The occupants of a burning house in Mana fled the building before fire crews could arrive at the scene in the early hours of Monday morning.
There were no reports of injuries in the blaze which gutted a 20m x 15m single story flat near Mana Esplanade and Pascoe Ave.
Plimmerton fire chief Carl Mills said Fire and Emergency responded to multiple 111 calls shortly after 4.30am.
By the time crews arrived at the scene the house was well alight, but all occupants had got out of the building safely.
Mills said 25 firefighters fought the blaze and were able to prevent it from spreading to neighbouring houses.
The fire was brought under control about 40 minutes after crews arrived on the scene, Mills said.
“It was quite a large fire that developed pretty quickly,” Mills said.
Fire investigators would examine the site to determine the cause of the fire, Mills said.
Police were helping the occupants of the building.