WASHINGTON (MarketWatch) - U.S. new home sales fell to their lowest level in over 17 years in November, the Commerce Department estimated Tuesday. New home sales fell 2.9% to a seasonally adjusted annual rate of 407,000. This is the lowest level since 401,000 in January 1991. New home sales are 35.3% below their level in November 2007. The drop was slightly above the 400,000 pace expected by economists surveyed by MarketWatch. New-home sales in October were revised to a 419,000 level compared with the previous estimate of 433,000. The months' supply of homes on the market fell slightly to 11.5 months in November from 11.8 months in October. Median sales prices have fallen 11.5% in the past year to $220,400.