Four fire engines and around 25 firefighters were called to a house fire on Sandhurst Road in Edmonton.
The lean-to of an end-of-terrace house was destroyed by fire. There were no reports of any injuries.
The Brigade was called at 0518 and the fire was under control by 0613. Fire crews from Edmonton, Enfield, Tottenham and Southgate fire stations attended the scene.
The cause of the fire is under investigation.