Negative equity occurs when the value of an asset used to secure a loan is less than the outstanding balance on the loan.[1] In the United States, assets (particularly real estate, whose loans are mortgages) with negative equity are often referred to as being "underwater", and loans and borrowers with negative equity are said to be "upside down".In owner-occupied housing market, a fall in the market value of a mortgaged house or condo is the usual cause of negative equity. Negative equity in the owner-occupied market sometimes occurs when the owner obtains second-mortgage home-equity loans, causing the combined loans to (1 comments)