Six Years After the CZU Fire
The lightning came first. A rare dry storm in August 2020 set the fires that merged into the CZU Lightning Complex, which burned about 86,500 acres across the Santa Cruz and San Mateo mountains, destroyed roughly 1,490 structures, and killed one civilian. Boulder Creek, Bonny Doon, and the rest of the San Lorenzo Valley were hit hardest, and it all happened in the middle of the pandemic.
More than five years later, the picture is mixed. A lot has come back, some of it hasn't, and both the forest and the community are still here. What follows is where things stand, not a tidy ending, because for many families the recovery isn't over.
What happened, briefly
In mid-August 2020, a dry lightning storm sparked fires that merged into the CZU Lightning Complex. It forced mass evacuations across the valley, moved fast through steep, forested terrain, and burned for weeks before crews contained it that September.
When people were allowed home, whole neighborhoods were gone. For the fuller account, see our history of Boulder Creek's notable disasters.
What's come back
Drive the valley now and the recovery shows up in pieces. Rebuilt homes stand on lots that were bare foundations a few years ago. The forest, which many feared was lost, has come back further than expected: coast redwoods that looked dead have pushed new growth from scorched trunks, and green has returned to hillsides that were black. Redwoods are built for this. Most of the ancient giants at Big Basin survived even where the fire burned hottest.
The institutions are moving too. Big Basin, which lost nearly all of its buildings, reopened for limited day use and has an approved plan to rebuild. The town's businesses, fire department, and community groups are all still here.
What hasn't
Recovery has been uneven. Some families rebuilt within a couple of years; others are still not home. The obstacles have been the ones you'd expect, and some you wouldn't:
- Underinsurance that left people short of what rebuilding actually costs.
- A slow permitting and geologic-review process that has been, at times, contentious.
- The sheer exhaustion of navigating agencies and paperwork for years.
County officials have themselves acknowledged flaws in the rebuilding system. One fire, people here learned, can contain several different recoveries at once, and not everyone got the same one.
What endures
The lasting story of the CZU fire in Boulder Creek isn't only loss, and it isn't only recovery. It's both, side by side.
It's the mutual aid that showed up when official help was slow. It's neighbors who grew close because they went through the same thing. It's a hard-won, practical respect for fire preparedness that shapes how people clear defensible space and pack a go-bag now. More than five years on, the valley is still rebuilding, and still here. If you have a story from those years, or one about coming back, we'd like to hear it.
Frequently asked questions
When was the CZU fire?
The CZU Lightning Complex fire started in mid-August 2020 during a dry lightning storm and burned for weeks before containment that September.
How much did the CZU fire burn?
It burned about 86,500 acres across the Santa Cruz and San Mateo mountains and destroyed roughly 1,490 structures, with one civilian death. Boulder Creek and the San Lorenzo Valley were among the hardest-hit areas.
Has Boulder Creek recovered from the CZU fire?
Partly. Many homes have been rebuilt and the forest has regrown strongly, but recovery has been uneven, and some families are still working to rebuild more than five years later, slowed by insurance gaps and a difficult permitting process.
What about Big Basin?
Big Basin lost nearly all its buildings but most of its old-growth redwoods survived. It's open for limited day use, and State Parks approved a rebuilding plan in July 2026.
Have a CZU story, a rebuild update, or a correction? Share it with us. If you're preparing for fire season now, see our wildfire evacuation guide. In an emergency, call 911. Last reviewed July 20, 2026.
