The iconic San Remo on Central Park West in Manhattan. Photo courtesy of Katherine Gloede.

It's still wildly expensive to live in the nation's biggest city, but it appears prices are starting to moderate a bit. CNBC is calling a buyers market in the Big Apple.

New York City's pricey real estate has become a "buyers market," new data suggests, characterized by lowball offers and a rise in the number of properties staying on the market for longer.

The latest figures from Warburg Realty show that among higher-priced homes, New York City is in the throes of a "major shift" that reflects a cooling market, the likes of which hasn't been seen in almost a decade.

"Offers 20 percent and 25 percent below asking prices began to flow in, a phenomenon last seen in 2009," wrote Warburg Realty founder and CEO Frederick W. Peters in the report, which surveys real estate conditions around the city.

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