Firefighters were called to Hardwick Road West in Worksop last night after a carport set fire and spread to a semi-detached property.
The fire is thought to have started at around 1am, with four appliances from Worksop, Retford and Edwinstowe called to the scene afterwards.
A nine metre ladder, aerial platform, breathing apparatus and hose jet reel were used to tackle the fire.
It is not yet known whether anyone was hurt.
More to follow.