 The D.C. metro is one of the most expensive housing markets in the country. However, as WTOP business reporter Jeff Claybaugh tells us, it is not in the top ten. Based on median selling price, San Jose is the most expensive, a median price of more than $1.5 million. The top five are all in California. Boston and now even Denver are more expensive than D.C. The D.C. metro ranks number 14.