It's not too complicated - most big cities in CA have simply not built enough housing to keep up with population growth. Mass transit in/out of urban centers l

It's not too complicated - most big cities in CA have simply not built enough housing to keep up with population growth. Mass transit in/out of urban centers like SF/LA are very underdeveloped, so it makes it really difficult to live in a cheaper area outside of the city and bear the commute everyday.