California’s Jan 2025 wildfires made one thing obvious: rebuilding the same way will just burn again. Earthen wall assemblies—rammed earth, cob, adobe—deliver multi-hour fire resistance, resist embers, and in some tests outperform conventional timber and steel assemblies. Cost run higher, codes lag, but for builders and homeowners in wildfire country, these materials offer real resilience. This piece walks practical steps, testing evidence, and the regulatory hurdles you nee