California's first Zone Zero ember-resistant standards, approved unanimously in August 2026 and affecting two million homes, are landing at the opening of Marin County's Diablo wind season, creating an urgent compliance and fire preparedness window for Mill Valley and Tiburon property owners. Treemasters, a certified arborist company based in San Rafael, is expanding its Mill Valley and Tiburon scheduling now for dead tree removal, tree risk assessments, crown work, and defensible space evaluations aligned with active MWPA and Southern Marin Fire inspection timelines. - California approved the nation's first Zone Zero ember-resistant standards on August 19, 2026, affecting roughly two million homes, but the existing 100-foot defensible space law requiring dead tree removal has been enforceable for years and is actively being inspected in Mill Valle ...