Four fire engines and around 25 firefighters were called to a house fire on Uxbridge Road in Southall.
Part of the ground floor, half of the first floor and part of the roof of a semi-detached house was damaged by fire. There were no reports of any injuries.
The Brigade was called at 1225 and the fire was under control by 1343. Fire crews from North Kensington, Southall and Acton fire stations attended the scene.
The cause of the fire is under investigation by the Brigade and the Metropolitan Police Service.