Back on topic please, foolish persons!
I agree.
It is a very difficult situation. With the West property my understanding was that the police damn nearly demolished it looking for evidence anyway. This one looks like going the same way.
There are three houses in this village where I know murders have been committed but they were basically "domestic" and the locals maintain a discreet silence about the events. Newcomers to the village do buy them, eventually, and the conspiracy of silence often means that they change hands several times without the owners ever knowing the history.
I think, however, that houses where mass murder has been committed and the bodies buried for years are on a different scale. The notoriety will finish any value in the property and the notoriety will never leave them. No-one is likely to buy them ... indeed people would be suspicious of anyone who did.
Anyway it's only bricks and mortar ~ what about the victims and, more especially, their surviving families and friends? They will want to see a closure to the matter and I feel that, since they will not have the pleasure of seeing the murderer hung, at least they would probably want the site levelled and some sort of memorial erected.