Four fire engines and around 25 firefighters were called to a house fire on Grovestile Waye in Feltham.
Part of the first floor of an end-of-terrace house was damaged by fire. Two people left the building before the Brigade arrived. A man was treated on scene by London Ambulance Service crews.
The Brigade was called at 1617 and the fire was under control by 1655. Fire crews from Feltham, Heston and Twickenham fire stations attended the scene.
The cause of the fire is under investigation by the Brigade and the Metropolitan Police Service.