Constructions on the old tombs around the church

In France, cemeteries used to be placed against churches to reduce the time it took to transport the deceased.
Then, with the increase in population, cemeteries were placed on the outskirts of homes. But the graves were not moved!
These places were first converted into stables or agricultural sheds. Then, with oblivion, mansions were built on very cheap land...For example the Vièle street district
The basements of these old cemeteries around the church have never been spiritually cleansed. A soul guide made a diagnosis in one of these houses, behind the church, built on graves. Initially, these houses were shelters for animals, not for humans.