High-end properties in New York City, Los Angeles, and Miami are gathering dust on the real estate shelf.<br />In Miami, Latin American buyers have less buying power in the US than they used to.<br />The threat of rising sea levels and the preference for large houses are also shaping the trend.<br />New York has an over-saturation of penthouses, and Los Angeles has a glut of mega-mansions.<br />According to Business Insiders, real-estate agents are going to great lengths to get properties off the market. <br />
