direct and spillover damage averted. Results from simulating wildfire behavior within a fire-prone community indicate that homeowners' wildfire risk reduction actions can have significant, positive spillover effects on the wildfire risk of neighboring houses. In such cases, individual homeowners may engage in inefficient levels of wildfire risk mitigation when viewed from the community perspective. We use a simulation approach to demonstrate that wildfire risk reduction is most effective when concentrated in houses at the interface of communities and wildlands.

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    • Visit PNW's Publication Request Page to request a hard copy of this publication.
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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    Butry, David; Donovan, Geoffrey. 2008. Protect thy neighbor: investigating the spatial externalities of community wildfire hazard mitigation. Forest Science. 54(4): 417-428


    Risk, wildland-urban interface, Firewise, fire economics

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