Four fire engines and around 25 firefighters were called to a fire at a house in Endsleigh Road in West Ealing.
Part of the ground floor and first floor of the property were damaged by fire.
The Brigade was called at 1554 and the fire was under control at 1720. Fire crews from Ealing, Southall, Chiswick and Acton fire stations attended the scene.
The cause of the fire is under investigation.