Outline exactly which behaviors you will not tolerate and have him or her sign. Specify the consequences, i.e., eviction, of violating the rules.This sets up a tenant/landlord relationship and gives then guidelines for behavior in black and white.
For example, did you know that in most states, adult children living in their parents' homes are considered to have squatters' rights even though they are paying no rent?
In an ideal world, you could simply ask them to leave or change the locks and put their clothing by the curb while they are away.
However, the law protects renters—even those who don't pay their rent!
Many parents these days are faced with having an adult child living with them who has lost his or her job, gotten into legal or financial trouble, or has become difficult to impossible to live with.
Keep in mind, even though they are adults, children still should abide by the rules in your house.
That could include anything from simply keeping his or her room clean or helping with chores to more difficult topics like not bringing illegal drugs into your house or not bringing people home for sleepovers (which would have been cute when they were 10, but is awkward now that they are adults).If your relationship has broken down so much that straight honest talk goes nowhere or your adult child is doing things to endanger you or the rest of your family, it's time to take action.There are even laws you being able to put their things on the curb.You will have to go through the eviction process and evict your own child.It may seem harsh, but situations can get so extreme that you are left with little or no choice.A smart way to cover your bases is to give your expectations for living in your home to your child in writing.