Are the salaries “significantly enough higher” that someone moving to the Bay Area could buy a 3000 square foot 5 bed/3-1/2 bath house with a large office, as soon as they move there?

The average software as a service CRUD journeymen developer could do that in many non west coast cities could do that with an FHA loan with less than $15K down with 3-5 with a salary they can make with around 5 years experience. If they are part of a married dual income couple they would be quite comfortable.