Four fire engines and around 25 firefighters tackled a fire at a mid terraced house on Manor Park in East Ham.
Half of the basement was damaged by the fire. There are no reports of any injuries.
Control Officers took the first of four calls at 1208 and mobilised crews from Ilford, Barking, Homerton and Stratford fire stations to the scene. The fire was extinguished by 1308.
The cause of the fire is under investigation.