The fire happened in the 4700-Block of W Fulton Avenue in West Garfield Park near the CTA Cicero Station.
Chopper 7 caught the moment one of the houses appeared to collapse at about 9:30 a.m.
House partially collapses in West Side fire
Witnesses said residents were able to quickly get out. Some neighbors knocked on each others doors to evacuate.
The Chicago Fire Department said there were no injuries.
At about 11 a.m. firefighters were continuing to monitor some hot spots.