system
A chat on subreddit /r/NoStupidQuestions
human
Just curious what the rules are. 
I moved out at 19, and I moved back in @ 24 for a few years. Best decision I ever made. My parents were great, and it helped me save a ton of money.
gpt
Not OP, but my wife and I have ran a sort of multigenerational/rent free roommate house for going on 14 years now. Any of our friends, our children, or our family can move into our apartment basement. 

Rules are:


don’t waste utilities, 


no casual hookups with randoms (tinder, Grindr, whatever), 


no extra tenants (girlfriends, whatever) without our permission


everyone signs a month to month contract so we can evict if necessary (never needed to). 


No drugs. (Weed is legal now in Missouri, but no smoking actual weed. Vape and edibles okay)


No smoking inside (vaping okay). 


Quiet hours after midnight (no blaring music, no coming and going through the front door). 


While you’re here, you’re welcome to our kitchen and pantry, but you’ve got to contribute. 


Chores are an everyone thing (mowing grass, whatever). 


So far my wife and I (mid-late thirties) have hosted…. 9 different people rent/utility free. Typically for 6-12 months.