UCB’s College of Environmental Design does require applicants to choose a major on the application.
https://ced.berkeley.edu/admissions/undergraduate/frequently-asked-questions
Note that a BA/BS in an architecture-related major is typically 4 years (versus 5 years for an NAAB-accredited BArch program). An MArch is normally 3 years, but some departments have a slight shorter option for those with a BA/BS in an architecture-related major (or a BArch).