IRVINE, Calif., June 12, 2013 /PRNewswire/ -- CoreLogic ® (NYSE: CLGX), a leading residential property information, analytics and services provider, today released new analysis showing approximately 850,000 more residential properties returned to a state of positive equity during the first quarter of 2013, and the total number of mortgaged residential properties with equity currently stands at 39 million. The analysis shows that 9.7 million, or 19.8 percent of all residential properties with a mortgage, were still in negative equity at the end of the first quarter of 2013 with a total value of $580 billion. This figure is down from 10.5 million*, or 21.7 percent of all residential properties with a mortgage, at the end of the fourth quarter of 2012. To view the multimedia assets associated with this release, please click: http://www.multivu.com/mnr/61881-corelogic-reports-first-quarter-2013-positive-equity (Logo: http://photos.prnewswire.com/prnh/20130612/MM25650) Negative equity, often referred to as "underwater" or "upside down," means that borrowers owe more on their mortgages than their homes are worth. Negative equity can occur because of a decline in value, an increase in mortgage debt or a combination of both. The national aggregate value of negative equity decreased more than $50 billion to $580 billion at the end of the first quarter from $631 billion at the end of the fourth quarter of 2012. This decrease was driven in large part by an improvement in home prices. Of the 39 million residential properties with positive equity, 11.2 million have less than 20 percent equity. Borrowers with less than 20 percent equity, referred to as "under-equitied," may have a more difficult time obtaining new financing for their homes due to underwriting constraints. At the end of the first quarter of 2013, 2.1 million residential properties had less than 5 percent equity, referred to as near-negative equity. Properties that are near negative equity are at risk should home prices fall. Under-equitied mortgages accounted for 23 percent of all residential properties with a mortgage nationwide in the first quarter of 2013. The average amount of equity for all properties with a mortgage is 32.8 percent.