Four fire engines and around 25 firefighters were called to a fire at a house on Percy Road in Isleworth.
A large part of the first floor and over half of the roof in a two storey mid-terraced house was destroyed by fire. One woman left the property before the Brigade arrived.
The Brigade's Control officers received the first of nine calls at 1605 and mobilised crews from Heston, Richmond, Chiswick and Kingston fire stations. The fire was under control by 1659.
The cause of the fire is under investigation.