I am interested in this also, is there such thing as Margin Call on property, so that all your houses get revalued automatically by bank when there is downturn, and if it goes negative, they can force to sell your houses?
I know a few investors that went belly up during the early mid 1990's ,what the Banks would do is bring in a new manager and call various investors in and ask them within 3 months to fix up the mess or they would call in the loans,or just look at any money lending contract and look for the all monies clause,it will be in there somewhere..