"This stratospheric figure certainly isn't the norm, even in markets with a reputation for expensive homes," the report said. "But the increasing number of properties that are listed for sale and, more importantly, sell for more than that milestone amount, has set the bar higher in the game of trophy real estate."
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Perhaps surprisingly, most of these nine-figure sales are not happening in the world's wealth centers, but in suburbs and vacation spots. Last year, the most expensive home sold in America was in the Hamptons, followed by a mansion in Cote d'Azur, France, and an estate in Greenwich, Conn.
Which city will be the next to break the nine-figure mark? According to the report, it will most likely be Los Angeles.
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"Sale prices in Los Angeles have climbed into the $90 million range, and there are currently several properties listed in the city for more than $100 million," the report said. "The question for Los Angeles is not 'if' but 'when.' "