MILWAUKEE (CBS 58) -- There's not much left of a garage on Milwaukee's south side after a fire Friday night. 

Cell phone video shows the garage catching fire and burning quickly. It happened near 15th and Denis, near General Mitchell International Airport. 

The detached garage was fully engulfed and at one point the fire started spreading to the home. 

"In minutes there was many flames already going up. There's bushes, the trees started on fire, it was fast," said neighbor Sonia Behling. 

Everyone in the house got out safely. One firefighter had to be treated for heat exhaustion. At this time, it's unclear how the fire started.