Duarte, a suburb north-east of Los Angeles, is the most prestigious real estate district in the United States. A house in the area costs about 4.276 million Dollars, according to Forbes’ ranking of the 500 most expensive area codes. In the Top Ten list, New York is fifth, seventh and ninth. The prices of the most expensive homes have gone down by 5% in one year, to 1.2 million Dollars. .