When he bought those buildings from Equity Office Properties, he more than doubled the size of his real estate portfolio and used only $50 million of his own money to do so; he borrowed $7 billion to finance the rest of the purchase. Macklowe’s predicament marks the denouement of an unprecedented four-year period in which developers threw gobs of money at real estate as prices for office towers, especially in Manhattan, doubled and tripled almost as fast as sales could be recorded. Analysts, bankers and developers are not predicting the imminent collapse of the commercial real estate market, a reprise of the early 1990s, when property values dropped by half, vacancies soared and banks were crushed under the weight of soured real estate loans. There is widespread speculation in the real estate industry that the Macklowes may be forced to unload some of their properties at a discount to creditors — including a sizable stake in the G. read more