[maxander]

It’s definitely not too old for anything, if you want to do it. Source: I transferred from local college to better college at 20 myself.

There will be plenty of 20-year-olds where you transfer, and no one will care what year you technically are. Don’t worry about that. College is not like high school.

As other commenters have noted, the big question is whether you want to spend the extra time in school (and spend the extra money for the extra time - college debt is serious business!) But you know your own situation best, and an extra couple years of classes can be spent profitably if you’re thoughtful about how you use them.

But, here’s another possibility to consider- finish undergrad at your current place, and then go for a Master’s degree at the more prestigious school? It’s an extra two years in either case, and then you have a whole postgraduate degree as well.