Four fire engines and around 25 firefighters tackled a fire on Hemsworth Street in Hackney.
A shed and some fencing in a rear garden were destroyed by the fire. Two further sheds in neighbouring gardens were also damaged by the fire. There were no reports of any injuries.
Control Officers took the first of 36 calls at 0732 and mobilised crews from Islington, Whitechapel, Bethnal Green and Dowgate fire stations to the scene. The fire was extinguished by 0915.
The cause of the fire is under investigation.