Four fire engines and around 25 firefighters tackled a fire on Gordon Road in Highams Park.
Half of the ground floor of a two-storey semi-detached house was damaged by fire. One man was taken to hospital by London Ambulance Crews suffering from smoke inhalation. Two women were treated at the scene by ambulance crews.
The fire is being treated as accidental and is believed to have been caused by a candle being too close to a combustible item.
A London Fire Brigade spokesperson said: "Candles, incense sticks and oil burners are one of the most common causes of fire. It’s really important that you never leave a candle unattended and keep them away from anything that can easily catch fire.
"You should also ensure they are in a heat-resistant holder and placed on a stable surface, so they won’t be knocked over."
The Brigade was called at 0408 and the fire was brought under control by 0516. Crews from Woodford, Chingford and Walthamstow fire stations attended the scene.
Firefighters’ candle safety tips
· Make sure you put out any candles, incense and oil burners when you leave the room and especially before bed.
· Place candles, incense and oil burners in heat-resistant holders and placed on a stable surface where they won't be knocked over.
· Keep them away from materials that might catch fire - that's things like curtains, furniture, clothes and hair.
· Be aware that tea lights get very hot and without proper holders can melt through plastic surfaces like a TV or bath.
· LED candles can be a great alternative - they're safe even if you fall asleep or forget to blow them out.