San Francisco saw the largest year-over-year increase in the country as prices jumped 24.5%

via Home prices up sharply in U.S. cities in May, Case-Shiller index says –

Home prices shot up in America’s largest cities in May, according to a closely watched home price index.

The Standard & Poor’s/Case-Shiller index of 20 large U.S. cities, released Tuesday, rose 2.4% from April and 12.2% from May 2012….