A second neighbour, who didn't wish to be named, said it felt like the house went up in flames in "seconds".
"It was all so fast. It's not so much the heat but inhaling that smoke – the fumes, you just have to get out because you can't breathe."
She told the Herald the house was "destroyed" and its owners would likely have to build an entirely new one.
A Givealittle page set up by a neighbour of the family describes them as "not just great neighbours, they are great friends and an amazing family".
"The Ulbergs are a humble family and they have not asked for us to do this, but we know they are hurting and that there are many who would love to help."
So far $44,129 has been raised in less than 24 hours.