It was during the investigation of the fire scene that police found human remains.
The body has not yet been identified and will undergo a forensic examination, but is believed to belong to a man in his 60s whose next of kin have been notified.
A preliminary investigation into arson has been opened. A person in his 60s has been arrested on suspicion of the crime.
The fire was reported on Wednesday morning. One person reportedly escaped from the building, but the house could not be saved.
The cause of the fire is unclear and the scene is cordoned off pending a technical investigation, police said.
