Four fire engines and around 25 firefighters attended a house fire on Ingram Way in Greenford.
Half of the first-floor and part of the roof of a semi-detached house was damaged by fire. Two adults evacuated the property before firefighters arrived and there were no reports of any injuries.
The Brigade received the first of 12 calls at 1415 and Control Officers mobilised crews from Northolt, Ealing and Hayes fire stations to the scene. A 32-metre turntable ladder from Hayes Fire Station also attended. The fire was extinguished by 1533.
The cause of the fire is under investigation.