Four fire engines and 21 firefighters and officers were called to a fire in a basement at a house in Granville Grove, Lewisham.
Part of the basement of the property was damaged by fire.
The Brigade was called at 1029 and the fire was under control at 1134. Fire crews from Lewisham, Greenwich, Lee Green and Deptford fire stations attended the scene.
The cause of the fire is under investigation.