Starting Late on a Portfolio + College Suggestions?

Since momrath kindly provided so many helpful infos and advices, I don’ t have much to tell you but I found this statstics for cal poly slo architecture from their website.

Acceptance into Architecture at Cal Poly, San Luis Obispo is highly competitive due to its reputation for excellence. The program receives many more applications than it can admit students. For your information, we are including the following statistics from Fall 2009:

We received 1,539 freshman applications, out of which 96 were selected (6.23% selected and enrolled), and were enrolled as freshman that fall.
We received 405 applicants wishing to transfer from a community college, out of which 34 were selected (11.9% selection rate) and were enrolled in either second or third year.
The Average High School GPA was 4.08.
The Average SAT Reading score was 664.
The Average SAT Math score was 699.
The Average ACT Composite score was 31.

You can try some schools that don’t require portfolio (cal poly slo, georgia tech,…) or start at LAC and seek to transfer.
Good luck!