Supernatural methods are available for many things including selling your house according to this NY Times article. It is really quite simple. St. Joseph is a Catholic saint who intercedes on behalf of many people for many various concerns, including help for families, expectant mothers, selling a house, and more. To enlist his help in selling your house, you can purchase a St. Joseph statue (see here), and bury it in your yard. Some prayer may needed as well.
Many things pop out from the article. First, sales of St. Joseph statues appear to be countercyclical. That is, they sell better during bad economic times. See this earlier post for another countercyclical religious good and a simple supply-demand explanation. Can you think of other countercyclical religious goods? Any evidence for your claim?
Second, about tw0-thirds down, the writer seems to confuse magic and religion. I would classify this as religion because, as I understand it, St. Joseph himself is to be involved and not just the statue.
Third, notice that people report different experiences. Some believe the supernatural appeal worked; others do not. But we can understand that the practice can persist because, first, it is not falsifiable, and second, it is not very costly to do.
Finally, at the bottom we learn that non-Catholics as well as Catholics to use the St. Joseph statue for help selling a home. We often see that people mix practices from multiple religious traditions. One question is why we do not observe more mixing than we do.