Four fire engines and around 25 firefighters tackled a fire at a mixed use warehouse and dwellings on Brunner Road in Walthamstow.
Part of an enclosed brick built room on the ground floor was damaged by the fire. There were no reports of any injuries.
The Brigade was called at 1931 and the incident was over for firefighters at 2332. Firefighters from Walthamstow, Holloway and Tottenham Fire Stations attended the scene.
The cause of the fire is under investigation.