All seven residents were out of the house when emergency crews arrived, but a man and two teenagers were taken to Rush-Copley Medical Center in Aurora with minor injuries, Knowles said.
The fire, which left the home uninhabitable, was extinguished about 2 p.m., according to Knowles, who said the fire was never elevated to an extra-alarm blaze.
The cause and origin of the blaze remains under investigation and the South Suburban Arson Task Force assisted in the probe.
