Above is SBS, below is the actual house.
Now lets show the similarities. Red is clear copy, blue is "minor edit":
That amazon link also shows the original copyright of the house's design/owner, although it was made by Dave Rondell (dead).
"Mood Piece" seems to be stolen from a treehouse 30 minutes from their studio (Redmond, Washington). Sorry for the late post but I thought I'd at least put my chip on this.