In the LA fire most home fires were ignited by the trillions of red hot embers driven by the wind. If these embers can ignite a home then the house is lost. So

In the LA fire most home fires were ignited by the trillions of red hot embers driven by the wind. If these embers can ignite a home then the house is lost. So the key is to make the house from materials that resist ignition from wind driven embers.