There are two separate issues here.
One is that, admissions-wise, you need some true safeties. As others have pointed out, both stats and chronology play into this, because if a school is relatively competitive but has EA or rolling admissions such that you can get an acceptance nailed down early, then it still meets the need for a solid backup.
The other is that you are interested in several fields that have their own barriers to entry, yet you’re still figuring out what you want to do and thus need time and flexibility to explore your interests. You sound like someone who is more suited to lay a broad foundation before specializing, not someone who is ready to commit to a narrowly-focused specialty program as an undergrad. Yet, you also wouldn’t want to go to schools that lack opportunities to explore the specialty fields you’re interested in, either because those programs don’t exist there at all, or because it’s difficult or impossible to access those programs if you’re not admitted to them from the beginning.
Are you specifically interested in the studio aspect of architecture? Some arch studies and pre-arch programs have true studio exposure and others really do not, drawing mostly from academic offerings like art/arch history.
One program you might want to look at as a safety is the School of Environmental Design at CU Boulder. It’s a smaller program within a large flagship, and it starts with a common core and then branches into four specialty areas from which students can choose: architecture, landscape architecture, urban planning, and design studies. https://www.colorado.edu/envd/about/curriculum This is also a school where you could access CS classes as a non-major; there’s a CS minor available to students in any program. And you can apply EA and get a decision fairly quickly.
A true safety with rolling admissions, where you could be accepted within a matter of weeks, would be Portland State. It’s definitely on the less competitive end of the spectrum, but its CS, architecture, and urban planning programs are all particularly strong, and it’s a great city to go to school in. (There are lots of commuters and adult students, but the community in on-campus housing and near-campus private dorms is great.) It’s a terrific financial deal for Californians with the WUE rate, and the involvement of the school in the urban laboratory of Portland is innovative.
U of Utah would be another great safety in a major city with a lot of progressive social programs and initiatives going on. The honors college is terrific and offers year-long Praxis Labs, some of which would likely appeal given your interests. Computer Science is strong, College of Architecture and Planning offers excellent undergrad programs as well. http://www.cap.utah.edu/ UofU is also very affordable, either through the WUE rate or by following their path to attain residency after the first year.
U Minnesota Twin Cities is also a great urban school that is strong in all of your areas of interest.
And Pitt is a great suggestion - you’d qualify for the Honors College, and they have great architecture options http://www.arch.pitt.edu/program/major-requirements.php as well as Urban Studies and CS. Plus, rolling admissions that would give you a decision quickly.
Other non-safety possibilities to consider would include:
- Scripps College, where you can take CS classes and major in CS through Harvey Mudd and/or Pomona, and explore architecture and urban planning through the Sustainability and the Built Environment track of the Environmental Analysis major.
- Connecticut College, which has a studio-centric Arch Studies major and a CS major, an is close enough to access NYC, New Haven, Providence and Boston.
- Macalester, which has a dual-degree architecture program with WashU, as well as a CS major
- Case Western Reserve U, which has a great urban location in Cleveland, has an open door policy re: majors (you can choose to major in anything once there) and has great CS and CS-adjacent programs as well as a pre-arch major, which must be a second major but can be combined with anything.
- Northeastern U: look especially at their Urban Landscape major and their CS majors, minors, and combined majors.
As others have said, Cal Poly has excellent programs, but mobility and blending between/among programs is not easy. It’s a better school for people who are sure they want a particular field/track.
More broadly they have great, brand new facilities in a very nice campus setting adjacent to a city.