Four fire engines and around 25 firefighters were called to a fire at a bungalow on Ruby Close in Hackney.
A caravan was destroyed by the blaze. Part of a detached bungalow and part of the roof void of an additional, neighbouring bungalow were also damaged by fire. There were no reports of any injuries.
The Brigade's 999 Control Officers took 15 calls to the blaze.
The Brigade was called at 0839 and the fire was under control by 1004. Fire crews from Homerton and Stoke Newington fire stations attended the scene.
The cause of the fire has been recorded as undetermined.