A nine-year-old boy is being hailed a hero after he smashed a window to save his family from their burning home.

The boy then rushed to the neighbours and begged for their help as flames took over the Kewdale, WA,  home.

The family, including a baby, managed to get out just in time.

With his hands covered in blood, he repeatedly rang a neighbour’s doorbell before someone across the road came to help.

“Help, help!” he shouts.

“Our house is burning; our house is burning!”

He’d escaped the raging inferno by smashing a window and climbing out.

But stuck inside the Downsborough Avenue house were his parents and baby brother.

“The lounge room was engulfed, the flames started poking out from the windows,” neighbour Didin Yassin told  7NEWS.

“When we came out onto the lawn, all you could see was smoke,” said another witness.

A man inside tried to save the home, but only had a garden hose.

Neighbours say within minutes, he was struggling to breathe and collapsed on the front verge, suffering from smoke inhalation.

The fire stared around 10 pm on Sunday night.

On Monday, what was left of the home was still smouldering.

Years of family memories and belongings have been lost, because of a simple mistake – washing hanging too close to a heater in the lounge room.

The family now don’t have much to come home to, but because of their brave boy, they still have each other.