Four fire engines and around 25 firefighters tackled a fire on Murray Street in Camden.
The fire occurred in a mid-terraced house converted into flats. Part of a flat was damaged by fire. There were no reports of any injuries.
The Brigade was called at 1521, and the fire was brought under control by 1604. Crews from Kentish Town, Euston, Hornsey and Holloway fire stations attended the scene.
The cause of the fire is under investigation by the Brigade and Metropolitan Police.