By Diana Olick, CNBC Real Estate Reporter NEW YORK ( CNBC) -- For the first time in over six months, the supply of homes for sale is beginning to rise. While inventories are still down nearly 20% from a year ago, they did rise more than the seasonal norm in February from January, according to a new report from the National Association of Realtors. The raw number of for-sale listings rose 10% month-to-month, and when seasonally adjusted, they were up 2.6%, the biggest jump in over two years. "Tight inventory has been a critical issue for the housing market: The limited supply of homes has fueled bidding wars and has meant that buyers have little to choose from and agents have little to sell," said Trulia.com's Jed Kolko. "Inventory has been tightening because construction levels are still low, adding little new housing stock, and homeowners are waiting to sell until they have more positive equity. This inventory spiral been especially severe since prices bottomed."
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