If you really want to transfer to a good CS school in California, try Santa Clara University, for the following reasons:
(1) Higher education in California is dominated by state schools, like the UCs and CSUs. But it is very difficult to transfer into these schools from out of state, because they give priority in transfer admissions to California community colleges, as noted above.
(2) So you should look at private schools in California, instead of state schools. The best-known private schools, like Caltech, Stanford, USC, and Harvey Mudd, are very good for CS. But it is very hard to transfer into these schools too, because they are extremely selective and competitive.
(3) So what you need is a private school in California that is strong for CS, but not extremely selective. The school that best fits this description is SCU.
SCU is located in Silicon Valley, so obviously a great location for tech. Many people want to study CS or engineering in the Bay Area, but the top schools (Stanford and Berkeley) are insanely competitive, which means SCU gets lots of highly qualified students who need a backup. According to the asee.org online profile, SCU’s engineering program is now pulling students with 680-760 Math SATs, which is higher than most UC engineering programs (or Penn State’s). And SCU is not known as a major research institution; their strength is teaching.
For Fall 2016, SCU admitted 331 out of 771 transfer applicants, or 43%.
The downside to SCU is that it charges high private-school tuition, but is not particularly wealthy and does not have great financial aid. But if you are paying the full out-of-state rate at Penn State, you can probably afford SCU.