Four fire engines and 21 firefighters and officers were called to a fire at a house converted into flats in Ovington Square, Knightsbridge.
A small part of the ground floor of the five-storey terraced house was damaged by the fire. There were no reports of any injuries.
The Brigade was called at 1121 and the fire was under control at 1214. Fire crews from Chelsea, Battersea and Lambeth fire stations attended the scene.
The cause of the fire is under investigation.