The only area in SD County I can think of that would be directly comparable (in architecture/lot size) to that area of Pasadena (where Caltrans will begin to auction vacant lots they own) is the Presidio (MH 92103).
There may be others but that area most comes to mind, here:
The above link is a photo of Bellevue Dr (the 5th link/lot in my previous post).
The Havendale Dr lots might be able to be built with a lesser ranch-style home. The street is somewhat dilapidated and pretty narrow and its homes aren’t a valuable as those on the other streets (links 3 & 4 of my previous post). Nice view lots, though.