Im just throwing out things that go on in my house...no idea if they have any bearing on your situation.
Friends staying over
House phone limits
Friends coming to the door after a certain time
Horns blowing
Food in rooms? Where will he keep his snack items he buys?
Dating...this may pertain to number one!
In my case, Cory just moved his whole little family in with us. Interesting to say the least.