No, it was not factual, it was an OPINION offered by someone the reporter interviewed. The reporter just found out about the house a few hours ago, she certainly hasn't had time to substantiate any kind of factual evidence that it was staged. The comment was offered as someone's assumption. So much good sleuthing has been done here, let's not ruin it with putting out FALSE information.
There would be no motivation for the defense attorneys, the PIs or anyone else I can think of to "stage" a scene. The neighbor said the family moved a YEAR ago.... long before Caylee disappeared... and that would be EASY to prove due to mail deliveries, shut off of water, electric, trash, or cable services, etc. There was no Z. F. G. name involved, no way to show a connection to Casey -- as she never gave that house or address to LE. It makes much more sense that they were just following up on someone else's suspicions. If a nasty mess of a house like that was in my neighborhood, I might have called in a tip just to hopefully call attention to it and get some LE or other city official out there to condemn the property and get it cleaned up!