A state-commissioned review released on Friday found no single failure behind the Palisades and Eaton fires, which killed 31 people in Los Angeles County in January 2025, concluding instead that the blazes overwhelmed a firefighting system never designed for a wind-driven conflagration.

The 723-page report, prepared by the Fire Safety Research Institute at Gov. Gavin Newsom’s direction, arrived in the last months of Mr. Newsom’s term and days after the Legislature ended its session. It names no single agency or decision as the culprit, and its authors caution against looking for one. That leaves the harder question the report itself raises: If the failure runs across the whole system, who is responsible for fixing it?

The report completes an analysis the institute began last November, when it published a timeline starting on Jan. 7, 2025, the day the two fires ignited less than eight hours and roughly 30 miles apart. They spread from structure to structure at a sweeping scale and rank among the deadliest, most destructive and costliest fires in California history.

For the final report, the authors interviewed nearly 300 people from 22 agencies and held about 200 more conversations with residents in or near the fires’ footprints, alongside analyses of alerts, communications and other records. They acknowledged gaps: some agencies gave incomplete information and some operational records were sparse, limiting parts of the analysis.

Homes and the built environment played what the report calls a “substantial role” in spreading the fires, with embers, flames and heat moving from building to building. Fire-resistant features helped in some areas, but no one resident’s hardening could have guaranteed a home’s survival; whether a house stood also depended heavily on “surrounding conditions, neighborhood-scale exposure pathways, and defensive actions.” And while the state keeps improving building codes, hazard mapping, fuel treatments and insurance rules, those efforts are “not consistently translating into reduced risk” at the neighborhood level, the authors wrote.

Even before the fires started, the review found, the wildfire response system was already strained and failing, especially at communicating risk and preparedness to residents. Survivors told the authors they didn’t know whose information to trust or how to track shifting recommendations. The findings line up with earlier reporting on chaotic communications among agencies, moving command posts, poor evacuation planning for senior care homes and other vulnerable people, and warnings that arrived late on multiple systems.

The failures fell hardest on renters, on people with limited mobility, vision or hearing, and on those who did not speak English. Among the 31 people killed, “the circumstances of several,” the report says, suggest that some “may not have been aware of the fire’s proximity or their evacuation status.” One victim collapsed in front of paramedics with severe burns. One was found on the front steps of a home. Another died with a garden hose in hand.

“Behind every statistic in these fires is a person,” Derek Alkonis, one of the authors, said at a briefing. “Understanding who we lost is not a footnote to this story. It’s the heart of it, because these fires are selective in who they impact most.”

Taken together, the state-funded consultants’ recommendations call for a systemic shift, including a realignment of government responsibilities at several levels. Paying for it is another matter. “The problem is implementation and funding,” said Michael Wara, director of the Climate and Energy Policy Program and a senior research scholar at the Stanford Woods Institute for the Environment. “We can have the best plans in the world, but if we do not actually implement those plans, it will not matter.”