| It is extremely hard to double in anything + architecture, simply based on how many hours there are in a day. Most people who start out this way end up dropping one of the majors by the second year. Business is particularly problematic because many business schools require students to maintain an extremely high GPA, while architecture faculties are notorious for deflating grades.
I don't get to plug my alma mater too often here, but USC is excellent for both. I think I've heard that Cincinatti has a pretty good business school as well.
On the flip side, if you're interested in the place where architecture and business come together, it could be worthwhile for you to look into programs in real estate development as an alternative to the double-major. |