Percentage of underwater homeowners still growing

Zillow: 2.4 million homes worth less than half of what they're mortgaged for

The percentage of homeowners with mortgages who owe more than their homes are worth continued to rise during the first quarter, but only 1 in 10 of underwater homeowners are seriously delinquent on their loans, according to estimates released today by real estate search portal Zillow.

Zillow — which looks at outstanding loan amounts on individual properties, and compares them with estimated valuations for each home that are generated by computer models — estimates that 15.7 million homes were underwater during the first three months of the year.