I put the deposit on the lot to start my home build when I was 25 and moved out of my parents house at 26.
Not sure there should be a set age. Kida seems to stay at home longer these days and I'm good with it as long as they are going to school and saving for their future.
A kid in high school said his parents told him he was done living at home the day he turned 18.. I didn't think it would happen especially because he got cancer in 11th grade and was still in recovery. They day he turned 18 they kicked him out