The fire broke out at about 1:40 p.m. at 2051 W. Hearn Ave., where responding firefighters found a small outbuilding fully engulfed in flames.
Crews worked quickly to hold the fire to the outbuilding and nearby fences and bushes, and it was controlled within 10 minutes.
Firefighters prevented the flames from spreading to nearby homes, including the one located on the property, where the owners were inside at the time the fire was discovered.
While the fire remains under investigation, the fire department said the structure's contents and the building itself were a complete loss. Arson is not suspected, and the cause appears to be accidental.
A fire investigator and fourteen fire personnel from three engines and one ladder truck assisted in the firefight.