Firefighters were called to a flat fire on New Cross Road in New Cross.
Half of a kitchen in a three-roomed flat on the first floor of the building was damaged by fire. Two people left the building before the Brigade arrived. There were no reports of any injuries.
The Brigade was called at 2232 and the fire was under control by 2309. Three fire engines and around 15 firefighters from Greenwich, Deptford and Lewisham fire stations attended the scene.
The cause of the fire is believed to have been electrical.