yeah it's hard for me to wrap my head around the amount of extant 19th century buildings in SF. in KC approximately all of them were torn down to make parking lots. when there is a proposal to tear down another one for a jimmy johns or hopcat or whatever it makes me boil with rage.
sf population peaked in 1950 at almost 800k, not reached again until 2000. now it's almost 900k, so i guess the extra 100k is just too much for the predominately 2-3 story buildings to handle?