Ten fire engines and around 70 firefighters attended a fire at a maisonette on Acacia Road in Wood Green.
Firefighters tackled a fire within a four storey building of maisonettes, one maisonette spread over the second and third floor was completely destroyed by the fire.
Around 20 people were evacuated by fire crews using breathing apparatus and three people were assessed by London Ambulance Service at the scene, luckily there were no injuries.
The Brigade Control Office received 16 calls about the fire.
The Brigade was called at 2158 and the fire was under control at 0000. Fire crews from Tottenham, Hornsey, Edmonton, Holloway, Stoke Newington and Southgate fire stations attended the scene.
The cause of the fire is under investigation.