Wildfire Mitigation in Silverado, California
Silverado sits in Orange County, where Orange County Fire Authority holds fire jurisdiction. Here is what the hazard mapping actually shows on the ground, and what it puts in force.
What the hazard mapping shows in Silverado
Of twenty-five points sampled across Silverado, nineteen fell inside a mapped Fire Hazard Severity Zone: nineteen in Very High (SRA). The remaining six sat outside any mapped zone, which does not mean no risk. It means CAL FIRE has not zoned that ground.
| Zone measured | Sample points |
|---|---|
| Very High (SRA) | 19 of 19 |
100% of the mapped points in Silverado came back Very High, which ranks it 17 of 32 across the areas we sample. Measured against CAL FIRE's Fire Hazard Severity Zone service on 2026-09-26.
What that means for a Silverado property
Most of Silverado measured as Very High in a SRA. That is the State Responsibility Area, where CAL FIRE carries the financial responsibility for wildfire protection and PRC 4291 defensible space applies to every structure regardless of hazard class.
PRC 4291 reaches every structure in a State Responsibility Area at any hazard class, so it applies across Silverado whether a given parcel measures Moderate, High or Very High.
Your parcel, not your city
A city-level answer cannot tell you what you owe. Hazard zone, responsibility area and fire authority are assigned parcel by parcel, and in Silverado the grid already disagrees with itself across nineteen sample points. Our Requirements Finder takes an address, reads the actual zone for that parcel from CAL FIRE and the county, and returns the obligations that attach to it, each one cited.
Check a Silverado address12 further requirements match a parcel of this type and are held back from publication until each has been checked against its published source. We would rather show you nothing than assert a legal requirement we have not verified.