So a friend of my mom's used to have a drywall business and he worked on this old farmhouse in Warren, CT. The owner mentioned that one of the final scenes of Friday the 13th part 2 had been filmed in his storage room in the basement (the shrine to Pam scene that took place in Jason's little shack) when my mom's friend saw it it still looked exactly the same, there is a shelf on the back wall used for storing pickled things that you can see behind Pam's head in the film. There were even those weird tin doors on the room that you see in the film.
So this was a few years ago and we went there last October and the old farmhouse is now a restaurant (very reasonably priced) and the barn where the filming took place has since been remodeled into the living quarters of the owners. The staff at the restaurant had heard the same thing about F13 part 2 but didn't know anything further. We didn't go up to the house/barn, but I took a photo:
They even have their own breezeway leading to the restaurant. Very nice property and lovely place to eat, I think it was called the Rooster's Tail Inn or something like that. Hit it up if you are ever in Connecticut.