Four fire engines and around 25 firefighters were called to a house fire on Belmont Park Road in Leyton.
The whole of the roof of the two storey home was damaged by fire. Part of the first floor was also affected. There were no reports of any injuries.
The Brigade was called at 1436 and the fire was under control by 1534. Fire crews from Leyton, Walthamstow, Leytonstone and Homerton fire stations were at the scene.
The fire is believed to be accidental and caused by an unknown electrical event.