The locations of walls and doors, yes. Your furniture and other stuff, no. Having a "man on the inside" able to tell whether that third bedroom is being used as

The locations of walls and doors, yes. Your furniture and other stuff, no. Having a "man on the inside" able to tell whether that third bedroom is being used as an office or a nursery could be of value to a company deciding whether to advertise child care products or office supplies. Hell just giving a heads up that a household is in the market for a big ticket item like a couch could be quite valuable.