Four fire engines and around 25 firefighters were called to a fire at a care home on Elm Park Road in Finchley.
A small part of the first floor was damaged by the fire. There were no reports of any injuries.
The Brigade was called at 1936 and the fire was under control by 2025. Fire crews from Finchley and Hendon fire stations attended the scene.
The cause of the fire is under investigation by the Brigade and the Metropolitan Police Service.