Yeah debug menu worked for me when I had this issue (drove my truck into my house, didn’t realise I was doing 150).
I don’t really understand the point of the feature though, and thus I do not see why decay is a solution. Roof caves in, crap everywhere, this I can understand. Clear it with a shovel, that is fine. But wait, there is another pile in the same space, and you can’t shovel it. But if you wait, it will gradually evaporate?!
Is this supposed to represent the ghost of the dead house?