Newquay's derelict Cedars Hotel on fire
About 30 people were evacuated from their homes in Newquay after fire broke out at a nearby derelict hotel.
Fire crews were sent to the four storey former Cedars hotel in the Mount Wise area at about 16:30 GMT.
Police said residents were being looked by the Red Cross in a local rest centre and would be allowed to return home at 22:30 GMT.
There have been no reports of injuries and the cause of the fire is being investigated, police said.