Thank You for the update and the link. Times change! I lived there in 89-90, and it was still 25+ and / or Grad Students.They are separate structures. Per this website (https://housing.iastate.edu/places/halls), it doesn't appear either have age restrictions now. My guess is they got rid of the restrictions due to an overall shortage of dorm rooms. I was a CA in Buchanan '07-09 and at that time it was still 19+ to live there.