Does the house have a red door? That's one of their tells. Is there lots of local social traffic at the house? Coven members coming and going as well as the extended witch network. There are a great many homes of this kind with these freakish and evil things going on.
The fact there are many names definitely narrows it down to a ritual kill site for at least a coven.
https://www.bitchute.com/video/7iXBDjLjW6VZ/