"Because of the normal things we have in the garage [which act as accelerants], the fire spread quickly," Black said.
The family members were out for dinner when the fire started. KUTV reports that multiple animals live inside the house, and it was unknown how many got out.
After several hours of fighting the fire including two to three hours of putting out hot spots the home was a complete loss. In addition to the contents of the house, the family also lost two cars and a trailer.
Black estimated the damage at $600,000.
"It's a sad thing to lose your home [just] before Christmas," Black said.
But they are not without support. The local bishop of The Church of Jesus Christ of Latter-day Saints, Russell Zesiger, was on scene almost as soon as firefighters were to help the family.
The fire's cause remains under investigation. Black noted that due to the extensive damage, the cause may prove difficult to determine.
Because the lots in the neighborhood are large, firefighters were never concerned that the fire would spread to another house.
The fire flared again from the smoldering remains Saturday morning, and firefighters returned to douse it. Black said they would keep a fire engine on scene through the morning to ensure it stays out.
Paul Cowley, his wife, four children and a son-in-law lived in the home and are all right, though the loss has been hard on them, said Cowley's sister-in-law Kellie Cowley.
"The ward, the neighborhood and the community stake [have been] supportive and helpful and rallied around them," Kellie Cowley said.
The Zesiger household's phones have been ringing off the hook all day Saturday with people wanting to help, said the bishop's wife, Misty Zesiger.
Misty Zesiger said that people can donate to the family through The Paul Cowley Family account at America First Credit Union.
Salt Lake Tribune reporter Kimball Bennion contributed to this story.