Ignoring Hide & Shriek, and assuming the house is still called/connected to 'graveyard', in folklore salt is used to combat 'vengeful spirits'. Seems at least possible that this a house focused on ghosts/spirits and possibly include ghost hunters of some description.
However, Ghostbusters would make a house like that somewhat redundant this year.
America's largest cemetery is in Salt lake City, if anyone can make anything of that tenuous link!