Housing Index: July home prices near Amazon HQ2 soar to highest levels in a decade

June tends to be the hottest month to buy a home in Greater Washington. That’s when demand is at its highest, and prices peak for the year.

But Amazon.com Inc.’s (NASDAQ: AMZN) second headquarters seems to distort space and time, like some kind of real estate black hole.

The median sale prices for all home types in the 22202 ZIP code, where Amazon is building and staffing up HQ2, was…