Most of SV (except for San Francisco itself) is family friendly. This is suburbia with a large tech population. The big issue you are going to face, depending o

Most of SV (except for San Francisco itself) is family friendly. This is suburbia with a large tech population. The big issue you are going to face, depending on the ages of your children, is school selection and you can expect to pay a premium ranging from "a lot" to "you must be joking" for housing in areas with really good schools.