Evicting an adult child from your home is legally the same process as evicting a non-related person from your home. The process is not technically difficult but can be emotionally taxing. As in all legal matters, documentation and strict adherence to the letter of the law are your strongest assets. Remember that as the homeowner or named person on the lease, you have the right to decide who does and does not live in the home.
Contact the local county court clerk for the necessary eviction notice forms.
Fill out the eviction forms and contact a process server to have your child served the eviction notice. Check the service requirements for your state. In some states, any legal adult not involved in the legal proceeding can serve the notice, while in others a licensed process server is required.
File your eviction case in county court if your child fails to move out by the date you specified in your eviction notice -- typically 30 days. Be sure to produce dated documentation of any information you have regarding arrangements you made with your child regarding his residency in your home.
Contact the local police department and give them the warrant of eviction you receive when you win your court case. The police will ensure your child vacates the home within 72 hours. There may be a fee associated with this service.