NEW YORK, Dec. 30 (UPI) -- A group of private researchers have determined that 65 of the nation's 299 biggest real estate markets are severely overpriced.

And that means they are subject to possible price corrections, said an analysis by National City Corp (NYSE:NCC), a financial holding company, and Global Insight, a financial information provider.

Naples, Fla., had the nation's most overvalued houses, CNN said. A single-family, median-priced house in that community sold for $329,970. The analysts said that Naples was one of 65 severely overpriced communities.

The country's most undervalued market was in College Station, Texas.