Eight fire engines and around 60 firefighters were called to a fire at a range of workshops and residential units on Fontayne Road, Tottenham.
Around half of a ground floor workshop was damaged by fire. There were no reports of any injuries.
The Brigade was called at 1915 and the fire was under control at 2016. Fire crews from Walthamstow, Stoke Newington, Holloway, Tottenham, and surrounding fire stations attended the scene.
The cause of the fire is under investigation.