Fire crews battled the blaze in an Okinja Road, Alexandra Headland house on Wednesday night.
He said when they arrived on scene all occupants had evacuated the home and the upstairs was "well involved".
"Crews managed to get it under control within half an hour," Mr Walker said.
"Crews did an excellent job to prevent the fire spreading to the rear and downstairs of the building."
He said fire investigators were continuing to probe the blaze.
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