It happened just before 2:30 p.m. in the 4900 block of Stenton Avenue.
Firefighters arrived to find flames coming from a fourth floor laundry room of the five story apartment building.
The building was evacuated as a precaution as smoke filled the 4th and 5th floors.
The fire was brought under control around 3:15 p.m.
Officials say the fire was confined to the one unit, and there were no reported injuries.
Officials expect to all residents to return to their apartment.