Is someone living in your basement?  Someone you potty-trained?  According to a Pew Research Center analysis, adults who are 18-34 years old are more likely to be living with their parents than with a spouse or partner.  Whatever the reason, set up boundaries:

~  Bed made every morning. 
~  If you can’t use it or properly display it, don’t move it in.
~  Provide a multi-purpose cleaner and room freshener
~ Do your own laundry – often!
~ Go in together on a storage unit if necessary, you still need to park two cars in the garage.
~ Love your child through the tough transition and you will be loved back forever.