San Jose has been attracting all sorts of developers to build residential high-rises around downtown only to have them empty, with large banners "Selling Now! Prices Slashed!" hanging for years.
Sunnyvale has a bunch of apartments near the CalTrain station that will come online this year so that will be interesting.
(Also the hardware industry has gone down significantly in the past 20 years. san jose will never have the 70's and 80's again)