Four fire engines and 21 firefighters and officers were called to a fire at a car park at a block of flats in Green Lanes, Southgate.
A ground floor storage area and covered car park were destroyed by the fire. There were no reports of any injuries.
The Brigade was called at 2036 and the fire was under control at 2133. Fire crews from Southgate, Hornsey and Edmonton fire stations attended the scene.
The cause of the fire is under investigation.