"It was well involved by the time we got there, but thankfully everybody was already out," he said.
Firefighters were at the scene for more than an hour, but Mr Hutchinson said there was a delay in getting the power supply to the property cut off, so the fire could be fought safely.
"We can't send people in when there are live power lines," he said.
The fire was one of several callouts the Kaikohe brigade responded to over the long weekend.
Mr Hutchinson said the rain over the weekend has done little to solve the big dry that has led to fire restrictions.
He said with the ground so dry for so long, the torrential rain was quickly absorbed and the fire risk was now almost as high as before the storm.
"It's still very dry across Northland, so people still need to take care."