I mean, since the paranormal doesn't exist unless the people in the house died due to some kind of environmental factor then the number of people who died there is completely irrelevant to the new residents, and does not in any way increase their likelihood of harm.
Really it just lowers the rent or mortgage, an objective win for the new residents.
It's amazing how common this is. One of my old employers got a great discount on rent for office space in a central location because no one wanted to rent on the 13th floor.
I don’t remember what the number was, but O had a guy ask me at work for a different sandbox server because the number was unlucky in his country or something. So like Dev06 was a no go.