Four fire engines and around 25 firefighters tackled a fire at an end of terraced house on Imperial Road in Wood Green.
Part of the first floor was damaged by the fire. Seven people left the building before the Brigade arrived. There were no reports of any injuries.
Control Officers took the first of three calls at 0331 and mobilised crews from Hornsey, Southgate and Tottenham fire stations to the scene. The incident was over for firefighters at 0422.
The cause of the fire is under investigation.