What is Defensible Space? It is a buffer around your home, outbuildings, etc. that has been mitigated to reduce the potential to spread a wildfire. Defensible space, being firewise, improves the chance your home and neighborhood can be saved from a wildfire. By cleaning up and maintaining your property, removing ladder fuels and other combustible object, a fire can be slowed or even stopped before it spreads to your home. Defensible Space also helps protect firefighters and provides them a place to work. Creating defensible space around homes is a critical aspect of protecting mountain communities.