Four fire engines and around 25 firefighters tackled a fire at a mid terraced house converted into flats on Southerton Road in Hammersmith.
Half of a two roomed flat on the ground floor of the three storey building 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 three calls at 0321 and mobilised crews from Hammersmith, Chiswick and Fulham fire stations to the scene. The fire was extinguished by 0438.
The cause of the fire is under investigation.