Firefighters arrived on the scene around 5:40 a.m. on the 1500 block of Womrath Street to fire consuming a vacant house.
The fire quickly spread to adjoining occupied homes as firefighters worked to contain the blaze.
Authorities say a pregnant woman was taken to the hospital as a precaution, but she should be okay.
Fire officials say it took crews around 40 minutes to get the flames under control.
No word what caused the fire at this time.