Pretty decent salary. You can't afford 2000ft house in this area(Over $600K) if this is the only income for your family unless you are willing to live a very budget-tight life.
How old are the kids? You might get a 2000SF house in a fairly good elementary school area with 600K. If you want live in a area with good high school, (Fremont Mission, Cupertino,Palo Alto), it will cost you a fortune, at least 900K. You can check www.zillow.com