With respect to the lawsuit that you have written about brought against your parents by the nursing home for unpaid services, there is a possibility that if there is a judgment against your parents in favor of the nursing facility, an abstract of it can be recorded on their home.However, under your state's homestead exemption, the nursing care facility may not be able to have the home of your parents sold while they are alive. I suggest that you consult with an attorney that practices in the area of elder care law.