While Chateau Valmont in Montebello is used for exterior scenes for Ghosts, the interior is not used for production. According to several sources, the cast and crew head to a soundstage in Montreal to film any interior scenes. They only appear at Chateau Valmont for scenes immediately outside of the house.
That wasn’t the case for the pilot, though. Entertainment Tonight shared a tour of the set. During a chat, Utkarsh Ambudkar, the actor who plays Jay, revealed the cast used a different home to film the pilot episode. He said that all interior scenes were filmed in a house in California. Once CBS picked up the show, production was moved to Canada.
