Oh god, such a difficult issue here.
dss 14, eow and one week night overnight and one just after school (and all the time his DM doesn't want him - so he's been here full time for the last two weeks).
His set chores are dishwasher, lay table, clear table, keep own room tidy, hang up his school clothes, put away his clean clothes, get changed when he gets in from school.
He does none of them without being told a million times. His bedroom is a tip barely fit for human habitation.
Dp does expect him to do it all but doesn't notice if he doesn't and doesn't tell him off.
So, answer no he doesn't, but yes he should - and, no, he's not a guest, he lives here, just not all the time. And I worry about the 'dad's house is fun' thing, and we've explained to him that it only seems that way because he's not here very much.