Six fire engines and around 40 firefighters were called to a fire at a house on Burnt Oak Road in Sidcup.
Half of the first floor and roof of a semi-detached house were damaged by the fire. There were no reports of any injuries.
The Brigade was called at 1729 and the fire was under control by 1925. Fire crews from Sidcup, Eltham and Bexley fire stations attended the scene.
The cause of the fire is under investigation.