Zone Zero is California’s newest defensible‑space requirement, designed to protect homes from wind‑blown embers—the leading cause of structure loss in wildfires. It focuses on the first five feet around a home. Zone Zero was mandated by Assembly Bill 3074 (2020), but the regulations were delayed as the State Board of Forestry was working on rules and implementation. It's expected to go into effect this spring. So, what is ZONE ZERO?.... It's the zone between 0 to 5 feet fr