And when mine turned 18, they started paying rent and their part of utilities. My oldest moved out at 18, because he was convinced he could do it all on his own. Cool story bro, he begged to move home within a month. Nope, you’re grown, you’ve got it. Handle it.
My youngest bio child moved out May 2019 (he’ll be 20 this week). From age 18 til he moved out, he was still expected to complete his chores and pay rent/utilities. It prepared him to do the same once he moved out.
He recently told me how much he appreciated it.