Four fire engines and around 25 firefighters were called to a house fire in Manor Way in Chingford.
Half of the first floor of a semi-detached house was damaged by the fire. One man left the building before the Brigade arrived. He was treated on scene for smoke inhalation by London Ambulance Service crews.
The Brigade was called at 1507 and the fire was under control at 1606. Fire crews from Woodford, Chingford, Stoke Newington and Leyton fire stations attended the scene.
The cause of the fire is believed to be an electrical fault which ignited bedding and curtains.