More than one in five homeowners with mortgages in Greater Boston are “underwater” these days – that is, the house is worth less than the loan. That might seem like bad news, but Zillow.com casts this information released today in a flattering light. After all, the national average is closer to one-in-three (31.4 percent of all homes with mortgages are underwater). And only 7.7 percent of Boston-area homeowners owe more than double the value of their homes, compared with 15 percent nationwide.
