you can look at Falls Church area. There are some houses (actually, one right down the street from me) for $600K or less. With current rates being so low, it makes sense to actually buy a house at a bit of a strech (no more than $600K for your current state though). this is the house that was listed for $599
http://www.zillow.com/homedetails/2424-Nottingham-Dr-Falls-Church-VA-22043/51778155_zpid/