Fifteen fire engines and around 100 firefighters tackled a house fire on Oxford Gardens in Notting Hill.
Part of the first floor and the roof of a detached house converted into flats were damaged by fire, alongside half of the second floor and a mezzanine. There were no reports of any injuries.
Station Commander Duncan Rees, who was at the scene, said: “Crews worked hard to bring the fire under control in the early hours of this morning.
“One of the Brigade’s 32-metre turntable ladders was used as a water tower to tackle the flames from above.
“We asked the public to avoid the area where possible as we worked to bring the incident safely under control.”
The Brigade's Control Officers took the first call to the fire at 0252 and mobilised crews from Wembley, Acton, Hammersmith, Kensington, Paddington and surrounding fire stations to the scene. The fire was under control by 0612.
Due to the unsafe structure of the building, the cause of the fire has been recorded as undetermined.