My 84-year-old step-father is in the hospital with a broken back in 2 places. He can't attend to his home it's being over run by his natural children and grandchildren. They are drug addicts, teenagers and generally people with warrants living there and it has turned into a flop house. How can we get them out of the house?
If dad is not competent and thus unable to appoint a POA, then, I'd still see an attorney to get advice on going to court and seeking power to protect him and his property. The suitability of the person applying to the court for Guardianship is weighed by the court. Some immediate family members may not qualify, based on criminal records, credit status, reliability, etc.
You're going to need a lawyer - it's a question of whether the lawyer talks to your stepfather (and perhaps helps him set up POA for you) or advises you on other ways to proceed.
And if there are definitely illegal and/or dangerous activities going on, yes, call the police. You don't need anyone's permission to do that.
If you don't already hold POA then your next step would be guardianship, which is a costly and long court process.
Having said that...you should call the police about the activity in the home.
Angel