Safer Cities

For decades, wildfire policy has focused on vegetation.

Homeowners are told to clear brush, trim trees, remove plants, and create defensible space around their homes. While vegetation management can play an important role in wildfire resilience, it is only one piece of a much larger picture.

A growing body of research shows that some of the most important factors influencing structure loss have nothing to do with landscaping.

They have to do with how communities are built.

The distance between homes.

The density of development.

The width of roads.

The ability to evacuate.

The materials used to construct buildings.

The space available between structures when a firestorm arrives.

Once a fire enters a developed neighborhood, homes themselves can become fuel. Fire spreads through embers, radiant heat, and structure-to-structure ignition. Under these conditions, community design may become more important than what is growing in any individual yard.

Yet much of today's wildfire discussion remains focused on vegetation immediately surrounding a structure while paying far less attention to land-use decisions that determine how closely buildings are placed together in the first place.

This section explores the overlooked relationship between wildfire safety and urban planning.

Because urban fire safety is a land-use issue.

It is also a land-use issue.

Explore

The Lost 30 Feet
How California's fire safety framework shifted from building separation to vegetation clearance.

Density Matters
Why the distance between buildings may be one of the strongest predictors of structure loss during urban firestorms.

The Setback Problem
What happens when housing policies reduce the very space that wildfire science says helps slow fire spread.

Urban Fires 101
Understanding how urban conflagrations differ from traditional wildfires.