My husband and I still have one son living at home that is 19 years old and going to college full time... our rules have always been that our kids could live at home FREE of CHARGE up until they were 24 years old "IF" they were attending school and being respectful of the house rules and helping out with chores and the occasionally milk or bread when needed.

Consequences for not following the house rules, helping out when asked or being respectful to parents would result in the loss of using our car and /or be given six months to obtain their own place once notified that such was required of them.