Three fire engines and around 20 firefighters were called to a fire at a house in Inderwick Road, Hornsey.
The affected flat was empty at the time of the fire and was undergoing refurbishment. A small part of the ground floor was damaged by fire. One woman was led to safety by firefighters wearing breathing apparatus. She was assessed at the scene by London Ambulance Service crews.
The Brigade was called at 1728 and the fire was under control at 1759. Fire crews from Hornsey and Kentish Town fire stations attended the scene.
The cause of the fire is believed to be accidental.