Mine are 14/16/18.
After meals they clear the table, wash/dry up, run the dishwasher, take out the recycling, wipe down all the sides.
They feed the animals and clean out the litter trays.
Walk the dog (we take it in turns).
Clean a bathroom or do the hoovering throughout once a week.
Mow the lawn in summer and snowblow/shovel in winter.
Clean out their rooms when I crack and start getting screechy.
The older two drive me places, go to the supermarket if I ask them to, pick up prescriptions, etc.
Do laundry.
If they can't be home for family dinner because of an after-school activity they feed themselves.
They might occasionally sort their rooms, dust/vacuum, etc.
I don't give them pocket money but I do pay them for certain big tasks and I'm pretty nice about buying them things they want.
If they started to be arsey about any of this they'd find that their lives got quite difficult. I'd remove access to cars, stop giving lifts, stop providing the nice food/drinks they like and reduce to basics, switch off their phone data plans, switch off wifi etc.
They know which side their bread is buttered.