Four fire engines and around 25 firefighters were called to a fire at a flat in Darenth Road, Stamford Hill.
Part of a ground floor flat was damaged by fire. One man left the affected flat before the arrival of the Brigade.
The Brigade was called at 0651 and the fire was under control at 0713. Fire crews from Stoke Newington and Tottenham fire stations attended the scene.
The cause of the fire is under investigation by the Brigade and the Metropolitan Police Service.