"There was a lot of white smoke rather than the normal black smoke you would see."
No occupants of the building appeared to be outside the house.
"I didn't see anyone visibly upset, or in blankets, anything like that."
The house is an old wooden villa and was not badly damaged.
A Fire Service officer said the area was cordoned off because they were not sure what was burning.
The fire is now out.
There were three fire trucks at the scene but no ambulance.
A man working on the roof of a commercial building next door said he saw smoke, flames and heard windows breaking from the property at about 1.20pm.