Six fire engines and 35 firefighters and officers were called to a fire at a house in Lyncroft Gardens in Hounslow this afternoon.
The roof of the semi-detached house was destroyed by the fire and part of the roof of a neighbouring property was also damaged.
Two women and one man left the affected property and a further two men left the neighbouring property before the arrival of the Brigade.
Station Manager Andy Walton who was at the scene said: "Crews on the scene were met by a rapidly developing fire and firefighters wearing breathing apparatus (BA) entered the house and fought the fire using main hoses. The hard work of the BA crews managed to contain the fire to the roof and the aerial appliance was used to damp down and cut away burnt material."
The Brigade was called at 1257 and the fire was under control at 1436. Fire crews from Heston, Feltham, Twickenham, Kingston, Hayes, Richmond and Chiswick fire stations attended the scene.
The cause of the fire is under investigation.