Authorities will assess the damage from a bushfire in the Perth Hills which destroyed 27 homes.
Authorities will be out at first light this morning, assessing the damage from a bushfire and several firefighters had to be treated for heat stroke.
Flames raced through the bush.
Hundreds of firefighters battled on the ground and from the air.
MAN: (ON RADIO) There's a property under threat at that location, over.
But against the ferocity of the flames, there was little they could do.
The Seven News helicopter captured the moment one home was engulfed.
We grabbed everything and basically ran.
We took the cars out and we don't have any pets so we don't have to worry about that.
At least 27 have been lost, that number is expected to rise.
Authorities are hoping the death toll won't.
One man died trying to save his home.
The 62-year-old went into cardiac arrest, collapsing on his roof.
Overnight, the bushfire threat has been downgraded.
Fire crews managing to contain the blaze which has already burned more than 250 hectares.
But residents are warned it is still burning out of control and a threat remains.
Dozens of families have spent the night at evacuation centres, not knowing if they have a home to return to.
Packed up what we could.
My husband stayed, just in case, to fight it.
We put sprinklers on the roof.
Pretty much broke down but everything that we needed - the animals, passports, birth certificates, the important stuff and our lives, basically.
So at the end of the day, that's what counts.
The devastating fire ripped through the Perth Hills as a heatwave blanketed most of WA.
Today's temperatures are expected to be cooler, bringing relief for crews still battling the blaze.
But there's little relief for residents expected to return to the scenes of destruction later today as investigations begin.