Fire crews were called to the 3900 block of Conshohocken Avenue just before midnight.
Upon arrival, heavy smoke was seen from the 3-story building and one apartment had been damaged.
Residents from that apartment an adjoining apartment had to be evacuated.
The fire was placed under control at 12:19 a.m. and there were no reports of any injures.
The Red Cross was contacted to assist the four residents who were displaced.
Officials are investigating the cause of the fire.
