Firefighters rescued a man as his house went up in flames.
Crews were called to the blaze on Stratford Street, Ilkeston, at about 1.20am on Saturday.
A spokesman for Derbyshire fire service said: “The incident involved a two-storey terraced house on fire.
“Crews from Ilkeston and Heanor used four breathing apparatus and two hose reel jets to extinguish the fire.
“They rescued a man who was treated by the ambulance service.”
The spokesman said police were also in attendance.
It is not yet clear what caused the fire.
Firefighters left the scene at about 4am.