Firefighters are warning residents to take care with bonfires after one got out of control and caused a fire in the garden of a house in Elmbridge Road, Ilford.
The fire caused severe damage to a timber shed in the garden of one house and a metal shed in the rear of another.
A London Fire Brigade spokesperson said: “If you are having a bonfire never leave it unattended and consider your neighbours when you do decide to have a fire in your garden.
“Make sure you build it well clear of buildings, garden sheds, fences and hedges and never use flammable liquids to start it or burn dangerous items such as aerosol cans.
“You should also always keep a bucket of water or a hosepipe nearby in case of fire.”
Fencing from a number of properties was also damaged.
Some residents were evacuated as a precaution, two people were treated on the scene for minor smoke inhalation by the London Ambulance Service crews.
Two propane cylinders were located near the fire. They were cooled and removed as some cylinders can explode when exposed to heat.
The Brigade was called at 1906 and the fire was under control at 2006.
Four fire engines and 21 firefighters and officers from Hainault, Woodford and Ilford fire stations attended the scene.