I'm in Ashburn, VA. I just looked at Zillow and saw that the cheapest single family home right now is $625k for 2060 sqft. If you have a credit score >719 and put $100k (~16%) down, it's only $4438/month according to their estimates.
So my wife and I live in an apartment with no kids or pets, and we both work a lot... Maybe one day we can afford a townhouse? I just found a decent looking one that's only $450k so $3200/month...