A Co-op store and flat were affected by smoke from a burning car in an alleyway.
Firefighters tackled the incident in Preston after receiving the call at around 1.30am.
A person in the flat above the store was alerted by a smoke alarm and evacuated the premises.
The vehicle was parked in the alleyway at the side of the store on Norbreck Drive.
Two fire crews, one from Penwortham, the other from Preston attended and used two hose reels.
Police also attended the incident.
Crew manager Mick Birks, of Penwortham fire station, said: “We initially got it as a car fire, then repeat calls as fire spread to a building.
“The car was well alight by the storeroom where there was facia boarding and wooden boarding over the storeroom windows. There was bad charring and the guttering had melted.
“Smoke had gone into the Co-op and flat. A lady in the flat above had to evacuate, the alarm sounded and woke her up.
“We’re not sure of the cause.”