Senior Station Officer Gary Wilson said the farm cottage was completely destroyed in the fire.
The cottage was well alight by the time firefighters arrived. A tanker also came out from the Marton brigade.
"They're still looking for a cause," Mr Wilson said.
Miss Fox said a power surge may have started the fire.
"Pete, my partner, Curly the [Oxton] farm manager and I were loading the bulldozer on the truck early yesterday afternoon. Apart from the road works on our road, all was quiet.
"Unbeknown to us there had been a power surge mid-morning and Nick Tripe said this morning it is thought this started the fire.
"We must have left somewhere around 2pm to drop the bulldozer off at Fordell Garage. While we were unloading the bulldozer a fire engine came flying past the garage, sirens and lights going. I wondered briefly and then carried on working.
"As we came home it became clear where the fire engines were going as I saw a piece of Oxton history up in smoke."
Miss Fox said "everyone concerned is shaken but okay".