15 houses? maybe universal can build houses on top of each other lol. extra houses on a second floor, build a little escalator for people to go up.
seeing how we are running out of movies to adapt, imagine if the same year had sequel houses from the same franchise lol.
1 house for nightmare on elm Street and then a separate house for nightmare on elm Street 2 and 3. or 1 house for terrifier and a separate house for terrifier 2