Firefighters estimate it did $100,000 to $150,000 in damage to the home in the 3800 block of 21st Street.
Investigators say the damage is too bad to figure out what caused the fire.
“We will formally classify this fire as what’s called undetermined. Undetermined is we are not able to determine what is the item first ignited, what’s the fuel source, how they all came together. We just can’t prove that,” said Mark Dahl, Fire Investigator.
Two people renting the home got out and weren’t hurt, but everything inside the home is a total loss.