Four fire engines and around 25 firefighters were called to a fire at a retirement bungalow on Parkside Gardens in Barnet.
A small part of the building was damaged by the fire. Firefighters wearing breathing apparatus rescued one man from the property but he was sadly pronounced dead at the scene.
The Brigade was called at 0122 and the fire was under control by 0253. Fire crews from Southgate, Barnet and Finchley fire stations attended.
The cause of the fire is under investigation.