They do accept transfers. I just met a kid who got in with a 3.6 overall GPA. For other programs you would generally need at least a 3.5 overall,which isn't that easy to do in college.
Frankly, my feeling is to apply to an architectural program or ID program where you can get in immediately instead of taking the risk. There are plenty of good programs that aren't as hard to get into as UC. Try Pratt institute. If you don't have a portfolio, try SCAD, they have no portfolio requirements and aren't that hard to get into.
Here is a list of AIA approved schools:
https://www.acsa-arch.org/membership...1&A lpha.y=11
Good luck.