Four fire engines and around 25 firefighters tackled a fire at a block of maisonettes on Highcliff Drive in Wandsworth.
Part of a first floor maisonette was damaged by the fire. Three people left the building before the Brigade arrived. There are currently no reports of any injuries.
Control Officers took the first of eight calls at 0856 and mobilised crews to the scene from Wandworth, Richmond, Battersea and Wimbledon fire stations to the scene. The fire was extinguished by 0958.
The cause of the fire is under investigation.