That sounds rather implausible, given the average dev salary in SF and the existence of BART. For example, living in Daly City would give you a ~30min commute,

That sounds rather implausible, given the average dev salary in SF and the existence of BART. For example, living in Daly City would give you a ~30min commute, and the average rent there is $2,500, so $30,000 of post-tax income annually. High, obviously, but certainly doable on most SF dev salaries; Hired says the average there is 145k gross, so perhaps 100k or so after tax: https://hired.com/page/state-of-salaries https://hired.com/page/state-of-salaries