I just moved here from San Jose. Sold my house there. Mira Mesa type area, maybe even a little older (1949), extensively and questionably remodeled, 1900 sf but on a 9k sf lot, quiet street but a block away from a major thoroughfare, awful school district … $917K. I would definitely say that bay area prices are 50% to 100% higher than here.
One value engine in the bay area, not really present here, is non salary earnings such as stock options. Yet that valley has gone through some pretty rough housing shocks.