When myself and a mate were renting we moved into a new place only to be told about a week later that it was being sold (when I say told, we found out when the estate agent tried to do a viewing).
From then on we used to spread empty beer cans around and sit around drinking when they were doing viewings whilst telling the prospective buyers that we wouldn't trust the owner whatsoever.
It was still on the market when we moved out and we'd been happily warning the prospective new tenants that the place was on the market (which seemed to have been missed from the rental ad)
When myself and a mate were renting we moved into a new place only to be told about a week later that it was being sold (when I say told, we found out when the estate agent tried to do a viewing).
From then on we used to spread empty beer cans around and sit around drinking when they were doing viewings whilst telling the prospective buyers that we wouldn't trust the owner whatsoever.