3900 Nebraska Avenue Northwest in Washington, DC and Swedish ambassador to the U.S. Karin Olofsdotter (Compass, Arizona State University) As Swedish officials confront a housing slump back home, some of their colleagues across the pond are betting that trophy residences can still command premium prices. The Swedish government has put its former ambassador’s residence in Washington, D.C., on the market for $19.5 million, the Wall Street Journal reported , making it the most expensive listing in the U.S. capital, according to the listing agent. 3900 Nebraska Avenue Northwest in Washington, DC (Compass) Set on 7 acres at 3900 Nebraska Avenue in the city’s American University Park neighborhood, the 12,000-square-foot mansion comes with seven bedrooms, but needs approximately $2 million of renovations and updates, according to Compass’ Cara Pearlman, who has the listing with fellow Compass agent TJ Morton. Built in the 1920s for publisher David Lawrence, who would go on to...