The Spooky House is a limited-time building that was released during the Treehouse of Horror XXV Event.
After obtaining Hugo Simpson, it could be crafted several times in the Make-a-Thing Workshop, but the items needed increased by 10% each time.
It returned in the Treehouse of Horror XXVI Event, craftable for 500 Snake Eggs. It returned again as a craftable item during the Treehouse of Horror XXVII Event, for the price of 30 Obols.