I also understand this to be the set used in "To Kill a Mockingbird", "Gremlins", "Bruce Almighty" (subbing as downtown Buffalo), and I'm sure quite a number of other movies, since it's on a studio backlot.
"The back lot includes the house featured in "Psycho" and the clock tower from the "Back to the Future" movies. The clock tower has been damaged but not destroyed."
http://www.ctv.ca/servlet/ArticleNews/story/CTVNews/20080601/movie_fire_080601/20080601?hub=CTVNewsAt11
"The back lot includes the house featured in "Psycho" and the clock tower from the "Back to the Future" movies. The clock tower has been damaged but not destroyed."
https://globalfilmlocations.net/2016/05/22/back-to-the-future-part-3-film-locations/