Four crews from Lincolnshire Fire and Rescue were called out to a blaze at a home on the Birchwood estate in Lincoln overnight.
The fire on Aberporth Drive started at around 8.45pm and caused significant damage to the loft space and 50% of the first floor of the property.
No one is reported to have been injured in the blaze.
It was put out using one hose reel and two breathing apparatus.
The cause of the fire is currently being investigated.