"The report shows that Manhattan's luxury market for high-end properties continues to remain untouched by the slowing economy," said board president Steven Spinola. "Manhattan condominiums in particular continue to sell for record high prices."
The study looked at prices in the first quarter of the year and compared them to the same period in 2007. In Manhattan, the average price for a home in the first quarter of last year was $1.1 million.
In Brooklyn, prices rose an average of only 3 percent, to $582,000. Average prices in Queens and Staten Island were both down by 5 percent, at $458,000 and $427,000 respectively. Average prices in the Bronx slipped by 1 percent to $396,000.
The report - using city data for recorded real estate transactions - tracks the sale of all residential property, including private houses that could be one to three-family dwellings, condominiums and cooperatives.
Prices varied according to the neighborhood.
On the Upper West Side, compared to a year ago, the average price for an apartment rose 96 percent to $2,098,000. That was followed by Murray Hill, where prices jumped 92 percent to $1,072,000, and Midtown West, where the average amount paid rose by 50 percent to $1,988,000.
Strong sales in new luxury developments in these locations drove the increases, feeding what Spinola called "a pent-up demand" for housing in a city with limited space and a recent spate of construction. The falling dollar has also made New York real estate appealing to foreign investors.
The neighborhoods with the highest average housing prices were in Soho and Tribeca, reflecting the areas' generally larger properties.
The Real Estate Board of New York is a trade association with 12,000 members. It represents property owners, builders, brokers, managers, banks and financial service companies.